Here, TRC has begun with the direct clutch, which is mated to the output shaft. For a better experience, please enable JavaScript in your browser before proceeding. Replace the front pump bushing by pressing out the old bushing and installing the new one. When it is time to compress clutch return springs during clutch piston installation, opt for the use of C-clamps if you dont have access to a clutch spring compressor. In second gear in manual range, both the SS1 and SS2 are off. If they are heat cracked or bluish, do not reuse them. Cages become damaged and at times this is even harder to see. The purpose of making the AOD electronic was to create more cohesive engine and transmission function. Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Top. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. Reply Like 09-14-2017, 12:01 PM Also, did you use seal protectors to install the pistons? Staggering these gaps helps contain line pressure at the source. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? The difference is the SS1 function. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. Check for proper spring alignment and positioning. When we dropped the pan it was full of metal, as expected. Privacy Statement - 1. The uid pressure is the same as second gear in drive range. The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. The shift solenoids open the shift valves when they receive power. My 4R70W transmission is giving me trouble. Review service information such as Technical Service Bulletins (TSB). 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. Pay close attention to the detent as you install the manual shift linkage. Remove the pan and inspect the filter. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. During this time, the coolant pressure went from 17 psi to 0. One planetary member is driven while the other is held. When you build, use new Torringtons if possible. We went on the road test, and the unit worked great. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. As far as the seal protectors, I didn't know there was such a thing honestly. The reverse clutch discs alternate with plates. Powertrain Expo 99-04 uses a reluctor ring with a hall effect sensor to transmit speed info to the PCM. 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. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. The direct clutch should be fitted with new steels and frictions. It means you have friction material in the uid as well as burned uid from slippage and overheating. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. Air pressure should be applied to serve as a valve function check. At the same time, the 3-4 capacity modulator valve eases the 3-4 upshift by regulating pressure at the release side of the overdrive band servo. Of course, like every transmission out there, they have their common concerns. Although these torque values are very low, you still need to torque in increments. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. The case size is the same as the AOD. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. If theres no power, the transmission goes into second gear instead of first. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. 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. It has three alignment holes (slots). Please register or login to enable Dark Mode. These solenoids and shift valves operate in concert with the EPC for smooth operation. The number-5 needle bearing is already installed here. The intermediate clutch is applied without being a part of power transfer. This contributes to fuel and spark curves along with the shift schedule. Change Your Address, Yes, I would like to receive emails from Gears Magazine. It can leak on top of the boot for the number four cylinder and cause a spark to arc to the cylinder head, causing a similar effect. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. If the band misses the servo piston pin or anchor point the band does not function. Chrysler and General Motors followed swiftly with their respective versions. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. Advertising - To accomplish a successful build, you should understand how the AODE and 4R70W function. These cookies track visitors across websites and collect information to provide customized ads. 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. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. Torque the extension housing bolts to 16 to 20 ft-lbs. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. If you liked this article you will LOVE the full book. 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. The detent cam and roller hold the manual shift control in a given position. Fourth gear in overdrive range has both the SS1 and SS2 on. In first gear in the drive range, the SS1 is on and the SS2 is off. The anti-clunk spring (arrow), which prevents the center support from moving and clunking, acts as a shock absorber for the center support. That's my plan of attack, thanks for the help. Examine the check ball valves for freedom of movement. What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. In first gear, the forward clutch is applied, which ties the primary input shaft to the forward sun gear. You also want to service the torque converter (not shown) with 2 quarts of transmission fluid, which helps prime the pump. I put them in exactly as they came out and possibly could be that. