Crankshaft Main Bearing Journal - Clearance

WARNING: This page is about a different variant/trim than selected.

NOTE: Crankshaft main bearing journals must be within specifications before checking journal clearance.

Remove the crankshaft main bearing caps and crankshaft main bearing.
Lay a piece of Plastigage across the face of each crankshaft main bearing surface.

Fig 1: Crankshaft Main Bearing Surface With Plastigage
Courtesy of MAZDA MOTORS CORP.

NOTE: Do not turn the crankshaft while carrying out this procedure.

Fig 2: Measuring Plastigage

Courtesy of MAZDA MOTORS CORP.

Install and remove the crankshaft main bearing cap.
Verify the crankshaft journal clearance. Refer to SPECIFICATIONS .
- If it is out of specification, install new components as necessary.