Step 5: Check Band Anchor and Servo Pin Alignment Look through the front of the case and observe the over-drive band anchor and servo piston pin alignment. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. Park gives the same result but also engages the parking pawl. Line it up for the overdrive band servo piston. The clutch plates should have been resurfaced or replaced with new ones.
Use an abundance of transmission assembly lube. 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. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. Lose the spring and you will have slip-yoke leakage. Master and deluxe kits are available for most models.
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. Ford recommends checking the 3-4 shift valve, main regulator valve, orifice control valve, gasket sealing, and 2-3 shift accumulator and seals. Check the pressure plate for freedom of movement in the clutch drum. The next items to check are the number-3 and number-4 sealing rings. Step 8: Install Forward Clutch Discs Install the forward clutch frictions alternately between the steels.
Twist and wiggle the stub shaft and feel for proper seating. If this cannot be achieved, go with the appropriate retaining ring:. It does what the governor did hydraulically. Step 10: Pack Pump Rotor Cavity with Assembly Lube Professional Mechanic Tip 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 direct clutch should be fitted with new steels and frictions. The 2-3 back-out valve, as the name implies, regulates the feel of a 2-3 upshift.
The planetary one-way clutch overruns. Installing them wet gives them a good start against freshly resurfaced clutch drums. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. Step 3: Install 2-3 Accumulator Piston and Spring The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. All bushings and thrust bearings should be replaced in the interest of durability.
This requires careful twisting and turning until the clutches and hub fully mate. Hydraulic controls are also different between the 6T40 and 6F35 meaning valve bodies and oil passages will not be the same. Shifting Problems Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? Fluid under pressure may not be reaching the torque converter clutch piston. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. Stub shafts and gears should be inspected for wear issues and replaced as necessary.
The transmission must be removed to check torque converter function. If the spring is missing and cannot be found, replace the seal. This manual is directed towards the professional transmission technician, all builder notes and cautions should be adhered to in order to avoid mistakes or personal injury. Processor Outputs Electronically triggered solenoids are simple electromagnets. Step 9: Install Reverse Clutch Rear Pressure Plate Install the reverse clutch pressure plate rear or outer while checking all clutches and plates for freedom of movement. Before mating them, make sure all contact surfaces are clean. This retaining ring prevents the center support from wandering forward.
Then re-torque them for a final check. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Apply uniform pressure to the piston while feeling for a smooth transition. Covers transmission assembly, dis-assembly, diagnosis, troubleshooting, and electronic controls and operation. Reverse Clutch Assembly Step 1: Install Number-9 Needle Bearing Install the number-9 needle bearing in the case, using transmission assembly lube. The harness protects the wiring.
Step 11: Install Front Pump Sealing Rings These are the front pump stator support iron sealing rings, which are like piston rings in an engine. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. This transmission can be found in the 2005 Navigator, 2006 Explorer and Mountaineer, 2007 Expedition, 2008 F150 and 2010 Mustang. The planetary one-way clutch overruns. Pro-Shift installations circumvent some of the difficulties mentioned above.