
Clean the crankshaft balancer-(1).Clean the belt grooves of all dirt or debris with a wirebrush.
Warning:Refer toSafety Glasses Warning.
Dry the crankshaft balancer with compressed air.Inspect the crankshaft balancer for the following:Worn, grooved, or damaged hub seal surfaceA crankshaft balancer hub seal surface with excessivescoring, grooves, rust or other damage must be replaced.Note:In order for the belt to track properly, the belt groovesshould be free of all dirt or debris.
Dirty or damaged belt groovesThe balancer belt grooves should be free of any nicks,gouges, or other damage that may not allow the belt to trackproperly.
Minor imperfections may be removed with a fine file.Worn, chunking or deteriorated rubber between the hub andpulley
Balance Shaft Cleaning and Inspection Engine Block Cylinder Block Balance Shaft
Intake Manifold Cleaning and Inspection (LAF, LEA, or LUK) Intake and Forced Induction Intake Manifold#03-00-91-001F: Vibration Analysis Worksheet - (Feb 19, 2013)
Subject:Vibration Analysis WorksheetModels: 2014 and Prior GM Passenger Cars and Trucks This bulletin is being revised to add models years and to change the location of theEVA readings requested. Please discard Corporate Bulletin Number 03-00-91-001E (Section00 – General Information).When diag ...