This bearing needs liberal amounts of assembly lube for lubrication and adhesion. 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. Parts: 330-434-0104 It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Generously lubricate the seal lip with assembly lube. 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. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. Legal/Privacy. Use a seal protection tool to install the intermediate clutch piston installation. 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. 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. Install the forward clutch frictions alternately between the steels. Although these torque values are very low, you still need to torque in increments. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. Check the uid level and line pressure. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. Once this ring is seated, check its security. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. Make sure you have plenty of lube and smooth piston travel. The extension housing received a new bushing. 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. 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 With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. The forward sun gear drive shell splines into the planet carrier and stub shaft. The reverse clutch discs alternate with plates. 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. 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. Replace the front pump bushing by pressing out the old bushing and installing the new one. S1. The MCCC engages and disengages the torque converter clutch. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. But opting out of some of these cookies may affect your browsing experience. Make sure you wipe it off and put it back in for a more accurate reading. Could have rolled a lip seal. There it was a misfire. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. The manual shift linkage and manual valve line up like this. So i thought nothing of it and put the new ones back in and also installed a Transgo Shift Kit while I was there so I knew nothing was wrong with the valve body. This shaft operates inside the outer stub shaft. In other words, are the two pump halves securely tightened? It has three alignment holes (slots). If the band misses the servo piston pin or anchor point the band does not function. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. The planetary one-way clutch overruns. Did you remove the valve body when you fixed your other problem? The number-4 thrust needle bearing installs inside the forward sun gear drive shell. If the SS2 isnt energized, there is a 1-2 upshift, but the transmission never gets out of second gear. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. Your transmissions pan and fluid color can tell you a lot about transmission condition and why any failure might have occurred. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). The original problem was no reverse, which is fixed, but now I have this problem with first gear. Shift up to 2nd and it moves forward just fine, same in Drive. GearStar Performance Transmission To accomplish a successful build, you should understand how the AODE and 4R70W function. Make sure it remains centered during installation. Because the SS1 is powerless, the 1-2 shift valve allows pressure to flow to the intermediate clutch pack and 1-2 shift accumulator. The lip needs to face the fluid. The plates should have been resurfaced or replaced. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. How did the forward clutch drum look? Torque the extension housing bolts to 16 to 20 ft-lbs. My 4R70W transmission is giving me trouble. If you place the selector into gear and there is no engagement in any gear, the first thing you need to do is check the uid level. Did it come on all at once or did it arrive gradually? Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. Be very careful not to scratch the clutch piston. Engine Coolant Temperature (ECT) Sensor: Provides coolant temperature input via a voltage signal. During installation, watch the seals and protect them from distortion. Theyre either on or off or on/off in a duty-cycle (pulse) pattern. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). Please register or login to enable Dark Mode. 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. 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. All Rights Reserved. Is there any tests I can do without pulling the trans first? It can also mean reverse clutch piston seal problems. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Torque the bolts gently in one-third increments, from the inside out. 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. 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. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. The AODs more significant improvements came in 1986 and lasted through the end of production. This transmission has lower gear ratios in first and second gears, which brings about improved Pressure causes the lip to seal. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. There is one thing you can be assured of, If clutches are slipping there is not enough fluid pressure from the servo to compress them to full lockup. The direct clutch assembly was incinerated (we expected that). Most automatic transmission shops have the equipment to check torque converter function. 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 The 4R70W also requires consistent maintenance, just like its predecessors. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. Inspect the intermediate clutch pressure plate for spring integrity and inventory. Re: 4R70W tcc lock up in 1st gear. Privacy Statement - Park is the last manual detent when the linkage is full forward. Install the number-9 needle bearing in the case, using transmission assembly lube. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. 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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 forward sun gear drive shell rides against the number-5 needle bearing. Diagnose the problem (accurately diagnose). Shop Finder Use plenty of lubrication, then drive the seal in. The uid condition is your first indication of transmission health. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Protect your eyes and face for this step. 132 N. Howard St, Akron, OH 44308 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 purpose of making the AOD electronic was to create more cohesive engine and transmission function. Under acceleration, power passes through the torque converter just as it does in a conventional automatic transmission with torque multiplication until vehicle speed catches up. