Replacement Of Timing Chain And Sprockets; Replacement Of Camshaft - Plymouth Pl4S Service Manual

ENGINE
m
seal to assure a tight, even contact between
the seal and its seat (fig. 5 ) .
q)
When installing the cover, tighten
screws only enough to hold it in place. Insta!l
special tool C-522 (fig. 6 ), holding it in place
with crankshaft starting jaw and tighten
starting jaw with fingers only. As the cover
screws are being tightened and the gasket
is being compressed, tighten the starting jaw
nut, maintaining a slight tension between
the seal and the centering tool. Then remove
tool, install starting jaw and tighten it to a
minimum of 108 foot pounds torque.
13. REPLACEMENT OF TIMING
CHAIN AND SPROCKETS.
193642-The timing chain is not ad-
justable. To remove the chain or sprockets,
remove the timing gear case cover, timing
chain and sprockets. To assemble, place the
chain over the sprockets so that when the
camshaft sprocket is bolted to its hub, the
timing marks on both sprockets are opposite
each other, and in line with the centers of
both the camshaft and crankshaft (fig. 7 ) .
Be sure the oil tube is located so as to direct
oil onto the crankshaft sprocket.
14. REPLACEMENT OF CAMSHAFT.
1936-42
( 1) To remove camshaft or thrust plate
without removing engine, remove the radi-
ator core and two radiator grilles on 1942
models; remove radiator and front fenders
as a unit on 1939-41
model~;
remove radi-
ator assembly on 1936-38 models. See para-
graphs 9 and 10 on page 100.
(2) Remove fuel pump, oil pump and
valve compartment covers.
( 3) Remove timing gear case cover and
timing chain. Lift valves and tappets clear
of camshaft.
( 4) Rotate camshaft to clear any ob-
struction, and withdraw it from cylinder
block.
( 5) Before installing camshaft, check
end play between the sprocket hub and
!-Centering tool C-522
2-Engine chain case cover and oil seal
Figure 6-Centering Chain Case Cover Oil Seal
· (1936-42
Models)
1-Mark on camshaft 2--Mark on crankshaft
sprocket sprocket
3-Center line
Figure 7-Marks
on
Timing Sprockets
(1936-42 Models)
thrust plate; if end •play exceeds .006 inch,
press off the thrust plate and install a new
one.
( 6) When installing camshaft, use new
gaskets, reset the ignition timing and check
the valve clearance with the engine hot.
Align hood and aim headlights, if necessary.