ENGINE ASSEMBLY
Crankshaft
Installation
Install the main bearing case
on
the crankshaft journals
with marks toward the flywheel end.
Tighten the bolts to
21-25
ft.-Ibs.
(28-34
Nm) torque.
Install the thrust bearing with the oil grooves to the
outside.
Install the crankshaft
in
the engine block.
Each main bearing is numbered for correct location.
Make sure the oil
holes
in
the main bearings are
in
alignment with the holes
in
the engine block [A].
Install the main bearing case bolts and tighten to
47-50
ft.-Ibs.
(64-68
Nm) torque.
Install new seals int he crankshaft rear cover.
Install the rear cover and tighten the bolts to
13-15
ft.
-Ibs.
(18-20 Nm) torque.
Installing The Pistons
The tools listed will be needed forthe following procedure:
A
B
I
I
l.-
Case
Bolt
A-02736
MEL 1063 - Ring Compressor
MEL 1064 - Piston Ring Expander
Alignment~
Marks
tTft.-J--nT1
Assemble the connecting rod to the piston.
NOTE: Make sure the marks
on
the piston and the C
connecting rod are
in
the same direction.
Install the rings on the piston [B].
Position the top ring so the gap is not lines up with the
piston pin. Position the other rings so there is a gap every
go
o.
Use a ring compressor to install the pistons in the engine
block with the marks away from the camshaft.
Align the bearing cap on the connecting rod
[C].
Put oil on the bolts, install them
in
the bearing caps and
tighten to
26-30
ft.-Ibs. (35-41 Nm) torque.
Install the oil pump tube and screen.
Install a new oil pan gasket and install the oil pan.
Installing The Camshaft And Timing Gears
Install the oil pump and tighten the bolts to
60-72
in.-Ibs.
(6,7-8,1 Nm) torque
[OJ.
Install the gear and tighten the nut.
Install the key and the gear
on
the crankshaft.
Revised Sept. 90
D
t----'O
)
-7C-37-
B-03614
A-02731
B-03658
741, 742, 743, 7430S Bobcat Loader
Service
Manual
To Next Page
Loading...