Onan J Series User Manual

BOTTOM OF
RECESS
BEARING
31+1
95z-X
*%i - %%&., '
PRESS BEARING
FLUSH
WITH
FRONT CRANK-
CASE SURFACE
ALIGN
OIL
HOLES
FRONT
BEARING
FIGURE 81. CAMSHAFT BEARINGS
..
FIGURE 82. CAMSHAFT END PLAY
The four-cylinder model uses an additional split
center main bearing.
Remove the crankshaft as follows:
1. Remove the lock ring and retaining washer in
front of the crankshaft gear.
2. Pull off crankshaft gear, Figure 84. It has two %-20
UNC tapped holes for attaching a gear pulling
ring (ONAN tool 420-0275). Use care not to
damage teeth if gear is to be reused.
3. Remove oil pan and piston and connecting rod
assemblies.
4.
FOUR CYLINDER ONLY. Remove bearing cap
from center main bearing.
5. Remove rear bearing plate from crankcase. Re-
tain or measure thickness of rear bearing plate
gaskets. These gaskets determine crankshaft
end play.
6. Remove crankshaft through rear opening in
crankcase.
(Four Cylinder Only-Catch upper
half of main bearing support as
it slides off its
mounting surface.)
EIGUREj.. , TIMING MARKS FIGURE 84. REMOVING CRANKSHAFT GEAR
63
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Onan J Series Specifications

General

Brand	Onan
Model	J Series
Category	Engine
Language	English