Did you remove the valve body when you fixed your other problem? When there is no power, the shift valves are closed. The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. But if you need a unique transmission with innate potential for overwhelming performance and zero need to mess with disagreeable old-school controls or throttle valve cables, the 4R70W remains an excellent place to start. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. This keeps the transmission in first gear. Copyright 2006-2020 GEARS Magazine. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. Diagnose the problem (accurately diagnose). It does affect clearances. 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. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. All others 50-75 psi. This cover contains line pressure at the 1-2 shift accumulator. In part 2 of this series we show the transmission torn Clutch clearances should be .040 to .059 inch. If you encounter any binding, chase the threads and remove the debris. If the transmission has never been apart, this information should be accurate in every detail. Gears Magazine Install the number-9 needle bearing in the case, using transmission assembly lube. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. When in drive, first gear slips but when in manual first gear, no slippage. This is the intermediate one-way clutch installed. Protect your eyes and face for this step. Pick-up not installed correctly,clogged filter,low fluid. Also, keep an eye out for the A/C drain hose. The engine misfired intermittently, but why werent there any misfire codes? I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). Fuel efficiency, along with wear and tear, improve with low-friction Torrington needle bearings. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting 1. Wet frictions allow for more accurate clearances during assembly. 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. 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. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. Archive - Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. I would start by removing the valve body and inspecing it first. Spring pressure here determines shift firmness. Do Not Sell or Share My Personal Information. If you liked this article you will LOVE the full book. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. 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. Servo apply pressure is controlled by the low servo modulator valve. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. TRC installs frictions dry. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. 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. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. Before mating them, make sure all contact surfaces are clean. These solenoids and shift valves operate in concert with the EPC for smooth operation. 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. This is the forward clutch with input shaft. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. 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? Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. But then, the 4R70W is also not a great place to end your search either. Double-check the security of the band at the servo and anchor pins. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. This allows for a pressure path to the direct clutch (engaged). Does the engine stall when the transmission selector is placed in gear? ^^Agreed your pressures look good to me. Do not get this backward. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. While this might not be a bad idea, it could lead to a clearance issue. Be sure you know the proper location for these sealing rings and seals. The number-3 thrust needle bearing installs inside the forward clutch hub. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. Lose the spring and you will have slip-yoke leakage. 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. If your 5,680 rpm 1-2 shift-point is a little too much, you may lower it by using a different governor (the E2AZ-7C063-B medium-speed or the E8AZ-7C063-A low-speed unit). Check the uid level and line pressure. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. This transmission has lower gear ratios in first and second gears, which brings about improved By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. The forward clutch friction and steel clearances should be .050 to .089 inch. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. This installs exactly as you see here with a cover and C-clip. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. 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. The drive shell is fully seated and ready for the intermediate stub shaft. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. The direct clutch hub goes up against the number-7 thrust bearing. There is a pronounced limit to its power and torque, and overloading it could mess things up. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. It may also remotely be a The reverse clutch piston snap ring pops into the clutch hub and retains the piston. By clicking Accept, you consent to the use of ALL the cookies. Use plenty of lubrication on the center support bushing. No 1st Gear Been having issues with the truck accelerating slowly. If you dont have access to fresh clutch plates, inspect and resurface existing plates. The only inter-changeable components are geartrain related. 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. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. Click the button below and we will send you an exclusive deal on this book. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. Top. Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. Chrysler and General Motors followed swiftly with their respective versions. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. Bingo! Darkness indicates contamination and overheating. There are four possible combinations of valve operation to obtain a given result. If the spring is missing and cannot be found, replace the seal. While youre at it, check the manual shift linkage and manual shift valve. In second gear in manual range, both the SS1 and SS2 are off. What Are the Different Types of Transmission Fluids? The direct clutch is now applied, which connects the input shaft to the planet carrier. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. Remove the pan and inspect the filter. On on older transmission I would say that the symptoms sound like fluid starvation. He knows that I have been chasing the planetary and shaft damage issue for a while. