Carrier Extra XT - Unit Maintenance Schedule

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UNIT MAINTENANCE SCHEDULE
For the most reliable operation and for maximum life, your unit
requires regular maintenance. This includes oil and filter changes,
fuel and air filter replacement, coolant replacement. Maintenance
should be performed on the following schedule:
SERVICE
Every 1500 Hours
(TV engine)
Every 2000 Hours
(DI engine)
Yearly
(ALL engines)
D Drain the engine oil and replace oil filter.*
D Check engine cooling system.
D Check air cleaner.
D Check all bolts, screws and unit mounting
bolts for tightness. Tighten as required.
D Check all belts.
D Replace fuel filter.
D Clean fuel pump filter.
D Check battery terminals and fluid level.
D Check compressor oil level.
D Check alternator brushes.
D Check engine thermostat.
D Check defrost:
- Check defrost air switch calibration
- Check timer setting and function
- Check refrigerant control valves
- Defrost ends automatically
- Water drains from evaporator
D Clean radiator/condenser.
D Check engine speed under load
D Pre-Trip Inspection.
Every 3000 Hours D Check alternator.
D Clean and adjust fuel injectors.
D Clean crankcase breather.
D Pre-Trip Inspection.
Every 6000 hours D Change anti-freeze.**
D Check and adjust rocker arms.
D Pre-Trip Inspection.