Quantcast GRABBING BRAKES - TM-9-2330-380-14-P0075

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TM 9-2330-380-14&P
Table 3-1. Operator/Crew Troubleshooting (cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. GRABBING BRAKES
WARNING
Wear goggles when opening air reservoir drain cocks. Failure to do so could cause serious eye
injury from high pressure air.
NOTE
M129A4 has two drain cocks. XM1063 has three drain cocks. Make sure all drain cocks are
opened/closed.
Check air system for moisture
Open all air reservoir (2) drain cocks (1) and allow any
moisture to drain.
If reservoirs are dry and malfunction is not corrected,
close drain cocks and notify unit maintenance.
SUSPENSION SYSTEM
10. SEMITRAILER SAGS TO ONE SIDE
Step 1. Check tires to see if air pressure is low or uneven.
Inflate tires to correct pressure. M129A4 tire pressure is 70 psi (482.65 kPa).
XM1063: Highway ............................................................................. 70 psi (482.65 kPa)
Cross country, sand, mud, snow .......................................... 45 psi (310.28 kPa)
Step 2. Check to see if load in semitrailer is evenly distributed.
Distribute load evenly.
Step 3. Visually check for broken spring leaves.
If broken, notify unit maintenance.
WHEELS, HUB,S BEARINGS AND TIRES
11. AIR LEAKAGE FROM TIRES
Step 1. Inspect tires for punctures.
If tire is punctured, replace wheel and punctured tire with spare (para. 2-17).
Step 2. Check valve core for damage or looseness.
If damaged or loose, notify unit maintenance to tighten or replace valve core.



 


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