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Home›Repair guides›Kohler›Generator Disassembly - Brushless Models (RZ)

Kohler — Generator Disassembly - Brushless Models (RZ)

Repair & overhaul

From a Kohler service manual covering: 10/15RMOY, 15/17.5ROY, 15RMY, 22.5-47.5ROZ, 22.5/32.5RZ. Check it applies to your exact model before use.

Applies to: Kohler 15RMY

Before you start

  • Disconnect and remove starting batteries from work area to prevent fire hazard.
  • Any cranes, hoists, or other devices must be rated for weight of generator set.

Procedure

  1. Remove end panel and enclosure side panels.
  2. Wrap and disconnect stator lead connections; pull back through current transformers (if equipped).
  3. Remove black plastic speed sensor from end bracket (NFPA models only).
  4. Disconnect stator from steel mounting frame by removing bolts from vibro-mounts.
  5. Cradle stator with lifting straps or attach lifting hooks to holes in stator frame. Hoist generator off vibro-mounts.
  6. Place wood block(s) under flywheel housing to support engine; lower.
  7. Remove generator fan guard.
  8. Remove bolts mounting generator adapter to flywheel housing.
  9. Remove nuts holding fan and drive discs to flywheel.
  10. Guide generator fan off studs and remove spacers; work drive discs over studs to separate generator from engine.
  11. Loosen stator-to-end bracket and stator-to-adapter attachment bolts to hand-tight (47.5kW); loosen four overbolts to hand-tight (all other models).
  12. Hoist generator assembly (end bracket down) into a vertical position; rest on wood blocks.
  13. Remove eight drive disc bolts; lift away drive discs and generator fan.
  14. Fasten lifting eye and hoist hook to rotor flange; hoist rotor to remove.
  15. Finish removing attachment bolts and overbolts; remove adapter; hoist stator away from end bracket and exciter field. Remove four J-bolts and exciter field.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Kohler 15RMY →

Source: Kohler 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.

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