TM 55-2210-224-34
SYMPTOM INDEX
Troubleshooting
Procedure
Symptom
Page
AIRBRAKE SYSTEM
Air pressure does not build up ............................................ ........................................................
3-6
Air pressure builds up slowly ....................................... ...............................................................
3-6
Main reservoir air pressure not properly controlled ................. ....................................................
3-7
Equalizing reservoir air gage indicates no pressure or a leak ....................................................
3-7
Brake pipe air gage indicates no pressure or more than a 5-psi
leakage in 1 minute ..............................................................................................................
3-8
Equalizing reservoir does not reduce with service application......................................................
3-9
Equalizing reservoir reduction is too fast or too slow with service
application ........................................ ...................................................................................
3-9
Brake pipe reduction is too slow .................................... .............................................................
3-9
Automatic brake does not apply following a brake pipe reduction ..... .......................................
3-10
Undesired release of an automatic brake application by an
increase in either equalizing reservoir or brake pipe pressure .... ..........................................
3-10
Brake pipe pressure does not reduce at emergency rate ............... .............................................
3-11
Unable to recover from an emergency application .....................................................................
3-11
Emergency application occurs during service application ............. ..............................................
3-12
Independent brake does not apply or is too weak ..................... ..................................................
3-12
Independent brake does not fully release ............... .... ...............................................................
3-12
Automatic brake cylinder pressure fails to apply or applies and
releases .......................................................... .....................................................................
3-13
Brake pipe pressure does not recover after an emergency brake
application ....................................... ....................................................................................
3-13
There is loss of main reservoir pressure from brake pipe-initiated
emergency ...........................................................................................................................
3-13
There is no independent brake application ........................... ......................................................
3-13
There is no independent release of an automatic brake application ............................................
3-13
AUTOMATIC BRAKE VALVE
Large cavity of the brake valve leaks with handle in release
position ....................................... .........................................................................................
3-14
Regulating valve exhaust (located in spring housing
near regulating valve handle) of the automatic brake valve leaks .........................................
3-14
INDEPENDENT BRAKE VALVE
There is continuous blow from the exhaust with the handle in
release position ....................................................................................................................
3-14
A-1 CHARGING CUTOFF PILOT VALVE
There is continuous sanding........................................................................................................
3-15
3-3
