BENDIX BW1436 Uživatelský manuál stáhnout pdf (Strana 1)

SD-03-3651

DESCRIPTION

The Bendix

TP-2

™

tractor protection valve functions as a

set of remote controlled cut-out cocks, protecting the tractor

air supply should a loss of air occur in the trailer side

(delivery) of the valve. The TP-2

™

valve is a three line system

as compared to the TP-3

™

valve which is a two line system.

The valve is normally piped as shown in Figure 2. Lines

delivering service and supply (emergency) pressure to the

trailer are routed through the valve. A third control Iine comes

from the on-off control valve in the cab.

With the control valve in the “normal” (on) position and

reservoir pressure at approximately 50 psi, the valve will

open and service and emergency air is permitted to pass

through the valve. With the control valve in the emergency

position (off) position the vaIve is closed and service and

emergency lines on the trailer (delivery) side of the valve

are open to atmosphere through the vaIve’s exhaust port.

The valve will automatically close and vent delivery lines to

atmosphere should air pressure drop below a safe operating

minimum pressure (approx. 40 psi), thus retaining and

protecting the tractor air brake system against complete

loss of air.

NOTE: With a TP-2

™

valve system it should be noted that

the pneumatic logic for the legally required automatic

function is incorporated in the TP-2

™

valve whereas

in the current TP-3

™

valve system the logic is in the

supply valve in the cab. Consequently a TP-2

™

valve

should never be replaced by a TP-3

™

valve unless

the on-off control valve in the cab is replaced with

either a PP-3

™

or PP-7

™

trailer supply valve.

OPERATION - NORMAL POSITION

With air pressure at approximately 50 psi at the control

port, the diaphragm and plunger assembly is depressed

and the plunger contacts the service and exhaust valve

surface sealing the exhaust passage through the center of

the plunger. Continued travel of the plunger moves the service

valve off its seat, opening the service passage from the

Bendix

TP-2

™

Tractor Protection Valve

FIGURE 1 - TRACTOR PROTECTION SYSTEM

TRAILER

EMERGENCY

PORT

CAP NUT

CONTROL PORT

TRAILER

SERVICE

PORT

EXHAUST PORT

TRACTOR

SERVICE

PORT

TRACTOR

EMERGENCY

PORT

(11) O-RING

(2) COVER

EXHAUST PLUNGER

SPRING (15)

CONTROL CAP (13)

O-RING (9)

VALVE SEAT (5)

SERVICE AND EXHAUST

VALVE (6)

O-RING (10)

SPRING (8)

VALVE

RETAINER (7)

O-RING (16)

CAP NUT (12)

EXHAUST VALVE PLUNGER AND

DIAPHRAGM ASS’Y (14)

EMERGENCY

VALVE (3)

EMERGENCY VALVE

SPRING (9)

(1) CAP SCREW

1 2 3 4

Shrnutí obsahu

Strany 1

1®SD-03-3651DESCRIPTIONThe Bendix® TP-2™ tractor protection valve functions as aset of remote controlled cut-out cocks, protecting the tractorair supp

Strany 2 - OPERATING AND LEAKAGE CHECK

2tractor service port to the trailer service port. The stem ofthe service and exhaust valve contacts the emergency valve,sealing the exhaust passage.

Strany 3 - CLEANING AND INSPECTION

39. With soap solution:A. Coat emergency line coupling. Leakage of a 1"bubble in 5 seconds is permissible (100 SCCM).B. Coat service line couplin

Strany 4 - PERSONAL INJURY OR DEATH:

46. Preassemble the following parts before installing in valve:a. Install valve seat o-ring (11) in small bore of valveseat making certain it is prope

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Connerton LRB Series Uživatelský manuál (4 strany)

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BENDIX BW1436 Uživatelský manuál Strana 1