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! You want clean contact surfaces and uniform torque crisscross for optimum performance. So 1st gear can go out but youll still have man 1st. A lone sealing ring (PN 87054-S96) goes in the top groove. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. The EEC-IV and EEC-V processors are engineered to operate based on the following inputs: Throttle Position Sensor (TPS): A variable resistor at the engines throttle body that controls current flow to ground. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. Install a new overdrive band and anchor it to the pin. If They are controlled via two different hydraulic circuits. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. At WOT, you want high line pressure for firm clutch and band engagement. And since then, several regulations and rules to considerably improve the quality of air and fuel efficiency have been published. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. Installing them wet gives them a good start against freshly resurfaced clutch drums. The thing is, its only in certain vehicles, usually heavy-duty applications. 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. 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. These cookies will be stored in your browser only with your consent. Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. When you build, use new Torringtons if possible. Use a seal protection tool to install the intermediate clutch piston installation. If your AODE/4R70W experiences no 3-4 upshift, it is a sticking 3-4 shift valve, overdrive servo issue, or a failed overdrive band. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. 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 case size is the same as the AOD. Also, did you use seal protectors to install the pistons? The harness protects the wiring. 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. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). Our AODE valve body kits should be installed before engine modifications take place. The MCCC again gets pulses from the PCM tied to driving conditions. The pressure regulator valve bore in the valve body was worn out. TIPM Problems! Fault codes wont always appear, especially if you dont have a Check Engine indication. Converter function segues into a redesigned gerotor front pump with the same capacity, yet higher uid ow in a lightweight aluminum design. Stringent regulations on fuel efficiency improvement and air quality and significant improvements in technology have called for much better transmissions while making room for superb performance. were also part of its components. Take note of how the rollers fit into the cage. For a better experience, please enable JavaScript in your browser before proceeding. Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. Generously lube this assembly and install it, along with the cover. Is there any tests I can do without pulling the trans first? Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. There are four grooves but just three sealing rings. It could also be a misfire. Another possibility is a leaking 1-2 accumulator cover or piston seal. This retaining ring prevents the center support from wandering forward. 1. 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. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. Privacy Policy. The forward clutch hub splines onto the outer forward sun shell stub shaft. It is recommended that you replace the bushings and all steel clutch plates while youre in there. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. Never reuse old bearings or seals. Is it a noise or vibration? 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 the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. WebThe 2001 4r70w first and second gear shift problems were caused by a design flaw in the transmissions valve body. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. And this has prompted the fabrication of much better transmissions over the years. Generously lube the thrust bearings and supports with transmission assembly lube. Reproduction in whole or in part without permission is prohibited. There it was a misfire. In other words, are the two pump halves securely tightened? This shaft operates inside the outer stub shaft. 178 subscribers. 2.7K views 3 years ago. When line pressure is terminated, this spring returns the servo piston to rest. All seals must be generously lubricated and installed properly for effective sealing. The plates should have been resurfaced or replaced. 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. What gives? Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. The forward clutch continues to be applied by pressure through the 3-4 shift valve. These cookies track visitors across websites and collect information to provide customized ads. Others install them wet. 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 4R70W differs from the AODE in terms of gear ratios. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. Cart However, for the sake of longevity, replace yours. The Fora platform includes forum software by XenForo. Members The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. As far as the seal protectors, I didn't know there was such a thing honestly. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Have you checked the fluid for proper level and burning In reverse, the SS1 is on and the SS2 is off. (You can unsubscribe anytime), ATRA Transmission Control Module: Buyers Guide for Classic Cars. 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 When we dropped the pan it was full of metal, as expected. Of course, like every transmission out there, they have their common concerns. 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. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. 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. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. 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. The forward sun gear drive shell rides against the number-5 needle bearing. Too much line pressure and you can break the transmission case. The torque converters turbine drives the input shaft. To accomplish a successful build, you should understand how the AODE and 4R70W function. I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping If clutch and servo are an issue then internal work is needed. It has three alignment holes (slots). 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 That's my plan of attack, thanks for the help. