A-500 A/T - Overrunning Clutch Installation Procedure

90chrysler12
NO.: 21-20-90

GROUP: TRANSMISSION

DATE: Sept. 24, 1990
SUBJECT: A-500 Transmission Overrunning Clutch Installation Procedure

MODEL YEARS: 1988 - 1990 Dodge Ram Van/Wagon, Ram Pickup, Ram Cab & Chassis, Ramcharger (RWD,4WD), Power Ram Cab & Chassis (4WD) Dakota, Dakota Sport, Dakota Convertible, Dakota Cab & Chassis Ram 50, Power Ram 50 (2WD, 4WD)


DISCUSSION

When reconditioning the A-500 transmission it is important that the transmission overrunning clutch cam (outer race) be correctly installed. When the cam is incorrectly installed the transmission will exhibit the following symptoms:

^ Drive only in Manual Low and Reverse.
^ Transmission will lock up (stall the engine) when shifted from Manual Low to any other forward gear selection.

To prevent the possibility of installing the cam incorrectly during assembly the following procedure must be followed.

OVERRUNNING CLUTCH INSTALLATION:

Eleven of the twelve holes in the cam are threaded. The holes are countersunk on the rear face of the cam. Eleven bolts are used to retain the cam to the case. Five short bolts are used to retain the cam to the case (these bolts pass only through the case). Six longer bolts are used to retain the overdrive piston retainer to the case (these bolts pass through both the retainer and case and thread into the cam).

Figure 1:

1. Locate the one non-thread (through hole). Place a small dab of paint on the top of the cam above the hole. Figure 1.

NOTE: THE FACE OF THE CAM WITH THE COUNTERSUNK HOLES MUST FACE THE REAR OF THE CASE.

Figure 2:

2. Place a dab of paint on the rear of the case just above the clutch cam seat as shown in Figure 2.

Figure 3:

3. Align the cam and case paint dabs, install the cam. Be sure the countersunk hole side of the cam faces the rear of the case. Figure 3.

Figure 4:

4. Install the five short bolts in the location shown in Figure 4. Tighten the bolts to 100 inch pound (11N-m) torque.

Figure 5:

5. Install the OD piston retainer. Install the six long bolts in the location shown in Figure 5. Tighten the bolts to 100 inch pound (11N-m) torque.
6. Install the roller/spring assembly in the cam.

7. Install the low/reverse drum (the overrunning clutch cam is pressed onto the drum).

Figure 6:

8. Rotate the low/reverse drum. Viewed from the front of the transmission the drum rotate freely when turner clockwise and lock when turned counterclockwise. Figure 6.
POLICY: Information only.