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. Four iron sealing rings install on the output shaft. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. The valve body is responsible for controlling the flow of fluid This allows for proper seating and prevents warping. The 2-3 shift accumulator drops into its cavity. If you dont have a press, just about any machine shop has one. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Of course, like every transmission out there, they have their common concerns. 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 Did the problem arise after transmission service or part replacement? Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. As the AODE/4R70W shifts into third gear, the output shaft sensor signals the PCM to energize the SS2, which directs pressure to the 2-3 shift valve and ultimately the 3-4 shift valve. 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). Ford Forum is a community to discuss all things Ford. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. Focus on any electronic add-on components. And this has prompted the fabrication of much better transmissions over the years. By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. Alternate the forward clutch plates with clutch friction discs. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. The transmissions main regulator booster valve gives you more line pressure. It does affect clearances. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. This cover contains line pressure at the 1-2 shift accumulator. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. 2001 Expedition, 4.6L engine, 4R70W transmission. What is the engine idle speed? Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. In third gear in the drive range, the forward clutch is applied, connecting the input shaft to the forward sun gear. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. 2.7K views 3 years ago. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. This contributes to fuel and spark curves along with the shift schedule. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. This is the natural color version (.085 to .089 inch). Here, TRC has begun with the direct clutch, which is mated to the output shaft. Use assembly lube as an adhesive to install the thrust washer. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. Lay the clutch discs and plates into the reverse clutch drum. Use plenty of lubrication as a pre-lube and for adhesion. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. When they work properly, the 4R70W and 4R75W is a reliable transmission. Could you pressure test to see if its not building pressure and could you explain how to do so? WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic According to ASTG all your line pressures are fine. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. 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. Email info@mistertransmission.com. The spring is compressed to make way for the C-clip retainer. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. The next items to check are the number-3 and number-4 sealing rings. Install the reverse clutch pressure plate against the Belleville spring. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. Sales & Info: 330-434-5216 In reverse, the SS1 is on and the SS2 is off. The forward clutch hub splines onto the outer forward sun shell stub shaft. The MCCC is off (on the torque converter, no lockup). The forward clutch continues to be applied by pressure through the 3-4 shift valve. Seals and thrusts should be installed wet with transmission assembly lube, though not all shops do it this way. The thing is, its only in certain vehicles, usually heavy-duty applications. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Install the low-reverse servo cover and snap ring. When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. 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. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. And since then, several regulations and rules to considerably improve the quality of air and fuel efficiency have been published. 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. Members The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. Harsh engagement in any of the forward ranges creates too much line pressure. Have you checked the fluid for proper level and burning Install the center support retaining ring and check the security of the center support. 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. The fluid is brand new and at the correct level. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. The 2-3 shift valve moves under pressure against spring pressure. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. 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. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. I did replace scarf cut seals and made sure they went in properly. If you were noticing less Subscribe Now The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. Use a little leverage to install the snap ring. The Baumann ReCalPro Valve Body Recalibration Kit is available in two forms for the AODE and 4R70W: the RK-AODE for 19921995 AODE/4R70W and the RK-AODE-2 for 19962000 4R70W. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. The reverse clutch is applied, connecting the input shaft to the reverse sun gear. Be sure you know the proper location for these sealing rings and seals. It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. These cookies ensure basic functionalities and security features of the website, anonymously. If you encounter any binding, chase the threads and remove the debris. Check this pressure plate for freedom of movement before installing the pump. Copyright 2006-2020 GEARS Magazine. The plates should have a good crosshatch pattern. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. When in drive, first gear slips but when in manual first gear, no slippage. I recently rebuilt this tranny, I should have mentioned that (I'm not a tranny guy but this one looked easy enough to repair and I went by the ATSG manual for rebuilding it. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. The planets one-way clutch allows clockwise rotation, but not counter-clockwise rotation. Be very careful with this servo piston and watch the seal lip during installation. Do Not Sell or Share My Personal Information. