Kohler 8-32EOZD Service page 42

Troubleshooting Chart, continued
Problem Possible Cause
Generator set
Air cleaner clogged
operates
Governor adjustment incorrect
erratically erratically
Inadequate cooling (hot engine
only)
Carbon buildup in engine
Engine valves not seating
correctly
Generator set
Air intake restriction, inadequate
lacks power
cooling
Generator overloaded
Engine not running at rated rpm
Engine power loss
Governor malfunction or
misadjustment
Generator set
Inadequate cooling
overheats
Air cleaner clogged
Generator overloaded
Low output or p
excessive i
Incorrect controller configuration
drop in
voltage voltage
Incorrect controller voltage
settings
Alternator or control system
SCR module
Controller
Rotor (open, grounded, or shorted
windings)
Stator (open, grounded, or
shorted windings)
Low engine speed causing
voltage roll-off
42 Section 6 Troubleshooting
Corrective Action
Replace element.
Adjust governor stability.
Inspect air inlet and outlet.
Clean cylinder head.
Inspect valves and valve seats.
Inspect air intakes and exhaust for
obstructions.
Check the air cleaner.
Reduce load.
Check controller settings for unit
configuration (UC) and engine
type (EC).
Adjust governor speed.
Refer to the Engine Service
Manual for troubleshooting and
repair instructions.
Test/readjust governor.
Inspect cooling system for
obstructions.
Replace element.
Reduce load.
Check and adjust the controller
configuration parameters.
Check and adjust the controller
voltage settings.
Perform separate excitation
procedure to isolate problem to
the alternator or the control
system.
Check wiring and connections to
the SCR module.
Check the auxiliary winding fuse
F1 (lead 55).
Replace SCR module and test
voltage.
Check the controller settings.
Check the controller fuse, wiring
and connections.
Before replacing the controller,
replace the SCR module and test
voltage.
Test and/or replace.
Test and/or replace.
Check system voltage/frequency
(UU) and engine type (EC)
parameters.
Adjust the engine governor speed.
Troubleshoot the engine.
Reference
Section 3
Section 4.4
—
Engine S/M
Engine S/M
Section 3
Generator Set I/M
Section 7.5
Section 4.4
Engine S/M
Section 4.4
—
Section 3
Generator Set I/M
Section 7.5
Section 7.5.3
Section 8.2
Section 7.5
Section 7.7
Section 7.5
Section 7.7
Section 7.11
Section 8.6
Section 8.7
Section 7.5
Section 4.4
Engine S/M
TP-6255 7/06