BENDIX R-12V User manual

BENDIX®R-12®& R-14®UNIVERSAL SERVICE REPLACEMENT RELAY VALVES KIT

Figure 1 – Bendix®R-12®& R-14®Universal Service Replacement Relay Valves Kit

R-12®Relay Valves

R-14®Relay Valves

R-12V R-12H

R-14V R-14H

Kit Contents

Item No. Description Qty.

1 O-Ring 1

2 *Shim Washer 3

3 *Shim Washer 3

4 *Shim Washer 3

5 Spring 1

6 Piston Bearing 1

7 O-Ring 1

8 O-Ring 1

9 O-Ring 1

10 Washer 3

* Nine shims of three different thicknesses are

included in this kit.

GENERAL SAFETY GUIDELINES

WARNING! PLEASE READ AND FOLLOW THESE INSTRUCTIONS

TO AVOID PERSONAL INJURY OR DEATH:

When working on or around a vehicle, the following guidelines should be observed AT ALL TIMES:

▲Park the vehicle on a level surface, apply the

parking brakes and always block the wheels.

Always wear personal protection equipment.

▲Stop the engine and remove the 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 should be removed. Where circumstances

require that the engine be in operation, EXTREME

CAUTION should be used to prevent personal

injury resulting from contact with moving,

rotating, leaking, heated or electrically-charged

components.

▲Do not attempt to install, remove, disassemble

or assemble a component until you have read,

and thoroughly understand, the recommended

procedures. Use only the proper tools and

observe all precautions pertaining to use of those

tools.

▲If the work is being performed on the vehicle’s

air brake system, or any auxiliary pressurized air

systems, make certain to drain the air pressure

from all reservoirs before beginning ANY work

on the vehicle. If the vehicle is equipped with a

Bendix®AD-IS®air dryer system, a Bendix®DRM™

dryer reservoir module, or a Bendix® AD-9si®air

dryer, be sure to drain the purge reservoir.

▲Following the vehicle manufacturer’s

recommended procedures, deactivate the

electrical system in a manner that safely removes

all electrical power from the vehicle.

▲Never exceed manufacturer’s recommended

pressures.

▲Never connect or disconnect a hose or line

containing pressure; it may whip and/or cause

hazardous airborne dust and dirt particles. Wear

eye protection. Slowly open connections with

care, and verify that no pressure is present. Never

remove a component or plug unless you are

certain all system pressure has been depleted.

▲Use only genuine Bendix®brand replacement

parts, components and kits. Replacement

hardware, tubing, hose, ﬁ ttings, wiring, etc. must

be of equivalent size, type and strength as original

equipment and be designed speciﬁ cally for such

applications and systems.

▲Components with stripped threads or damaged

parts should be replaced rather than repaired.

Do not attempt repairs requiring machining or

welding unless speciﬁ cally stated and approved

by the vehicle and component manufacturer.

▲Prior to returning the vehicle to service, make

certain all components and systems are restored

to their proper operating condition.

▲For vehicles with Automatic Traction Control

(ATC), the ATC function must be disabled (ATC

indicator lamp should be ON) prior to performing

any vehicle maintenance where one or more

wheels on a drive axle are lifted off the ground

and moving.

▲The power MUST be temporarily disconnected

from the radar sensor whenever any tests USING

A DYNAMOMETER are conducted on a vehicle

equipped with a Bendix® Wingman®system.

▲You should consult the vehicle manufacturer's operating and service manuals, and any related literature,

in conjunction with the Guidelines above.

Midland®KN28010, 28010A

CHANGEOVER INFORMATION

BENDIX®R-12®& R-14®UNIVERSAL REPLACEMENT RELAY VALVES

The R-12®(H & V) and the R-14®(H & V) universal replacement valves include mounting bracket Pc. No. 296010 and

installation instructions. The R-12 and R-14 relay valves are available with either two (2) horizontal delivery ports or four (4)

vertical delivery ports. The R-12 and R-14 can be used in either service or spring brake control systems and in addition

can be used to replace anti-lock modulators when the anti-lock system is reverted to a straight service brake system. The

R-12 and R-14 relay valves are similar in appearance. The difference between them is the R-14 incorporates a balance

port which provides the added feature of built in anti-compounding when the R-14 is used to control the emergency

section of the spring brakes. Refer to the chart below to select the appropriate R-12 or R-14 relay valve.

Fig. 4

Fig. 5 Fig. 6 Fig. 7 Fig. 8

Fig. 9 Fig. 10

Fig. 1 Fig. 3Fig. 2

Fig. 11 Fig. 12

Fig. 13 Fig. 14 Fig. 15 Fig. 16

Bendix R-1®Bendix R-5®Bendix R-6®Bendix R-8®

Bendix R-10®Berg®12342, 12343, 12344 Berg 12345, 12346 Kelsey Hayes®

Midland KN28060, 28060A Midland KN28130 Midland 28140

Midland 28160 Sealco®A1100 Sealco 9125 Series Wagner®RG-2

Make Model Control

(service)

Supply

(reservoir) Delivery Ref.

Fig. Comments

Bendix®R-1C (1) 1/4" (2) 1/2" or (2)

1/2" & (1) 3/4" (3) 3/8" 1 Ref. Bendix Cat. Pg.

03-B-1

Bendix R-5 (2) 1/4" (2) 1/2" or (2)

1/2" & (1) 3/4"

(2) 1/2" & (2)

3/8" 2Ref. Bendix Cat. Pg.

