Figure 4-157. Removing or installing valve rocker arm cover bolts and removing valve rocker arm cover.

Remove

and valve stems, the rocker arm rollers are on the

camshaft base circle, and the valves are com-

Note. All valve rocker arm covers are removed

pletely closed.

in the same manner.

1. Separate intercylinder connector flanges (A) from

5. Remove four bolts (E) and packings with retainer and

valve rocker arm cover.

remove valve rocker arm cover.

Install

Note. Use a piece of shim stock to loosen

Note. The cylinder and valve rocker arm cover

flanges of intercylinder preformed hose.

are machined as an assembly. The number on

Caution; Do not damage sealing surface on

the rocker cover must be kept with its mating

flange of intercylinder preformed hose as it will

number on cylinder to insure camshaft bearing

cause oil leaks and replacement of hose will be

alinement

and

running

clearance.

required.

Note. The

bolts

and

screws

securing

valve

2. Remove four bolts (B) and flat washers.

rocker arm cover to cylinder must be torqued

3. Remove seven bolts (C) and flat washers.

4. Remove two screws (D) and flat washers.

carefully to prevent stripping of heli-coil inserts.

Note. Before removing rocker arm cover bolts

1. Position valve rocker arm cover on cylinder and install

(E),

instruction

below,

the

tension

the

four bolts (E) and packings with retainer and tighten to

275-325 pounds inch torque.

valve rocker arms, caused by the valve springs.

2. Install two screws (D) and flat washers and tighten to

must be released. Turn engine, figure 4-51, until

100 pounds inch torque.

valve rocker arm rollers are on camshaft base

3. Install seven bolts (C) and flat washers and tighten to

circle, or until both valves are closed, to relieve

100 pounds-inch torque.

spring tension before removing cover. Check

4. Install four bolts (B) and flat washers and tighten to

100 pounds inch torque.

rocker arms to see that they move up and down.

5. Position intercylinder connector flanges (A) on valve

If movement (clearance) cannot be felt, turn

rocker arm cover.

engine until clearance is evident. When clearance

is obtained between both adjusting screw pads

Figure 4-157. Removing or installing valve

rocker arm cover bolts and removing valve

rocker arm cover.

4-77