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Figure #37B – DP6H models
Figure #37C – DQ6H models
Figure # - DT2H models
4.0 MAINTENANCE SCHEDULE
4.1 ROUTINE MAINTENANCE
NOTE: The following Routine Maintenance schedule
is based on an engine usage rate not exceeding 2
hours per month. For UL/FM engine models, also
refer to NFPA25.
LEGEND:
❑ Check
❖ Clean
➢ Replace
o Lubricate
WEEKLY
❑ Air Cleaner
❑ Battery
❑ Belts
❑ Coolant Hoses
❑ Coolant Leaks
❑ Coolant Levels and Condition
❑ Cooling Loop Valves Position
❑ Cooling Water Solenoid Valve
❑ Cooling Water Discharge
❑ Exhaust System
❑ Fuel Tank
❑ General Inspection
❑ Governor Run-Stop Control
❑ Jacket Water Heater
❑ Lubrication Oil Level
❑ Operating Gauges
❑ Remove Water from Fuel Filter
❑ Run Engine
❑ Warning Light
❖ Cooling Water Strainers
❖ Clean Radiator Core Debris (if equipped)
EVERY 6 MONTHS
❖ Batteries
❑ Battery Charging Alternator
❑ Belt tension
❑ Coolant Protection Level
❑ Driveshaft U-Joints
❑ Fuel Lines
EVERY 1 YEAR
❖ Air Cleaner
❖ Fuel Priming Pump Strainer
❑ Coolant Inhibitor
❑ Crankcase Vent System
o Driveshaft U-Joints
➢ Fuel & Oil Filters
❑ Heat Exchanger Electrode
➢ Lubricating Oil
❑ Mounting Isolators
❑ Wiring System
EVERY 2 YEARS
➢ Air Cleaner
➢ Batteries
➢ Belts
➢ Coolant Hoses
➢ Coolant
➢ Thermostat
➢ Remove Water Pump to Inspect Impeller and
Seal
EVERY 5 YEARS
➢ Torsional Coupling
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