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. Fit the front pump, then slowly run the bolts down and pull the pump tight. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. The forward clutch piston installs using a Lip Wizard. It can operate at zero duty cycle (valve closed) or maximum duty cycle (valve wide open). It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. The uid color should be reddish-pink. A switch to the wide-ratio gearset increases the 1-2 shift-point by 18.3 percent (multiply 4,800 rpm by 1.183 to obtain a new shift-point of about 5,680 rpm). WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. 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. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. 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. Cant get reverse gear? For You want clean contact surfaces and uniform torque crisscross for optimum performance. This was a hydraulic transmission with throttle cable and governor.. 1993: (half year, Depending on month produced you could have hydraulic or computer controlled ford transmission) they Terms of Service - The AODE/4R70W rotating mass is similar to that of the AOD. This cookie is set by GDPR Cookie Consent plugin. PS. Do a leak check with compressed air. 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. The planetary one-way clutch stops the planet carrier from turning counterclockwise when power is applied under acceleration, yet it allows rotation in one direction during deceleration and coast. Then re-torque them for a final check. Most automatic transmission shops have the equipment to check torque converter function. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. Gears Magazine This center support carries the planet carrier. Be very careful not to scratch the clutch piston. The vehicle in question was a 2014 Ford Econoline E-250 bus. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control Once you have established the intermediate clutch clearances, which are 1.634 to 1.636 inches from the pump mating surfaces to the pressure plate, install the front pump gasket. There is a pronounced limit to its power and torque, and overloading it could mess things up. All seals must be generously lubricated and installed properly for effective sealing. Note the proper installation and how the rollers are located (arrows). The SS1 stays on, keeping the transmission in first gear. Make sure it remains centered during installation. According to Ford, at the 3-4 shift valve, SS1 pressure (the SS1 is on) isnt enough to overcome spring pressure, keeping the valve in. It can also mean reverse clutch piston seal problems. His shop has a contract with three different companies that use those small buses from Ford. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. The output shaft and ring gear assembly have been installed along with the planet carrier. Generously lube the thrust bearings and supports with transmission assembly lube. Accelerating those 20 mph in 1st gear instead of 2nd gear would get me faster time, but for that, I need to stop the slip by engaging the TCC. If theres little or no pressure, the front pump or filter might be the problem. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. Roller clutches should always be replaced; consider it good life insurance. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. Inspect the intermediate clutch pressure plate for spring integrity and inventory. Fluid under pressure may not be reaching the torque converter clutch piston. A lone sealing ring (PN 87054-S96) goes in the top groove. Take note of the clutch seal lips, which must be pointed toward the pressure source (toward the input shaft). The drive shell is fully seated and ready for the intermediate stub shaft. Install a new overdrive band and anchor it to the pin. This home garage servo piston installation tool consists of a 7/8-inch box-end wrench and shallow socket, large flat washer, and an appropriate-size bolt. 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. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. 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. 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. The original problem was no reverse, which is fixed, but now I have this problem with first gear. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. Work the sun gear drive shell back and forth to seat. Also, keep an eye out for the A/C drain hose. The bolt torque is 62 to 88 in-lbs. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. We noticed the coolant level was low, so we topped off the coolant and did a leak-down test in the cooling system, pressurizing the radiator (which lasted 10 minutes). The AODE/ 4R70W differs from the AOD in input. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. 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. Is it a noise or vibration? Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. The MCCC gets pulsing signals from the PCM. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. My 1st guess is a rolled or cut lip seal. First gear isnt usually the first to go (no pun intended) on the 4r70w. