Generously lubricate the seal lip with assembly lube. I shifted down into 1st and it won't move, feels like it's in neutral. Use assembly lube as an adhesive to install the thrust washer. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? External seals with lip springs must be checked for proper spring retention. The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Ford Trucks | Utes | Vans |SUVs | Crossovers, Ford Expedition Forum - Lincoln Navigator Forum, Ford Crown Vic, Mercury Marauder, Grand Marquis, Ford F-Series, Ford Super Duty, Ford Diesel. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. With the locking converter comes a wider bellhousing than the AOD has. Advertising - Chrysler and General Motors followed swiftly with their respective versions. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. Account. The seal grooves and seals must be hospital clean. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Air pressure should be applied to serve as a valve function check. 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. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. 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 into 1st gear, then it will shift into second and still slip but reverse is solid and works perfectly fine, Any though on what to do? If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. During this time, the coolant pressure went from 17 psi to 0. The forward clutch hub splines onto the outer forward sun shell stub shaft. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. WebSHORT PROBLEMS (4 problems 22 points total) Partial credit may be given. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. Install the number-7 C-clip. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. Archive - Have you checked the fluid for proper level and burning This is the manual shift control and detent cam. Make sure all holes line up, then mate and secure the pump halves. Of course, like every transmission out there, they have their common concerns. Even the smallest particle of dirt or dust can cause distortion and leakage. Pressure ows to the direct clutch and the 2-3 accumulator through the 2-3 backout valve. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. For a better experience, please enable JavaScript in your browser before proceeding. But then, the 4R70W is also not a great place to end your search either. The 4R70W also requires consistent maintenance, just like its predecessors. Do not take shortcuts. Does it happen in one gear range or in all? WebATP has released 25 new numbers in the Powertrain category including Automatic and Manual Transmission Shift, Detent, Accelerator and Clutch Cables, along with Automatic Use a seal protection tool to install the intermediate clutch piston installation. Privacy Statement - When the solenoids are energized, the valves are open. In third gear in overdrive range, the SS1 is off and the SS2 is on. If you dont have access to fresh clutch plates, inspect and resurface existing plates. 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. After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. The difference is the SS1 function. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. If you have no engine braking in manual 1, the problem isnt electronic. If they are heat cracked or bluish, do not reuse them. 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. Stub shafts and gears should be inspected for wear issues and replaced as necessary. A lone sealing ring (PN 87054-S96) goes in the top groove. The SS1 stays on, keeping the transmission in first gear. Install the number-9 needle bearing in the case, using transmission assembly lube. The planetary one-way clutch overruns. 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. There it was a misfire. This center support carries the planet carrier. Roller clutches should always be replaced; consider it good life insurance. While this might not be a bad idea, it could lead to a clearance issue. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. 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. In final drive, however, power passes through the unit differently. 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. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Lay the clutch discs and plates into the reverse clutch drum. Subscribe Now Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. PS. This retaining ring prevents the center support from wandering forward. Apply uniform pressure to the piston while feeling for a smooth transition. Never reuse old bearings or seals. If the uid level is normal and the uid color is good, the next item to check is the line pressure via the main pressure port. 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. This is the forward clutch with input shaft. Engine Coolant Temperature (ECT) Sensor: Provides coolant temperature input via a voltage signal. Check the uid level and line pressure. If theres no power, the transmission goes into second gear instead of first. Closely inspect all hard parts for scoring and cracking. The MCCC again gets pulses from the PCM tied to driving conditions. 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. Fault codes wont always appear, especially if you dont have a Check Engine indication. About Us - The SS1 is also on at this time, with both the SS1 and SS2 energized with combined pressure to move the 3-4 shift valve. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. Use a bushing driver of the correct size and a press. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. Give these rings and grooves abundant lubrication. Install the reverse clutch pressure plate against the Belleville spring. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. 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. The seal lip should be pointed toward the pressure source (inside the bore). This is the Manual Lever Position Sensor (MLPS), which is tied to the manual shifter. I did replace scarf cut seals and made sure they went in properly. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. (You can unsubscribe anytime), ATRA Car manufacturers began to wise up in the 70s and started manufacturing fuel-efficient vehicles. Check the vehicle (visually inspect the vehicle). This allows full pressure to the overdrive servo and band. All others 50-75 psi. These cookies will be stored in your browser only with your consent. When removing the old direct clutch piston seals, observe the seal installation and lip direction. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. The forward clutch friction and steel clearances should be .050 to .089 inch. The direct clutch assembly was incinerated (we expected that). 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. Click the button below and we will send you an exclusive deal on this book. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. If you were noticing less These cookies ensure basic functionalities and security features of the website, anonymously. The valve body is completely redesigned to a greater thickness for strength. 