The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. 2001 Expedition, 4.6L engine, 4R70W transmission. Gears Magazine The cookie is used to store the user consent for the cookies in the category "Analytics". As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. If you encounter any binding, chase the threads and remove the debris. Does it happen in one gear range or in all? The planetary one-way clutch stops the planet carrier from turning counterclockwise when power is applied under acceleration, yet it allows rotation in one direction during deceleration and coast. This installs exactly as you see here with a cover and C-clip. Also, keep an eye out for the A/C drain hose. It means you have friction material in the uid as well as burned uid from slippage and overheating. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. The cookie is used to store the user consent for the cookies in the category "Performance". Of course, like every transmission out there, they have their common concerns. This retaining ring prevents the center support from wandering forward. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. 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 Using a press and a seal driver, install the new front pump seal using a thin film of Permatex The Right Stuff around the seals outside perimeter and gently press into place. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. Account. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. Install the clutch discs and plates once the hub and thrust bearing are installed. 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. Most automatic transmission shops have the equipment to check torque converter function. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. 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. External seals with lip springs must be checked for proper spring retention. No cracks or chips and the snap ring land had no cracks. This is the manual shift control and detent cam. 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. 2.7K views 3 years ago. Pump assembly must be performed meticulously with clearances checked. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Other issues can be a faulty direct clutch or direct clutch piston/seals. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. Transmission Oil Temperature (TOT) Sensor: Helps the PCM calibrate the shift schedule based on the transmission sump temperature. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. It was It controls spark, fuel, and transmission shift curves based on throttle position and current ow. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. This shaft operates inside the outer stub shaft. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. Use plenty of lubrication, then drive the seal in. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. If you liked this article you will LOVE the full book. I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. 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 cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. Honda Accord Neutrals When It Comes To A Stop, Noises and Leakage: Cant Keep This Honda FIT On The Road. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. The MCCC is off. Install the direct clutch discs and plates alternately. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. When the AODE/4R70W shifts into second gear in drive, the for-ward clutch is applied, connecting the input shaft to the forward sun gear. 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. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. The 4R70W is far from perfect by all means and also has its advantages and disadvantages, just like its predecessors. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). When we started the engine, it ran with one of the biggest misfires I have ever seen. As power begins to reach the EPC, theres less line pressure and the sliding valve is moved by spring pressure. It helps determine line pressure based on vehicle speed much as the governor does on the AOD. Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. 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. When in drive, first gear slips but when in manual first gear, no slippage. Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime. The spring is compressed to make way for the C-clip retainer. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Take note of how the rollers fit into the cage. These cookies ensure basic functionalities and security features of the website, anonymously. WebFord 4R70W/4R75W Transmission Information. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. One planetary member is driven while the other is held. The transmissions main regulator booster valve gives you more line pressure. The planets one-way clutch overruns. The forward clutch continues to be applied by pressure through the 3-4 shift valve. The lip needs to face the fluid. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. This cookie is set by GDPR Cookie Consent plugin. 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 transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. 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. The manual valves function is different where pressure is applied to the overdrive band servo. Early 1999 4x4 w/ 215,000 and auto (4R100). The number-3 thrust needle bearing installs inside the forward clutch hub. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. Powertrain Expo If clutch and servo are an issue then internal work is needed. Did you remove the valve body when you fixed your other problem? Nevertheless, both transmissions are interchangeable. Stagger the gaps and give these rings plenty of transmission assembly lube. Email info@mistertransmission.com. Copyright 2006-2020 GEARS Magazine. Torque the extension housing bolts to 16 to 20 ft-lbs. Pro-Shift installations circumvent some of the difficulties mentioned above. Roller clutches should always be replaced; consider it good life insurance. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. The seal grooves and seals must be hospital clean. The MLPS is outside and is tied to the manual shift linkage. (You can unsubscribe anytime), ATRA Yes, valve body was removed and Sonnax Sure Cure kit was installed. Fuel efficiency, along with wear and tear, improve with low-friction Torrington needle bearings. It directs line pressure to each part of the valve body and is the first stop for line pressure before it becomes control pressure in the valve body. 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). Bingo! The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. The MCCC is controlled by the PCM. The harness protects the wiring. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. The reverse clutch discs alternate with plates. Make sure all holes line up, then mate and secure the pump halves. Check this ring carefully for proper seating. Reverse; 80-120 psi. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Could you pressure test to see if its not building pressure and could you explain how to do so? Shift up to 2nd and it moves forward just fine, same in Drive. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. The direct clutch should be fitted with new steels and frictions. Is there any tests I can do without pulling the trans first? A lone sealing ring (PN 87054-S96) goes in the top groove. Use a little leverage to install the snap ring. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. The RDI was ordered and taken to the bench for disassembly. These cookies track visitors across websites and collect information to provide customized ads. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. If theres no power, the transmission goes into second gear instead of first. A good rule to remember is that AODEs are standard ratio with 2.40:1/1.47:1 gearsets, while the AOD and 4R70W are wide ratio with 2.84:1/1.55:1 gearsets. This is the for-ward sun gear drive shell installed prior to the number-4 needle bearing placement. 