operators_manual

Table Of Contents
Every 120,000 mi / 192,000 km / Annually
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Heating and Air Conditioning - Heater and Air Conditioner
Full operational and diagnostic check. (Refer to Heater and Air Conditioner Maintenance on page 278 for maintenance
instructions.)
Heating and Air Conditioning - Sleeper Air Filter
Inspect and clean, replace if necessary. (Refer to Sleeper HVAC Air Filter on page 280 for maintenance instructions.)
Heating and Air Conditioning - Recirculation Cab Air Filter (ON HIGHWAY)
Please contact an authorized dealer when the service interval is required to inspect the cabin recirculation air filter. (Refer to
Replace the Recirculation Air Filter on page 280 for maintenance instructions.)
Heating and Air Conditioning - Recirculation Cab Air Filter (OFF-HIGHWAY)
Please contact an authorized dealer when the service interval is required to inspect the cabin recirculation air filter. (Refer to
Replace the Recirculation Air Filter on page 280 for maintenance instructions.)
Air - Air Dryer (OFF HIGHWAY)
Replace cartridge. (Refer to Air Dryer Maintenance on page 236 for maintenance instructions.)
Every 240,000 mi / 384,000
km
13
Ensure that all maintenance intervals leading up to this point are repeated during this interval prior to the completion of
MAINTENANCE - Every 240,000 mi / 384,000 km
those listed here.
Y53-6110-1A1 (01/21) 229
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