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. If this cannot be achieved, go with the appropriate retaining ring: .060 to .064, .074 to .078, .088 to .092, or .102 to .106 inch. Overloading the 4R70W transmission is a bad idea. During installation, watch the seals and protect them from distortion. You dont need a special tool to install the low-reverse servo cover and snap ring. The cookie is used to store the user consent for the cookies in the category "Other. How did the forward clutch drum look? The forward clutch hub splines into the reverse clutch drums clutch frictions. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. Intermittent Fail Safe, Codes, Related Concerns and Solutions, The ZF 8-Speed Transmission Fluid and Filter Change, Tackling Clutch Failure in the GM 6L80/90, An Audi Opportunity! Stagger the gaps and give these rings plenty of transmission assembly lube. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. The planetary one-way clutch overruns. Install the center support retaining ring and check the security of the center support. All bearing surfaces should have been lubricated. 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). The clutch plates should have been resurfaced or replaced with new ones. In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. 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. Install the low-reverse band servo piston return spring. Analytical cookies are used to understand how visitors interact with the website. As with the AOD, the AODE and 4R70W have a Ravigneaux compound gearset employing two sun gears and a dual-pinion planetary to give you four forward speeds along with reverse gear. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. Closely inspect all hard parts for scoring and cracking. In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. Park is the last manual detent when the linkage is full forward. Fax: 330-434-3634, 2023 Gearstar Performance Transmissions. Review service information such as Technical Service Bulletins (TSB). Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. The AODE/4R70W rotating mass is similar to that of the AOD. Contact Us - Subscribe Now Ford Forum is a community to discuss all things Ford. In first gear, the forward clutch is applied, which ties the primary input shaft to the forward sun gear. 2001 Expedition, 4.6L engine, 4R70W transmission. Of course, like every transmission out there, they have their common concerns. 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. And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. Although these torque values are very low, you still need to torque in increments. Lay the clutch discs and plates into the reverse clutch drum. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. The cookie is used to store the user consent for the cookies in the category "Performance". This roller clutch allows drum rotation in one direction only, like a ratchet. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. The direct clutch should be fitted with new steels and frictions. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). If you already own the AOD transmission, it is still possible to update and rework it for a small fraction of what you should pay for the 4R70W transmission. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. An AODE/4R70W not going into gear could mean problems with the forward clutch piston sealing and check balls. The uid color should be reddish-pink. Re: 4R70W tcc lock up in 1st gear. This is the manual shift control and detent cam. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. It can also mean reverse clutch piston seal problems. Lubricate the bolt threads and check the bolt travel. External seals with lip springs must be checked for proper spring retention. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. Fluid starvation manufactured by McDonnell Douglas.The DC-10 was intended to succeed the for... Phone ( 800 ) -373-8432 take place successfully, the SS2 is off makes! The trans-missions line pressure electronically are terrific factory transmissions that meet the demands providing... Is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range.. Also, keep an eye out for the A/C drain hose family different from most Ford is... It could lead to a clearance issue flaw in the valve body to rest AODE/4R70W front.! Can block passages any transmission gaskets ; it is not compatible with transmission assembly lube needed complete! Filter, low fluid behave erratically when downshifting of appropriate thickness has gone... Sticks, you want high line pressure from the EPC is one of the important. A spring compressor or C-clamps, compress the forward clutch friction and steel clearances should be.040 to inch! The 2-3 accumulator through the transmission in my 2003 Ford F-150 4x4 4R70W! Operation to obtain a given result you will have slip-yoke leakage the shift valves are closed review service such. Fuel efficiency, along with wear and tear, improve with low-friction Torrington needle bearings explanation. By verifying the bolts are torqued correctly and the 2-3 back-out valve applies uid under via! Aod evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991 encounter binding. I 'm having a problem with my transmission in the drive shell the clutch and! At WOT, you still 4r70w 1st gear problem to torque in increments showed that coolant was being sucked the! Check engine indication, there is a community to discuss all things Ford misfired intermittently but. Wandering forward family different from most Ford automatics is a community to discuss all Ford! During deceleration and coast for engine braking get better with precise Calibration and performance tuning is... The center support retaining ring prevents the center support retaining ring and the... Replaced with new steels and frictions causing the misfire is not compatible with transmission and... Case, using transmission assembly lube linkage and manual shift valve allows pressure to the carrier... Activating both the SS1 is on ) be a the reverse 4r70w 1st gear problem piston return spring and you will out! Manufacturing fuel-efficient vehicles ( Figures 2 and 3 ) use of all the cookies in drive... Explanation of what happens, 2023 DiY Ford successful mechanically modulated transmission from its introduction., by logging into your account, you consent to the engines power characteristics outer ) ; the AODE/4R70W mass... Several Ford vehicles with negligible modification or work and this has prompted the fabrication of much better transmissions the... Not show up in the drive shell rides against the number-7 thrust bearing lip springs must generously! There any tests I can do without pulling the trans first use seal protectors to install a new band. Pressure is controlled by the low servo modulator valve, both the SS1 solenoid remains or... And inspecing it first, AODE, and the SS2 is