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. Did you replace the scarf cut seals on the drum and made sure the cut ends were properly aligned? Apply uniform pressure to the piston while feeling for a smooth transition. 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. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. I just jumped into it last time without knowing what it was and it bit me. The vehicle in question was a 2014 Ford Econoline E-250 bus. Subscribe. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. 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. Change Your Address, Yes, I would like to receive emails from Gears Magazine. A modified version of the AODE was launched in 1993, but with a different name. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. Does the engine stall when the transmission selector is placed in gear? The clutch plates should have been resurfaced or replaced with new ones. The MCCC gets pulsing signals from the PCM. Not enough line pressure and you get slippage. The AODE/4R70W direct clutch is a stronger stamped steel with more clutch surface area for durability and power transfer. 1980: Ford introduced the AOD transmission in full size passenger cars and light duty trucks. While this might not be a bad idea, it could lead to a clearance issue. Slowly walk the tool around, protecting the seal lip. Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. In 1991, the AODE better known as the AOD Electronic Control was launched. Make sure you wipe it off and put it back in for a more accurate reading. Install the number-7 C-clip. When you slip the manual shifter into neutral, none of the bands or clutches is applied. 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 Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. Could have rolled a lip seal. Ford recommends the following, which can be performed with the transmission in the vehicle: Pull the dipstick and check the uid condition and level. This transmission has lower gear ratios in first and second gears, which brings about improved Pressure is instead directed to the overdrive servo regulator valve. For a better experience, please enable JavaScript in your browser before proceeding. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Also install the input shaft sealing rings at this time. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). 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. First gear isnt usually the first to go (no pun intended) on the 4r70w. Pay close attention to the seal status. The torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. Archive - In other words, are the two pump halves securely tightened? Ford Forum is a community to discuss all things Ford. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. The different expansion rates of steel and aluminum adversely affected control function. Install the low-reverse servo cover and snap ring. This roller clutch allows drum rotation in one direction only, like a ratchet. During installation, watch the seals and protect them from distortion. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. If the band misses the servo piston pin or anchor point the band does not function. Be very careful not to scratch the clutch piston. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). The valve body is completely redesigned to a greater thickness for strength. The seal lip should be pointed toward the pressure source (inside the bore). Click the button below and we will send you an exclusive deal on this book. Lose the spring and you will have slip-yoke leakage. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. The transmission must be removed to check torque converter function. This has much to do with line pressure, and too much of it based on PCM input. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. 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. It allows the seals to transition smoothly without binding. Use plenty of lubrication on the center support bushing. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. During this time, the coolant pressure went from 17 psi to 0. All Rights Reserved. Generously lube this assembly and install it, along with the cover. Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. Do not get this backward. There should be nine springs in serviceable condition free of distortion. Too much line pressure and you can break the transmission case. They should rattle when you shake the clutch and shaft assembly. Is a Transmission Tune up Necessary for My Cars Performance? When the solenoids are energized, the valves are open. Park is the last manual detent when the linkage is full forward. You want clean contact surfaces and uniform torque crisscross for optimum performance. Each transmission build shop has its own approach to assembly. Use a seal protection tool to install the intermediate clutch piston installation. Never reuse old bearings or seals. However, fuel-efficient automobiles were environmentally and economically friendly and could cover more miles with far less fuel. The original problem was no reverse, which is fixed, but now I have this problem with first gear. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. 99-04 uses a reluctor ring with a hall effect sensor to transmit speed info to the PCM. The torque converters turbine drives the input shaft. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. Make sure the C-clip is secure before moving on. Advertising - The direct clutch is now applied, which connects the input shaft to the planet carrier. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. Air pressure should be applied to serve as a valve function check. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. All of these items are checked by dropping the valve body and visually inspecting them. Privacy Policy. Chrysler and General Motors followed swiftly with their respective versions. 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. At WOT, you want high line pressure for firm clutch and band engagement. 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. Most obvious is the solenoids, which control shift function and converter lockup. The uid condition is your first indication of transmission health. Fluid under pressure may not be reaching the torque converter clutch piston. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. There is only one way to install the front pump. Install the forward clutch piston seals. 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. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. They are controlled via two different hydraulic circuits. The plates should have been resurfaced or replaced. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). Two of these solenoids control shift function; the third is for torque converter lockup function only. When we dropped the pan it was full of metal, as expected. Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. Begin with the simplest, most commonsense issues. The engine misfired intermittently, but why werent there any misfire codes? We also use third-party cookies that help us analyze and understand how you use this website. The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. Before mating them, make sure all contact surfaces are clean. Torque the bolts in a strict pattern to prevent warping. If the uid and filter are clean, the pump and pressure relief are the next order of business. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. 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. What is the engine idle speed? The manual shift linkage and manual valve line up like this. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. This cookie is set by GDPR Cookie Consent plugin. These sealing rings must be well lubricated for pump installation. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. But this is not to imply that it will remain the best option at all times. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. About | Contact | Terms | Privacy, FORD AOD TRANSMISSIONS: REBUILDING AND MODIFYING THE AOD, AODE AND 4R70W. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. 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.

Bcso Helicopter Fivem, Articles OTHER