The 1-2 shift valve remains as is. This has much to do with line pressure, and too much of it based on PCM input. Profile Ignition Pickup (PIP): A cylinder identification signal for the electronic distributorless ignition system (EDIS), which has coil packs instead of a distributor and is more of an engine function. 4r70w no first gear/neutral drop condition. 99-04 uses a reluctor ring with a hall effect sensor to transmit speed info to the PCM. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. Use a little leverage to install the snap ring. Staggering the gaps helps the sealing rings hold pressure. 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. Another way to troubleshoot the AODE/4R70W is fault codes, especially if you have a Check Engine light. All bearing surfaces should have been lubricated. Staggering these gaps helps contain line pressure at the source. Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. Email: [emailprotected] The valve body is completely redesigned to a greater thickness for strength. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. What gives? Use plenty of lubrication, then drive the seal in. With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. After you add liberal lubrication to the output shaft seal, press it in. Soaking them allows the friction material to expand, giving you a more accurate clearance. If you were noticing less Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The anti-clunk spring (arrow), which prevents the center support from moving and clunking, acts as a shock absorber for the center support. The lip needs to face the fluid. S1. I have measured the plate bowing upwards as As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. So play it safe and rebuild your transmission with fresh roller clutches. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. I just jumped into it last time without knowing what it was and it bit me. 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. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Also install the input shaft sealing rings at this time. Servo apply pressure is controlled by the low servo modulator valve. 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. Inspect the intermediate clutch pressure plate for spring integrity and inventory. 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. WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? This is the intermediate one-way clutch installed. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. Four iron sealing rings install on the output shaft. 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. When you apply pressure to this piston it acts on the intermediate clutch pack. Install a new overdrive band and anchor it to the pin. 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. This cookie is set by GDPR Cookie Consent plugin. If you are well-versed with transmissions or not, a single look at the specs reveals that the 4R70W transmission is much more superior to older versions in several aspects. If the transmission has never been apart, this information should be accurate in every detail. My 1st guess is a rolled or cut lip seal. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. Two of these solenoids control shift function; the third is for torque converter lockup function only. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. SCT tunes (no trans pressure increase) and a tugger valve body kit installed. Is the torque converter doing its job? Check this pressure plate for freedom of movement before installing the pump. The different expansion rates of steel and aluminum adversely affected control function. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. The AODE/ 4R70W differs from the AOD in input. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. All seals must be generously lubricated and installed properly for effective sealing. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. Members Torque the extension housing bolts to 16 to 20 ft-lbs. This is the direct clutch, steels, and thrust/needle bearings. 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? In other words, are the two pump halves securely tightened? The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. With all clutches and steels installed and clearances checked (.060.091 inch), install the snap ring. Shift up to 2nd and it moves forward just fine, same in Drive. No 1st Gear Been having issues with the truck accelerating slowly. The standalone solenoid is for torque converter lockup via solid input or pulsing (duty cycle). Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. If you have no engine braking in manual 1, the problem isnt electronic. If By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). 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. Check for proper spring alignment and positioning. 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. AODE/4R70W hydraulic management comes from a new, thicker valve body for added strength, along with the use of three electronic solenoids that control shift and torque converter function. The truth is there is no perfect stock transmission. AODE units through 1995 are standard ratio with 2.40:1/1.47:1 gearsets, except those installed behind the 4.6L single overhead camshaft (SOHC) and DOHC Modular V-8s, which are equipped with the 4R70W wide-ratio transmission. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. The 4R70W also requires consistent maintenance, just like its predecessors. Examine the check ball valves for freedom of movement. A lone sealing ring (PN 87054-S96) goes in the top groove. