TP-6694 7/18 65Section 3 Scheduled Maintenance
Service Schedule, continued
Action
System—Component Visually Inspect Check Change Clean Test Interval
AC Electrical System
Controller lamp test X R Weekly
General Inspection X Weekly
Circuit breakers, fuses[
X X R X X Monthly
Wire abrasions where subject to motion X X Quarterly
Safety and alarm operation X X Six Months
Tighten control and power wiring connections X Yearly
Transfer switch main contacts[
X X Yearly
Voltage-sensing device/relay adjustment[ D D
Yearly
Wire-cable insulation breakdown X X
3 Years or
500 Hrs.
Engine and Mounting
General inspection
D
Weekly
Governor operation, lubricate moving parts
D D
Monthly
Air cleaner service
D D
Six Months
Choke, carburetor adjustment
D
Six Months
Governor oil (mechanical governor only)
D
Yearly
Ignition components
D D
Yearly
Injector pump and injector flow rate, pressure, spray pattern
D D
Yearly
Valve clearance
D
3 Years or
500 Hrs.
Bolt torque
D D
3 Years or
500 Hrs.
Remote Control System, etc.
Compartment condition X X Weekly
Remote control X Monthly
Run generator set X Monthly
Alternator
General inspection X Weekly
Rotor and stator X X Yearly
Bearing condition X X R Yearly
Exciter X X X Yearly
Voltage regulator X X X Yearly
Measure and record resistance readings of windings with
insulation tester (Meggerr, with SCR assembly or rectifier
disconnected)
X Yearly
Blow dust out of alternator* X
D
2 Years or
300 Hrs.
General Condition of Equipment
Any condition of vibration, leakage, noise, temperature, or
deterioration
X X X Weekly
Ensure that system is set for automatic operation X Weekly
Interior of equipment room or outdoor weather housing X X Weekly
D Follow procedures and frequencies indicated in the engine manufacturer’s maintenance manual.
If not indicated, follow this service schedule. Some items may not apply to all generator sets.
R Replace as necessary.
X Action.
* Service more frequently if operated in dusty areas.
[ Do not break manufacturer’s seals or internally inspect these devices.
Meggerr is a registered trademark of Biddle Instruments.
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