Peterbilt Medium Duty Trucks Operator's Manual after 1-07

Preventive Maintenance
High Frequency Vibration: Vibration may indicate turbo
rotor imbalance. Have your Peterbilt Dealer or Authorized
Service Center investigate this immediately. If you detect any
deficiencies, take the vehicle to an Authorized Service Center
for servicing. Delay could lead to severe and expensive
damage to your vehicle.
Air System
Service the air cleaner periodically. If the vehicle operates in
areas with heavy dust, maintenance should be more frequent.
Follow the instructions below to remove the air filter.
AIR INTAKE
ASSEMBLY
Air Filter Replacement
Service the filter elements when the Air Cleaner Restriction
gauge (option) locks in the extreme High position. Have the
element serviced at a Peterbilt Dealer or Authorized Service
Center. Paper elements require care and proper handling,
because they are critical to engine service life.
02603
Air Intake Assembly
Medium Duty (R10/06) Y53-6008 – 167 –