FIGURE 195. TORQUE TIGHTENING SEQUENCE FOR CYLINDER HEAD NUTS

fer to figure 189, steps A and B, and re-

(3) Torque tighten the front and/or rear

verse the sequence of instructions to

cylinder head nuts in sequence as shown

connect fuel return tubes to nozzle as-

in figure 195, using cylinder head nut

semblies.

wrench as shown in figure 196 and im-

provised tool to tighten inner cylinder

h. Torque Tightening Cylinder Head Nuts

head nuts as shown in figure 197.

After Engine Run-in.

Torque all nuts to 130 pound feet.

(4) After cylinder head nuts have been

(1) The cylinder head nuts must be re-

properly torque tightened to specifica-

tightened to a torque of 130 pound feet

tions, reassemble engine as directed

after the engine has run whenever new

in (5) and (6) below.

cylinder head gaskets and/or cylinder

head assemblies have been installed.

(5) Adjust intake and exhaust valve clear-

Start engine and run until coolant tem-

ance following instructions in figure 183.

perature gage indicates 170F. Stop en-

gine and torque cylinder head nuts as

(6) Refer to figure 62 and reverse the se-

directed in (2) and (3) below.

quence of instructions to install the

front and rear cylinder head cover

(2) Remove front cylinder head cover and

gaskets and covers. Install new gas-

cover gasket following instructions

kets under covers and breather adapter

which accompany figure 62. The rear

if gaskets are damaged during cover

cylinder head cover and gasket can be

removal after engine warmup.

removed in the same manner.

NOTE: TORQUE TIGHTEN CYLINDER HEAD NUTS IN SEQUENCE 1 THROUGH 14

USING CYLINDER HEAD WRENCH -- 8722924 IN THREE STEPS, AS FOLLOWS:

STEP 1 TORQUE TIGHTEN TO 60 POUND FEET

STEP 2 TORQUE TIGHTEN TO 100 POUND FEET

STEP 3 TORQUE TIGHTEN TO 130 POUND FEET

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