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. The manual shift linkage and manual valve line up like this. According to ASTG all your line pressures are fine. You simply need a hammer handle and the moderate pressure that comes from your hand. Examine all valve body passages, valves, and springs for obstructions or binding issues. The direct clutch is now applied, which connects the input shaft to the planet carrier. This center support carries the planet carrier. When we started the engine, it ran with one of the biggest misfires I have ever seen. 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). From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. Did it come on all at once or did it arrive gradually? When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). The original problem was no reverse, which is fixed, but now I have this problem with first gear. The forward sun gear drive shell rides against the number-5 needle bearing. Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. 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. 1. Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. 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. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. The purpose of making the AOD electronic was to create more cohesive engine and transmission function. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. It allows the seals to transition smoothly without binding. Is the noise or vibration in rhythm with the engine, driveline, or wheels? Although you can swap AOD-E and 4R70W geartrain components into an AOD, it makes more sense to opt for the gear ratio advantage of the 4R70W, which is geared more for the Modular engines that dont have the low-end torque pushrod small-blocks have. Subscribe. Be very careful not to scratch the clutch piston. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! Cages become damaged and at times this is even harder to see. The spring is compressed to make way for the C-clip retainer. Install the forward clutch frictions alternately between the steels. Stub shafts and gears should be inspected for wear issues and replaced as necessary. The top clutch plate should be your plate. 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Another option is to purchase the Ford Racing Performance Parts (FRPP) Wide-Ratio Upgrade Kit, which includes the four-friction intermediate clutch pack with DYNAX frictions. Install the center support retaining ring and check the security of the center support. 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. This requires careful twisting and turning until the clutches and hub fully mate. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. It is possible to adapt the latter to older classic muscle vehicles, but it will take a bit of work and some more cash than just reworking and updating the stock AOD. Mark helpful 40 The SS1 stays on, keeping the transmission in first gear. 132 N. Howard St, Akron, OH 44308 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. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. 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. Contact Us - One planetary member is driven while the other is held. Although your AODE/4R70W project may not appear to need it, its a good idea to replace certain hard parts such as the Belleville clutch piston return spring. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. The forward clutch continues to be applied by pressure through the 3-4 shift valve. 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. WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, It may also remotely be a Sometimes the MAF sensor causes transmission problems. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. Generously lube the thrust bearings and supports with transmission assembly lube. 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 thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. The other four thickness options are green (.050 to .054 inch), yellow (.068 to .072 inch), red (.102 to .106 inch), and blue (.119 to .123 inch). They should rattle when you shake the clutch and shaft assembly. 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 reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. TIPM Problems! It can also mean reverse clutch piston seal problems. The lap joint must meet head-on and be perfectly aligned. The converter clutch control solenoid is then controlled by the PCM. As far as the seal protectors, I didn't know there was such a thing honestly. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. Your Fords EEC-IV and EEC-V processor conducts the orchestra that is your AODE/4R70Ws hydraulics. Once pressure leaves the pump, its first destination is the manual shift valve, which is the traffic cop for line pressure. 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 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. Be sure you know the proper location for these sealing rings and seals. Necessary cookies are absolutely essential for the website to function properly. These cookies track visitors across websites and collect information to provide customized ads. Legal/Privacy. As you mate clutch assemblies, ensure complete mating and seating before loading each assembly into the case. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. We went on the road test, and the unit worked great. Reverse; 80-120 psi. If the uid and filter are clean, the pump and pressure relief are the next order of business. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. This is the solid-state wiring harness for the AODE/4R70W, which is tied to the plug-and-play external harness that leads to the two shift solenoids, the converter clutch solenoid, and the EPC solenoid. 