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

Preventive Maintenance
Scheduled Maintenance
Table 6 Air System Scheduled Maintenance
Air System
Use Table 6, ”Air System Scheduled Maintenance,” to schedule
service operations and air system tests.
MAXIMUM INTERVALS
TEST
EACH WEEK
EACH MONTH
(10,000 mi) (16,000
km)
THREE MONTHS
(25,000 mi) (40,000
km)
SIX MONTHS
(50,000 mi) (80,000
km)
Air Compressor
•
Air Governor
•
System Leakage
•
Dual Air Brake Treadle Valve • – or – •
Hand–Operated Trailer Brake Valve • – or – •
Tractor Parking Valve
•
Parking Brake Valve
•
Trailer Air Supply
•
Tractor Protection Valves
Relay Valve
Spring Brake Inversion Valve
Automatic Limiting Valve
Single Check Valves
Double Check Valves
Stop Light Switch
Low–Pressure Wig Wag
Low–Pressure Switch
Automatic Drain Valve
Safety Valve
Quick Release Valve
Manual Drain Valve
•
•
•
•
•
•
•
•
ANNUALLY
(100,000 mi)
(160,000 km)
•
•
•
•
•
Medium Duty (R10/06) Y53-6008 – 161 –