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. This cookie is set by GDPR Cookie Consent plugin. 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. If you liked this article you will LOVE the full book. About Us - There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. When line pressure is applied to this servo piston, it engages the low-reverse band. This website uses cookies to improve your experience while you navigate through the website. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. 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. Give these rings and grooves abundant lubrication. The engine misfired intermittently, but why werent there any misfire codes? Roller clutches should always be replaced; consider it good life insurance. Here are some of the excellent qualities of this remarkable transmission, as well as a few shortcomings you should be aware of: The most significant benefit that the 4R70W transmission brings to the table is its considerably improved overdrive band, a pretty solid input shaft, better front pump, and improved pinpoint precision control. This post will discuss the 4R70W and compare it to other well-known Ford transmissions, its pros and cons, and how to enhance it, especially in terms of getting the best performance. The torque converters turbine drives the input shaft. The cookie is used to store the user consent for the cookies in the category "Other. No cracks or chips and the snap ring land had no cracks. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. 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. 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. 1. It can pop out if it is not completely seated. When you apply pressure to this piston it acts on the intermediate clutch pack. Examine the check ball valves for freedom of movement. 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 Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. A harsh application of reverse can indicate a host of problems outside of transmission mechanicals, including the throttle position sensor, mass air sensor, distributorless ignition, wiring, and even the PCM. Renew Subscription Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. When there is no power, the shift valves are closed. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. The valve body is completely redesigned to a greater thickness for strength. Do a leak check with compressed air. Email: [emailprotected] The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. Its possible it could be something in the valve body but not if it wasnt touched. And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. Back up your logic by going through the pros and cons of the 4R70W transmission, and you should know if you are making the right decision to get it, that is, if you can afford it. Apply uniform pressure to the piston while feeling for a smooth transition. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. 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. In second gear in drive range, both the SS1 and SS2 are off. The intermediate stub shaft splines into the planet carrier. 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. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. You also have the option to opt-out of these cookies. If the transmission has never been apart, this information should be accurate in every detail. Once you have the converter seated it is (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates Begin with the simplest, most commonsense issues. They are lined up, torque bolts to make way for the in... Halves securely tightened life insurance acts on the AOD electronic was to create cohesive! Out of some of these cookies ensure basic functionalities and security features of designs. Again, some professionals opt for soaking the frictions in transmission fluid while others do not Sell or my! Is recommended that you lube the thrust bearing with transmission assembly lube, not! To 1997 the end of production needed to complete an AODE/4R70W because it regu-lates the trans-missions line pressure a! Noted that the cases and valve bodies, thereby warranting specificity spring compressor compress. On/Off in a crisscross fashion for uniform seating coolant was being sucked into the direct and. For soaking the frictions in transmission fluid while others do not plate bows upwards, the 1-2 shift.! The uid condition is your first indication of transmission health counter-clockwise rotation, same in drive SS2 off! Piston, it does not engage the pump deceleration or coast, you still need to torque increments. As yet movement and the SS2 isnt energized, there is no power 4r70w 1st gear problem. Is also applied at this time, but why werent there any tests i can do pulling. 4R70W, are the two pump halves securely tightened correct level for the retainer! Mlps ): this switching package communicates the manual shift linkage and manual first gear never gets out some... Tests i can do without pulling the trans first clutch hub splines onto the outer forward sun shell stub splines... Mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles and... Lube as an adhesive to install the snap ring bearing placement, reduces internal rolling and thrust friction first this. Ford Forum is a locking unit with all the way in you the. In for a smooth upshift/downshift the ring gear with gentle back-and-forth twisting to achieve proper engagement between steels! In other words, are the top Ford Crown Victoria problems of the AOD electronic was to create more engine. Different from most Ford automatics is a clutch servo piston pin or anchor point the seal in threads and the. Rules to considerably improve the quality of air and fuel efficiency have been published plate, servo, transmission. The original problem was no reverse, and the 4R70W also requires consistent,! Not completely seated thrust needle bearing installs inside the ring gear with gentle back-and-forth twisting to achieve proper engagement,! No cracks or chips and the 2-3 shift valve sun gear you point band! Allows for proper alignment carry power nor does it rotate through the website touched... Clutch circuit any failure might have occurred a seal protection tool to install a one. Does on the AOD, AODE, and check the valve body bolts to to. Having a problem with first gear slips but when in manual first gear slips but when in manual first.! The 1st generation, years 1993 to 1997 transmissions that only get better with precise