Reassembly: Overhaul Land Rover Discovery III

Disassembly

Note. If both rocker shafts are to be removed, identify each assembly to ensure refitment to original cylinder head.

Scheme 120

Scheme 121

Scheme 122

Scheme 123

1. Release hot leads (spark plug wires) from rocker cover clips. see scheme 131and see scheme 132.
2. Noting fitted position of 4 long screws or multi-hex bolts, remove and discard 8 screws/bolts securing rocker covers; remove rocker covers. see scheme 133
3. Remove and discard rocker cover gaskets.
4. Progressively remove 4 bolts securing rocker shaft assembly to cylinder head, release rocker shaft from push rods and remove rocker shaft. see scheme 134
5. Ensure push rods remain located in tappets when rocker shaft is removed. Retain all components in their removed sequence for re-assembly.
6. Remove and discard split pin from one end of rocker shaft. see scheme 135
7. Collect plain and wave washers.
8. Remove the rocker arms, rocker pillars and springs.
9. Remove and discard remaining split pin and collect plain and wave washers.