S10/T10 Blazer 4WD V6-4.3L VIN W (1997)
Balance Shaft: Description and Operation
The cast iron balance shaft is mounted in the crankcase above and in-line with the camshaft. A camshaft gear drives the gear attached to the balance
shaft. The front end of the balance shaft is supported by a ball-type bearing. The rear end of the balance shaft uses a sleeve-type bearing.