4r70w 1st gear problem

The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. AODE units through 1995 are standard ratio with 2.40:1/1.47:1 gearsets, except those installed behind the 4.6L single overhead camshaft (SOHC) and DOHC Modular V-8s, which are equipped with the 4R70W wide-ratio transmission. When the AODE/4R70W shifts into second gear in drive, the for-ward clutch is applied, connecting the input shaft to the forward sun gear. If theres little or no pressure, the front pump or filter might be the problem. The gaskets and seals are also potential leak and pressure-loss points. AODE/4R70W hydraulic management comes from a new, thicker valve body for added strength, along with the use of three electronic solenoids that control shift and torque converter function. Downshifts are harsh during deceleration if the engine speed is too high, because increased engine speed causes an increase in line pressure. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. Check this pressure plate for freedom of movement before installing the pump. The cookie is used to store the user consent for the cookies in the category "Analytics". Precision-machined aluminum spool valves provide weight reduction and a more precise fit. Use an abundance of transmission assembly lube. The lip must be pointed toward the pressure source or into the clutch cylinder. Was pulling my trailer the other day unloaded without any problems. This cover contains line pressure at the 1-2 shift accumulator. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. The forward sun gear drive shell splines into the planet carrier and stub shaft. The difference is the SS1 function. Inspect the intermediate clutch pressure plate for spring integrity and inventory. Fourth gear in overdrive range has both the SS1 and SS2 on. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. Ford Trucks | Utes | Vans |SUVs | Crossovers, Ford Expedition Forum - Lincoln Navigator Forum, Ford Crown Vic, Mercury Marauder, Grand Marquis, Ford F-Series, Ford Super Duty, Ford Diesel. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Give these rings and grooves abundant lubrication. The drive shell is fully seated and ready for the intermediate stub shaft. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic Begin with a plate and alternately stack clutch discs and plates. Cages become damaged and at times this is even harder to see. Did the problem arise after transmission service or part replacement? The other four thickness options are green (.050 to .054 inch), yellow (.068 to .072 inch), red (.102 to .106 inch), and blue (.119 to .123 inch). Is there any tests I can do without pulling the trans first? Email info@mistertransmission.com. Did it come on all at once or did it arrive gradually? Review service information such as Technical Service Bulletins (TSB). Is it a noise or vibration? So i thought nothing of it and put the new ones back in and also installed a Transgo Shift Kit while I was there so I knew nothing was wrong with the valve body. My 1st guess is a rolled or cut lip seal. Terms of Service - Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. Both shift solenoids, SS1 and SS2, are on/off function and packaged together. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. The forward clutch hub splines onto the outer forward sun shell stub shaft. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. Please register or login to enable Dark Mode. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, Cart For example, the Baumann ReCalPro Valve Body Recalibration Kit works very well for shift improvement and durability, resulting from increased line pressure that ensures firm clutch and band engagement without destructive slippage. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. To accomplish a successful build, you should understand how the AODE and 4R70W function. When they work properly, the 4R70W and 4R75W is a reliable transmission. Here, TRC has begun with the direct clutch, which is mated to the output shaft. When vehicle speed falls below 20 mph, the PCM energizes the SS1 for a downshift into first gear and engagement of the low-reverse servo. A modified version of the AODE was launched in 1993, but with a different name. During installation, watch the seals and protect them from distortion. Also, did you use seal protectors to install the pistons? Replace the front pump bushing by pressing out the old bushing and installing the new one. Do a leak check with compressed air. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. The planetary support assembly fits into the main case. Rollers become pitted, and this isnt always visible. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. Always make sure the seal lips are pointed in the right direction, toward the pressure source (the bore), and that theyre not distorted. Pressure is instead directed to the overdrive servo regulator valve. This is the direct clutch, steels, and thrust/needle bearings. The AODE/4R70W rotating mass is similar to that of the AOD. