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LP Engine G430(3.0L) Base Engine Service Procedure
Measuring Camshaft Lobe Lift
Tools Required
• J 8520 Camshaft Lobe Lift Indicator
1. Position the J 8520 with the ball socket adapter on
the valve pushrod. Be sure that the valve pushrod is
in the valve lifter socket.
2. Slowly rotate the crankshaft until the valve lifter
roller is on the heel of the cam lobe. The valve
pushrod will be in its lowest position.
3. Set the J 8520 on zero.
4. Slowly rotate the crankshaft until the valve pushrod
is raised fully.
5. Compare the total lift shown on the J 8520 with the
specifications. Refer to Engine Mechanical
Specifications.
6. Remove the J 8520.
2. Remove the valve pushrods.
3. Place the following parts in a rack so that they can
be reinstalled in their original locations:
• The valve rocker arms.
• The valve rocker arm balls.
• The valve pushrods.
VE023-3L
VE022-3L
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