TM-9-2330-342-23-P
PALLETIZED LOAD SYSTEM TRAILER (PLST) M1076 A1
TECHNICAL MANUAL; FIELD MANUAL
OCTOBER 2012
TM-9-2330-342-23-P - Page 401 of 1348
STEP 2
Do brake chamber rods retract and extend when brake pedal is applied and released?
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
This test covers left rear brake chamber, but it can be used to test operation of all trailer brake
chambers.
1.
Release brake pedal. Refer to vehicle Operator's manual (WP
0190).
2.
Have assistant turn engine start switch to OFF. Refer to vehicle Operator's manual (WP
0190).
3.
Cage brake chamber. Refer to TM 9-2330-342-10 (WP
0190).
CLEVIS
PIN
CLEVIS
SLACK
ADJUSTER
BRAKE
CHAMBER
ROD
BRAKE
CHAMBER
COTTER
PIN
Figure 2.
Slack Adjuster.
4.
Remove two cotter pins, pins, and rod clevis from slack adjuster. Discard cotter pins.
5.
Rotate slack adjuster away from rod clevis.
6.
Uncage brake chamber. Refer to TM 9-2330-342-10 (WP
0190).
7.
Have assistant turn engine start switch to ON. Refer to vehicle Operator's manual (WP
0190).
8.
Push in trailer charge valve in vehicle. Refer to vehicle Operator's manual (WP
0190).
9.
While assistant fully applies and releases brake pedal, observe operation of brake chamber rod. Refer to
vehicle Operator's manual (WP
0190).
CONDITION/INDICATION
Do brake chamber rods retract and extend when brake pedal is applied and released?
DECISION
Rod Free - Go to (Step 3 - Are slack adjusters adjusted and free of damage?).
Rod Binds - Replace brake chamber (WP
0071). Go to (Step 6 - Do trailer service brakes operate correctly?) to
verify problem is solved.
TM 9-2330-342-23&P
0042
0042-3
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