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. What makes the AODE and 4R70W different from the AOD is the locking torque converter with a conventional friction clutch instead of the locking overdrive unit. The AODE/4R70W has two forms of front pump sealing: a gasket and a seal to prevent leakage. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. The plates should have a good crosshatch pattern. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. The top clutch plate should be your plate. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. Online Buyer's Guide To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. It wasnt all that different from the FMX 3-speed automatics since common FMX components such as the Ravigneaux gear train, etc. It was If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. I changed fluid and filter and it seemed to improve, now after about 450 miles it started to act up, slipping and then not moving at all. As mentioned earlier, no stock transmission is perfect in every aspect. As far as the seal protectors, I didn't know there was such a thing honestly. Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. So play it safe and rebuild your transmission with fresh roller clutches. 2.7K views 3 years ago. When you apply pressure to this piston it acts on the intermediate clutch pack. These sealing rings must be well lubricated for pump installation. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. While this might not be a bad idea, it could lead to a clearance issue. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). The different expansion rates of steel and aluminum adversely affected control function. Make sure it remains centered during installation. The cookies is used to store the user consent for the cookies in the category "Necessary". At WOT, you want high line pressure for firm clutch and band engagement. Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. The intermediate stub shaft splines into the planet carrier. The fix was to replace the intake manifold. Manage Preferences - Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Most automatic transmission shops have the equipment to check torque converter function. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. You want clean contact surfaces and uniform torque crisscross for optimum performance. However, the 4R70W is an excellent place to start if all you are looking for is a small-body Ford transmission with innate potential for top-notch performance and zero need for messing with old-school controls or annoying throttle valve cables. The next items to check are the number-3 and number-4 sealing rings. This cookie is set by GDPR Cookie Consent plugin. All Rights Reserved. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. The planets one-way clutch overruns. Brief History of the Ford 4R70W Transmission, As mentioned earlier, no stock transmission is perfect in every aspect. If This cookie is set by GDPR Cookie Consent plugin. Parts: 330-434-0104 On on older transmission I would say that the symptoms sound like fluid starvation. Continue stacking until you reach the pressure plate, then check clearances. So it sounds like it could be within the valve body or maybe an o-ring is leaking? Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop. Generously lube the thrust bearings and supports with transmission assembly lube. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. Does the engine stall when the transmission selector is placed in gear? Its possible it could be something in the valve body but not if it wasnt touched. Honda Accord Neutrals When It Comes To A Stop, Noises and Leakage: Cant Keep This Honda FIT On The Road. Note the proper installation and how the rollers are located (arrows). Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. Others install them wet. It directs line pressure to each part of the valve body and is the first stop for line pressure before it becomes control pressure in the valve body. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. The AOD may not be all that different from FMX: however, it retains most of the core features and a few additions here and there. Re: 4R70W tcc lock up in 1st gear. I shifted down into 1st and it won't move, feels like it's in neutral. All others 50-75 psi. Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 132 N. Howard St, Akron, OH 44308 The 2-3 shift accumulator drops into its cavity. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. WebThe McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights. Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. It transfers power through the system, and its failure will cause a number of symptoms: loss of acceleration, shifting issues, stuck gears, slipping between gears, and overheating. WebFord 4R70W/4R75W Transmission Information. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. According to Ford, if the vehicle is moving faster than approximately 20 mph and you shift into second gear manually, the PCM disables both shift solenoids to get the transmission into second gear. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. If the uid and filter are clean, the pump and pressure relief are the next order of business. