Fuel is very flammable and can explode easily. To avoid serious injury or death, keep fuel
away from open fire and keep fire extinguisher within easy reach when working with fuel.
Do not work on fuel system when engine is hot. Fuel can be ignited by hot engine.
Inspect cam follower bores (7) in cylinder head (1) for scoring or wear.
If light score marks are found, clean up with crocus cloth moistened with diesel oil.
Measure inside diameter of cam follower bore (7). Diameter must be between minimum 1.062 in.
(26.975 mm) and maximum of 1.063 in. (27.000 mm).
Replace all parts failing inspection.
Inspect 16 valve seat inserts (8) for cracks, pitting, chipping, scoring, or excessive wear. If valve seat
insert fails inspection, replace valve seat insert.