Westerbeke 8.0KW-60Hz Service Manual page 20

ENGINE DISASSEMBLY
31. Remove the timing gear case. Remove the bolts that
hold the timing gear case in position and remove the case.
A
WARNING:
The front plate Is bolted Inside the
timing gear case. Do not attempt to remove this
plate along with the timing gear case by tapping.
32. Timing gear backlash measurement. Measure the back·
lash of each gear and keep a record fOr correct measure.
ment.
if
the backlash exceeds the limit.
MEASURING' ,
TIMING GEAR
BACKLASH
TIMING GEAR BACKLASH
CRANKSHAFT GEAR AND IDLER
GEAR· IDLER GEAR AND
CAMSHAFT GEAR· IDLER
GEAR AND FUEL INJECTION
PUMP CAMSHAFT GEAR
CAMSHAFT GEAR/P.T.O. GEAR
STANDARD.
0.0016·· 0.0047
In
(0.04' 0.12mm) ..
LIMIT
0.01.18
In
(0.30mm) .
0.0031 ·0.0075'10 ..
'o~dm
In
(0.08·0.19mm) (0.30mm)
FUEL INJECTION PUMP CAMSHAFT 0.0028· 0.0079 In 0.0118 In
GEAR AND OIL PUMP GEAR (0.07' 0.20mm) (0.30mm)
37. Remove the oil pump. Remove the bolts that hold the oil
pump
to
the cylinder block and remove the pump.
38. Remove tIie front plate. Remove four bolts that hold the
front plate in position, Tap the plate lightly with a plastic
hammer to separate the gasket.
39. Remove the oil pan.
a. Turn
the
engine upside down.
b. Tap the bottom comers of the oil P!'ll with a plastic
hammer to remove the oil pan.
A
CAUTION:
Do not attempt
to
pry off the oil
pan by Inserting a screwdriver
or a
chisel between
the 011 pan and the cylinder block. Damage
to
the
oil pan can be the result.
40. Remove the oil screen. Loosen the nut that holds the oil
screen in position and remove the screen .
8~~
9---.~,u
10
6
. \ ORDER OF DISASSEMBLY
t-UlJ,----5
11----i~
.
33. Remove the idler gear. Th remove the idler gear, rotate
4
I
the gear in a direction of the helix of the teeth to pull it
~
out of mesh.
3~
_
34. Remove the camshaft.
~
... . ... . . . Ji .•....
a. Remove the bolts that hold the thrust plate.
NUMBERS INDICATE THE.
b. Pull the camshaft out of the cylinder block.
SUGGESTED OROER OF
r------------------, .
DISASSEMBLY
A
CAUTION:
Do not cause damage to the lobes
or bearing Joumals when removing the camshaft
35. Remove the fuel injection pump camshaft.
a. Remove the stopper bolt.
b. Thp the rear end of the camshaft with a copper bar to
push it out of
the
front side of the cylinder block.
36. Remove the gear ( when required). To remove the
gears from the camshafr and fuel injection pump
camshafr, use an arbor press.
. C'(LlNIIERiii.IICK
CRANKSHAFT
PISTONS AND
OIL PAN' .
Englnes-& 'Gene;ators
14
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