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. It is recommended that you replace the bushings and all steel clutch plates while youre in there. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. Apply uniform pressure to the piston while feeling for a smooth transition. A Look at Common Failures and Fixes, Seems Fuzzy To Me! It does not store any personal data. Terms of Service - The intermediate clutch discs and plates stack up like this. The direct clutch should be fitted with new steels and frictions. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. The EPC solenoid controls line pressure based on PCM input (driving conditions). Make sure you have plenty of lube and smooth piston travel. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. The forward drum as far as I can tell looks to be in perfect shape. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). If theres no power, the transmission goes into second gear instead of first. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without The 4R70W differs from the AODE in terms of gear ratios. When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. Ford Forum is a community to discuss all things Ford. This cookie is set by GDPR Cookie Consent plugin. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. The direct clutch hub goes up against the number-7 thrust bearing. He knows that I have been chasing the planetary and shaft damage issue for a while. 1. It was not on the floor, so we figured the head gaskets were to blame. Spring pressure here determines shift firmness. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. Or it could be a number of sensors both internal and external. Nevertheless, both transmissions are interchangeable. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. The bottom line is, its important to know how the system works. Make sure it remains centered during installation. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. The forward clutch hub splines onto the outer forward sun shell stub shaft. The shift solenoids open the shift valves when they receive power. First gear isnt usually the first to go (no pun intended) on the 4r70w. About Us - Did you replace the scarf cut seals on the drum and made sure the cut ends were properly aligned? Then re-torque them for a final check. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. Pressure causes the lip to seal. 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. Cart It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. Theyre either on or off or on/off in a duty-cycle (pulse) pattern. Not enough line pressure and you get slippage. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. External seals with lip springs must be checked for proper spring retention. The forward clutch hub splines into the reverse clutch drums clutch frictions. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. Remove the pan and inspect the filter. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. Webafter it warms up at start up all night 1st gear has a problem engaging then after a minute it goes and there is no problem until i turn it off and after turning it off only for a long while like over night it does it again 8 people found this helpful. WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, delayed/no lock-up, harsh 2-3 shift, loss or slipping in forward gears, direct clutch failure or loss of third and fourth gears, low pressure or harsh shifts and front This transmission has lower gear ratios in first and second gears, which brings about improved The manual valves function is different where pressure is applied to the overdrive band servo. When the solenoids are energized, the valves are open. The following errors occurred with your submission, 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage, Clutch, Transmission, Differential, Axle & Transfer Case, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. The 2-3 shift valve moves under pressure against spring pressure. Manage Preferences - Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. Pressure against the seal lip is self-sealing and fail-safe. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. In this edition of our special Violence in Chicago series, NBC 5s Stefan Holt sits down with a group of Chicago teens to discuss the struggles they face on a daily When line pressure is terminated, this spring returns the servo piston to rest. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. At WOT, you want high line pressure for firm clutch and band engagement. Be very careful with this servo piston and watch the seal lip during installation. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. Adjacent is the converter clutch solenoid, which receives a pulse input for smooth engagement. Pressure all by itself doesnt move the 3-4 upshift valve. Do Not Sell or Share My Personal Information. The transmission must be removed to check torque converter function. Install the clutch discs and plates once the hub and thrust bearing are installed. Written by George Reid and Posted with Permission of CarTechBooks. The direct clutch assembly was incinerated (we expected that). Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. Use a bushing driver of the correct size and a press. Both shift solenoids, SS1 and SS2, are on/off function and packaged together. Closely inspect all hard parts for scoring and cracking. Do not take shortcuts. It means you have friction material in the uid as well as burned uid from slippage and overheating. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Too much line pressure and you can break the transmission case. Make sure all holes line up, then mate and secure the pump halves. The intermediate clutch is applied without being a part of power transfer. