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TM 9-2320-364-20-2
2-1868
15. SERVICE BRAKES ON AXLES NO. 1 AND NO. 2 DO NOT RELEASE.
INITIAL SETUP
1.
Do all brakes on both Axles
fail to release?
Go to Step 4 of this
Fault.
START
YES
NO
Nothing.
Brakes on Axles No. 1 and
No. 2 fail to release.
Air lines crimped.
Service relay valve No. 1
faulty.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If only one set of brakes on
Axles No. 1 and No. 2 fail to
release, problem is in air
chamber or brakes components.
2-24. BRAKES SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanics: Automotive
(Item 74, Appendix G)
Pressure Test Kit (Item 50, Appendix G)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
WARNING
Personnel Required
Two
NOTE
The following troubleshooting procedures cover one set of brakes on Axles No. 1 and No. 2, but they
apply to all four sets of brakes.
Read WARNING
on Page 2-1869
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