SECTION 12: BRAKE AND AIR SYSTEM
16
PA1621 Maintenance Manual All Series | January 2017
FIGURE 11: PP-1
12142
Maintenance and repair information on this valve
is supplied in the applicable booklet, found on
your Technical Publications USB flash drive,
under reference number SD-03-3611.
Remove the valve the following way:
1. Drain the air system.
2. Access this valve by tearing out the finishing
panel, which holds the controls in place
(Figure 11).
3. Disconnect the air tubes.
4. Remove the retaining screws.
5. Service or replace the valve.
6. Installation is the reverse of removal.
13. OPTIONAL EMERGENCY / PARKING
BRAKE OVERRULE CONTROL VALVE (RD-3)
A RD-3 control valve is used when the vehicle is
equipped with the optional parking brake
overrule system. In the case of self-application
of spring brakes due to a pressure drop, the
brakes can be released by holding down this
control valve.
Maintenance and repair information on this valve
is supplied in the applicable booklet, found on
your Technical Publications USB flash drive,
under reference number SD-03-3611.
FIGURE 12: RD-3 12136
14. FLIP-FLOP CONTROL VALVE (TW-1)
A flip-flop control valve mounted on the L.H.
lateral console is provided to unload and lift tag
axle air springs. Another one controls the low-
buoy system (coaches only). It is a manually
operated "on-off" valve.
Maintenance and repair information on this valve
is supplied in the applicable booklet, found on
your Technical Publications USB flash drive,
under reference number SD-03-3602.
FIGURE 13: TW-1 12138
15. DUAL BRAKE VALVE (E-8P)
The E-8P dual brake valve is a floor mounted,
foot-operated type brake valve with two separate
supply and delivery circuits. This valve is located
in the front service compartment (Figure 14).
To Next Page
Loading...
Need help?
General