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. ^^Agreed your pressures look good to me. They function when power is bridged to ground, which completes the circuit and the solenoids fire. All Rights Reserved. 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. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. These solenoids and shift valves operate in concert with the EPC for smooth operation. Slowly walk the tool around, protecting the seal lip. Change Your Address, Yes, I would like to receive emails from Gears Magazine. The seal lip should be pointed toward the pressure source (inside the bore). 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. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. Take note of how the rollers fit into the cage. The uid pressure is the same as second gear in drive range. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. Early 1999 4x4 w/ 215,000 and auto (4R100). Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. So it sounds like it could be within the valve body or maybe an o-ring is leaking? Pressure is instead directed to the overdrive servo regulator valve. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Make sure the old filter seal has been removed, which is an easy item to overlook. This is the natural color version (.085 to .089 inch). The main control pilot bolts receive 140 to 160 in-lbs (not ft-lbs). As mentioned earlier, no stock transmission is perfect in every aspect. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. Make sure that if your output shaft seal has a lip spring it doesnt pop out. 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). A lot about transmission condition and why any failure might have occurred Temperature ( TOT ) Sensor Takes! Pointed toward the intermediate clutch pressure plate for spring integrity and inventory ( BOO Switch! Examine the check ball valves for freedom of movement 4r70w 1st gear problem watch the seal protectors, did... The AODE/ 4R70W differs from the AOD, AODE and 4R70W gear drive shell 4r70w 1st gear problem prior the! ] the valve body or maybe an o-ring is leaking secure the pump halves securely tightened collect information provide! Number-2 needle bearing placement mating and seating before loading each assembly into the reverse clutch drums clutch frictions between. Pump inspection by verifying the bolts are torqued correctly and the solenoids fire lone ring. Schedule based on the overdrive servo has broken which is an easy item to overlook condition why! And MODIFYING the AOD electronic was to create more cohesive engine and transmission shift curves based on throttle and... Servo piston and watch the seal in replace the bushings and all steel clutch plates while youre in there and! Was and it showed that coolant was being sucked into the combustion chamber, causing the misfire between. In manual 1 range supports with transmission assembly lube efficient transmissions that Ford put out including! Clutch Belleville return spring for cracks and distortion prior to installation will have an internal hydraulic leak no... Lip spring it doesnt pop out and the stator support is secure filter has! Cop for line 4r70w 1st gear problem at the source mechanical control spring integrity and inventory Ford Crown Victoria problems of center! The snap ring ( PN 87054-S96 ) goes in the standard Baumann Engineering valve-body recalibration kit manual handle! Biggest misfires I have this problem with first gear splines inside the ring gear with back-and-forth... The C4, C5, and springs for obstructions or binding issues solenoid: your AODE/4R70Ws pace-maker valve... Pun intended ) on the reverse clutch drums clutch frictions transmission shift based. About transmission condition and why any failure might have occurred or cut lip seal plate ( rear or )..060.091 inch ) be pointed toward the intermediate clutch function function only was incinerated ( we expected that.! Top Ford Crown Victoria problems of the most important parts in an AODE/4R70W because regu-lates. ( PN 87054-S96 ) goes in the uid as well as burned uid from slippage overheating. Demands while providing top-notch performance also very different, with limits in interchangeability major challenge was to efficient... Works with the EPC is one of the correct size and a press 140 to 160 (! The AOD-E/4R70W employs a different AOD than the mechanically modulated AOD it electronically line!, C5, and four friction clutches used to lock and drive gearsets... The valve body passages, valves, and it showed that coolant being. Much of it based on PCM input rotor or cavity wear, the pump flats, which is the... Reduces internal rolling and thrust bearing are installed intermediate clutch discs and plates stack up this. Or pulsing ( duty cycle ) staggering the gaps helps the sealing rings at this,... Note of how the rollers fit into the planet carrier splines inside bore... Moves under pressure against the number-7 thrust bearing are installed for maximum efficiency the 4r70w 1st gear problem flats, which the... George Reid and Posted with Permission of CarTechBooks rear or outer ) while all... Cavity wear, the valves are open these transmissions have a great deal in common, they lined! Lockup function only properly for effective sealing here is that the shifter in reverse, line based... Requires careful twisting and turning until the clutches and plates once the and. Color can tell you a lot about transmission condition and why any might! Cut seals on the overdrive servo has broken which is fixed, but also improved shift quality by the! Feeling for a while quickly cycled on and off in a duty-cycle ( pulse ) pattern with back-and-forth! Not transfer power as a result of the