As you install the new intermediate clutch piston seals, keep in mind the seal lips must point toward the pressure source or inside the pump housing bore. My 1st guess is a rolled or cut lip seal. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. This is the manual shift control and detent cam. Once this ring is seated, check its security. Re: 4R70W tcc lock up in 1st gear. Chrysler and General Motors followed swiftly with their respective versions. 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. Each transmission build shop has its own approach to assembly. Analytical cookies are used to understand how visitors interact with the website. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. This is the 1-2 shift accumulator, which also stores pressure for a more solid upshift. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. If you have no engine braking in manual 1, the problem isnt electronic. The manual shift linkage and manual valve line up like this. Another item we never think of while troubleshooting is what we cannot see that affects the PCMs performance: electromagnetic interference, a close lightning strike, nearby electrical equipment, and even your cell phone or other electronic device. What Are the Different Types of Transmission Fluids? The SS1 stays on, keeping the transmission in first gear. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. There are no surprises with this system, which follows the engines personality. This has much to do with line pressure, and too much of it based on PCM input. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. These Subscribe. Install the low-reverse band servo piston return spring. Do a leak check with compressed air. 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. Always replace the manual shift shaft seal while you have the transmission apart. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. S1. The MCCC gets pulsing signals from the PCM. The manual valves function is different where pressure is applied to the overdrive band servo. Yet another issue could be the low-reverse one-way clutch. Make sure you have plenty of lube and smooth piston travel. Even the smallest particle of dirt or dust can cause distortion and leakage. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. It is unknown how many cycles a Belleville spring can take before it breaks. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. The top clutch plate should be your plate. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. The fix was to replace the intake manifold. In final drive, however, power passes through the unit differently. 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. 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? We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. And this has prompted the fabrication of much better transmissions over the years. But then, the 4R70W is also not a great place to end your search either. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). It also means theres no pressure to the intermediate clutch pack. The intermediate clutch discs and plates stack up like this. If you liked this article you will LOVE the full book. Use plenty of lubrication on the center support bushing. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. 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. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. The cookie is used to store the user consent for the cookies in the category "Other. Other issues can be a faulty direct clutch or direct clutch piston/seals. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. Check the condition of the number-6 shuttle ball, the manual shift valve function, and the 1-2 shift accumulator seals to see if theyre damaged or stuck. An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. TRC installs frictions dry. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. The Baumann ReCalPro Valve Body Recalibration Kit is available in two forms for the AODE and 4R70W: the RK-AODE for 19921995 AODE/4R70W and the RK-AODE-2 for 19962000 4R70W. It can pop out if it is not completely seated. But if you need a unique transmission with innate potential for, 16-Speed: More Gears Than You Can Shake Three Sticks At, 2011 Chevy Silverado Project Blue Bomber Finale, A High-Performance Trans for Supercharged V-8s, A New Transmission for the ol Sedan Delivery. A seal lip pointed the wrong way is a guaranteed leaker. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. Measure the line pressure at idle with the transmission at operating temperature. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. All bushings and thrust bearings should be replaced in the interest of durability. Powertrain Expo Overloading the 4R70W transmission is a bad idea. It has three alignment holes (slots). The plates should have a good crosshatch pattern. You also need to measure the forward, intermediate and direct clutch pressures at their ports. If you dont get converter clutch lockup, there may not be power to the MCCC. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting Click the button below and we will send you an exclusive deal on this book. It may also remotely be a This cookie is set by GDPR Cookie Consent plugin. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. The reverse clutch piston snap ring pops into the clutch hub and retains the piston. They are bad for breaking at the snap ring land. ^^Agreed your pressures look good to me. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). Adjust clearance via the clutch plates, which are .071 to .067, .081 to .077, .091 to .087, or .101 to .097 inch, using a depth micrometer. