Crankshaft Balancer Replacement
Special Tools
• | EN-50430 Pin - Balancer Locking |
• | EN-50431 Adaptor - Backlash Measurement |
For equivalent regional tools, refer to Special Tools
Removal Procedure
- Remove upper sump. Refer to Upper Sump Replacement .
- Remove and DISCARD the 4 balancer retaining bolts (2).
- Remove the balancer (1).
Installation Procedure
- Set the piston of cylinder 1 to TDC of combustion stroke.
- Install the EN-50430 locking pin (1) and lock the gear of the balancer (2).
- Install the balancer (1) to the lower crankcase.
Note: Install the balancer retaining bolts in a cross sequence.
- Install the 4 NEW balancer retaining bolts (2). Hand-tighten the bolts (2) so that the balancer (1) stays slidable without clearance on the lower crankcase.
- Remove the EN-50430 locking pin .
- Push the balancer (1) to the exhaust side of the engine.
- Install a dial gauge (2) at the inlet side of the balancer.
- Set the dial gauge to zero.
- Set screwdriver (1) into the exhaust side as shown and push the balancer (2) 1.1 mm (0.0433 in) to the inlet side.
Caution: Refer to Fastener Caution in the Preface section.
Caution: Refer to Torque-to-Yield Fastener Caution in the Preface section.
Note: Tighten the balancer retaining bolts in a cross sequence.
- Tighten the NEW balancer bolts to 20 N·m (15 lb ft).
- Check the balancer backlash specifications. Refer to Crankshaft Balancer Cleaning and Inspection .
- Tighten the balancer bolts to 50 N·m +90° (37 lb ft + 90°).
- Install the upper oil sump . Refer to Upper Sump Replacement .
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© Copyright Chevrolet. All rights reserved |