FIELD MAINTENANCE
ALL PARKING BRAKES DO NOT RELEASE
INITIAL SETUP:
Tools and Special Tools
MSD/ICE, Test Set, Electronic Systems
(WP
0194, Table 1, Item 27)
MSD-V2, Test Set, Electronic Systems
(WP
0194, Table 1, Item 28)
Tool Kit, General Mechanic’s: Automotive
(WP
0194, Table 1, Item 47)
Personnel Required
Wheeled Vehicle Mechanic (2)
References
WP
0004
WP
0086
Equipment Condition
Parking brake applied (TM 9-2330-342-10).
(WP
0190)
Equipment Condition (cont.)
Wheels chocked (TM 9-2330-342-10). (WP
0190)
Emergency air supply gladhand connected to
vehicle (TM 9-2330-342-10). (WP
0190)
Trailer air system charged (TM 9-2330-342-10).
(WP
0190)
TROUBLESHOOTING PROCEDURE
ALL PARKING BRAKES DO NOT RELEASE
STEP 1
Does test equipment pass offset test?
WARNING
Be sure to wear the proper eye protection when working on or around pressurized air systems
if not injury or death could result.
NOTE
•
Trailer air system pressure must be 125 ± 5 psi (862 ± 34 kPa) to begin
troubleshooting the brake system. If the air system pressure cannot be maintained,
refer to Air System Troubleshooting.
•
Air lines and valves listed in the troubleshooting procedure are illustrated and located
in Air System Schematic.
TM 9-2330-342-23&P
0032
0032-1