Crankshaft Main Bearing Clearance Measurement
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the bolts (108 and 109) caps (103) and lower bearings (106). Refer to Crankshaft and Bearings Removal .
- Clean each main journal and bearing half with a clean shop towel.
- Place 1 strip of plastic gaging material across each main journal.
- Install the bearings, caps and bolts. Refer to Crankshaft and Bearings Installation .
- Remove the bolts, bearing caps and bearings. Refer to Crankshaft and Bearings Removal .
- Measure the widest part of the plastic gaging material (1).
- If the measurement is too wide or too narrow, remove the crankshaft and the bearing upper half. Install a new bearing assembly of the same color and measure again. Do not file, shim or scrape the bearings or caps to adjust the clearance.
- If the plastic gaging measurement is still incorrect, try the next larger or smaller bearing. If the correct clearances cannot be obtained, replace the crankshaft assembly.
Specification:
- Main bearing-to-journal clearance - new: 0.02-0.044 mm (0.0008-0.0017 in)
- Main bearing-to-journal clearance - service limit: 0.05 mm (0.002 in)
IMPORTANT:
If the bearing clearance measurement procedure is to performed in-vehicle, the crankshaft must be supported upward with a jack. The weight of the crankshaft and drive plate will flatten the plastic gaging material and contribute to an inaccurate measurement.