4-13. Rocker Arm Assembly Adjustment
a. Loosen locknut and back off adjustment screw
c. Always make final valve adjustment with the
(fig. P2). Insert feeler gage between rocker lever and
engine at operating temperature (para 1-5b (7)). Valve
top of valve stem or crosshead. Turn screw down until
tappet clearances are 0.015 inch (intake) and 0.025 inch
lever just touches feeler gage; lock adjusting screw in
this position with locknut.
Section VI. MAINTENANCE OF ENGINE OIL COOLER AND OIL FILTER ASSEMBLY, AND MAIN CLUTCH
b. Cleaning, Inspection and Repair.
4-14. Oil Cooler
(1) Clean parts with an approved cleaning
a. Removal and Disassembly.
(2) Inspect for cracks, breaks, and other
(2) Refer to figure 4-5 and disassemble oil
(3) Replace defective parts.
c. Reassembly and Installation. Reassemble and
(1) Repair damaged tubes by inserting a smaller
o.d. (outside diameter) tube inside damaged tube. Do
not restrict more than 5 percent of total number of tubes
in this manner.
4-16. Clutch Adjustment
(2) If more than 5 percent of tubes are defective,
Turn clutch until adjusting lockpin can be
Caution: Do not damage adjacent with heat
c. Disengage the pin and turn adjusting yoke
clockwise until pin will seat in a new hole.
d. Turn adjusting yoke one hole at a time until any
c. Reassembly and Installation.
tendency of the clutch to slip under normal load
(1) Refer to figure 4-5 and reassemble cooler.
conditions is overcome.
e. Install handhole cover.
4-15. Oil Filter Assembly
Removal and Disassembly.