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21
Maintenance Inspection Schedule
A closely followed maintenance program will
help to keep your Thermo King unit in top
operating condition. The following general
schedule is provided to assist in monitoring that
maintenance.
Pre
trip
750
Hours
Annual/
3,000
Hours
Inspect/Service These Items
NOTE: The 750 hour maintenance interval may be extended to 1,000 hours
or 1 year when equipped with a bypass oil filter.
Microprocessor
•
Run pretrip test (see “Pretrip Test” in the Operating Manual).
Engine
•
Check fuel supply.
•
•
Check engine oil level.
•
•
•
Check engine coolant level.
CAUTION: Do not remove radiator cap while coolant is hot.
•
•
Inspect belts for condition and proper tension.
•
•
Check engine oil pressure hot, on high speed. Minimum 40 psig (276 kPa) (oil
pressure gauge option).
•
•
•
Listen for unusual noises, vibrations, etc.
•
Change engine oil and filters (hot).
•
Change oil bath air cleaner element, replace dry type element, clean and service
crankcase breather and check air cleaner hose for damage.
•
Change fuel filter.
•
Drain water from fuel tank and check vent.
•
Inspect/clean fuel sediment bowl and electric fuel pump filter.
•
Check and adjust engine speeds (high and low speed).
•
Check condition of engine mounts.
•
Maintain year round antifreeze protection at –30 F (–34 C).
—
Change engine coolant every 2 years.
Electrical
•
Check defrost initiation and termination.
•
Check thermostat cycle sequence.
•
Inspect battery terminals and electrolyte level.
•
Check operation of protection shutdown circuits.
•
Inspect electrical contacts for pitting or corrosion.
•
Inspect wire harness for damaged wires or connections.
•
Check calibration of return and discharge air sensor, and optional air sensors, in 32 F
(0 C) ice water.
•
Check air switch setting.
•
Inspect electric motor bearings.*
•
Inspect DC (battery charging) alternator bearings* and brushes.
Summary of Contents for 914970
Page 3: ...3...
Page 10: ...Table of Contents 10...
Page 40: ...Operating Instructions 40...
Page 82: ...Electronic Controls 82...
Page 92: ...Electrical Maintenance 92...
Page 124: ...Refrigeration Maintenance 124...
Page 140: ...Hilliard Clutch Maintenance 140...
Page 160: ...Refrigeration Diagrams 160...
Page 163: ...Index 163 W wiring 85 wiring diagrams 165...
Page 164: ...Index 164...
Page 166: ...Wiring and Schematic Diagrams Index 166...
Page 167: ...167 Cab Control RD Wiring Diagram...
Page 168: ...168 RD w o Thermostat Cab Control Schematic...
Page 169: ...169 RD Cab Box Wiring Diagram...
Page 170: ...170 RD Cab Control w Thermostat Schematic Diagram...
Page 171: ...171 RD 50 STD 3 Phase Wiring Diagram Page 1 of 2...
Page 172: ...172 RD 50 STD 3 Phase Wiring Diagram Page 2 of 2...
Page 173: ...173 RD 50 STD 3 Phase Schematic Diagram Page 1 of 2...
Page 174: ...174 RD 50 STD 3 Phase Schematic Diagram Page 2 of 2...
Page 175: ...175 RD 30 STD Wiring Diagram Page 1 of 2...
Page 176: ...176 RD 30 STD Wiring Diagram Page 2 of 2...
Page 177: ...177 RD 30 STD Schematic Diagram Page 1 of 2...
Page 178: ...178 RD 30 STD Schematic Diagram Page 2 of 2...
Page 179: ...179 RD 30 C S Wiring Diagram Page 1 of 2...
Page 180: ...180 RD 30 C S Wiring Diagram Page 2 of 2...
Page 181: ...181 RD w CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 182: ...182 RD w CYCLE SENTRY Schematic Diagram Page 2 of 2...
Page 183: ...183 RD 50 C S 3 Phase Wiring Diagram Page 1 of 2...
Page 184: ...184 RD 50 C S 3 Phase Wiring Diagram Page 2 of 2...
Page 185: ...185 RD w CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 186: ...186 RD w CYCLE SENTRY Schematic Diagram Page 2 of 2...