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®
®
Bendix
D-2
Governor
COVER
EXHAUST
PORT
UNLOADER
PORTS (3)
RESERVOIR
PORTS (3)
BLUE
NONMETALLIC
20
O-RING
FIGURE 2 - TYPES OF COVERS
DESCRIPTION
The D-2
governor, operating in conjunction with the unloading
mechanism, automatically controls the air pressure in the
air brake or air supply system between a maximum (cut-
out) pressure and a minimum (cut-in) pressure. The
compressor runs continually while the engine runs, but the
actual compression of air is controlled by the governor
actuating the compressor unloading mechanism which stops
or starts the compression of air when the maximum or
minimum reservoir pressures are reached.
1
RETAINING
RING
17
PRESSURE SETTING
SPRING
19 LOWER
SPRING SEAT
18
SPRING GUIDE
19 LOWER
SPRING SEAT
8 O-RING
12 O-RING
MOUNTING
HOLES
(2)
INLET/EXHAUST
VALVE SPRING
FIGURE 1 - D-2
CLEAR/BLACK
NONMETALLIC
BLACK
WITH O-RING
RUBBER
16
4
UPPER SPRING
ADJUSTING
SEAT
SCREW
5
EXHAUST
STEM
8
O-RING
9
15
10
RETAINING
INLET/EXHAUST
RING
VALVE
GOVERNOR
5
11
15
D-2
governors are provided with mounting holes which allow
direct mounting to the compressor or remote mounting.
Porting consists of three reservoir ports (1/8 inch P.T.),
three unloader ports (1/8 inch P.T.) and one exhaust port
(1/8 inch P.T.).
14
WASHER
RETAINING
RING
3
LOCKNUT
11
PISTON
2
BODY
6
EXHAUST
STEM
7
FILTERS
11
PISTON
5
11
NONMETALLIC
FIGURE 3 - TYPES OF PISTONS
13
12
O-RING
10
INLET/
EXHAUST
VALVE
9
INLET/EXHAUST
COVER VALVE
SPRING
15
RETAINING
RING
METALLIC
1

Summary of Contents

  • Page 1

    ® ® ™ Bendix Governor UPPER SPRING ADJUSTING WASHER RETAINING SEAT SCREW RING O-RING RETAINING LOCKNUT RING PISTON COVER INLET/ PRESSURE SETTING BODY EXHAUST SPRING VALVE 19 LOWER SPRING SEAT EXHAUST PORT SPRING GUIDE 19 LOWER SPRING SEAT 8 O-RING...

  • Page 2

    OPERATING TESTS or remanufactured unit, or repaired with genuine Bendix parts Start the vehicle engine and build up air pressure in the air available at authorized Bendix parts outlets.

  • Page 3

    Remove the lock nut (3), then the hex-shaped upper system pressure has been depleted. spring seat (16) from the adjusting screw (4). Remove 8. Use only genuine Bendix ® replacement parts, components and kits. Replacement hardware, the pressure setting spring (17), lower spring seat (19), tubing, hose, fittings, etc.

  • Page 4

    1-7/8 inches. Install the lock nut (3). BW1425 © 2004 Bendix Commercial Vehicle Systems LLC. All rights reserved. 3/2004 Printed in U.S.A.

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