Specifications

Air System Preventive Maintenance
– 192 – Y53-6008A
Medium Duty (R05/09)
Scheduled Maintenance
Use Table 5, ”Air System Scheduled Maintenance,” to
schedule service operations and air system tests.
Table 5 Air System Scheduled Maintenance
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)
ANNUALLY
(100,000 mi)
(160,000 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
•