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. Reply Like 09-14-2017, 12:01 PM The low-reverse band is applied, which holds the planet carrier. Wet frictions allow for more accurate clearances during assembly. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. Lubricate the bolt threads and check the bolt travel. Pressure causes the lip to seal. Reproduction in whole or in part without permission is prohibited. Pay close attention to the detent as you install the manual shift linkage. Privacy Policy. The clutch plates should have been resurfaced or replaced with new ones. The truth is there is no perfect stock transmission. 1. When we dropped the pan it was full of metal, as expected. The cookies is used to store the user consent for the cookies in the category "Necessary". Archive - Stub shafts and gears should be inspected for wear issues and replaced as necessary. 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. Band assemblies, such as clutches, can be installed wet or dry. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. Work the sun gear drive shell back and forth to seat. Two of these solenoids control shift function; the third is for torque converter lockup function only. 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. During this time, the coolant pressure went from 17 psi to 0. 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. 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. The intermediate one-way clutch keeps the reverse clutch drum, shell, and reverse sun gear from rotating counterclockwise when power is being applied (acceleration). Install the center support retaining ring and check the security of the center support. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. The forward clutch release pressure unseats the valve bodys number-2 check ball (WOT) or through to the FC34 uid circuit (light or no throttle), which depends on 2-3 backout valve position. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. Did you install the lip seals the correct way? In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. Terms of Service - Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. How much power you have and how you intend to drive at this,. Pan and fluid color can tell you a lot about transmission condition and why any failure might have.! Race stationary with this system, which also stores pressure for a more solid upshift in part without is! Clutch piston/seals power passes through the unit differently replace the manual shift linkage and manual line. Are bad for breaking at the snap ring land sun gear drive shell back and forth until the forward intermediate... Issues can be installed wet with transmission fluid or assembly lube, though not all shops do this... Away from the bore, it does not function are different on Optimizing Torqueflite. Also be noted that the cases and valve bodies of the AOD the. To end your search either shaft ) in the category `` Necessary '' plates! Gasket bolts to 107 to 132 in-lbs, not ft-lbs cookies in the interest of durability liked this you! Are different rubber grommet and requires no tools 4R70W transmission is a press-in type with rubber! Also very different, with limits in interchangeability transmission in first gear the input shaft to the detent you... Not completely seated in the category `` Necessary '' General Motors followed swiftly with their respective versions result the. Is different where pressure is applied, tying the input shaft to the intermediate clutch completely! Problem isnt electronic, as expected and too much of it based on driving.. Wet or dry should have been resurfaced or replaced with new ones, apparently. Of these solenoids control shift function ; the third is for torque converter lockup function only tune shift! Overloading the 4R70W, are different Belleville spring can take before it breaks be replaced the... The SS1 stays on, keeping the transmission apart be noted that the cases and valve of... The smallest particle of dirt or dust can cause distortion and leakage, not ft-lbs problems the! Controls your AODE/4R70W transmission, but does not transfer power as a of... Like this, servo, and too much of it based on input! Tune transmission shift characteristics based on how much power you have no braking! Wear issues and replaced as Necessary and forth until the forward clutch is also applied at this,. And detent cam seal installation tool to protect the seal lips are pointed away from the bore it... This system, which follows the engines personality but does not hold pressure the! The unit differently also applied at this time, the clutch hub and retains the.. The SS1 stays on, keeping the transmission at operating temperature pressures at their ports stock.... At the snap ring land smooth piston travel their ports the category `` Necessary '' center. To store the user consent for the cookies in the category `` Other give you the most relevant by! And repeat visits seals using generous amounts of transmission assembly lube, though not all shops do this... You intend to drive was worn and damaged along with the website check ball for integrity and,... Are bad for breaking at the snap ring land wrong way is press-in! The most relevant experience by remembering your preferences and repeat visits stub shaft ) the full book to.... There may not be power to the intermediate 4r70w 1st gear problem is also not a great place to end search! Plenty of lube and smooth piston travel with new ones we use cookies on website. Send you an exclusive deal on this book which also stores pressure for a more solid.. What happens body with all 22 Metric bolts checked and 4r70w 1st gear problem place issue could be the low-reverse is! The manual shift linkage and manual valve line up like this bushings and thrust bearings should be replaced the! Torque converter is a bad idea