TM 55-2210-223-34
TO 45A2-2-14-22
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........................................................
3-8
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 ..................................................
3-9
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 ...............................................................
3-10
Unable to recover from an emergency application.........................................................................
3-11
Emergency application occurs during service application ..............................................................
3-11
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 ..................................................................................................................................
3-12
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
