4-22. AIR SYSTEM - Continued
Note position of all fittings and valves and remove from tank
Check air tank for dents or cracks. Replace as required. Air tanks cannot be repaired by welding except
Using a shop supply, pressurize the tank with air, submerse in water and check for any leaks. Replace
fittings as required.
Coat all pipe threads with pipe sealant (item 22, Appendix E) and refit valves and fitting as noted in
Raise air tank into position against clamps. Be sure air tank draincock is at the lowest point.
Install clamps (3) that were removed, or loosened on frame using capscrews (2) and nuts (4)
Install capscrews (1), washers (5), and nuts (6) Tighten securely
Coat all pipe threads with pipe sealant (item 22, Appendix E) and install air lines removed in step 2 of
Reconnect batteries and start truck. When relevant air reservoir is charged, brush all air connections with
soap solution. Remake or replace all leaking joints.