TM 5-3810-307-24-1-1
TRAILER AIR BRAKE SYSTEM COMPONENTS
Removal
a.
Remove gladhand as follows (typical):
(1)
Relieve system air pressure by draining supply (depress pin in center of automatic drain valve),
secondary, and auxiliary air reservoirs.
WARNING
There may be residual pressure in air lines after air reservoirs are
drained.
Wear eye protection when disconnecting air lines or
components to prevent injury.
(2)
Unscrew gladhand (1, Figure 2-7-15) from nipple (7).
(3)
If necessary, remove air line (2) from elbow (3), and elbow (3) from connector (6).
(4)
If necessary, remove nut (4), lockwasher (5), and connector (6) from vehicle frame.
(5)
If necessary, remove nipple (7) from connector (6).
b.
Remove tractor protection valve as follows:
(1)
Relieve system air pressure.
(2)
Tag and disconnect air lines (8 and 9, Figure 2-7-15) from elbows (16 and 17).
(3)
Tag and disconnect air lines (10 and 11) from elbows (18 and 19).
(4)
Remove nuts (12), lockwashers (13), tractor protection valve (14), and washers (15) from mounting
studs.
(5)
If necessary, remove elbows (16, 17, 18, and 19) from valve (14).
Installation
a.
Install tractor protection valve as follows:
(1)
If removed, install elbows (16, 17, 18, and 19, Figure 2-7-15) on tractor protection valve (14).
(2)
Position washers (15) on mounting studs, and install tractor protection valve (14) on studs with
lockwashers (13) and nuts (12).
(3)
Connect air lines (10 and 11) to elbows (18 and 19).
(4)
Connect air lines (8 and 9) to elbows (16 and 17).
b.
Install gladhand as follows:
(1)
If removed, install nipple (7, Figure 2-7-15) in connector (6).
(2)
If removed, install connector (6) in vehicle frame with lockwasher (5) and nut (4).
(3)
If removed, install elbow (3) in connector (6) and connect air line (2) to elbow (3).
(4)
Install gladhand (1) on nipple (7).
2-7-36 C-1
