Caterpillar — Coupling Alignment
Adjustments
From a Caterpillar service manual covering: G3600, G3606, G3608, G3612, G3616. Check it applies to your exact model before use.
Applies to: Caterpillar G3606, Caterpillar G3608, Caterpillar G3612, Caterpillar G3616, Caterpillar G3606 engine, Caterpillar G3608 engine, Caterpillar G3612 engine, Caterpillar G3616 engine
Procedure
- Perform face runout and bore runout alignment using laser tool or dial indicators.
- Measure face runout at 12:00-6:00 and 3:00-9:00 positions.
- Measure bore runout.
- Results must be within coupler manufacturer's recommendation or Caterpillar tolerance.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Face runout tolerance ±0.178 mm
- Bore runout tolerance ±0.127 mm
Full service-parts list: Caterpillar G3608 →
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.