BENDIX BP-1 BRAKE PROPORTIONING VALVES Handmatig - Pagina 4

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KEY
C-CONTROL
D-DELIVERY
S-SUPPLY
REPLACES FRONT
AXLE LIMITING
VALVE
EXISTING FRONT
AXLE SERVICE
DELIVERY LINE
FIGURE 6 TYPICAL INSTALLATION SCHEMATIC OF BRAKE PROPORTIONING SYSTEM
9. Components with stripped threads or damaged
parts should be replaced rather than repaired. Do
not attempt repairs requiring machining or welding
unless specifically stated and approved by the
vehicle and component manufacturer.
10. Prior to returning the vehicle to service, make
certain all components and systems are restored to
their proper operating condition.
INSTALLATION (REFER TO FIGURE 6)
1. The vehicle being fitted with a BP-1
proportioning valve must be equipped with a rear axle
service relay valve. It cannot be installed on a vehicle
utilizing a quick release valve system without a relay
valve.
2. For vehicles equipped with a front axle service ratio or
limiting valve (such as the Bendix
be removed and replaced by the BP-1
provided in kit #209924.
Caution: The front and rear BP-1
interchangeable. They are identified with a metal
tag stamped 'BP-1 Front' or 'BP-1 Rear' attached
to one of the cap screws on the cover.
3. Mount the BP-1
™
rear valve and the TR-3
in a protected area that is convenient to the service line
between the brake valve and the relay valve.
4
TRACTOR PROTECTION
CONTROL VALVE
TEE FITTING
EXISTING
LINE
Ì
BRAKE VALVE
rear brake
™
LQ-4
valve) it must
®
™
front valve
™
valves are not
™
™
inversion valve
Key No.
TRACTOR
PROTECTION
VALVE
Ë
TEE FITTING
Ê
EXISTING REAR
AXLE SERVICE
DELIVERY LINE
TEE FITTING
REAR AXLE
SERVICE
RESERVOIR
4. Install the BP-1
rear valve into the service line from the
™
brake valve. Connect the delivery line from the brake
valve to the supply port of the BP-1
port of the BP-1
valve to the control port on the relay
™
valve.
5. Connect the TR-3
™
control port to the delivery of the trailer supply valve,
the supply port to the supply line of the brake valve, and
connect the delivery port to the control port of the BP-1
valve.
Note: If vehicle does not have a front axle ratio or limiting
valve, proceed to "Operational Checks". If vehicle
has a front axle ratio or limiting valve, continue with
Step 6.
6. Remove the existing front axle ratio or limiting valve and
replace it with the BP-1
axle brake valve delivery line to the supply port of the
BP-1
valve, the delivery port of the BP-1
™
front axle actuators, and the control port of the BP-1
valve to the delivery of the TR-3

OPERATIONAL CHECKS

After components have been installed and all connections
made, perform the following checks.
1. With the trailer supply valve pulled out (bobtail running
position) install two air gauges in the service system;
one at an actuator on the front axle and one at an actuator
on a rear axle.
Qty.
Description
1
1
BP-1
(Rear) Valve
™
2
1
TR-3
™
Inversion Valve
3
1
BP-1
(Front) Valve
™
REAR
AXLE
SERVICE
RELAY
VALVE
™
valve and the delivery
inversion valve as follows. Tee the
front valve. Connect the front
™
valve to the
™
inversion valve.
™
™
™