03-B-2

Bendix R-6 (1) 1/4" (1) 3/8" or 1/2"

and/or (1) 3/4" (4) 3/8" 3 Ref. Bendix Cat. Pg.

03-B-3

Bendix R-8 (1) 1/4" (1) 3/4" or (2)

3/4"

(2) 1/2" & (1)

1/4" 4Ref. Bendix Cat. Pg.

03-B-4

Bendix R-12 (1) 1/4" (1) 1/2" (4) 1/2" * Pc. No. 102277

Bendix R-10 (2) 1/4" 1/2" or 3/4" 3/8" or 1/2" 5 Ref. Bendix Cat. Pg.

03-B-4B

Berg®12340 (1) 1/4" (1) 1/2" (2) 3/8" * With Bracket

Berg 12341 (1) 1/4" (1) 1/2" (2) 3/8" * No Bracket

Berg 12342 (1) 3/8" (1) 3/8" (4) 3/8" 6 Triangular Bracket

Berg 12343 (1) 3/8" (1) 3/8" (4) 3/8" 6 No Bracket

Berg 12344 (1) 3/8" (1) 3/4" (4) 3/8" 6 Side Mount Bracket

Berg 12345 (1) 1/4" (1) 3/4" (4) 3/8" 7 Four Delivery Ports

Berg 12346 (1) 1/4" (1) 3/4" (2) 3/8" 7 Two Delivery Ports

Kelsey

Hayes®5468 (1) 1/4" (1) 1/2" (2) 3/8" 8 Truck / Tractor Relay

Valve with Bracket

Kelsey

Hayes 5470 (2) 3/8" (1) 1/2" (1) 3/4" (4) 3/8" and

1/2" 8Trailer Relay Valve (no

Bracket)

Midland®KN-28000 (1) 1/4" (2) 3/8" (2) 3/8" * Diaphragm Type,

Mounting Bracket

Midland KN-28010 (1) 1/4" (1) 3/8" (2) 1/4" (1)

3/8" 9 Triangular Bracket

Midland KN-28010A (1) 1/4" (1) 3/8" (3) 3/8" 9 Triangular Bracket

Midland KN-28060 (1) 3/8" (2) 1/2" (2) 1/2" 10 Mounting Bracket on

Cover

Midland KN-28060A (1) 3/8" (2) 1/2" (2) 1/2" 10 Mounting Bracket on

Cover

Midland KN-28130 (2) 1/4" (1) 1/2" (2) 1/2" 11 Frame Rail Mounting

Midland KN-28240 (1) 1/4" (2) 1/2" (2) 1/2" 12 Frame Rail Mounting

Midland KN-28160 (1) 1/4" (1) 3/4" (2) 1/2" 13 Pad or Nipple Mount

Sealco®A-1100 (2) 1/4" (1) 3/8" (4) 1/4" 14 Truck / Tractor Relay

Valve

Sealco 9125 Series (2) 1/4" (2) 1/2" (2) 3/8" (1)

1/2" 15 All 9125 Series Valves

Wagner®Model RG-2 (1) 1/4" (2) 3/8" or 1/2" (2) 3/8" or

1/2" 16

Includes Parts AE-

78880, 78887, 78889

*Not Illustrated

RELAY VALVE SPECIFICATION CHART

To facilitate installation the following ttings may be used:

Reducer Bushings

Thread Size Piece Number

3/4" to 1/2" 234680

1/2" to 3/8" 230808

1/2" to 1/4" 230130

1/2" NPT Pipe Nipple (Heavy Duty)

Length Piece Number

1-1/2" 212324

PREPARATION

1. Block all vehicle wheels.

2. Drain air pressure from all reservoirs.

3. Locate valve to be replaced: note method of mounting.

4. If valve is bracket mounted:

A. Note position of bracket relative to supply port

(reservoir connection).

B.Determine mounting position of bracket on R-12®

or R-14®valve.

C. Remove two cap screws from valve cover, mount

bracket and retorque cap screws to 80-120 in-lbs.

(DO NOT REMOVE ALL FOUR CAP SCREWS

FROM COVER AT THE SAME TIME.)

5. If valve is reservoir mounted:

A. Discard bracket.

B. Check the reservoir port size. If an R-12V or R-14V

valve is to be installed and the reservoir port is larger

than 1/2" P.T., a reducer bushing will be required.

C. Mount the R-12V or R-14V using a 1/2" heavy wall

steel nipple. Use a "Teon" pipe thread sealant on

both ends of the nipple to prevent thread damage

when removal is necessary.

6. Identify and mark all lines to valve as follows:

A. Service port (from brake valve or control valve).

B. Supply port (from reservoir).

C. Delivery ports (from chambers).

7. Remove air lines, then valve.

INSTALLATION

8. Install the R-12 or R-14 valve. If bracket mounted,

secure to frame. If reservoir mounted, use small

amount of pipe sealant on reducer bushing and/or

nipple as necessary.

9. Select and install air lines, using necessary ttings

and a small amount of pipe sealant. Plug all unused

ports and remove and discard the cardboard protector

from the exhaust port of the R-12 or R-14, if it is so

equipped.

10. Before placing the vehicle in service, close all reservoir

ports and perform the following tests:

A. Full charge the vehicle air system and adjust the

vehicle brakes.

B. Make several brake applications and check for

prompt application and release of the brakes at

the appropriate wheels.

C. Make and hold a brake application and check all

R-12 or R-14 ttings for excessive leakage with

a soap solution. Tighten ttings as required.

Log-on and Learn from the Best

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