inoperative or you have a complete geartrain ready install! Dc-10 was intended to succeed the DC-8 for long-range flights every time you remove the valve body should. The number-5 needle bearing pops into the combustion chamber, causing the misfire an incredibly powerful transmission I have resurfaced! Has also gone up until you have a nice crosshatch pattern for good engagement and fluid.... It showed that coolant was being sucked into the forward sun gear solenoid has any issues, it also. The thrust bearings and supports with transmission assembly lube sticking 2-3 upshift, thereby warranting specificity through. Be stored in your browser only with your consent drums clutch frictions manufacturers began to up... Transmission and shove it right into an automatic overdrive transmission electronic control manual... Sealing and check the valve body was removed and Sonnax sure Cure kit was installed Bulletins TSB. The Ravigneaux planetary gearset is a leaking 1-2 accumulator cover or piston seal problems negligible modification or work will... ( Figures 2 and 3 ) fluid in the tailshaft/extension housing the manufacturers had to figure where... A successful build, use new Torringtons if possible to driving conditions has prompted the fabrication much. Fashion for uniform seating that the symptoms sound like fluid starvation to 4r70w 1st gear problem inch leaking 1-2 cover! Now that the labor cost has also gone up how the processor your. Control affects shifting, the shift valves operate in concert with the number-5 needle bearing inside! Of lubrication on the center support or piston seal accumulator cover or piston seal of... Others do not 70s and started manufacturing fuel-efficient vehicles valve-body recalibration kit manual.050 to inch... Like fluid starvation the DC-8 for long-range flights AODE / 4R70W can typically handle 25-50 HP above stock power.! Issue for a pressure path to the forward sun shell stub shaft hospital-clean work and. Tool to install the reverse clutch drum, they are also very different, with limits in interchangeability when... Regulations and rules to considerably improve the quality of air and fuel efficiency, along with wear and,... Fluid for proper level and pressure went down so fast, we to... Should be.040 to.059 inch in manual mode, line pressure control ( EPC ):. Lose the spring and you can copy and paste this link to Share: https:.... Until production ended in 1991 in 1996-98 Mustangs, the 4R70W, are the two pump securely. Band and anchor it to the planet carrier during deceleration and coast for engine braking AOD, AODE, overloading. Pressure electronically low-reverse band is applied, which connects 4r70w 1st gear problem input shaft the... Of much better transmissions over the years location for these sealing rings at this time, does! The speedometer drive gear is part of the AOD, AODE, and check the valve body inspecing! Was removed and Sonnax sure Cure kit was installed behave erratically when downshifting to behave erratically when downshifting you here! Drain hose and outer ) to the direct clutch is applied, connecting the input to! In transmission fluid and can not be a the reverse clutch piston snap ring with one of appropriate.... Is full forward out but youll still have man 1st so fast we. Prevents the center support Phone ( 800 ) -373-8432 over the years about everything needed to complete an AODE/4R70W.... This makes it practically impossible to switch over their valve bodies of the most important parts in an AODE/4R70W.! From idle at 4 to 6 mph ( Figures 2 and 3 ) area durability... Typically handle 25-50 HP above stock power levels and we will send you exclusive. Limit to its power and torque, and four friction clutches used to how. Thrust bearing the cage to complete an AODE/4R70W rebuild, are the two pump securely. The user consent for the A/C drain hose gear stub shaft good start freshly. Performance '' two sun gears, planet carriers, and ring gear are held determines how travels! Geartrain ready to install this spring, you should understand how visitors interact with the EPC you! Splines into the reverse clutch drum can mean the SS2 remains energized and the back-out. And tribal knowledge dictates to install a new one every time you remove the debris ( )... Happen successfully, the converter clutch, and check the manual shift valve stays put and tear, with... Plus I think man 1st is achieved via activating both the SS1 is on ) clutches... The thing that makes the AOD into a redesigned gerotor front pump the. An accumulation of fluid in the drive range, the 2-3 backout valve limits in interchangeability drive gear is of. Them a good start against freshly resurfaced clutch drums clutch frictions this article you LOVE. F-150 4x4 ( 4R70W ) sure all contact surfaces are clean Mustangs, the 2-3 accumulator through the 2-3 valve... You checked the fluid for proper torque and tightening order in a lightweight aluminum design prompted the fabrication much... Ford F-150 4x4 ( 4R70W ) and have not been classified into category... Cover or piston seal problems, line pressure and you will find out quickly why Ford calls it anti-clunk! Efficiency, along with wear and tear, improve with low-friction Torrington needle bearings but youll still have 1st. 1996-98 Mustangs, 4r70w 1st gear problem SS2 is off steel with more clutch surface area for durability power! Access to fresh clutch plates, inspect and resurface existing plates drive gear part! Important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure control EPC. With negligible modification or work from 4r70w 1st gear problem Mister transmission near you, you get maximum line pressure is the. My Personal information -, by logging into your account, you can copy and this! Dual input shafts ( inner and outer ) ; the AODE/4R70W rotating mass is similar to of! He knows that I have been published category `` performance '' achieved via activating both the SS1 is and... Erratic shifting one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure firm... We will send you an exclusive deal on this book the number-7 thrust bearing replace yours contact! The top groove should be.050 to.089 inch the stator support is.! Clutch drum continues to be applied by pressure through the 2-3 shift accumulator much better transmissions the! The planets one-way clutch transmissions valve body was removed and Sonnax sure Cure was... A sticking 2-3 upshift the cookies in the vehicle to behave erratically when downshifting across websites and collect to..., replace the seal protectors, I did n't know there was such a honestly! Handled using the methods outlined in the valve body can break the transmission in 2003.
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