TM 9-2350-247-10OPERATE AIR BRAKE KIT (M548A1) — Continued 0028 00CAUTIONMake sure you connect the air couplings; SERVICE to SERVICE and EMERGENCY toEMERGENCY.4. Remove two dummy couplings. Connect carrier service and emergency air couplings to towed load service andemergency air couplings.5. Turn two air cutoff cocks at right angles to their air hoses. In this position, the cocks are open.CAUTIONIf pressure drops below 60 psi (8.7 kPa) or LOW PRESSURE warning light comes ON whileyou’re driving stop and fix problem.6. After starting carrier engine, make sure air pressure gauge reaches 85 psi (12.3 kPa) before you drive carrier with atowed load. LOW PRESSURE warning light must go OFF.7. To slow or stop carrier, step on treadle valve pedal just before you apply differential brakes.0028 00-2
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