Overrunning Clutch/Low-Reverse Drum

NOTE: TO SERVICE THE OVERRUNNING CLUTCH CAM AND THE OVERDRIVE PISTON RETAINER, THE TRANSMISSION GEARTRAIN AND OVERDRIVE UNIT MUST BE REMOVED FROM THE TRANSMISSION.

DISASSEMBLY

Fig. 144:

1. Remove the overdrive piston (Fig. 144).
2. Remove the overdrive piston retainer bolts.
3. Remove overdrive piston retainer.
4. Remove case gasket.

Fig. 145:

5. Tap old cam out of case with pin punch. Insert punch through bolt holes at rear of case (Fig. 145). Alternate position of punch to avoid cocking cam during removal.
6. Clean clutch cam bore and case. Be sure to remove all chips/shavings generated during cam removal.

ASSEMBLY
1. Temporarily install overdrive piston retainer in case. Use 3 - 4 bolts to secure retainer.

Fig. 146:

2. Align and start new clutch cam and spring retainer in case. Be sure serrations on cam and in case are aligned (Fig. 146). Then tap cam into case just enough to hold it in place.
3. Verify that cam is correctly positioned before proceeding any further. Narrow ends of cam ramps should be to left when cam is viewed from front end of case (Fig. 146).

Fig. 147:

4. Insert Adapter Tool SP-5124 into piston retainer (Fig. 147).

Fig. 148:

5. Assemble Puller Bolt SP-3701 and Press Plate SP-3583-A (Fig. 148).

Fig. 149:

6. Install assembled puller plate and bolt (Fig. 149). Insert bolt through cam, case and adapter tool. Be sure plate is seated squarely on cam.

Fig. 150:

7. Hold puller plate and bolt in place and install puller nut SP-3701 on puller bolt (Fig. 150).
8. Tighten puller nut to press clutch cam into case (Fig. 150). Be sure cam is pressed into case evenly and does not become cocked.
9. Remove clutch cam installer tools.
10. Stake case in 12 places around clutch cam to help secure cam in case. Use blunt punch or chisel to stake case.
11. Remove piston retainer from case. Cover retainer with plastic sheeting, or paper to keep it dust free.
12. Clean case and cam thoroughly. Be sure any chips/shavings generated during cam installation are removed from case.

Fig. 151:

13. Install new gasket at rear of transmission case. Use petroleum jelly to hold gasket in place. Be sure to align governor feed holes in gasket with feed passages in case (Fig. 151). Also install gasket before overdrive piston retainer. Center hole in gasket is smaller than retainer and cannot be installed over retainer.

Fig. 152:

14. Position overdrive piston retainer on transmission case and align bolt holes in retainer, gasket and case (Fig. 152). Then install and tighten retainer bolts to 17 Nm (13 ft. lbs.) torque.
15. Install new seals on overdrive piston.
16. Stand transmission case upright on bellhousing.
17. Position Guide Ring 8114-1 on outer edge of overdrive piston retainer.
18. Position Seal Guide 8114-3 on inner edge of overdrive piston retainer.
19. Install overdrive piston in overdrive piston retainer by aligning locating lugs on overdrive piston to the two mating holes in retainer.
a. Aligning locating lugs on overdrive piston to the two mating holes in retainer.
b. Lubricate overdrive piston seals with MOPAR Door Ease, or equivalent.
c. Install piston over Seal Guide 8114-3 and inside Guide Ring 8114-1.
d. Push overdrive piston into position in retainer.
e. Verify that the locating lugs entered the lug bores in the retainer.