GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Isuzu
🢒
2003
🢒
Isuzu - N Series
🢒
Engine
🢒
Engine Mechanical - 5.0L and 5.7L
🢒 Valve Stem Oil Seal and Valve Spring Replacement
Tools Required
•
J 22794
Spark Plug Port Adapter
•
J 38606
Valve Spring Compressor
•
J 5892-D
Valve Spring Compressor
•
J 42073
Valve Stem Oil Seal Installer
Removal Procedure
Remove the valve rocker arm covers. Refer to
Valve Rocker Arm Cover Replacement - Left Side
or
Valve Rocker Arm Cover Replacement - Right Side
.
Remove the spark plugs. Refer to
Spark Plug Replacement
in Engine Electrical.
Install the
J 22794
into the spark plug hole.
Caution:
Wear safety glasses in order to avoid eye damage.
Apply compressed air in order to hold the valves in place.
Install the valve rocker arm nut.
Use the
J 5892-D
in order to compress the valve spring.
Use the
J 38606
if clearance does not permit use of J 5892-D.
Remove the valve stem keys (1).
Carefully release the valve spring tension.
Remove the
J 5892-D
or the
J 38606
.
Remove the valve spring cap (2) and valve spring (3).
Remove the valve stem oil seal (4).
Installation Procedure
Select the proper valve stem oil seal for the specific valve guide. Refer to Cylinder Head Assemble.
Install the valve spring (3) and the valve spring cap (2).
Use the
J 5892-D
in order to compress the valve spring.
Use the
J 38606
if clearance does not permit use of
J 5892-D
.
Install the valve stem keys.
Use grease in order to hold the valve stem keys in place.
Carefully release the valve spring pressure, making sure the valve stem keys stay in place.
Remove the
J 5892-D
or the
J 38606
and the
J 23590
.
Install the spark plugs. Refer to
Spark Plug Replacement
in Engine Electrical.
Install the valve rocker arm covers. Refer to
Valve Rocker Arm Cover Replacement - Left Side
or
Valve Rocker Arm Cover Replacement - Right Side
.