2-8. Coupling Semitrailer To Towing Vehicle (cont'd)
f. Raise spring loaded covers (6) on gladhands on front of semitrailer.
XM1063 gladhands and M129A4 gladhands operate in the same manner.
XM1063 gladhands are shown.
g. Connect coupling marked SERVICE on towing vehicle air hose (7) to
gladhand marked SERVICE (8) on semitrailer.
h. Connect coupling marked EMERGENCY on towing vehicle air
hose to gladhand marked EMERGENCY (9) on semitrailer.
XM1063 has three air reservoirs. M129A4 has two air
reservoirs. Make sure all air reservoirs are closed.
Check all air reservoirs (10) and make certain all
drain cocks (11) are closed.
j. Open two air shut-off valves on towing vehicle
to pressurize semitrailer air system.