DSG-423 GENERAL INFORMATION
01-24
Crankshaft Main Bearing Journal
Clearance
NOTE: Crankshaft main bearing journals must be within
specifications before checking journal clearance.
1. Remove the crankshaft main bearing caps and
bearings.
2. Lay a piece of Plastigage® across the face of each
crankshaft main surface.
NOTE: Do not turn the crankshaft while doing this
procedure.
3. Install and remove the crankshaft main bearing cap.
4. Verify the crankshaft journal clearance.
• If it is out of specification, replace as necessary
Bearing Inspection
Inspect bearings for the following defects. Possible
causes are shown:
• Cratering – fatigue failure (A)
• Spot polishing – improper seating (B)
• Scratching – dirty (C)
• Base exposed – poor lubrication (D)
• Both edges worn – journal damaged (E)
• One edge worn – journal tapered or bearing not
seated (F)
Special Tool(s)
Plastigage®
D81L-6002-B or Equivalent
Special Service Tools called for
by the procedures can be
obtained by calling:
1-800-ROTUNDA
(1-800-768-8632)
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