ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0050 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
DIESEL ENGINE AND FUEL TANK ASSEMBLY
Intake and Exhaust Valve Clearance Adjustment:
Parts (TM 10-4610-309-24P):
Cylinder head cover gasket
Remove the cooling fan case and cylinder head cover as follows (see Figure 19):
1. Remove the four bolts with washers securing the cooling fan case and lift the cooling fan case off
the engine.
CAUTION
Be careful not to damage the fins on the flywheel.
2. Remove the rubber detent plunger from the oil port.
3. Remove the three cylinder head cover bolts and lift cover off of the cylinder head. Remove and
discard the cover gasket.
CYLINDER HEAD
COVER BOLTS
FLYWHEEL
COOLING FAN CASE
OIL PORT
CYLINDER
HEAD COVER
COVER GASKET
RUBBER SEAL
DETENT
PLUNGER
BOLT
CYLINDER
HEAD
Figure 19. Cooling Fan Case and Cylinder Head Cover Removal.
Check/adjust the intake and exhaust valve clearances as follows (see Figure 20 and Figure 21):
1. Turn the flywheel by hand in the direction of least resistance until the "T" position mark on the
flywheel lines up with the V notch on the cylinder body fin (see Figure 20). This places the engine
crankshaft at T.D.C. (Top Dead Center). In this position, one of the valve rocker arms will have
pressure on it and the other will not.
0050 00-23
