Caterpillar SR4B — Exciter Field Static Flashing
Repair & overhaul
For the Caterpillar SR4B, from the Caterpillar service manual.
Applies to: Caterpillar SR4B
Before you start
- Only for self-excited generators
- Do not flash PMPE generators
Procedure
- Stop the engine
- Disconnect wires F1 GEN and F2 GEN from voltage regulator
- Connect positive cable of 6 VDC source to wire F1 GEN
- Momentarily apply negative cable to wire F2 GEN (2-3 times)
- Do not hold negative cable longer than 1-2 seconds each time
- Reconnect wires F1 and F2 to voltage regulator
Tools required
- 6 VDC Battery Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 6 VDC source
- Brief 1-2 second contacts
Full service-parts list: Caterpillar SR4B →
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.