ENGINE TROUBLESHOOTING AND MAINTENANCE PROCEDURES.
TEST OR INSPECTION
LITTLE ROCKER ARM MOVEMENT OR TOO MUCH VALVE CLEARANCE.
Check the valve lifters.
If the valves are not moving freely--replace valve lifters. Refer to paragraph 3-12.
Check the cams on camshaft.
If the cams are worn, damaged or defective--contact General Support.
VALVE ROTOCOIL OR SPRING LOCK IS FREE.
Check the locks. Locks with damage can cause the valve to fall into the cylinder.
If the locks are damaged or defective--replace. Refer to paragraph 3-13.
Check the valve springs.
If the valve springs are damaged or defective--replace. Refer to paragraph 3-13.
OIL AT THE EXHAUST.
Check the valve compartment for excess oil.
If there is too much oil in the valve compartment--make sure there are plugs at both ends of the rocker arm
shaft. Refer to paragraph 3-12.
Check the valve guides.
If the valve guides are worn--the cylinder head should be reconditioned. Contact General Support.
Check the piston rings.
If the piston rings are worn, damaged or defective--contact General Support.