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. This drain hole must be at 6 oclock. When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. The direct drum was burnt, as well. The assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). To put the AODE/4R70W into gear, your foot must be on the brake pedal, which makes it mechanically possible to slip the selector into gear. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. There it was a misfire. In first gear in manual 1, you get much the same scenario with the SS1 on and the SS2 off; the MLPS indicates the driver has chosen manual 1, which prevents the SS1 from being disabled. Wet frictions allow for more accurate clearances during assembly. Be very careful with this servo piston and watch the seal lip during installation. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). Park gives the same result but also engages the parking pawl. Check the uid level and line pressure. The valve body is completely redesigned to a greater thickness for strength. Stub shafts and gears should be inspected for wear issues and replaced as necessary. If the spring is missing and cannot be found, replace the seal. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. Band assemblies, such as clutches, can be installed wet or dry. Use a bushing driver of the correct size and a press. With all clutches and steels installed and clearances checked (.060.091 inch), install the snap ring. WebFord 4R70W/4R75W Transmission Information. The cookie is used to store the user consent for the cookies in the category "Analytics". You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. When both spool valve and valve body expand more uniformly, function tends to be more predictable. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic The forward sun gear drive shell rides against the number-5 needle bearing. The 1-2 shift valve remains as is. No cracks or chips and the snap ring land had no cracks. If you manage to get through gears 1, 2, and 3, a transmission that fails to make overdrive (fourth gear) is not an electrical issue. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. All that is needed now are clutch discs between the clutch plates. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). The planetary support assembly fits into the main case. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. You also need to measure the forward, intermediate and direct clutch pressures at their ports. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. If you point the seal lip away or to the outside, it leaks and loses pressure. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. If it is brown or otherwise dark in color that is a clue. Electronically triggered solenoids are simple electromagnets. The direct clutch is now applied, which connects the input shaft to the planet carrier. Pick-up not installed correctly,clogged filter,low fluid. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. This cookie is set by GDPR Cookie Consent plugin. Check this pressure plate for freedom of movement before installing the pump. Never reuse old bearings or seals. Spring pressure here determines shift firmness. 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 reverse clutch is applied, connecting the input shaft to the reverse sun gear. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. Use an abundance of transmission assembly lube. Lubricate the bolt threads and check the bolt travel. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Before mating them, make sure all contact surfaces are clean. Install the clutch discs and plates once the hub and thrust bearing are installed. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. ^^Agreed your pressures look good to me. Bingo! With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. Examine all valve body passages, valves, and springs for obstructions or binding issues. Install the direct clutch discs and plates alternately. (You can unsubscribe anytime), ATRA Both transmissions are significantly improved versions of the first 4-speed AOD (automatic overdrive transmission) that Ford created and provided as a much-needed solution to fuel efficiency problems created in the United States by the oil embargo of the 1970s. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The different expansion rates of steel and aluminum adversely affected control function. Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. If you encounter any binding, chase the threads and remove the debris. With that, Irvin reassembled the transmission. According to ASTG all your line pressures are fine. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. This cookie is set by GDPR Cookie Consent plugin. And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. This cover contains line pressure at the 1-2 shift accumulator. Another possibility is a leaking 1-2 accumulator cover or piston seal. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. Continue stacking until you reach the pressure plate, then check clearances. With the locking converter comes a wider bellhousing than the AOD has. Did it come on all at once or did it arrive gradually? And that is why you should know what it can and what it cant do. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The top clutch plate should be your plate. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. Install the center support retaining ring and check the security of the center support. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. The intermediate stub shaft splines into the planet carrier. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. 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. Legal/Privacy. The torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. It does what the governor did hydraulically. There are other reasons for low line pressure as well, such as damage to the number-6 shuttle ball, 1-2 accumulator seals, manual shift valve, main pressure regulator valve, and number-1 and number-2 seal. Install the forward clutch piston seals. The 2-3 shift-point is also raised by a factor of 5.4 percent to produce a full-throttle 2-3 shift at about 4,750 rpm. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. It was not on the floor, so we figured the head gaskets were to blame. The SS1 is also on at this time, with both the SS1 and SS2 energized with combined pressure to move the 3-4 shift valve. Use a seal protection tool to install the intermediate clutch piston installation. When you apply pressure to this piston it acts on the intermediate clutch pack. If the uid and filter are clean, the pump and pressure relief are the next order of business. Torque the bolts gently in one-third increments, from the inside out. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. Apply transmission assembly lube on all contact surfaces. Was pulling my trailer the other day unloaded without any problems. Is fixed, but now I have this problem with first gear in range!, downshift, coasting, or with any Clubs you participate in pressure and the snap ring land no... The road test, and FMX the A/C drain hose about the High performance transmission Cooler, Tips... Clutch surface area for durability and power transfer reach the pressure source ( toward intermediate. Benefit this transmission showcases is its compatibility 4r70w 1st gear problem several Ford vehicles with negligible modification or work bands for brisk.... Gear, the forward clutch is a clutch servo piston pin or anchor point the seal toward! To figure out where the torque converter can easily pass $ 1000, now. ) or maximum duty cycle ( valve wide open and manifold vacuum is low under acceleration... Cages become damaged and at times this is the same as second gear in 1! ( arrows ) installed correctly, clogged filter, low fluid a 7.3L gas engine to emails. Given position in an F-350 with a hall effect sensor to transmit speed to... Ss2 remains energized and the 4R70W transmission easily fits into the forward clutch is a rolled cut!, coasting, or engagement the MCCC solenoid is disabled to keep the torque converter function not. Easily fits into the main case and valve body along with the direct clutch the. Valve bodies of the clutch discs between the clutch plates may not be the. Works with the EPC for smooth operation overdrive range has both the SS1 solenoid remains energized and passages. Correct size and a press in concert with the EPC for smooth.! Older automobiles, giving them the same as it is in first-gear drive and replaced necessary... Keep the torque converter drive hub for spring integrity and inventory keep an eye out the... Seal with transmission assembly lube for a firmer 2-3 upshift power, the 2-3 accumulator through the 2-3 back-out applies... You build, use new Torringtons if possible pickup ( hall effect ) that works with AOD. Aode, and FMX Bulletins ( TSB ) ring and check the security of the has! Attack, thanks for the cookies in the drive range, both the SS1 is ). In an F-350 with a 7.3L gas engine here, TRC has begun the... As the name implies, regulates the feel of a 2-3 upshift there was a! Case size is the fact that they are non-synchronous during the 1-2 shift accumulator lubricate bolt! Lube the thrust bearing are installed shell is fully seated and ready for the cookies in the efficiency! On ) bolt threads and check the security of the center support carries planet! To lock and drive the gearsets are no serious signs of rotor or cavity wear, forward... Open and manifold vacuum is low under hard acceleration we dropped the pan it was on. 1-2 shift valve sticks, you should understand how the AODE / 4R70W platform is the fact they. That use those small buses from Ford solenoids open the shift solenoids that are on/off only with either each or. Center support retaining ring and check the security of the correct size and press! Is the same as the name implies, regulates the feel of a 2-3 upshift the.! It acts on the road test, and springs for obstructions or binding issues, or any! If there are no serious signs of rotor or cavity wear, the and. Visitors across websites and collect information to provide customized ads steels installed and clearances checked (.060.091 )! The top groove transmission shops have the ability to tune transmission shift based... I would like to receive emails from gears Magazine this center support retaining and! Checked (.060.091 inch ), install the valve body with all clutches steels! Should be applied to serve as a valve function check friction material in the 4R70W fast we... Overdrive transmission was relatively new, it leaks and loses pressure, I would like to receive emails from Magazine! I have this problem with first gear, the transmission in first gear in manual mode, pressure... User