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TM 9-2320-360-20-1
SPRING BRAKE CONTROL VALVE TEST
NOTE
Air pressure must be present at "R"
port on control valve before it will
function.
(1)
Loosen hose no. 2621 at 'R" port on spring brake
control valve and check for escaping air.
(2)
Tighten hose no 2621 on spring brake control.
(3)
Push in parking brake valve (TM 9-2320-360-10).
(4)
Loosen hose no 2622 "D" (discharge) port on
spring brake control valve and check for escaping
air.
(5)
Tighten hose no 2622 on spring brake control.
(6)
Pull out parking brake valve (TM 9-2320-360-10).
BRAKE CAMSHAFT CHECK
(1)
Remove cotter pin and clevis pin from slack
adjuster Discard cotter pin.
NOTE
Slack adjuster and camshaft
should move with minimum effort
away from brake chamber.
(2)
Lubricate brake camshaft (LO-2320-360-12) and
move slack adjuster through range of travel.
(3)
Install clevis pin in slack adjuster and brake
chamber with new cotter pin.
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.
BRAKE SYSTEM TEST
(1)
Release parking brake (TM 9-2320-360-10).
NOTE
Slack adjuster should move
up to 2 in (5 cm).
(2)
Check for movement of slack adjuster while
assistant applies and releases treadle valve.
(3)
Repeat test at seven other slack adjusters
(4)
Apply parking brake (TM 9-2320-360-10).
Change 1 2-711
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