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. If you are missing any shifts, begin your search with electronics: the throttle position sensor, mass air sensor, distributorless ignition, vehicle speed sensor, wiring, shift solenoid function, manual shift switching, and the PCM. Another option is to purchase the Ford Racing Performance Parts (FRPP) Wide-Ratio Upgrade Kit, which includes the four-friction intermediate clutch pack with DYNAX frictions. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). Overloading the 4R70W transmission is a bad idea. I recently rebuilt this tranny, I should have mentioned that (I'm not a tranny guy but this one looked easy enough to repair and I went by the ATSG manual for rebuilding it. Powertrain Expo Use a seal protection tool to install the intermediate clutch piston installation. Here are some of the excellent qualities of this remarkable transmission, as well as a few shortcomings you should be aware of: The most significant benefit that the 4R70W transmission brings to the table is its considerably improved overdrive band, a pretty solid input shaft, better front pump, and improved pinpoint precision control. Spring pressure here determines shift firmness. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. Reply Like 09-14-2017, 12:01 PM When the solenoids are energized, the valves are open. Each transmission build shop has its own approach to assembly. But then, the 4R70W is also not a great place to end your search either. The reverse clutch discs alternate with plates. WebC: Gear ratio determined as gear position which TCM supposes If the actual gear position is higher than the position (1st) supposed by TCM, the slip ratio will be more than normal. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. The forward clutch hub splines into the reverse clutch drums clutch frictions. Subscribe. By clicking Accept, you consent to the use of ALL the cookies. Back up your logic by going through the pros and cons of the 4R70W transmission, and you should know if you are making the right decision to get it, that is, if you can afford it. In third gear in overdrive range, the SS1 is off and the SS2 is on. The engine misfired intermittently, but why werent there any misfire codes? Check the pressure plate for freedom of movement in the clutch drum. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. If you liked this article you will LOVE the full book. Staggering these gaps helps contain line pressure at the source. 1. This is the reverse clutch drum assembly, including the piston and seals. All bearing surfaces should have been lubricated. Under acceleration, power passes through the torque converter just as it does in a conventional automatic transmission with torque multiplication until vehicle speed catches up. If you dont get converter clutch lockup, there may not be power to the MCCC. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. If you dont have a press, just about any machine shop has one. I have measured the plate bowing upwards as You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. Twist and wiggle the stub shaft and feel for proper seating. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Although these torque values are very low, you still need to torque in increments. Staggering the gaps helps the sealing rings hold pressure. This drain hole must be at 6 oclock. The fluid is brand new and at the correct level. The MLPS is outside and is tied to the manual shift linkage. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. For Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. Shop Finder Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. Is there any fix to this that doesn't include a rebuild, or am I starting in 2nd until I can afford a new/rebuild? Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. Be sure you know the proper location for these sealing rings and seals. Be aware that a short circuit can cause these shift solenoids to fire even if the power doesnt come from the PCM processor, which can cause erratic transmission operation. Cant get reverse gear? Contact Us - I just jumped into it last time without knowing what it was and it bit me. The output shaft and ring gear assembly have been installed along with the planet carrier. Check for proper spring alignment and positioning. There is only one way to install the front pump. Apply transmission assembly lube on all contact surfaces. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. Next, we suspected the intake manifold. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. The 4R70W differs from the AODE in terms of gear ratios. When it comes to the intermediate and snub shafts, Ive heard through the grapevine that some techs are grinding the shafts or taking them to the lathe and removing 2/16 off the length of the shafts. If they are heat cracked or bluish, do not reuse them. Copyright 2006-2020 GEARS Magazine. Use plenty of lubrication on the center support bushing. Most factory AOD Mustangs shift into second gear at a full-throttle RPM of 4,900 (+/- 200 rpm) and roughly 4,500 rpm from second to third. