TMC MCI mc-9 - Page 34

In the event of a ir pressure loss in the service broke system, oir
pressure,
modulated by the drivers broke pedal , is supp li ed from the
emergency tonk to the emergency or pork chambers on the rear axle . A
minimum of three broke app lications and re lea ses ore possible , up to
the po i nt when pressure is so l ow as to automat i cal ly trigger the pork
brakes to come full on .
IMPORTANT
BEFORE STARTING ENGINE:
1. Make sure thot parking broke is applied (contr-:.1 button is up).
2. Gearshift lever in " neutral".
3. DO NOT Depress clutch when starting engine. (Standard Trans•
mission
Only) .
BEFORE
MOVING COACH:
1. Air pressure gouge must read 100 p .s.i. ( 689 kPo) or more.
2. Make a full servi ce broke application. Ho ld servi ce broke ,n
applied position.
3. Push parking broke control button down. Parking brakes sbould
release .
4. If brakes do not release. reduce air pressure to below 75p .s.i. (517
kPo ) by pumping broke pedal. Operate engine until compressor
cuts out, then repeat above procedure .
DO NOT A TT EMPT TO BRAKE COACH FREE IF
BRAKES FAIL TO RELEASE
PARKING
1. Gearshift l ever in neutral.
2. Always app ly parking brakes ( control button up) before leaving
coach . Brakes will remain applied even if coach air pressure is lost.
TO EMERGENCY Fill PARK BRAKE SYSTEM APPLY AIR TO VALVE
LOCATED
IN TOOL COMPARTMENT.
32
NOTE : Air pressure gouge on dash does not s how park i ng broke
reservoir pressure. If pre ssure on gouge drops during ope r ation , four
parking brake applications can still be made . Parking and
'
emergency brakes wi ll not apply au t omatically until park i ng res ervoi r
pressure
drops below 40 lb s. ( 276 kPo). If pressure on gouge drops
be l ow 70-75 lbs . ( 487 - 517 kPo) during operat i on , " LOW AIR " tell-to le
will flash and warning buzzer w ill sound . Coach should be stopped
immediately and cause of air loss corrected before proceeding.
FIG. 33
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