3054 Engine Caterpillar

Illustration 1	g00323908
8T-0455 Liner Projection Tool Group (1) 1P-2403 Dial indicator (2) 1P-2402 Gauge body (3) 1P-5507 Gauge Block

Use the 8T-0455 Liner Projection Tool Group in order to check the depths of the inlet valve and the exhaust valve below the face of the cylinder head.

1. Use gauge block (3) in order to set the dial indicator (1) to zero.
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   Illustration 2	g00323909
   Valve Depth (1) 1P-2403 Dial Indicator (2) 1P-2402 Gauge Body

2. Measure the depth of the inlet valve and the exhaust valve below the cylinder head face. Use the gauge body (2) and the dial indicator (1) in order to measure the depth.

   Refer to the Specifications Module, "Cylinder Head Valves" for the minimum, the maximum, and the service wear limits for the valve depth below the cylinder head face. The minimum and the maximum limits are dimensions for a new engine.

   Service wear occurs on an engine which has been in operation. If the valve depth below the cylinder head face on a used engine exceeds the specification for service wear, the following items must be replaced:

   • Valves

   • Valve inserts

   If the valve depth below the cylinder head face on a used engine exceeds the specification for service wear, the cylinder head may also need to be replaced.