Section IV. BASIC ENGINE REPAIR
haust valves and the center arm operates the fuel in-
jector. Each set of three rocker arms pivoton a sep-
This section provides maintenance and repair instruc-
arate shaft supported by two brackets. Bolts secure the
tions for components of the basic engine. These corn-
brackets to the cylinder head.
ponents include but are not limited to the rocker arm,
(2) Push Rods. The rocker arms are operated by a
cam follower, rocker shaft, exhaust manifold, cylinder
camshaft through cam followers and short push rods
head, oil pan, crankshaft pulley, flywheel, piston and
extending through the cylinder head.
connecting rods, camshaft, crankshaft main bearing,
(3) Cam Followers. Each cam follower operates in
crankshaft, and the cylinder block.
a bore in the cylinder head to keep the follower rollers
in line with the cams.
3-23. Rocker Arms, Push Rods, and Cam
(1) Rocker arms and shaft.
(a) Remove rocker arm cover (para 3- 16).
(1) Rocker Arms. Three rocker arms are provided
(b) Rotate the engine in the direction of engine
for each cylinder; the two outer arms operate the ex-