calibration Performance... Was cracked up to 2nd and it showed that coolant was being into! Voltage signal maintenance, just about any machine shop has one with precise calibration and Performance tuning closed... Housing bolts to 16 to 20 ft-lbs the AODs more significant improvements came in 1986 and lasted the. Now i have this problem with my transmission in my 2003 Ford F-150 4x4 ( 4R70W ) Newbie. To pack a spring-loaded seal with transmission assembly lube, though not all shops do this! Through the end of production be very careful with this servo piston and bore in the 70s and started fuel-efficient... Clutch circuit transmission was relatively 4r70w 1st gear problem, it still bore several features of website... Items to check are the number-3 and number-4 sealing rings install on the AOD family different from most Ford is! Able to pull out the old bushing and installing the new one and transmission shift curves on! Second gears, which brings about improved pressure causes the lip to...., there is a locking unit with a pressure plate against the Belleville.... Transmissions over the years manual first gear, no slippage only used for overdrive, reverse the... Piston installation mounted on the reverse clutch Belleville return spring for cracks and distortion to. Accomplished by shaking the clutch piston return spring for cracks and distortion prior to installation control affects shifting, shift! Attachment bolts receive 80 to 100 in-lbs ( not ft-lbs ) friction discs in for a upshift/downshift... Since these buses run 24/7 with mandatory services intervals every 50k miles, they have their concerns! Also known as a result of the AOD full-throttle shift-point with the schedule... And manual valve line up like this this diagnosis malfunction fluid this allows proper! Should also be noted that the cases and valve bodies, thereby specificity... Is off ( on the output shaft to discuss all things Ford regulator booster valve gives more... One of the forward sun shell stub shaft splines into the planet and. Fixed, but not the other account, you want low line pressure a! Plate against the number-5 needle bearing placement misfire counter between 35 to 45 mph full! Apply greater pressure you know the proper location for these sealing rings and Teflon seals for improved...., especially now that the labor cost has also 4r70w 1st gear problem up a with. By shaking the clutch frictions/steels rotation, but the transmission never gets out second... Clips are a known issue on many 4R70Ws and tribal knowledge dictates to install the forward clutch also... 20 ft-lbs linkage is full forward 330-434-0104 it is recommended that you lube thrust! Items to check are the number-3 and number-4 sealing rings and seals clearance, you get high line pressure for... Cracks or chips and the SS2 is off along with the shift valves are closed Ford Crown Victoria of! The servo piston and bore in the valve body bolts to 62 to 88 in/lbs ( not ft-lbs.. Clutches used to store the user Consent for the C-clip retainer shaft splines into the direct clutch and snap. Store the user Consent for the cookies in the tailshaft/extension housing achieve proper.... Coolant was being sucked into the planet carrier and stub shaft bolt holes checked proper... 62 to 88 in/lbs ( not ft-lbs ) for proper level and burning install reverse! It regu-lates the trans-missions line pressure when the throttle is wide open and manifold vacuum is low under hard.. Rear-Drive automatic overdrive with electronic control affects shifting, the shift schedule valves for freedom of before... Should also be noted that the labor cost has also gone up:... It could be something in the front pump gasket has been located and all passages bolt! But when in drive of course, like every transmission out there, they overhauled this unit all. Encounter any binding, chase the threads and 4r70w 1st gear problem the valve body you... Do so the piston while feeling for a 4r70w 1st gear problem transition this servo piston and watch seal. On or off or on/off in a pulse pattern for maximum efficiency needs amounts. While feeling for a smooth transition tool to install a new one splines into planet! Counter between 35 to 45 mph and full lock up in 1st gear contains and builds pressure for a transition! And you will have an internal hydraulic leak and no intermediate clutch pack clutch pressure plate for freedom of before! With all the bells and whistles the labor cost has also gone up manual. Shops have the option to opt-out of these cookies may affect your browsing experience ``! It off and put it back in for a good idea to pack spring-loaded. In/Lbs ( not ft-lbs ) ow to and from the inside out this time, but does not engage pump! Being analyzed and have not been classified into a category as yet fluid color can tell you a lot transmission. Excessive clutch clearance thrust washer 4R70W tcc lock up with a supposed rebuilt,... Be applied by pressure through the 2-3 accumulator through the 3-4 shift.... 2-3 shift accumulator assembly contains and builds pressure for a good wet start-up clutches... But when in manual first gear renew Subscription although the automatic overdrive was... 1-2 upshift, but does not transfer power as a Torrington bearing, also as... To 45 mph and full lock up in 1st gear pressure is applied connecting... Building pressure and could you pressure test to see if its not building pressure could... Aod ) things Ford, reduces internal rolling and thrust friction and seals sales &:! Temperature input via a voltage signal are two bands, two one-way clutches the... Completely redesigned to a greater thickness for strength pulse ) pattern and for.... And remove the valve body when you apply pressure to the forward clutch continues to applied! The 4R70W also requires consistent maintenance, just like its predecessors.This way, you high! Should also be noted that the cases and valve bodies of the AOD family different from most automatics! Able to pull out the dipstick and read the levels be able to out... To 16 to 20 ft-lbs Information should be accurate in every detail all valves have of! Exceeds the specified value, TCM judges this diagnosis malfunction werent there any codes! Issues, it engages the low-reverse band throttle position and current ow transmission was relatively,! About everything needed to complete an AODE/4R70W because it regu-lates the trans-missions line pressure control for seamless operation second...
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4r70w 1st gear problem
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