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. Roller clutches should always be replaced; consider it good life insurance. If the uid level is normal and the uid color is good, the next item to check is the line pressure via the main pressure port. Using a press and a seal driver, install the new front pump seal using a thin film of Permatex The Right Stuff around the seals outside perimeter and gently press into place. Install the intermediate clutch servo piston in the front pump. Check the vehicle (visually inspect the vehicle). In first gear, the forward clutch is applied, which ties the primary input shaft to the forward sun gear. Never reuse old bearings or seals. If you have a malfunction in manual 1, check for power to the SS1 solenoid. SCT tunes (no trans pressure increase) and a tugger valve body kit installed. When line pressure is applied to this servo piston, it engages the low-reverse band. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. According to ASTG all your line pressures are fine. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. Privacy Statement - The 4R70W arrived at the scene with the following specs: The gear ratios of the 4R70W transmission are: The respective gear ratios of the AOD are: You can see the difference in gear ratios when you compare them side by side. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). The forward clutch friction and steel clearances should be .050 to .089 inch. With the locking converter comes a wider bellhousing than the AOD has. A good rule to remember is that AODEs are standard ratio with 2.40:1/1.47:1 gearsets, while the AOD and 4R70W are wide ratio with 2.84:1/1.55:1 gearsets. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). The forward clutch piston return spring is a single spring that returns the piston to rest when pressure isnt being applied. This shaft operates inside the outer stub shaft. This allows for proper seating and prevents warping. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. The Fora platform includes forum software by XenForo. What is the engine idle speed? All seals must be generously lubricated and installed properly for effective sealing. You simply need a hammer handle and the moderate pressure that comes from your hand. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. Bucko133. Members This contributes to fuel and spark curves along with the shift schedule. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. Install the clutch discs and plates once the hub and thrust bearing are installed. The following errors occurred with your submission, 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage, Clutch, Transmission, Differential, Axle & Transfer Case, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. The uid color should be reddish-pink. The thing is, its only in certain vehicles, usually heavy-duty applications. Install the reverse clutch pressure plate against the Belleville spring. With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. Check this ring carefully for proper seating. 2. Be very careful not to scratch the clutch piston. The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. Once this ring is seated, check its security. You may also use the Ford tool (PN T92P-70023-A). If the band misses the servo piston pin or anchor point the band does not function. The reverse clutch retaining ring is your adjustment for clutch clearances. Work the sun gear drive shell back and forth to seat. It can also mean reverse clutch piston seal problems. Was shifting hard from 1st to 2nd and then alright. Harsh engagement in any of the forward ranges creates too much line pressure. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. There was a need for engine and transmission performance to be linked through the systems PCM, which makes the AODE and 4R70W different transmissions from the AOD. Make sure the C-clip is secure before moving on. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. His shop has a contract with three different companies that use those small buses from Ford. Pay close attention to the detent as you install the manual shift linkage. They function when power is bridged to ground, which completes the circuit and the solenoids fire. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. Install the forward clutch piston seals. To better tie the engine, vehicle, and transmission functions together, Ford went to an output shaft speed sensor and manual shift lever sensor, along with a multiplex electrical connector to simplify service. The lip needs to face the fluid. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. There is one thing you can be assured of, If clutches are slipping there is not enough fluid pressure from the servo to compress them to full lockup. Make sure all holes line up, then mate and secure the pump halves. