Figure 14-42. Cylinder Head Capscrew Locations and Torquing Sequence
(11) Adjust all intake and exhaust valves to
a cold tappet clearance setting of 0.018 inch.
(16) Retighten the 20 capscrews to 155-165
foot-pounds torque following the sequence depicted in
figure 14-42 section A. If capscrew does not move when
this specified torque is reached, back off slightly by
loosening, the retighten to specified torque. This is im-
portant in eliminating possible false torque readings due
to temporary thread seizure.
(12) Connect the oil feed tube to the fitting
in the cylinder head and install cylinder head cover and
gasket.
(13) Replace engine valve cover, tachometer
drive, adapter, overspeed switch, manifolds, exhaust
pipe, radiator, cooling hoses, turbocharger, and engine
area panels. Refer to Operator and Organizational
Maintenance Manual.
(17) Position rocker arms, shaft and
brackets assembly on cylinder head and align rocker
arm adjusting screws in the push rod cup ends. Install
the six long capscrews; also install the six 3 3/8 inch
capscrews and lockwashers in the rocker arm brackets.
Tighten the long capscrews to 90-110 foot-pounds and
the 3/8 inch capscrews to a torque of 28-33 foot-pounds
following this sequence depicted in figure 14-42, section
B.
(14) Fill the cooling system. Run engine for
approximately one hour, perferably under load, with a
minimum coolant temperature of 160° F. Inspect engine
for leaks.
(15) Remove valve cover and rocker shaft
assembly from cylinder head to gain access to the 20
capscrews securing the cylinder head.
(18) Retighten the 6 long capscrews to
155-165 foot-pounds following the sequence depicted in
figure
14-42, Section B. Retighten the 3/8 inch
capscrews to maintain a torque of 28-33 foot-pounds per
capscrew.
Change 6
14-87
