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TM 9-2320-360-20-1
NOTE
Air system pressure must be in the
90-125 psi operating range to begin
brake system troubleshooting. If the
air pressure cannot be maintained
within operating range proceed to
AIR SYSTEM TROUBLESHOOTING.
WARNING
When working on parking brake
control system vehicle may roll.
Vehicle must be parked on level
ground. Wheel chocks must be
positioned in front of and behind one
of the rear wheels to keep it from
rolling. Failure to comply may cause
serious injury or death to personnel.
Push in parking valve while assistant observes
spring brake chambers.
2-707
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