TM 5-4930-244-14
4-53. SYNCHRONIZING VALVE - REPLACE.
This Task Covers:
a. Removal
b. Installation
Initial Setup:
Tools Required
Tool Kit, General Mechanic's: Automotive (Appendix B, Section III, Item 1).
Materials/Parts Required
Teflon Tape (Appendix E, Section II, Item 7).
Rags, Wiping (Appendix E, Section II, Item 1).
Equipment Condition
Unit shut down and cool.
WARNING
·
Chock wheels when unit is not on a level surface. Unit could roll and cause
injury.
·
Compressed air may cause severe injury or death, if not used properly.
Make sure that air pressure in trailer brake system is completely drained
before maintenance.
a. Removal. (Refer to Figure 4-53).
(1)
Completely vent trailer air brake system pressure by opening drain valve. (para. 4-51).
(2)
Disconnect two air brake lines (1) from two elbows (3).
(3)
Unscrew two elbows (3) from ports of synchronizing valve (2).
(4)
Remove synchronizing valve (2) from hex nipple (4) in quick release and limiting valve (5).
(5)
Clean and Inspect synchronizing valve (2), two male elbows (3), and air brake lines (1).
b. Installation.
NOTE
Before installation wrap threads on elbows (3), hex nipple (4) with Teflon Tape.
(1)
Install synchronizing valve (2) onto hex nipple (4).
(2)
Install two elbows (3) into ports of synchronizing valve (2).
(3)
Connect two air brake lines (1) to synchronizing valve (2) fittings.
4-162
