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BENDIX PP-7 TRAILER SUPPLY VALVE, Руководство пользователя

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2

Double Check

Valve

#1 Service

Reservoir

PP-7

™

Control

Valve

Modulator

Park

Control

DS-1

Supply

Reservoir

TP-3

™

 Tractor Protection

#2 Service

Reservoir

LQ-3

™

 Valve

E-7

™

Dual
Brake Valve

LP-3

™

 Low

Pressure Indicator

SB-3

SR-1

™

 Spring

Brake Valve

R-8

™

RELAY
VALVE

SB-3

SB-3

SB-3

TRACTOR DUAL AIR BRAKE SYSTEM

FIGURE 3 - PIPING DIAGRAM

FIGURE 4 - PP-7

™

 TRAILER SUPPLY VALVE LESS THAN 50 PSI SYSTEM PRESSURE

PP-7

™

 VALVE LESS THAN 50 PSI

SYSTEM PRESSURE

#1 Service

Reservoir

#2 Service

Reservoir

Double

Check

Valve

Park

Control

Valve

To

Parking

Brakes

Supply

Port

Plunger

Inlet & Exhaust

Exhaust Vent

Control Inlet

and Exhaust

Exhaust

Port

Control

Piston

To Tractor

Protection

Control Port

Содержание PP-7 TRAILER SUPPLY VALVE

Страница 1: ... are identified 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 GENERAL OPERATION The PP 7 trailer supply valve is a panel mounted push pull operated control valve The button of the PP 7 valve must be manually depressed but will automatically pop out and exhaust if ...

Страница 2: ... Valve R 8 RELAY VALVE SB 3 SB 3 SB 3 TRACTOR DUAL AIR BRAKE SYSTEM FIGURE 3 PIPING DIAGRAM FIGURE 4 PP 7 TRAILER SUPPLY VALVE LESS THAN 50 PSI SYSTEM PRESSURE PP 7 VALVE LESS THAN 50 PSI SYSTEM PRESSURE 1 Service Reservoir 2 Service Reservoir Double Check Valve Park Control Valve To Parking Brakes Supply Port Plunger Inlet Exhaust ExhaustVent ControlInlet andExhaust Exhaust Port Control Piston To...

Страница 3: ...through the piston and opening the inlet Opening the control inlet permits supply air to flow out the delivery port of the PP 7 valve See Note NOTE If the vehicle is parked and system air pressure is above 50 P S I the park control valve will not be delivering air to the PP 7 valve control port and the control inlet valve will be closed In this case no air will be flowing from the delivery port of...

Страница 4: ...ust valve The inlet valve seats and the exhaust passage through the control piston is open Air at the delivery port of the PP 7 valve is exhausted at the exhaust port of the PP 7 valve FIGURE 6 PP 7 TRAILER SUPPLY VALVE MANUAL EMERGENCY FIGURE 7 PP 7 TRAILER SUPPLY VALVE PARKAPPLICATION 1 Service Reservoir 2 Service Reservoir Double Check Valve Park Control Valve To Parking Brakes Supply Port Plun...

Страница 5: ...d hose coupling from the tractor trailer supply line coupling Leakage from the tractor trailer supply line should cease immediately and button of the PP 7 valve should be out Dash gauge air pressure after the performing of the preceding test should be within approximately 10 P S I of the initial pressure 9 Reconnect the test gauge to the tractor trailer supply line and depress the button of the PP...

Страница 6: ...H When working on or around a vehicle the following general precautions should be observed at all times 1 Park the vehicle on a level surface apply the parking brakes and always block the wheels Always wear safety glasses 2 Stop the engine and remove ignition key when working under or around the vehicle When working in the engine compartment the engine should be shut off and the ignition key shoul...

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