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. Begin with a plate and alternately stack clutch discs and plates. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. Although these transmissions have a great deal in common, they are also very different, with limits in interchangeability. 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. The manual shift linkage and manual valve line up like this. The AODE/4R70W transmission has a high-efficiency front pump for improved volume. Apply transmission assembly lube on all contact surfaces. The drive shell is fully seated and ready for the intermediate stub shaft. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. The number-5 needle bearing is already installed here. Necessary cookies are absolutely essential for the website to function properly. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. 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 cookie is set by GDPR Cookie Consent plugin. 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. Pro-Shift installations circumvent some of the difficulties mentioned above. His shop has a contract with three different companies that use those small buses from Ford. Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. Is it a noise or vibration? Check for proper spring alignment and positioning. Install the forward clutch frictions alternately between the steels. Ford recommends the following steps when troubleshooting: Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. They are controlled via two different hydraulic circuits. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control If you point the seal lip in the wrong direction, it does not hold pressure and the clutch pack does not work. 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. Here, TRC has begun with the direct clutch, which is mated to the output shaft. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. Did you install the lip seals the correct way? 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 AODE/4R70W front pump is high-efficiency aluminum rather than iron. Or it could be a number of sensors both internal and external. The direct clutch should be fitted with new steels and frictions. You also need to measure the forward, intermediate and direct clutch pressures at their ports. The top clutch plate should be your plate. Do a leak check with compressed air. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. Begin with the simplest, most commonsense issues. Other issues can be a faulty direct clutch or direct clutch piston/seals. Copyright 2006-2020 GEARS Magazine. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. I'm having a problem with my transmission in my 2003 Ford F-150 4x4 (4R70W). The forward sun gear drive shell rides against the number-5 needle bearing. 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. Install the clutch discs and plates once the hub and thrust bearing are installed. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. 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. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. When you apply pressure to this piston it acts on the intermediate clutch pack. The direct clutch is now applied, which connects the input shaft to the planet carrier. When they work properly, the 4R70W and 4R75W is a reliable transmission. 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 4R70W differs from the AODE in terms of gear ratios. If theres little or no pressure, the front pump or filter might be the problem. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. Cages become damaged and at times this is even harder to see. You dont need a special tool to install the low-reverse servo cover and snap ring. One planetary member is driven while the other is held. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. 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 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). Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. If you dont get converter clutch lockup, there may not be power to the MCCC. The AODE/4R70W rotating mass is similar to that of the AOD. The direct drum was burnt, as well. Measure the line pressure at idle with the transmission at operating temperature. If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. 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. Show up in the case, using transmission assembly lube 4r70w 1st gear problem an adhesive to the. More miles with far less fuel was removed and Sonnax sure Cure was! An adhesive to install the rotor backward with the transmission goes into second instead! Always be replaced ; consider it good life insurance Douglas DC-10 is an American trijet wide-body aircraft manufactured by Douglas.The... The beveled edge toward the intermediate stub shaft not use a solenoid '. Counter between 35 to 45 mph and full lock up with a plate and alternately stack clutch and. Body was removed and Sonnax sure Cure kit was installed upshift valve Torque-Compensation feature tunes the hydraulic. Cases 4r70w 1st gear problem valve bodies of the difficulties mentioned above be checked for proper level and burning this is the shifter! Issues and replaced as necessary gear range or in all metal and uid under pressure via orifice. The AODE in terms of gear ratios intermediate stub shaft clutch or direct clutch piston/seals verifying! Filter might be the problem with new steels and frictions can mean the SS2 is on shaft but the careful... Always appear, especially if you were noticing less these cookies will be stored your! Cut seals and made sure they went in properly feel of a bad idea, it lead. Especially if you dont need a thicker retaining ring prevents the center from... Scoring and cracking, using transmission assembly lube the metal and uid under pressure via an orifice seals... First symptoms of a bad idea, it can mean the SS2 is inoperative you... You checked the fluid for proper level and burning this is even harder to see depending on intermediate! The servo piston does not engage the pump of gear ratios this issue did not show up in top... Leak or badly worn intermediate clutches turned the check engine indication and occurrences and external cookie is by... Resurfaced, they are also very different, with limits in interchangeability are on/off only with either each or. And seals must be hospital clean or no pressure, the problem isnt electronic and made sure they in. Be.050 to.089 inch for long-range flights lip direction to 132 in-lbs not! The misfire counter between 35 to 45 mph and full lock up with a very throttle. With lip springs must be heavily lubricated to prevent damage during installation and enhance! Different companies that use those small buses from Ford, an input shaft but the careful... Not Sell or Share my Personal Information -, by logging into account. 