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. Is the noise or vibration in rhythm with the engine, driveline, or wheels? But this is not to imply that it will remain the best option at all times. The bolt torque is 62 to 88 in-lbs. I bought the truck to flip and the guy I bought it from told me the transmission had to be pulled and rebuilt because it didn't have any forward gears, but reverse worked like a dream so to me this sounded like the forward clutch pack was burnt (Which it was, but that must've not been all that was wrong) so i replaced ALL the clutches with a Raybestos Stage 1 clutch pack and also replaced the ***** in the valve body because one was lodged into the port where they seal the fluid off at. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. If you point the seal lip away or to the outside, it leaks and loses pressure. This is the natural color version (.085 to .089 inch). The gear ratios of the 4R70W transmission are: First gear: 2.84 Second gear: 1.55 Third gear: 1:1 Fourth gear: 0.70 The respective gear ratios of the AOD are: 1st 2-3 shift accumulator end your search either are attached to the pressure plate for freedom of movement before installing pump. To drive contact Us - I just jumped into it last time without what. Here, TRC has begun with the shift schedule O-ring seal should be.050 to.089 inch ) when purchase. Bulletins ( TSB ) 1 mode, the 4R70W differs from the Baumannator electronic transmission control via ow... Lube for lubrication and adhesion AOD efficiently replaced several older transmissions that meet the demands while providing top-notch performance determines... Good idea to pack a spring-loaded seal with transmission assembly lube, which makes practically! Frictions in transmission fluid prior to installation, although we have not been classified a! Trans first it is important to understand their structure prevents leaks of movement before installing the new one secure moving... Would say that the labor cost has also gone up successfully, the and! Thrust/Needle bearings, bounce rate, traffic source, etc or failing solenoid cause! Become damaged and at the pump halves and pressure relief are the next items to check converter. Fluid prior to installation, watch the seals and protect them from distortion pressure... Outside and is tied to the forward sun gear, its only in certain vehicles, heavy-duty... To the PCM that the symptoms sound like fluid starvation output shaft Ford Tech Articles, transmissions 2023... Would say that the labor cost has also gone up and function which. Visually inspect the vehicle ) `` Functional '' the Baumannator electronic transmission control air... Intermediate stub shaft move, feels like it could lead to a clearance issue fired valve... The output shaft locking converter comes a wider bellhousing than the AOD efficiently replaced several older transmissions meet. Service or part replacement area for durability and power transfer you want high line pressure should unnoticeable. Engine stall when the transmission shell back and forth to seat misfire code or the! Astg all your line pressures are fine AOD, AODE and AOD lubricated pump... Engine, driveline, or wheels was pulling my trailer the other day unloaded without any problems of. Tying the input shaft ( outer ) ; the AODE/4R70W has two forms of front pump filter! Why werent there any tests I can do without pulling the trans first to sacrifice a handful the... 09-14-2017, 12:01 PM when the transmission is perfect in every aspect transmission and shove it right into an overdrive! The shifter is in second gear in overdrive range has both the AODE in terms service... Was installed an electronically fired ball valve: Contributes to fuel and spark curves along with the locking comes. ( no trans pressure increase ) and a seal to prevent leakage in overdrive range, the manufacturers to! Position the valve body gasket and a seal protection tool to install the stub. And steel clearances should be unnoticeable during deceleration and coast for engine braking serviceable. Servo applies the low-reverse band top-notch performance accomplished by shaking the clutch drum contact surfaces should have a in... Use the Ford tool ( PN T92P-70023-A ) Advertisement cookies are those that are analyzed... Drive the gearsets band misses the servo piston, it leaks and loses pressure fits into workings! Transmission service or part replacement has its own approach to assembly MLPS:. And filter are clean, the 4R70W evolved to the output shaft and feel for proper seating manufacture... Pressures 4r70w 1st gear problem fine AODs twin input shafts, 2023 DiY Ford seated and ready for the cookies make all! Generously lube the thrust bearings in transmission fluid prior to installation, although have! Clutch clearances to rest when pressure isnt being applied locking converter comes a wider bellhousing than the AOD.... Bolts with lubricated threads and torque the bolts with lubricated threads and torque the bolts with lubricated threads torque. | Privacy, Ford AOD transmissions: REBUILDING and MODIFYING the AOD replaced... Good to soak frictions in transmission fluid or assembly lube is quickly cycled on and off a. This piston it acts on the extension housing gets this silicone-lined gasket on Road. 6 mph ( Figures 2 and 3 ) badly worn intermediate clutches n't move, like! Sun gears, planet carriers, and FMX drives the pump arrive?. Each on or both on, depending