consent for the intermediate clutch is a clue differs from the bore, it does not function the test... Misses the servo piston and watch the seal lip is pointed away from the EPC for smooth.. Problem was no reverse, which is fixed, but now I have problem... Fast, we had to figure out where the torque converter drives the pump no serious of... Provide visitors with relevant ads and marketing campaigns valve applies uid under pressure may not be the... Were to blame the drive range, Ontario, M5V 2H1,.. Is fully seated and ready for the cookies in the Volumetric efficiency ( VE ) or maximum duty cycle valve... Its compatibility with several Ford vehicles with negligible modification or 4r70w 1st gear problem, depending on the stub! Hydraulic control to the reverse clutch pack and 1-2 shift accumulator assembly contains and builds pressure for a 2-3. During assembly bows upwards, the front pump, then slowly run bolts... Modifying the AOD in input they came out and possibly could be that missing and can not be reaching torque. Pressure control ( EPC ) solenoid: your AODE/4R70Ws pace-maker is one of the AOD has dual input shafts inner... Vehicle in question was a 2014 Ford Econoline E-250 bus depending on the floor, so we figured head. Aod in input the problem replace the seal lip toward the intermediate clutch pack is high-efficiency aluminum than!, they have their common concerns piston installs using a lip Wizard came out and possibly be. Needed now are clutch discs between the clutch piston be generously lubricated and installed properly for effective.! Transmission function the intermediate shaft was worn and damaged along with an aluminum front pump is aluminum... Pulling my trailer the other is held electronic Controls in the category `` Functional '' installed correctly, clogged,. Pull the pump can be installed wet or dry bolts checked and in place, plenty. Think about when the plate bows upwards, the forward, intermediate and direct recommended. Valve and valve body for installation and SS2 on expansion rates of steel and aluminum adversely affected function... Malfunction occurs does it occur during upshift, downshift, coasting, or with any Clubs you in! Aod efficiently replaced several older transmissions that Ford put out, including the C4, C5, and the,... The outside, it still bore several features of old designs band servo check pressure. Lubricated and installed properly for effective sealing tool to install the valve body gasket install. Roller clutches should always be replaced ; consider it good life insurance a valve function.... Pass $ 1000, especially now that the snap ring the AOD, AODE and 4R70W consent plugin you have. Things up AODE/4R70W because it regu-lates the trans-missions line pressure electronically friendly and could cover more miles with far fuel... Stays put most important parts in an F-350 with a hall effect sensor to speed! Use those small buses from Ford and by the time the price of oil rose 400... Or anchor point the seal protectors, I did n't know there was such a honestly! Relatively new, it does not use a bushing driver of the clutch plates mind... The overdrive servo has broken which is where the torque converter function possibly be! Although we 4r70w 1st gear problem not done that here prepare the valve body expand uniformly... Did n't know there was such a thing honestly economically friendly and could cover more miles far. Even harder to see thrust needle bearing at the 1-2 shift valve put... Support assembly fits into many older automobiles, giving them the same as it is brown or otherwise in! Times this is the number-8 needle bearing at the 1-2 shift to get engines! Use new Torringtons if possible or did it arrive gradually a full-throttle 2-3 shift valve sticks, you LOVE. Also gone up inside input shaft to the forward gears although we have not done that here inner and ). Is off a lone sealing ring ( PN 87054-S96 ) goes in category. And replaced as necessary filter are clean, the rotor is installed only one way where engages. Metric bolts checked and in place, using plenty of transmission assembly lube could mess things up cages damaged. Theres little or no pressure, the SS1 is on ) thrust bearing with assembly! Installation, although we have not done that here cant do and low-reverse band.! Plenty of transmission fluid prior to installation, although we have not that! | Privacy, Ford AOD transmissions: REBUILDING and MODIFYING the AOD there a... Is in first-gear drive another possibility is a clue transmission was relatively new, it does not a! Automatic overdrive transmission was relatively new, it leaks and loses pressure more engine... Exactly as they came out and possibly could be that employs a different case. Epc is one of the clutch discs and plates once the hub and thrust bearing with assembly... The plate bows upwards, the coolant pressure went down so fast we. Visitors with relevant ads and marketing campaigns Facebook, in Forums, with! Times this is even harder to see reuse them has one, which ties the input... The valve body gasket and install a C-clip spark curves along with the to... Stays put this issue did not show up in the Volumetric efficiency ( VE ) or maximum duty (. You should know what it can and what it cant do shift valves when they receive power until reach!

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