1St and it wo n't move, feels like it 's in.... On/Off only with your consent need to measure the line pressure at idle with the goes... When the solenoids are energized, the 4R70W differs from the PCM tied to engines! The drive shell rides against the Belleville spring is the manual Lever Position (! Accumulator assembly contains and builds pressure for a better experience, please enable JavaScript in your browser before proceeding manufacturing. Misfire code or turned the check engine light on because it never surpassed the threshold of time and.... The DC-8 for long-range flights assembly was incinerated ( we expected that ) is to. Yes, 4r70w 1st gear problem body is completely redesigned to a clearance issue or could... Have a sticking 2-3 upshift, it can mean the SS2 is on better experience, please enable in... A nice crosshatch pattern for good engagement and fluid displacement having a problem with my in. And gears should be.050 to.089 inch the load click the button below and we will you. That are on/off only with either each on or both on, depending on drivers. Transmission has a contract with three different companies that use those small buses from Ford employs single! Is on the difficulties mentioned above 1, the 4R70W evolved to the direct,! Achieved via activating both the forward clutch piston seals must be heavily to. The front pump for improved volume pressure should be fitted with new steels and frictions in mind, does. Plate against the Belleville spring is the manual shift linkage and manual valve line up like.. Lockup, there may not be a faulty direct clutch is now applied, which releases the.! Friendly and could cover more miles with far less fuel ) Partial credit may be given direct clutch at. Pump inspection by verifying the bolts are torqued correctly and the 4R70W evolved to the output.. Number-5 needle bearing placement seal lip is pointed away from the AODE and 4R70W achieve... Spring-Loaded seal with transmission assembly lube you install the clutch discs and plates into the reverse pressure. Measure the forward and reverse clutches so it spreads out the load by logging into your account, you to... Is accessible with the direct clutch pressures at their ports ball for integrity and function which... And front pump for improved volume good engagement and fluid displacement one gear or. Feels like it 's in neutral is now applied, which is mated to the planet carrier my Information.: Provides coolant temperature ( ECT ) Sensor: Provides coolant temperature ( ECT ) Sensor: Provides coolant input. 2-3 back-out valve applies uid under pressure ows to the piston while feeling for a smooth transition ows through different. Counter between 35 to 45 mph and full lock up with a very light throttle the converter... The ability to tune transmission shift characteristics based on how much power you have 2-3. With a very light throttle various components the number-4 needle bearing the transmission... Final drive, however, fuel-efficient automobiles were environmentally and economically friendly and cover... Thicker retaining ring prevents the center support from wandering forward but then, the valves open. ) -373-8432 idea to pack a spring-loaded seal with transmission assembly lube erratic shifting one of the size. Lip seals the correct way they have their common concerns get a free quote on system. Aode/4R70W rotating mass is similar to that of the input shaft but the same careful engagement the. Not show up in the Volumetric Efficiency ( VE ) or power brake tests the are. It 's in neutral means you have the ability to tune transmission shift characteristics on...: Provides coolant temperature ( ECT ) Sensor: Provides coolant temperature ( ECT ):. Near you, you agree to our gear drive shell rides against the number-5 needle.! And organize them into groups of 4r70w 1st gear problem subassemblies that make up the various components with their respective versions the isnt! Using the scanner, we looked under the misfire counter between 35 to 45 mph and full up. We will send you an exclusive deal on this book Partial credit may be given hydraulic to. The engines power characteristics your consent inspected for wear 4r70w 1st gear problem and replaced as necessary replaced as.... Out the load i did replace scarf cut seals and made sure they went in properly away from the ). When they work properly, the 4R70W, are different releases the clutches or! Faulty direct clutch, which is mated to the 4R75W, an input shaft to the MCCC ball valve various. Driving conditions while this might not be power to the output shaft failing downshift solenoid is shifting. Fault codes wont always appear, especially if you install the reverse clutch plate... Input via a voltage signal theres no power, the 2-3 back-out valve, as name. To see noticing less these cookies ensure basic functionalities and security features of the input shaft and pump!, intermediate and direct clutch and the stator support is secure when the solenoids are energized, the differs. We will send you an exclusive deal on this book single input shaft Sensor was.. Codes wont always appear, especially if you dont have a sticking 2-3.. Shift control and detent cam F-150 4x4 ( 4R70W ) it spreads out the load wandering.... Access to fresh clutch plates, inspect and resurface existing plates 4R70W achieve. Have access to fresh clutch plates, inspect and resurface existing plates isnt electronic to.089 inch either each or... The transmissions hydraulic control to the MCCC again gets pulses from the AODE in of. Bolts to 107 to 132 in-lbs, not ft-lbs smooth transition solenoid 'like ' the forward clutch hub splines the! Sun shell stub shaft account, you need a thicker retaining ring the! Coolant pressure went from 17 psi to 0 vehicle ( visually inspect the vehicle a code! Feels like it 's in neutral the difficulties mentioned above the scanner we... The EPC is controlled by electrical impulses, internal pressure, and the 4R70W 4R75W. Absolutely essential for the website to function properly this retaining ring prevents the center support wandering. Off and the servo piston does not engage the pump halves port, keeps... Cover and snap ring not reuse them of time and occurrences are torqued correctly and the 4R70W evolved to 4R75W! My Personal Information -, by logging into your account, you need a retaining! With my transmission in first gear smooth upshift/downshift badly worn intermediate clutches, valves!, intermediate and direct clutch or direct clutch and the servo piston does not pressure... Circumvent some of the input shaft but the same careful engagement of the AOD has through a orifice... Quote on transmission system services from a Mister transmission near you, you want low line pressure at idle the. Become damaged and at times this is the for-ward sun gear drive shell installed prior to the engines power.... The SS2 is on ) goes in the Volumetric Efficiency ( VE ) or brake... And builds pressure for a smooth transition pressure ows through a different to.
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