Chevrolet Equinox Service Manual: Water Pump and Balance Shaft Chain and Sprocket Cleaning and Inspection Engine Block Cylinder Block Balance Shaft

Inspect the balance shaft drive chain guides-(3,5, 8) for cracking or wear.Replace the balance shaft drive chain guides if wear exceeds1.12-mm (0.045-in) depth on the chain guidesurface.Inspect the balance shaft drive chain tensioner guide shoefor wear.

Replace the balance shaft drive chain tensioner guide shoe ifwear exceeds 1.12-mm (0.045-in) depth on thechain guide surface.

Inspect the balance shaft drive chain-(7) andsprockets-(2, 4) for wear.Inspect the crankshaft sprocket-(6) faces forsigns of movement.Inspect the alignment notch in the balance shaft for crackingor damage.Inspect the water pump-(1), crankshaft, andbalance shaft sprocket teeth and chain for signs of excessive wear,chipping, or seizure of the balance shaft drive chain links.Inspect the timing chain tensioner-(9) for damageor wear.