Kohler 10RMOY, 15RMOY, 15RMY, 15ROY, 17.5ROY, 22.5-47.5ROZ, 22.5RZ, 32.5RZ Industrial Generator Sets Service Manual (tp5074)

These Kohler industrial generator sets usually sit in plant rooms or outdoors on pads, backing up critical loads when the main power drops. This service manual is what I’d pull out when I need to prove what’s actually failed before hanging parts. If a unit won’t carry load after a storm, I’d use this book to trace through the control, fuel, and mechanical systems in a logical order, so we isolate whether it’s a sensor, governor issue, or something deeper in the engine or alternator before we start tearing things apart.

Applications & Use Cases

• Track hard-start or no-start issues step by step, checking each circuit and component in a sensible sequence.
• Verify shutdown causes instead of guessing—use it to confirm if trips are really overtemp, low oil, or false signals.
• Guide disassembly and reassembly of engine, alternator, or control components so everything goes back aligned and sealed correctly.
• Adjust linkages and controls (governor, throttle, actuators) to get stable frequency and voltage under load.
• Support scheduled overhauls, helping you inspect wear points and test components before they fail in service.

FAQ

Q: Can I keep this manual on a tablet in the field?

A: Yes, it’s practical to use digitally; you can zoom diagrams and search text while working beside the generator.

Q: Is it worth printing sections of this manual?

A: Many techs print the procedures they’re doing that day, so they can mark notes, keep pages clean in sheet protectors, and tape wiring diagrams near the unit.

Safety Note

Always lock out the generator and verify it cannot start automatically before opening any covers or disconnecting components.

Kohler 10, 15RMOY, 15RMY, 15, 17.5ROY, 22.5-47.5ROZ, 22.5, 32.5RZ Industrial Generator Sets Index:

SUBJECT
Introduction
Service Assistance
Section 1.
Operation
Prestart Checklist .
Preheat Feature .
Basic and Meter Box Models .
NFPA (Hospital Code) Model .
Section 2.
Controller Troubleshooting
Basic and Meter Box
NFPA (Hospital code)

Generator Troubleshooting
Static Models (R Y)
Brushless Models (RZ)
ection 4.
Generator Disassembly-Reassembly
Controls
Static Models (R Y)
Disassembly
Static Models (RY)
Reassembly
Brushless Models (RZ) — Disassembly
Brushless Models (RZ) — Reassembly
ection 5.
Wiring Diagrams

Kohler