TM 4320-1 4/1
Figure 5-18. Camshaft Bearings
Keep the intake and exhaust tappets separate and return
into same location at reassembly.
Cam and tappet
Figure 5-19. Cam and Tappet
Check the outer surface of the tappet for wear and damage. Replace if defective.
Check that the tappet stem OD for the intake and exhaust valves is greater than 0.271 inch (6.87 mm).
Replace tappet if the stem is under wear limit.
Check that the hole diameter in the cylinder block for the intake and exhaust valve tappets is less than
0.278 inches (7.06 mm). Replace cylinder block if hole diameter exceeds wear limit.
Check that the OD of the tappet for the fuel injection pump is greater than 0.941 inches (23.89 mm).
Replace tappet if OD is under the wear limit.
Check that the hole diameter in the cylinder block for the fuel injection pump tappet is less than 0.947
inch (24.06 mm). Replace cylinder block if hole diameter exceeds wear limits.
m. Check for damage or worn camshaft gear. Replace if required.