Low/Reverse Clutch Assembly: Assembly

Low/reverse piston 

1. Install new low/reverse outer piston O-ring seals.
Fig 1: Inner O-Ring Seal
Courtesy of FORD MOTOR CO.
2. Install new low/reverse drum O-ring seals.
Fig 2: Locating Low/Reverse Drum O-Ring Seals
Courtesy of FORD MOTOR CO.
3. Lubricate the O-ring seal with clean automatic transmission fluid and install the low/reverse piston.
Fig 3: Locating Low/Reverse Clutch Piston
Courtesy of FORD MOTOR CO.
4. Install the low/reverse clutch return spring.
Fig 4: Locating Low/Reverse Clutch Return Spring
Courtesy of FORD MOTOR CO.
5. Using the special tool, install the retaining ring.
Fig 5: Identifying Retaining Ring Using Special Tool (307-525)
Courtesy of FORD MOTOR CO.
6. Install a new roller bearing on the center support.
Fig 6: Locating Thrust Bearing On Center Support
Courtesy of FORD MOTOR CO.

Low/reverse clutch stackup 

NOTE: All intermediate clutch plates, friction and steel are of a wave-type design.
7. Install the special tool into the case.
Fig 7: Installing Special Tool (307-554) Into Case
Courtesy of FORD MOTOR CO.
8. Install the special tool into the case as shown.
Fig 8: Installing Special Tool (307-554) Into Case
Courtesy of FORD MOTOR CO.
9. Measure case stop depth.

   Description	Reading
   Measure the distance from the top of the upper gauge bar to the top of the lower gauge bar. Record this reading as the case measurement. Record as reading A

Fig 9: Measuring Case Stop Depth
Courtesy of FORD MOTOR CO.
10. Measure the clutch pack height.

    	Description	Reading
    A.	Place the clutch pack with the pressure plate on to the special tool with the wave spring down. Slide the clutch off to the side so the probe of the dial indicator is touching the gauge plate of the special tool. Zero out the dial indicator.
    B.	Carefully lift the probe up enough to slide the clutch pack under the probe to take a reading. Record this reading. Rotate the clutch pack 180 degrees and take a second reading. Add the first and second readings together and divide the total by 2. Record this reading as B.

Fig 10: Measuring Clutch Pack Height
Courtesy of FORD MOTOR CO.
11. Measure the piston to center support shoulder height.

    Description	Reading
    Measure the piston to center support shoulder height. Record this measurement. Rotate the center support 180 degrees and record this measurement. Add the first and the second measurements, then divide by 2. Record this as reading C.

Fig 11: Measuring Piston To Center Support Shoulder Height
Courtesy of FORD MOTOR CO.
12. Calculate the end clearance

    Description	Reading
    Subtract B and C from A to determine end clearance
    Total C measurement
    End clearance specification	1.0-1.6 mm (0.039-0.063 in)

    Compare the end clearance to the specification. If the end clearance is out of specification, select the next thinner or thicker plate as required and repeat Steps 10, 11 and 12.