Valve: Service and Repair

LEGEND
1 Camshaft Bearing Cap
2 Camshaft Bearing Cap Nut
3 Camshaft
4 Woodruff Key
5 Camshaft Sprocket Bolt
6 Cylinder Head
7 Camshaft Seal
8 Cylinder Head Reworking Dimension
9 Valves
10 Valve Guide
11 Lower Valve Spring Seat
- Discontinued as of 12/94
12 Valve Seal
13 Valve Springs
- Inner spring discontinued as of 12/94
14 Upper Valve Spring Seat
15 Valve Keepers
16 Valve Lifters

NOTE: During removal and installation procedures, refer to the component location illustration above and component notes below.

COMPONENT NOTES
Camshaft Bearing Cap (1)
- Note installed position.
- Refer to installation sequence below.

Camshaft Bearing Cap Nut (2)
- Tighten to 20 Nm (15 ft. lbs.).

Camshaft (3)
- For Axial play, radial clearance and runout checking, refer to Testing and Inspection.
- For installation sequence refer to procedure below.

Woodruff Key (4)
- Check for tight fit.

Camshaft Sprocket Bolt (5)
- Tighten to: 80 Nm (60 ft. lbs.).

Cylinder Head (6)
- Some remanufactured cylinder heads my be supplied with undersized camshafts and bearing shells.

Cylinder Head Reworking Dimension (8)
- Dimension -a-:
- Minimum: 132.6 mm (5.2200 inch).

Valves (9)
- Do not reface, only lapping of valves is allowable.
- Refer to Valve, Intake/Exhaust.

Valve Guides (10)
- Replacement guides are supplied with a shoulder.
- Refer to Valve Guide for procedures.

Valve Lifter (16)
- Do not interchange.
- Checking, refer to Lifter, Valve.
- When removed keep camshaft contact surface pointing downward.
- When installing, oil contact surfaces.