Bendix-commercial-vehicle-systems TP-4 TRACTOR PROTECTION VALVE 6/07 User Manual download pdf

SD-03-3653

Bendix

TP-4

™

Tractor Protection Valve (Formerly VM-1)

FIGURE 1 EXTERIOR VIEW

SERVICE STOP

LIGHT SWITCH

(SLS) PORT

TRAILER EMERG.

SUPPLY (TES) PORT

TRAILER EMERG. STOP

LIGHT SWITCH (TE-SLS)

PORT

TRAILER SERVICE

SUPPLY PORT (TSS)

PRIMARY CIRCUIT

DELIVERY PORT

(PCD)

MOUNTING

SURFACE

DESCRIPTION

The Bendix

TP-4

™

tractor protection valve is used in the

dual air brake system and houses three valves that serve

the trailer and tractor braking system. The valves are:

1. The trailer service line shut off portion of tractor

protection system which operates in conjunction

with the dash-mounted PP-3

™

trailer supply valve to

manually or automatically close and retain sufﬁ cient air

pressure in the towing vehicle to stop it with its service

brakes.

2. A double check valve which permits either primary or

secondary circuit air pressure from the dual brake valve

to actuate trailer brakes.

3. A double check valve which permits use of a trailer

control valve to control only the trailer brakes.

In addition to the ports necessary for the function of the

above described valves, the manifold also provides ports

for the installation of the service stop light switch, front

axle limiting control valve, and the TE-1

™

trailer emergency

stop light switch.

Four 23/64" holes are provided for mounting.

FIGURE 2 SECTIONAL

SECONDARY

CIRCUIT

DELIVERY PORT

(SCD)

VENT

PIPE PLUG

VENT

1 2 3 4 5 6

Summary of Contents

Page 1 - SD-03-3653

1 SD-03-3653Bendix® TP-4™ Tractor Protection Valve (Formerly VM-1)FIGURE 1 EXTERIOR VIEWSERVICE STOP LIGHT SWITCH (SLS) PORTTRAILER EMERG. SUPPLY (TES

Page 2 - OPERATION

2FIGURE 3 TP-4™ TRACTOR PROTECTION VALVETO TRAILER SERVICE LINESTOP LIGHT SWITCHTE-1™ TRAILER EMERGENCY STOP LIGHT SWITCHTRAILER SERVICE LINE SHUT-OF

Page 3 - OPERATING AND LEAKAGE CHECKS

3FIGURE 4 TP-4™ TRACTOR PROTECTION VALVE (TRAILER APPLICATION)PREVENTIVE MAINTENANCEImportant: Review the Bendix Warranty Policy before performing any

Page 4 - ASSEMBLY

4FIGURE 5 TP-4™ TRACTOR PROTECTION VALVE (SERVICE APPLICATION)10. Disconnect line from secondary circuit delivery (SCD) port and plug end of line. Mak

Page 5 - INJURY OR DEATH:

5NOTE: When using pipe thread sealant during assembly and installation, take particular care to prevent the sealant from entering the valve itself. A

Page 6

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Bendix-commercial-vehicle-systems TP-4 TRACTOR PROTECTION VALVE 6/07 User Manual

Browse online or download User Manual for Equipment Bendix-commercial-vehicle-systems TP-4 TRACTOR PROTECTION VALVE 6/07. Bendix Commercial Vehicle Systems TP-4 TRACTOR PROTECTION VALVE 6/07 User Manual

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