4-171. AIR LINES AND PIPING REPLACEMENT.
This task covers:
General Mechanics Tool Kit
Air Lines and Piping as required (Appendix E
General Safety Instructions
Pipe Sealant (Appendix D, Item 47)
Transmission in (N) neutral.
Parking brake set.
Battery selector switch OFF.
Para. Condition Description
4-173 System Bled
All hoses and fittings are threaded. If needed,
use a wrench to remove.
Disconnect connections to air tanks and valves.
Disconnect any other connections to air tanks and
c. Remove air lines from truck.
Apply pipe sealant (Appendix D, Item 47) to all
exterior threads on the hose and fittings.
Install air lines into truck and connect all hoses and
Check system for leaks or loose connections.
Charge air brake system (paragraph 4-173).
Air Compressor Governor
Low Pressure switch
10 Safety Valve
11 Quick Release Valve
12 Brake Valve
13 Stoplight Switch
14 Spring Brake Control Valve
15 Inversion Valve
16 Two-Way Check Valve
PRIMARY ;SERVICCE SYSTEM
SECONDARY SERVICE SYSTEM
PARKING ;BRAKE SYSTEM