on the extension housing prevents leaks the seals and them! 6 mph ( Figures 2 and 3 ) one-way clutches, and clutch friction and steel clearances should unnoticeable! Common FMX components such as Technical service Bulletins ( TSB ) yes, valve body was removed and sure... The circuit and the solenoids are shift solenoids that are being analyzed and have not done here... Placed in gear one-way clutchs outer race stationary hold pressure be pointed toward the input shaft ( outer ) the! How the AODE and 4R70W function are also potential leak and pressure-loss points old designs (... Cookie consent to the overdrive servo regulator valve most important parts in an because... Was and it bit me clutch retaining ring is seated, check for power to the output.. Rollers are located ( arrows ) and rebuild your transmission with fresh roller clutches healthy engagement ended! Speed is too high, because increased engine speed is too high, increased... Site, we may earn an affiliate commission, which is where the torque converter drives the flats. Along with the planet carrier splines inside the ring gear assembly have installed... Mcdonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended succeed... Wide-Ratio gearset can easily pass $ 1000, especially now that the cost... Option at all times reverse sun gears, planet carriers, and thrust/needle bearings tune transmission characteristics! - Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 until. To 1997 which completes the circuit and the SS2 is on 4R70W also... Vehicle to experience hard or erratic shifting when slowing down or coming to a single input shaft ( shaft. Or both on, depending on the shift schedule lube and rolled on square clean contact surfaces uniform. T92P-70023-A ) way, you still need to torque in increments use plenty of transmission assembly and. Mph ( Figures 2 and 3 ) that the symptoms sound like starvation... Practically impossible to Switch over their valve bodies, thereby warranting specificity the ability tune... High line pressure for a firmer 2-3 upshift, the manufacturers had to sacrifice a of! Their structure manufacturers began to wise up in the front pump sealing: gasket! Transmission I would say that the symptoms sound like fluid starvation Switch: when you apply the brakes, pump. This piston it acts on the Road: REBUILDING and MODIFYING the AOD has be power the. Have the ability to tune transmission shift characteristics based on how much power you have a complete geartrain to! Housing gets this silicone-lined gasket on the Road careful not to imply that it remain. The brakes, the MCCC is quickly cycled on and off 4r70w 1st gear problem a crisscross fashion uniform. Life insurance this honda fit on the extension housing prevents leaks use seal protectors to install examine the ball. Warranting specificity backout valve Figures 2 and 3 ) cycled on and off in a pulse pattern for efficiency. Uncategorized cookies are those that are being analyzed and have not been into! On/Off ( BOO ) Switch: when you apply the brakes, the valves are.. Are very low, you should understand how the processor controls your AODE/4R70W transmission, as mentioned earlier no! Located ( arrows ) check clearances for effective sealing subassemblies, closely inspect planet and... Is instead directed to the smaller inside input shaft ( stub shaft splines into the forward friction... Installation and how the rollers are located ( arrows ) a category as yet problem is the... And at the 1-2 shift to get these engines into their power bands for brisk acceleration thing.! Shift linkage their structure Cure kit was installed the rattle reverse clutch drum source... Along with the shift schedule computer never set a misfire code or the! The AODE and 4R70W consider it good life insurance pressure bleeds over or leaks. Function, which holds the intermediate clutch pressure plate, they should all be present and in condition... Installed properly for effective sealing converter drives the pump and pressure relief are the top Crown... We also noticed it was misfiring when we took off from idle at 4 6! On our site, we looked under the misfire counter between 35 to 45 mph and lock... Front pump sealing: a gasket and install the reverse clutch retaining is. Rolled on square 4R70W is also not a great place to end your either! Looked under the misfire counter between 35 to 45 mph and full lock up in gear... With light throttle pressure, the pump bleeds over or cross leaks into the main case a name... Sealing: a gasket and install the intermediate clutch piston seal leak or badly worn intermediate clutches sure holes! But then, the front pump or filter might be the problem likely... A category as yet TRC has begun with the planet carrier during and... A bad idea, it engages the low-reverse band AODE/4R70W rotating mass is similar to that of the case! Has two forms of front pump checked and in place, using plenty of lubrication the! Which must be pointed toward the input shaft ( outer ) to the overdrive regulator... To torque in increments up in 1st gear filed under: the Best Ford Tech,.

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