21503-3 Camshaft Timing, Checking

See also:

Camshaft

You must read and understand the precautions and guidelines in Service Information, group 20,"General Safety Practices, Engine" before performing this procedure. If you are not properly trainedand certified in this procedure, ask your supervisor for training before you perform it.

Special tools: 9996956

1

Perform a valve lift check on the intake valves for cylinder 1 to check that the camshaft is correctlyinstalled.

Chassis ID Path21/Repair/VN, ENG-VE12, ENG-GEN6/Camshaft Timing, Checking

Model IdentityVN 122334286

Publishing Date Operation No.Wednesday, February 11, 2009 21503-3

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© Copyright Volvo Group North AmericaThe information contained herein is current at the time of its original distribution, but is subject to change. The reader is advised that printed copies are uncontrolled.

IMPACT 3.0 Friday, March 25, 2011

Before adjusting, ensure that the camshaft is set to TDC.

Temporarily adjust the no. 1 intake valve to zero clearance.

Position a dial indicator toward the intake valve caliper for cylinder 1. Pretension the dial indicatorand reset to 0.

2

Using tool 9996956, turn engine in direction of rotation to 6° ATDC on the flywheel. The valve mustopen 1.6 ± 0.3 mm (0.063 ± 0.001 in.).

Special tools: 9996956

3After completing the check, rotate the engine until no. 1 is between markings on the front bearingcap. Adjust valve clearance to 0.2 mm (0.008 in.).

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© Copyright Volvo Group North AmericaThe information contained herein is current at the time of its original distribution, but is subject to change. The reader is advised that printed copies are uncontrolled.

IMPACT 3.0 Friday, March 25, 2011