Rocker Arm Assembly: Service and Repair

1. Camshaft pulley
2. Camshaft
3. HLA
4. Seal plate
5. Thermostat housing
6. Cylinder head bolt Disassembly Note
7. Cylinder head Inspection
8. Cylinder head gasket
9. Valve keeper
10. Upper valve spring seat
11. Valve spring
12. Lower valve spring seat
13. Valve
14. Valve seal
Disassembly Note: Inspect for wear or damage
15. Valve guide
16. Water temperature sender unit






HLA

Caution: The HLA must be reinstalled in the same position from which they were removed. If they are not, it can cause premature and uneven wear.

Note: Mark the HLA to show their original positions. Remove the HLA from the cylinder head.






1. Inspect the friction surfaces of each HLA for wear or damage. Replace the HLA if necessary - do not attempt to repair it.
2. Hold the bucket body and press the plunger by hand. If the plunger moves, it is defective. Replace the HLA - do not attempt to repair it.