Cleaning and Inspection Procedure - Conditional
The following cleaning and inspection and/or overhaul steps are ONLY to be performed as determined necessary based on the condition of the part being removed with the intention of reinstallation. The labor time to perform any of these steps is not included in the base labor time and if required would need to be documented and submitted as Other Labor Hours for warranty claim reimbursement. A description of the repairs performed must be documented in the technician correction comments.
Clean the crankshaft balancer (1) in solvent.
- Clean the belt grooves of all dirt or debris with a wire brush.
- Dry the crankshaft balancer (1) with compressed air.
- Inspect the crankshaft balancer (1) for the following conditions:
- Worn, grooved, or damaged hub seal surface.
- A crankshaft balancer (1) hub seal surface with excessive scoring, grooves, rust or other damage must be replaced.
- Minor imperfections on the crankshaft balancer (1) hub seal surface may be removed with polishing compound or fine grade emery cloth.
- Dirty or damaged belt grooves:
The crankshaft balancer (1) belt grooves should be free of any nicks, gouges, or other damage that may not allow the belt to track properly.
- Minor imperfections may be removed with a fine file.
- Worn, chunking, or deteriorated rubber between the hub and pulley.
NOTE:In order for the belt to track properly, the belt grooves should be free of all dirt or debris.
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Courtesy of GENERAL MOTORS COMPANY
Clean the cover in solvent. Remove the sealant from the front cover to the oil pan surface.
- Dry the cover with compressed air.
- Inspect the gasket sealing surfaces (1) for excessive scratches or gouging.
- Inspect the threaded bolt holes (2, 3, 5) for damaged threads or debris.
- Inspect the camshaft position sensor pass-thru hole and sealing surface (4) for excessive scratches or gouging.
- Inspect the oil flow control valve connector pass-thru hole and sealing surface (6) for excessive scratches or gouging.