Service manual
ENGINE
ASSEMBLY
31.
Adjust
the
valve
clearance.
Adjust the
No.1,
2,3,
and 6
. valves when the No. 1 piston is on Top Dead Center
(IDC)
or the compression stroke.
Tum
the crankshaft once, setting the No, 4 cylinder pis-
ton at
TDC
(compression) and adjust the
No.4,
5, 7, and
8 valves.
The
valves are numbered 1 - 8 from front
of
the
engine.
WHEN
NO.4
CYLINDER
IS
AT
TOP
DEAD
CENTER
I
41NTAKE
31NTAKE
4
EXHAUST
EXHAUST
2
2
INTAKE
NTAKE
1
f
EXHAUST
I
~.
EXHtUST
WHEN
NO.1
CYLINDER
IS
~T
TOP
DEAD
CENTER
32. Adjust each valve's clearance
by
inserting a 0.012 in
(0.03
mm)
feeler gauge between the rocker arm and the
valve stem.
Valve
Clearance
0.30
mm
(.12
in)
cold
NOTE:
When
the
engine overhaul
is
complete,
run
the
engine
under load
to
check its peiformance. Allow
the
engine
to
cool
to
room
temperature
and
retorque
the
cylinder head
holddown nuts
and readjust
valves.
The
cylinder head
hold-
down
bolts and
valve
adjustment should
be
rechecked again
after
50
hours and periodically
thereafter.
33. Install
the
cylinder
head
cover.
Cylinder
Head
Cover
Bolts
Torque
0.3
-
0.4
m-kg
(2
- 3
ft-Ib)
NOTE:
After
the
engine
has
been
reassembled,
readjust
the
valve
clearances
with
a
warm
engine,
see
ENGINE
ADmSTMENTS.
34. Install
the
thermostat
and
thermostat
housing.
a. Inspect the thermostat housing and the housing
gasket. Apply some sealant to the gasket when
reassembling.
b.
Install the temperature switch and sender and
reconnect their wires.
c. Install a new thermostat and gasket (the old
thermostat can become a spare). When installing the
new thermostat and gasket, apply a thin coat
of
sealant to both sides
of
the gasket.
d.
The
thermostat can be checked for proper operation
by placing it in a pan
of
cold water and then raising
the temperature
of
the water to a boil.
The
thermostat
should open noticeably (with travel on the order
of
1/4
in -
112
in) and
be
fully opened when the water
is boiling.
AIR
BLEED
.
PETCOCK
/
WATERTEMP
WATER
TEMP
SENDOR
35.
Attach
the
engine
coolant
circulating
pump.
Coolant
Pump
Assembly
Bolts
Torque
(use
1/2"
socket)
1.6
-
2.3
m-kg
(12
-
17
ft-Ib)
SWITCH
A complete breakdown
of
the
COOLANT PUMP ASSEMBLY
is
covered elsewhere
in
this
manual.
36.
Adjust
the
injection
timing.
Refer
to
INJECTION
TIMING
elsewhere
in
this
manual.
37.
Mount
the
oil filter
bracket
1 oil
cooler
assembly.
When
installing the new filter apply a thin coat
of
clean
engine oil to the rubber gasket. TIghten by hand.
38.
Mount
the
front
engine
mounting
bracket.
Mounting
Bracket
Torque
4.6
-
6.8
m-kg
(33
-
49
ft-Ib)
39. Install
the
intake
manifold.
Replace
the
four
gaskets.
Intake
Manifold
Torque
11.6
-17.4
ft-Ib
(1.6
-
2.4
m-kg)
40.
Mount
the
fuel filter assembly.
41.
Mount
the
rocker
arm
cover
using
a
new
gasket.
Apply sealant to that portion
of
the gasket that contacts
the gasket only.
Rocker
Arm
Cover
Torque
2 - 3
ft-Ib
(0.3
-
0.4
m-kg)
42.
Attach
the
crankcase
vent
hose.
Engines & Generators
28