VALVE SPRING

9-2815-221 -*P

3-44

. . . . . . . . . ---- REPAIR (CONTINUED)

HEAD ----

VALVE SPRING

D Check for 45-49 pounds compression.

A Inspect valve spring for damage. Replace spring if cracked,

E Using compression scale, compress spring to 1.182 inches

pitted or if ends are out-of-square.

(valve open).

B Check spring for

free length.

F Check for 87-97 pounds compression.

C Using a compression scale, compress spring to 1.528 inches

G Discard springs that fail to meet requirements of steps B-F.

(valve closed).

ASSEMBLY

Valve stem seal assemblies are installed on in-

take valve guides only.

A Place new valve stem seal assembly

on intake valve

guides only.

B Apply film of oil (item 16, Appx C) to inside surface of valve

stem seal assembly (1).

C! Apply film of oil (item 16, Appx C ) to valve stem (2).

D Insert

into valve

Check for tight seal by making pencil marks at intervals on

valve face.

F Rotate valve one-quarter turn.