Isuzu 4JA1 Workshop Manual page 100

6A – 78 ENGINE MECHANICAL
Camshaft and Camshaft Bearing Clearance
Use an inside dial indicator to measure the camshaft bearing
inside diameter.
Crankshaft Bearing Inside Diameter
014RY00034
If the clearance between the camshaft bearing inside diameter
and the journal exceeds the specified limit, the camshaft
bearing must be replaced.
Camshaft Bearing Clearance
Camshaft Bearing Replacement
Camshaft Bearing Removal
1. Remove the cylinder body plug plate.
2. Use the bearing replacer to remove the camshaft bearing.
Bearing Replacer: 5-8840-2038-0
014RY00035
Camshaft Bearing Installation
1. Align the bearing oil holes with the cylinder body oil holes.
2. Use the replacer to install the camshaft bearing.
Bearing Replacer: 5-8840-2038-0
014RY00036
Standard
50.00 - 50.03
(1.968 - 1.970)
Standard
0.055 (0.0022)
mm (in)
Limit
50.08 (1.972)
mm (in)
Limit
0.12 (0.0047)