Camshaft Bearing - Chevrolet 1988 Light Duty Truck Repair Manual

6A-12 GENERAL ENGINE MECHANICAL
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A. B earing Tool C. N u t
B. P ilo t D. P u lle r S crew
Figure 19— Removing or Installing the Inner
Camshaft Bearings

CAMSHAFT BEARING

REPLACEMENT (2.5 L AND
6.2 L ENGINES)
Refer to the proper section.
CAMSHAFT BEARING
REPLACEMENT (ALL EXCEPT
2.5 L AND 6.2 L ENGINES)
Cam shaft bearings for scratches, pits, or loose fit in
th e ir bores. R eplace the ca m sha ft be arings if
necessary.
D isassem b le (F ig u res 19 and 20)
Tool Required
J 6098-01 Cam shaft Bearing
Remover and Installer
1. Rear cam shaft plug or cap.
2. Inner cam shaft bearings. Use J 6098-01 (figure 19).
• Insert the pilot into the front cam shaft bearing
bore.
• S lide the p u lle r screw, w ith the nut and
washer, through the pilot.
• Insert the bearing tool into the inner cam shaft
bearing bore, with the shoulder of the tool
against the bearing.
• Hold the puller screw with a wrench. Turn the
nut with a second wrench to pull the cam shaft
bearing from its bore.
• R e p e a t th is p ro c e d u re
rem aining inner cam shaft bearings. Note that
the rear inner bearing must be removed with
the pilot fitted into the rear cam shaft bearing.
3. Outer cam shaft bearing. Use J 6098-01 (figure 20).
CAMSHAFT BEARINGS
) FRi
B-05276
I Q i
*
to re m o v e th e
Figure 20— Removing or Installing the Outer
Camshaft Bearings
• Assem ble the bearing tool and driver handle.
• Drive the outer cam shaft bearings out of the
block.
C lean
• Cam shaft bearing bores in the block.
A ssem b le (F ig u res 19, 2 0 , and 21)
Tool Required
J 6098-01 Cam shaft Bearing
Remover and Installer
The outer cam shaft bearings must be installed first.
These bearings serve as guides for the pilot, and
help center the inner bearings during the installation
process.
Be sure to fit the correct cam bearing into the bore.
The cam bearing bores vary in size.
A. C h e c k in g o il h o le a lig n m e n t w ith b ra ss rod.
M ake rod as s h o w n u s in g 3/32" rod a b o u t
762 m m (30") lo n g.
Figure 21— Checking Camshaft Bearing Oil Hole
Alignment (Typical)
B-09446