Peterbilt 387 - Cab Heater-Air Conditioner

CAB HEATER-AIR CONDITIONER PART 8: MAINTENANCE AND SERVICE
– 192 – Y53-6007 (R10/06)
Cab Heater-Air Conditioner
The combination heater-air conditioner provides comfort
for those in the cab through accurate control of the cab
environment in all weather conditions. Regular attention
will help you keep your unit running well.
NOTES:Keep the engine exhaust system and the
vehicle’s cab/sleeper ventilation system properly
maintained. It is recommended that the vehicle’s
exhaust system and cab/sleeper be inspected
• by a competent technician every 15,000 miles
• whenever a change is noticed in the sound of
the exhaust system
• whenever the exhaust system, underbody, cab
or sleeper is damaged
NOTES:Allow for the proper operation of the vehi-
cle ventilation system:
• Keep the inlet grille at the base of the wind-
shield clear of snow, ice, leaves, and other
obstructions at all times.
• Keep the exhaust pipe area clear to help
reduce the buildup of exhaust gases under the
vehicle.
Perform the following checks every 3 months or 30,000
miles / 48,000 km, whichever occurs first:
Heater
• Check all heater controls for full-range operation.
• Check hoses, connections, and heater core for condi-
tion and leaks.
• Check the drain pan of the fresh air vent for trapped
water before assuming that there is a leak in the heat
-
ing system.
• If the heater core is leaking, take the vehicle to a
Peterbilt dealer for proper heater service or repair.