Assembly - Westerbeke 8.0KW-60Hz Service Manual

ASSEMBLY
1. Main bearing installation.
a. Install the upper halves of the main bearings in the
cylinder block ano the lower halves in the main
bearing caps so their tabs fit into the notches in the
cylinder block and the main bearing caps ..
b. Install the flanged bearing in the No.3 journal.
. . c.
Lightly lubricate the inside surfaces of the bearings
with engine oil.
A-"--_
\-,,~~
'-./
2. Crankshaft installation.
a. Clean the crankshaft with cleaning solvent and blow
dry with compressed air.
b. Fasten a hoist to the crankshaft and hold it in horizontal
position. Carefully put the crankshaft in position in the
cylinder block.
c. Lightly lubricate the crankshaft journals with engine oil.
3. Main bearing cap installation.
a. Coat the mating surfaces of the rear bearing cap and
cylinder block with Loctite Ultra.'Blue.·
b. Install the main bearing caps In positiort. Make sure the
number (arrow head) on the main bearing cap is toward
the front of the engine.
c. Tighten the main bearing cap bolts finger tight only.
A
CAUTION:
Install the front and rear bearing
caps in position so their end faces are even with the
end faces of the cylinder block.
d. Tighten the bolts holding the main bearing caps in steps
. to the specified torque.
TORQUE: 38
±
2 Ib-fl (5.25
±
0.25 Kgl·m)
e. Make sure the crankshaft rotates freely without binding
or catching.
f.
Measure the end play for !he crankshaft. Make.
. reference to End play measurement for crankshaft. If
the end play is incorrect, loosen !he bolts holding the
main bearing caps once and tighten them again.
4. Side sesi installation.
a. Coat !he side seals with Loctite Ultra Blue.
b.
Insert the side seals between the cylinder block and the
front and rear caps and push them in by hand as far as
possible, with their rounded side toward the outside of
the cylinder block.
c. Using a flat plate, push the seals into position, taking
care not to bend them.
. .
~
. SIDE SEALS
~
.
ROU~DED
suie
-::JI
~
ROUNDED sIDe.
~OOll
Q
a °1\ofJ:
.0' 0 0
..
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5. Piston assembling to connectfug
rod.
a. Set Piston Setting Tool (special tool) in a hydranlic ,1) in
press.
b. Put !he connecting rod on the Tool and lubricate the
bore in the rod for !he piston pin with engine oil.
c. Put !he piston in position on the connecting rod, making
sure the model identification on the rod is on the sarne
side as the arrow head on the top of the piston. Put !he
piston pin in position.
II.
Insert the push rod of the Tool into the bore in the
piston for the piston pin and press the pin with the
press.
A
CAUTIQN:
Observe the indicator of the press
when pressing the piston pin.
If
the force of the press
is ready
to
exceed 50kfg (110 Ibf) [490N], stop preSSing
the pin and check the bores in the piston and
connecting rod for alignment.
e. After assembling !he piston and connecting rod, make
sure !he connecting rod moves freely.
6. Using a piston ring pliers, install fhe piston rings on the
piston •
NOTE: The piston rings must be installed with the side that
has the mark "T" toward the top of the piston.
The oil ring must be installed with the coil ring end gap J 8(f
apart from the coil spring joint. . ..
INSTALLING THE
PISTON RINGS .
Engines·& Generators
28