4
TM 5-3805-290-23-2
INTAKE/EXHAUST VALVE LASH ADJUSTMENT
THIS WORK PACKAGE COVERS
Inspection/Adjustment
INITIAL SETUP
Maintenance Level
Personnel Required
MOS 62B, Construction Equipment Repairer (2)
Direct Support
References
Tools and Special Tools
WP 0002 00
Tool kit, general mechanic's (Item 96, WP 0205 00)
Shop equipment, automotive maintenance and
Equipment Conditions
repair: field maintenance, basic, less power (Item
Valve cover removed (WP 0024 00)
75, WP 0205 00)
Drawings Required
Materials/Parts
TM 5-3805-290-23P, Figure 6
Cleaning compound, solvent, type III (Item 9, WP
Estimated Time to Complete Task
2.5 hr
Rag, wiping (Item 41, WP 0206 00)
INSPECTION/ADJUSTMENT
Cylinder and Valve Location
(A) Inlet valve
(B) Exhaust valve
427-B0510
1.
If valve lash requires adjustment several times in a short period of time, excessive wear exists in different part of engine.
Find problem and make necessary repairs to prevent more damage to engine.
2.
Not enough valve lash can cause rapid wear of camshaft and valve lifters and can indicate that seats for valves are worn.
3.
Valves become worn from these causes:
a.
Fuel injection nozzles operate incorrectly.
b.
Excessive dirt and oil on filters for inlet air.
c.
Fuel injection pump settings incorrect.
d.
Engine exceeds load capacity.
