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®
®
™
Bendix
AH-1B
DELIVERY PORT
PRESSURE
PLATE
DIAPHRAGM
PUSH ROD
FIGURE 1
DESCRIPTION
The AH-1B
™
air hydraulic intensifier is a hydraulic brake,
power booster which utilizes compressed air for its power
assist. Its function is to convert air pressure to hydraulic
pressure for use in the brake system.
The AH-1B
™
intensifier consists of three major component
groups; a specially designed type 30 air actuator is bolted
to a single piston master cylinder which incorporates an
Air Hydraulic Intensifier
RESERVOIR
CAP
BRAKE FLUID
MASTER
CYLINDER
NON-PRESS
PLATE
CLAMP RING
AIR INLET
ELECTRICAL FLUID
LEVEL INDICATOR
CONNECTION
ELECTRICAL
CONNECTOR
RETURN
SPRING
BOOT
SEAL
PISTON
O-RING
MOUNTING
BRACKET
DRAIN HOLE
integral brake fluid reservoir. A bracket installed between the
actuator and master cylinder provides a means for mounting.
A float actuated, low fluid level, on/off electrical switch is
incorporated in the reservoir filler cap assembly. A two
"prong" connector is provided to permit the installation of a
vehicle electrical cable assembly. Switch actuation occurs
when the reservoir fluid level drops below the "minimum"
level marking on the reservoir.
BRAKE FLUID
RESERVOIR
AIR
INLET
PORT
ACTUATOR
MOUNTING
BRACKET
INDICATOR
SWITCH
FILLER CAP
ASSY.
RESERVOIR
FLOAT
COMPENSATING
VALVE
HYD.
DELIVERY
PORT
RETURN
SPRING
PISTON
ACTUATOR
LIP
1
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Related Manuals for BENDIX AH-1B AIR HYD INTENSIFIER
Summary of Contents for BENDIX AH-1B AIR HYD INTENSIFIER
- Page 1 ® ® ™ Bendix AH-1B Air Hydraulic Intensifier ELECTRICAL FLUID LEVEL INDICATOR CONNECTION BRAKE FLUID RESERVOIR RESERVOIR INLET PORT ACTUATOR BRAKE FLUID DELIVERY PORT MASTER CYLINDER MOUNTING BRACKET ELECTRICAL NON-PRESS CONNECTOR INDICATOR PLATE RETURN SWITCH CLAMP RING SPRING FILLER CAP ASSY.
- Page 2 SPRING BRAKE ACTUATOR HYDRAULIC PUSH-PULL VALVE DISC BRAKE ™ AH-1B AIR OVER HYDRAULIC BRAKE INTENSIFIER VALVE RELAY VALVE AIR DRYER RESERVOIR COMPRESSOR ™ FIGURE 2 - TYPICAL AH-1B AIR HYDRAULIC INTENSIFIER SYSTEM AIR APPLIED DIAPHRAGM POSITION APPLIED POSITION COMPENSATING TILT VALVE SEALED HYDRAULIC FLUID BEING DELIVERED PISTON APPLIED...
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Page 3: Operation
AIR INLET NON-APPLIED POSITION DIAPHRAGM NON-APPLIED POSITION COMPENSATING TILT VALVE UNSEALED POSITION HYDRAULIC FLUID PORT PISTON NON-APPLIED POSITION RETURN SPRING NON-APPLIED POSITION FIGURE 4 - CUTAWAY VIEW OF RELEASED POSITION OPERATION Brakes Applied During a brake application, modulated air pressure from the the valve as the piston returns. -
Page 4: Technical Specifications
Bendix parts. electrical power from the vehicle. OPERATING AND LEAKAGE TESTS 5. If the vehicle is equipped with an air over hydraulic brake system or any auxiliary pressurized air 1. - Page 5 Use only proper tools and observe all precautions pertaining to use of those tools. ® 9. Use only genuine Bendix replacement parts, components and kits. A. Use only components, devices and mounting and attaching hardware specifically designed for use in hydraulic brake systems.
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Page 6: Removal From Vehicle
REMOVAL FROM VEHICLE 1. Disconnect the hydraulic line from the delivery port of the master cylinder and plug the line. Allow the hydraulic fluid from the master cylinder to drain into a suitable container. Remove reservoir cover to facilitate drainage. 2. -
Page 7: Cleaning And Inspection
5. Note and mark the orientation of the actuator and master cylinder to the mounting bracket. Remove the two nuts and washers from the mounting studs of the actuator (use a 15/16" socket wrench). Separate the master cylinder and actuator from the mounting bracket and retain the actuator for later disassembly. - Page 8 “Operating and Leakage Tests” prior to placing the and lining up the marks made prior to disassembly. vehicle in service. BW1599 © 2004 Bendix Commercial Vehicle Systems LLC All rights reserved. 4/2004 Printed in U.S.A.
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