Each gear should roll smoothly without sideplay or much endplay. Unfortunately, little if anything from the 4R100 fits your C6. With a fixed displacement pump, the pressure increases with rotational speed, sometimes providing unneeded pressure. See Transtar or your local transmission parts supplier for this screen. This frees up the manual and kickdown linkages. Complete servo assembly with new servo piston, Gasket and outer seal. For tow vehicles and classic Fords, it is an outstanding piece because it was so rugged.
Step-8: Remove One-Way Clutch Documentation Required Take note of how the rollers and springs are installed when you remove the oneway clutch. This can help in eliminating these items as a potential cause of transmission noise. If not - repeat the procedure. Step-4: Remove Belleville Spring The forward clutch piston is returned to rest by a Belleville spring, also known as a disc spring. Step-8: Remove Band Struts Remove and inspect intermediate and lowreverse band struts. There were C4 transmissions with pan-fill dipstick tubes blended case and bellhousing with 164-tooth flexplates. Bellhousing and main case are a one-piece design.
. C4 transmissions from 1964 to 1971 have screw-in throttle valves. In August 1964, the C4 and the V-8s it was mated to were fitted with a larger six-bolt bellhousing to reduce noise, vibration, and harshness. As a matter of practice, motorists never service automatic transmissions until they do fail. End float thrust will no doubt be changed during case assembly. They need regular fluid and filter changes if you want longevity.
This shot shows the front drive line sub assembly before being assembled into the case. When automatic transmissions fail, there are physical reasons that can be identified when you pay close attention to details. Step-10: Use Flat-Blade Screwdriver Professional Mechanic Tip Manual shift lever lip seal pops out with a large flatblade screwdriver. With the main case assembly finally complete after disassembling and reassembling for the umpteenth time to get the end float exactly right. Plan to replace all thrust washers and bushings. Clutches are quicker and more durable than bands and drums. These purely mechanical no electronic controls automatic transmissions are still popular with racers, hot rodders, and restorers today due to their simplicity and low cost.
Now fill the pan up through the drain hole until fluid runs out. Later versions had a transmission fluid cooler in the radiator. As with all of our Extreme transmissions particular attention is paid to the front surface of the pump ensuring that it is not only perfectly flat but machined 90 degrees to the alignment of the pump. Upon disassembly, the extension housing is unbolted and separated from the body of the transmission. Excessively worn gear and pump-cavity surfaces are grounds for replacement or machine work. Step-8: Remove Tailshaft C-Clip The tailshaft is secured with a C-clip.
Take care when removing the pump so that other parts inside the transmission aren't damaged during the maintenance. On the engine-side of the torque converter is a drain plug, which will sometimes leak. Check clutch piston for wear and check ball integrity. Remove the the governor and check for freedom of valve movement. Scoring adversely affects pump pressure. Replace the low-reverse piston in any case. However, it calls for the same kind of detailed inspection as the forward planet, checking planet gears for excessive wear and oscillation and the carrier for cracks and other damage.
The final product has taken a total of three days to build and another day to paint but the Extreme C6 transmission is now complete. Transtar or Trans-Go are among the best sources. Step-12: Inspect Thrust Washers Critical Inspection Closely inspect the thrust washers, which provide a loadbearing surface between rotating geartrain parts. The B intermediate servo cover indicates mismatched parts because the B servo is for six-cylinder engines. Most pumps today are variable displacement. Ford is infamous for annoying engineering changes, dozens of them over the production life of a unit design, which means you must pay very close attention to parts intended to work together and parts that were never intended to be together.
If the transmission gets hot enough, the seals within the transmission will sustain damage. As with the C4, examine friction and steel surfaces for heat damage. Between the pan and the transmission is a single cork gasket. Transmission failure under warranty is considered part of the cost of doing business. Damaged lines should only be replaced with a flare-nut wrench. Measure thicknesses and closely examine these washers for wear. Each oil pump is carefully machined to our exact tolerances and in some cases, incorporates our own pump bearing assembly for less drag and horsepower loss, but still yields more mile per hour than the more commonly used thrust washer types.
The same can be said for band heat damage. Step-6: Remove Forward Planet Carrier Critical Inspection Forward planet carrier from this mid-1970s C6 is aluminum for weight reduction. Again, take note of roller and spring configuration. Transmission shops have special spring compressors for clutch disassembly; however, you can do this at home with four C-clamps. Remove the seals at this time. Ford called its C4 the Cruise-O-Matic while Mercury called its C4 the Merc-O-Matic. Although these transmissions were rugged and dependable, they were heavy, complex, and not easily adapted to performance applications.
Mating surfaces should be smooth and void of scoring. The width of both the inner and outer pump gears are checked for tolerance after being wet blocked flat. The front pump has a nylon thrust washer number-2 , which you should replace if it exhibits heat damage. The Ford-O-Matic and Merc-O-Matic were available behind the 144-, 170-, and 200-ci straight-6 engines, along with the 221- and 260-ci V-8s, which came later in 1962. Step-3: Disassemble Forward Clutch Next, disassemble the forward clutch by removing perimeter snap-ring, clutches, and drive plates. Internally, it has different valving and shift programming.