BENDIX SD-03-3617 Manuel D’Utilisation
1
Bendix
®
PP-7
™
Trailer Supply Valve
SD-03-3617
EXHAUST
LOCK
WASHER
1/8 P.T.
SUPPLY
NUT & THREAD
CAP SCREW
(18) PLUNGER
RETURN
SPRING
SPIROL
PIN (1)
(12) O-RING
BUTTON (2)
THIN NUT
(17) PLUNGER
HEX LOCK NUT (15)
FUNCTION AND DESCRIPTION
The PP-7
™
trailer supply valve provides in cab control for the
tractor protection system and functions in conjunction with
the park control valve. It is responsible for synchronizing
the tractor and trailer parking and emergency brakes.
the park control valve. It is responsible for synchronizing
the tractor and trailer parking and emergency brakes.
It is essentially a combination of two non-modulating, on-off
control valves in a single, compact package.
control valves in a single, compact package.
Each of the four pipe tapped ports of the PP-7
™
valve are
identifi ed with cast in, raised letters. The supply and control
ports have 1/8 inch N.P.T.F. dry seal pipe threads while the
delivery and exhaust ports have 1/4 inch N.P.T.F. dry seal
pipe threads.
ports have 1/8 inch N.P.T.F. dry seal pipe threads while the
delivery and exhaust ports have 1/4 inch N.P.T.F. dry seal
pipe threads.
LOCK
WASHER
CAP SCREW
(13) INLET
& EXHAUST
VALVE
1/4 P.T. DELIVERY
(9) O-RING
1/8 P.T. CONTROL
O-RING (19)
BODY
INLET & EXHAUST
(16) VALVE
RETAINING RING (10)
SEALING RING (3)
O-RING RETAINER (11)
INLET & EXHAUST (14)
VALVE SPRING
SPRING (7)
LOWER BODY
PISTON (6)
O-RING (8)
O-RING (5)
O-RING (5)
END PLATE (4)
FIGURE 1 - EXTERIOR
FIGURE 2 - SECTIONAL