Thermo King SB-III 30 SR+, Manual

Page: 16 / 120

Maintenance Inspection Schedule (Rev. 04/02)
6
Engine (continued)
—
Change green or blue-green engine coolant every two years.
— Change ELC (red) engine coolant every 5 years or 12,000 hours.
Units equipped with ELC have an ELC nameplate on the
expansion tank (see page 32).
—
Test fuel injection nozzles at least every 10,000 hours.
Electrical
• • •
Inspect battery terminals and electrolyte level.
• • •
Inspect wire harness for damaged wires or connections.
• • • • Check operation of damper door (closes on defrost initiation and
opens on defrost termination).
•
Inspect alternator.
Refrigeration
• • • •
Check refrigerant level.
• • •
Check for proper suction pressure.
•
Check compressor oil level and condition.
• • •
Check throttling valve regulating pressure.
•
Check compressor efficiency and pump down refrigeration system.
Replace dehydrator and check discharge and suction pressure every
2 years.
Structural
• • • •
Visually inspect unit for fluid leaks.
• • • • Visually inspect unit for damaged, loose or broken parts (includes air
ducts and bulkheads).
• • •
Inspect tapered roller bearing fanshaft and idlers for leakage and
bearing wear (noise).
• • • Clean entire unit including condenser and evaporator coils and
defrost drains.
• • • Check all unit and fuel tank mounting bolts, brackets, lines, hoses,
etc.
• • •
Check evaporator damper door adjustment and operation.
Pretrip
Every
1,500
Hours
Every
3,000
Hours*
Annual/
4,500
Hours Inspect/Service These Items
*3,000 hours or two years, whichever occurs first.