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Service manual

ManualsBrandsWesterbeke ManualsEngineWMD12.5
31323334353637383940
ENGINE
ASSEMBLY
10. Fuel Injection
Pump.
NOTE:
It is easier
to
first install the injection pump to the
timing gear case
and
the entire assembly onto the engine.
Install the injection pump aligning the identification marks.
Mount the injection pump on the gear case, then tighten
the pump drive gear attaching nuts.
Attaching
Nut
Torque
29
-
51
Mb
(4.0
-
7.0
m/kg)
~
,.,-' "
'.
I
11.
Install
the
timing
gear
case. Attach the straight edge on
the cylinder block, then match the surfaces
of
the timing
gear case end and that
of
the cylinder block. If the gasket
protrudes from the mating surface, cut away the excess
with a knife.
Attaching
Bolt
Torque
(1/2
in
socket)
12
-17
Mb
(1.6
-
2.4
m/kg)
12. Install each gear. While aligning the timing mark
of
each gear, install the following gears on each position:
a. Camshaft gear;
b. Idler gears;
c.
Injection pump drive gear;
d. Install the idler gear thrust plate, then tighten the nuts.
Idler
Gear
Thrust
Plate
Nut
Torque
(1/2
in
socket)
16.6
-
23.1
ft-Ib
(2.3
-
3.2
m-kg)
TIMING
GEAR
CASE
INJECTION
PUMP
DRIVE
KEY
IS
VERTICAL
WHEN
ALIGNING
THE
TIMING
MARKS.
GEAR
LINE
UP
GEAR
TIMING
MARKS
CRANKSHAFT
GEAR
TIMING
GEAR
COVER
13. Install
the
friction gear.
14. Install
the
camshaft
gear
lock bolt.
NOTE:
Wedge a clean cloth between the camshaft gear
and
the idler gear.
Lock
Bolt
Torque
(19
mm
socket)
46
-
69
ft-Ib
(6.4
-
9.5
m-kg)
15. Install
the
injection
pump
drive
gear
lock nut.
16. Install
the
oil deflector
on
the
crankshaft.
17. Install the timing
gear
cover.
a. Install the bearing housing cover on the timing
gear cover.
b. Install the injection pump drive gear cover on the
timing gear cover.
c. Install the timing gear cover and tighten the timing
gear cover attaching nuts and bolts after the crankshaft
pulley has been installed temporarily to center the seal.
Timing
Gear
Cover
Torque
11.6
-17.4
ft-Ib
(1.6
-
2.4
m-kg)
18.
Mount
the
oil
pump
assembly. Apply the sealing agent
on the set screw thread and tighten the screw. Ensure the
oil pump drive gear and the driven gear mesh.
Engines & Generators
26