CYLINDER HEAD INSTALLATION.

TM 10-3930-623-34

5. Install oil pan (28) using new gaskets (32).

5. Loosely install remaining cylinder head

Install screws (29).

capscrews (54) and washers (55) in cylinder head.

6. Torque oil pan screws (29) to 12-16 foot-

6. Install spark plugs to prevent foreign materials

pounds.

from falling into cylinders.

7. Tighten cylinder head screws, following

NOTE

sequence shown in figure 6-7. With an accurate torque

Excessive tightening of oil pan

wrench, torque each screw to 35 to 40 foot-pounds.

screws will cause a wavy condition of

the oil pan flange permitting leakage.

CAUTION

6-38. CYLINDER HEAD INSTALLATION.

Failure to torque cylinder head

capscrews

the

prescribed

1. Wipe cylinder block deck clean and dry.

Lay

sequence may be cause for a blown

cylinder head gasket (59, figure 4-22) in position.

head gasket or compression leakage.

2. Wipe mating surface of cylinder head (52) and

8. Install thermostat, water outlet elbow and any

position on cylinder block.

plugs which will prevent foreign matter from entering

cooling jacket.

3. Loosely screw into position the six threaded high

head screws (53) and washers (55) at oil dip stick

6-39. Deleted.

bracket, coil bracket and lifting eye positions.

4. Loosely assemble high head screw (56) and

washer (57) in cylinder head at position 18 of Cylinder

Head Tightening Sequence, figure 6-7. This screw

6-40. Deleted.

provides tapped boss for distributor holddown screw.

NOTE

To facilitate

location of special

6-41. TIMING GEAR COVER ASSEMBLY. The timing

screws, mark

cylinder head with one

gear cover (2, figure 4-25) carries the fan drive assembly

light center

punch dimple for

and the cam gear governor control assembly. The fan

locations of

screws (53) and two

drive assembly gear is mated to the camshaft gear and

dimples for

screw (56) before

must be adjusted for backlash after installation of the

removal.

timing gear cover.

Figure 6-7. Six Cylinder Head Screw Tightening Sequence

6-9