Caterpillar — Generator - Dry
Maintenance · Generator windings
From a Caterpillar owner's manual covering: 3456, C1G1-Up, C2T1-Up, C3G1-Up, C4G1-Up, SR4B. Check it applies to your exact model before use.
Applies to: Caterpillar SR4B
Before you start
- High voltage hazard
Procedure
- Select drying method: self-circulating air, oven, or controlled current.
- Self-circulating: blow hot air into air intake and run engine.
- Oven: disconnect AVR and place generator in forced air oven 24 hours at 110 °C (230 °F).
- Controlled current: disconnect AVR and short three output terminals.
- Connect 24 VDC power source with rheostat to exciter field.
- Operate generator at rated speed and adjust current to rated output.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Oven 24 hours at 110 °C (230 °F)
- Maximum 6 Amp per square millimeter
Full service-parts list: Caterpillar SR4B →
Source: Caterpillar owner's 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.