CYLINDER HEAD (Cont'd)
Assembly
Install the valves.
Put oil
in
the valve seal and install the seal on the valve.
Install
the valve spring and retainer.
Install the spring collet and the valve cap.
Install the thermostat.
NOTE:
If
a new cylinder head
is
installed be sure
to
install
the
screw
plugs
which
are
shipped
with the
new
cylinder
nead.
Installation
Install a new gasket and O-ring. Install a shim if there was
one removed.
Install the cylinder head
on
the engine block.
Put oil on the bolts and nuts and tighten to the following
torque:
Flange Head Bolt . . . . . . .
..
6~8
ft.-Ibs.
(88-92
Nm)
Bolt
WNlasher . . . . . . . . .
..
58-61 ft.-Ibs.
(79-83
Nm)
Use the tightening sequence as shown [A].
Lower the piston which
is
to be measured for the
clearance, between the cylinder head and the piston.
Put a piece of solder
in
the injector port.
Make sure the solder does not touch the valves [B].
Turn the engine
manually.
Remove the solder and measure it. The thickness must
be
0.028-0.035 inch (0,7-0,9 mm).
If
the measurement
is
not
in
the specifications, remove
the cylinder head and add the correct shim between the
cylinder head the engine block.
Install the cylinder head and tighten the bolts and nut [A].
NOTE: Be sure
to
torque the
bolts
and
nuts
again
after
the
engine has been operated
for
30
minutes.
Install the push rods.
Install the water return pipe.
Install the rocker arms.
Tighten the rocker arm holding nuts to 15
ft.-Ibs. (20 Nm)
torque.
Install the alternator, belt and shield.
Install the intake manifold.
Install the injector nozzle with a new copper gasket.
Tighten to
22-36
ft.-Ibs. (30-49 mm) torque.
Install the injector tubelines.
Adjust the valve clearance. Make sure the piston
is
at
T.D.C. when making the adjustment [C].
Install the valve cover.
Revised June
91
-7C-23-
A
BOLT 0
NUT.
I
8-03624
741,742,743, 743DS
Bobcat
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