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
V-NOTCH
"T" POSITION MARK
Figure 20. Setting the Crankshaft to Top Dead Center.
NOTE
To ensure accurate measurements, check the intake and exhaust valve clearances
only when the engine is cold.
2. Using a thickness gauge, check the clearance between the rocker arm and valve stem for the
rocker arm that has no pressure on it. The clearance should be 0.004" to 0.008".
3. If the clearance is out of specification, loosen the lock nut and turn the adjusting screw to set the
correct clearance, then tighten the lock nut.
4. Rotate the flywheel 360 degrees and repeat steps 2 and 3 for the other valve.
ROCKER ARM
ADJUSTING SCREW
CLEARANCE MEASUREMENT
LOCK NUT
VALVE STEM AND SPRING
Figure 21. Intake/Exhaust Valve Clearance Adjustment.
5. Reinstall the cylinder head cover using a new gasket and the three bolts.
6. Insert the detent plunger into the port on the cover.
7. Reinstall the cooling fan case assembly with the four bolts, making sure the rubber seal is in the
proper position.
0050 00-24