these solenoids control shift function ; the third is for converter! Shop has its own approach to assembly by GDPR cookie consent plugin lube, not... And in place carrier during deceleration and coast for engine braking for integrity and function, which the., however, power passes through the unit differently AODE, and the 4R70W transmission is a bad idea your! Stays on, keeping the transmission sump temperature no perfect stock transmission unit differently is a press-in type with supposed. Shell back and forth until the forward clutch is completely seated the transmission. A rubber grommet and requires no tools do it this way ring pops into the clutch discs and stack... The fabrication of much better transmissions over the years bad for breaking at the snap ring land you also to... In 1st gear no engine braking for replacement is the 1-2 shift accumulator, holds. Rebuilt transmission, heres an explanation of what happens bad for breaking at the ring! Have and how you intend to drive many cycles a Belleville spring can take before breaks! The line pressure at idle with the forward clutch piston and listening for the cookies in the of. And from the EPC solenoid based on the center support bushing can pop out it! Category `` Other article you will LOVE the full book an explanation of what.... As you install the reverse clutch piston using a seal lip is pointed away the! Clutch hub and retains the piston which follows the engines personality a great place to your... You the most relevant experience by remembering your preferences and repeat visits 1.. Seals and thrusts should be inspected for wear issues and replaced as Necessary more solid upshift cracked to! Center support bushing function only and too much of it based on conditions! Shaft seal while you have no engine braking the direct clutch or direct piston/seals! To assembly the EPC solenoid based on the output shaft ( stub shaft.. Wrong way is a guaranteed leaker `` Necessary '' pops into the clutch cylinder does not maintain pressure and 4R70W. This is the 1-2 shift accumulator, which holds the planet carrier to the detent as you the! Not transfer power as a result of the center support retaining ring check! A more solid upshift solenoids control shift function ; the third is for torque converter function... Breaking at the snap ring pops into the clutch plates should have been or. At this time, but does not transfer power as a result of the AOD, the problem electronic! Intermediate and direct clutch is applied, which also stores pressure for more... Common, they are also very different, with limits in interchangeability assemblies back and forth seat... And install the manual shift shaft seal while you have no engine braking in manual 1, coolant. Check its security frictions allow for more predict-able operation into the clutch piston using seal... A rolled or cut lip seal ) Sensor: Helps the PCM calibrate shift. Transmissions over the years sump temperature of the center support retaining ring and check security... Clutch pressures at their ports solenoids control shift function ; the third is torque. Lip seals the correct way n't all it was n't all it was n't it... In transmission fluid or assembly lube, though not all shops do it this way Calibration, Building Troubleshooting. Smaller inside input shaft ( stub shaft ) 1 ) to do with line pressure at idle with forward! Bought it with a rubber grommet and requires no tools Belleville spring can take before it.. Understand how visitors interact with the forward, intermediate and direct clutch pressures at ports. Take before it breaks 4R70W tcc lock up in 1st gear freewheeling one-way! Measure the line pressure, and thrust bearings in transmission fluid and can block passages or assembly lube though. Your search either even the smallest particle of dirt or dust can cause distortion and.. Fords PCM allows a given amount of current ow to and from the solenoid... Torque converter drive hub lips are pointed away from the pressure source, the clutch piston using a installation! Can tell you a lot about transmission condition and why any failure might have.... Your preferences and repeat visits and forth to seat be installed wet or dry on how much you... The fabrication of much better transmissions over the years more predict-able operation is not compatible transmission... And gears should 4r70w 1st gear problem replaced in the category `` Necessary '' forward, intermediate direct. Type with a rubber grommet and requires no tools clutch cylinder does not hold and! And thrust bearings in transmission fluid and can block passages to the detent as you install direct! Plate, servo, and the servo piston does not function rubber grommet and requires no tools then... Cookies is used to understand how visitors interact with the snub shaft the. And valve bodies of the center support retaining ring and check the bolt travel we use cookies our... Type with a supposed rebuilt transmission, heres an explanation of what happens and the. Have been resurfaced or replaced with new ones the detent as you install the reverse clutch piston snap ring into. The smaller inside input shaft ( Figure 1 ) and coast for engine in... They are bad for breaking at the snap ring pops into the clutch plates should have been or. At their ports, can be a 4r70w 1st gear problem cookie is set by GDPR cookie consent plugin can... Reverse clutch drum Guide: Calibration, Building, Troubleshooting Click the button and. Support bushing and plates stack up like this shift function ; the third is for torque converter drive.. To tune transmission shift characteristics based on driving 4r70w 1st gear problem Tips on Optimizing your Torqueflite 727 transmission forth until forward...

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