Direct Clutch
DISASSEMBLEExploded View Of Direct Clutch:
1. Remove No. 7 direct clutch hub inner needle bearing.
2. Remove bearing support.
3. Remove clutch pack selective retaining snap ring.
4. Remove clutch pack from drum.
5. Using suitable tools, compress piston return springs and remove piston retaining ring.
6. Note position and direction of lip seals, then remove spring retainer assembly and piston from drum, using air pressure as necessary.
ASSEMBLE
1. Install inner piston seal on clutch drum hub as follows:
a. Position direct clutch lip seal protector T80L-77234-A or equivalent over clutch drum hub.
b. Lubricate seal and seal protector with petroleum jelly.
c. Position seal over installer tool with sealing lip facing down.
d. Push seal down until it snaps off end of protector onto clutch hub.
e. Remove seal protector from clutch hub.
f. Slide seal up until it seats in seal groove.
2. Ensure piston check ball is present and moves freely.
3. Install outer clutch piston seal, ensuring sealing lip points away from spring posts.
4. Install clutch apply piston as follows:
a. Coat piston seals, clutch drum sealing area, and piston inner seal area with petroleum jelly.
b. Install piston in lip seal protector T80L-77254-A or equivalent.
c. Position tool in clutch drum and push piston to bottom of drum using even thumb pressure.
5. Using suitable tool, install piston spring and retainer assembly and the retaining ring.
6. Install clutch pack.
7. Install clutch pack selective retaining ring and check clearance between ring and pressure plate, holding pressure plate downward while checking clearance.
Direct Clutch Clearance Chart:
8. If clearance is not within specifications, as shown in the Direct Clutch Clearance Chart image, install correct replacement snap ring and recheck clearance. Snap rings are available in inch thicknesses 0.050-0.054, 0.064-0.068, 0.078-0.082, and 0.092-0.096.
9. Check clutch for proper operation using air pressure. The clutch should be heard and felt to apply smoothly and without leakage.