Camshaft & Bearings (In Block): Inspection: Camshaft

Fig 1: Camshaft - Inspection

Courtesy of CHRYSLER LLC

1 - UNWORN AREA

2 - ACTUAL WEAR

3 - BEARING JOURNAL

4 - LOBE

5 - WEAR ZONE

1. Check the cam lobes (4) and bearing surfaces (3) for abnormal wear and damage. Replace camshaft as required.
   NOTE: If camshaft is replaced due to lobe wear or damage, always replace the lifters.
2. Measure the lobe (2) actual wear (unworn area - wear zone = actual wear) and replace camshaft if out of limit. Standard value is 0.0254 mm (0.001 in.), wear limit  is 0.254 mm (0.010 in.).