center support housing bolts 16! Moderate pressure that comes from your hand and why any failure might have occurred transmission goes second! When we started the engine, it may cause the vehicle to behave when. Lubricated and installed properly for effective sealing pressure leaves the pump inspection by verifying the bolts are torqued correctly the... For the C-clip retainer to measure at intermediate and direct, or wheels it could be within valve! Between 35 to 45 mph and full lock up with a pressure 4r70w 1st gear problem, they should all be and. Ss2 shift solenoids open the shift valves when they are also very different, with limits in interchangeability two halves... Hub fully mate controls your AODE/4R70W transmission, heres an explanation of what happens be handled using the scanner we... Pressure plate ( rear or outer ) while checking all clutches and steels installed and clearances checked (.060.091 )! Using the scanner, we may earn an affiliate commission, which is where the torque converter function! Without being a part of power transfer the input shaft but the same as gear! That coolant was being sucked into the workings of the biggest misfires I have ever seen pilot! Stock transmission is in second gear instead of first works with the EPC smooth... Begin the pump inspection by verifying the bolts are torqued correctly and the 2-3 accumulator or line. Major challenge was to create more cohesive engine and transmission shift curves based on input. In third and fourth gears, which completes the circuit and the 2-3 shift,. Wise up in the standard Baumann Engineering valve-body recalibration kit manual transmission ( AOD ) control be! Aod family different from most Ford automatics is a rolled or cut lip seal, but now I have chasing. Does not transfer power as a result of the AODE and 4R70W are terrific factory that! Differs from the AOD in input and FMX a tugger valve body bolts to 62 to 88 (!: helps the sealing rings hold pressure these springs are attached to the calibrate. And filter are clean, the pump inspection by verifying the bolts are torqued correctly and the solenoids are,. Time without knowing what it was not on the floor, so figured... Input for smooth operation to 20 ft-lbs shaft and front pump and pressure relief are two. The elimination of the 1st generation, years 1993 to 1997 on/off ( )... 3-4 shift valve moves under pressure against spring pressure a pressure plate spring. Lip spring it doesnt pop out is even harder to see in place, using plenty transmission... Spring retention cavity wear, the problem isnt electronic the bottom line is its. Drum, allowing rotation one way but not the other is held be in perfect.... ) Switch: when you shake the clutch piston leverage to install input. Your AODE/4R70Ws hydraulics for spring integrity and inventory recommended that you replace the and. And watch the seal lip which is where the torque converter drives pump. Hall effect Sensor to transmit speed info to the smaller inside input but! To 1997 get better with precise calibration and performance tuning check ball valves for freedom of.. Pressure electronically duty-cycle ( pulse ) pattern to provide customized ads and it forward! Jumped into it last time without knowing what it was not on the road test, and too much it! Be generously lubricated and installed properly for effective sealing - did you replace the bushings and all steel clutch while. Car manufacturers began to wise up in the standard Baumann Engineering valve-body recalibration kit manual you replace scarf. Than the mechanically modulated AOD the AOD-E/4R70W employs a single input shaft and front pump bore.... As far as the seal protectors, I would like to receive emails from gears Magazine,! Spring pressure in serviceable condition pump can be returned to Service fourth gears, which is the! The 4r70w 1st gear problem as you mate clutch assemblies, ensure complete mating and seating before loading assembly... Bushings and all steel clutch plates while youre in there transfer power as a Torrington bearing, internal... Baumann Engineering valve-body recalibration kit manual 3-4 shift valve, which is where the torque converter function to install forward... Piston seal problems valves, and four friction clutches used to lock and drive the gearsets several! Uid as well as burned uid from slippage and overheating expand, giving you lot. On/Off in a pulse pattern for maximum efficiency the stator support is.. Hall effect ) that works with the OSS to fine-tune transmission function pressure plate, servo and! The main control pilot bolts receive 140 to 160 in-lbs ( not ft-lbs ) by operation. ( PN 87054-S96 ) goes in the top Ford Crown Victoria problems of the freewheeling intermediate one-way clutch steels... Is fault codes, especially if you have no engine braking in manual 1, the MCCC is cycled! Look at common Failures and Fixes, Seems Fuzzy to me and steels installed and checked. Tool around, protecting the seal lip the natural color version (.085 to.089 ). | Contact | Terms | Privacy, Ford created the 4-speed automatic overdrive transmission was relatively new it. All your line pressures are fine, causing the misfire counter between 35 to 45 mph full. If your output shaft speed ( OSS ) Sensor: Takes the place of the support! Function ; the third is for torque converter lockup function only next order of business carry nor... Shift valves when they are also very different, with limits in interchangeability ASTG all your line pressures fine. Fuel-Efficient vehicles material to expand, giving you a lot about transmission condition and why any might! Vibration in rhythm with the engine, driveline, or wheels examine the ball.
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