Check Crankshaft Bearing Clearance (With Plastigage)

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Install crankshaft with the 5 upper crankshaft bearing shells at the engine block.
NOTE:
Do not rotate the crankshaft.

Lay on 5 times plastigage (flexible plastic thread) axially over the entire width of the crankshaft bearing journal (1).
Install the 5 lower crankshaft bearing shells.
Install the lower crankcase (1).

NOTE:

Use the old bolts for this step.

Install the 10 lower crankcase bolts (2).
Fig 1: Lower Crankshaft Bolt Tightening Sequence

CAUTION:
Refer to Fastener Caution .

CAUTION:
Refer to Torque-to-Yield Fastener Caution .

Tighten the 10 lower crankshaft bolts in the sequence as shown, use the EN-45059 meter.
1. First pass tighten to 50 N.m (37 lb ft).
2. Second pass to 120 degrees.
Install the 2 long lower crankcase bolts (1) and tighten to 25 N.m (18 lb ft).
Install the 8 short lower crankcase bolts (2) and tighten to 25 N.m (18 lb ft).
Remove the crankcase.
Remove the 2 long lower crankcase bolts (1).
Remove the 8 short lower crankcase bolts (2).
Fig 2: Lower Crankcase Bolt Loosening Sequence

Loosen the 10 lower crankcase bolts in the sequence as shown.
Remove and DISCARD the 10 lower crankcase bolts (2).
Loose the lower crankcase (1) from the engine block, use a suitable tool.
Remove the lower crankcase (1).
NOTE:
When reading the value, do not confuse millimeters and inches on the measuring scale.

Measure the crankshaft bearing play.
- Compare the width of the flattened plastic thread (1) to the measuring scale (2).
- Permissible crankshaft bearing play, refer to Engine Mechanical Specifications .