2
Reservoir
Brake Valve
Trailer Hand
Control Valve
3. Apply and hold a full foot brake valve application.
Check exhaust port of Trailer Control Valve for leakage
with soap solution. Permissible leakage is a one inch
bubble in five seconds (100 sccm). (
Note
: On some
vehicles, an exhaust line is connected to the exhaust
port and piped outside the cab in which case it may
be necessary to disconnect this line to make leakage
check.)
B. If Double Check Valve is to be bench tested or tested on
the vehicle, two separately controlled air supplies must
be connected to the inlet ports.
1. Install an accurate test gauge in the outlet port or in
a line from outlet port.
2. Apply and release air to one inlet port and note that
gauge registers application and release.
3. Repeat by applying and releasing air to other inlet
port.
4. Leakage check should be performed at inlet ports of
valve in the following manner:
a.
Disconnect line from one inlet port.
b.
Apply air to other inlet port and coat opposite
inlet port with soap solution. Permissible leakage is
a one inch bubble in five seconds (100 sccm).
c.
Repeat Step b applying air to other inlet port
while checking opposite inlet port for leakage.
If the Double Check Valve does not function as described or
if leakage is excessive, it is recommended that the valve be
repaired or replaced with genuine Bendix parts. The follow-
ing instructions should prove helpful:
DISASSEMBLY
1. Remove end cap(s) from valve.
2. Remove grommets (if applicable).
3. Remove shuttle and/or shuttle guide, disc and/or disc
guide (depending upon type of valve).
CLEANING AND INSPECTION
1. Clean all metal parts in a cleaning solvent.
2. Inspect all metal parts for signs of cracks, wear or dete-
rioration. Replace all parts not considered serviceable.
3. Replace all rubber parts.
ASSEMBLY
1. Install disc guide, disc and/or shuttle and shuttle guide.
2. Coat all static seals such as o-rings, grommets, etc.
with BW 650M Silicone lubricant (BW 291126). It is not
necessary to lubricate shuttles or discs.
3. Install grommets.
4. Install end cap(s).
TESTING OF REBUILT DOUBLE CHECK VALVE
SERVICE CHECKS
OPERATING AND LEAKAGE TEST
A. When the Double Check Valve is used in conjunction
with a Trailer Control Valve, the following operating and
leakage test can be made:
1. Apply and release foot brake valve and note that the
brakes apply and release on both tractor and trailer.
2. Apply and release the Trailer Control Valve and note
that only the trailer brakes apply and release. With
trailer control valve applied check exhaust port of
foot brake valve for leakage with soap solution.
Permissible leakage is a one inch bubble in five
seconds (100 sccm).
Reservoir
Reservoir
Trailer Supply
Spring Brake Control
Double Check
Valve
FIGURE 4 -
DOUBLE CHECK VALVE: SYSTEM WITH TWO
SUPPLY SOURCES
PP-7
PP-1
FIGURE 3 -
DOUBLE CHECK VALVE: CONTROL OF
SYSTEM FROM EITHER OF TWO CONTROL SOURCES
Double
Check
Valve
To Trailer
Brakes
Summary of Contents for LE MIRAGE XLII BUS SHELLS
Page 1: ...COACH MANUFACTURER MAINTENANCE MANUAL LE MIRAGE XLII BUS SHELLS PA1564 1ST EDITION...
Page 12: ...Section 00 GENERAL INFORMATION 10 PA1564 FIGURE 13 METRIC US STANDARD CONVERSION TABLE 00005...
Page 13: ...Section 00 GENERAL INFORMATION PA1564 11 FIGURE 14 CONVERSION CHART 00006...
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Page 63: ...SECTION 01 ENGINE PA1564 33 FIGURE 13 POWER PLANT CRADLE INSTALLATION 01140...
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Page 229: ...FAULT CODE MANUAL Created on 00 04 25 15 30 1 FAULT CODE MANUAL B7L B7TL B12...
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Page 379: ...Section 12 BRAKE AND AIR SYSTEM PA1564 21 FIGURE 38 AIR OPERATED BRAKING SYSTEM WE...
Page 380: ...Section 12 BRAKE AND AIR SYSTEM PA1564 22 FIGURE 39 AIR OPERATED BRAKING SYSTEM W5...
Page 387: ...Section 12 BRAKE AND AIR SYSTEM PA1564 29 FIGURE 46 ABS 6S 5M CONFIGURATION...
Page 418: ...16 BW2158 Honeywell Commercial Vehicle Systems Company 4 2001 Printed in USA...
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Page 926: ...PROCEDURE NO SAV00044 REVISION 00 Page 2 of 2 Slide out...
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Page 1086: ...Section 22 HEATING AND AIR CONDITIONING PA1564 18 FIGURE 17 DOUBLE SWEEP EVACUATION SET UP...
Page 1118: ...Section 22 HEATING AND AIR CONDITIONING PA1564 50 FIGURE 54 HEATER LINE SHUTOFF VALVES WE...
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Page 1125: ...Compressor 62 11052 Rev A WORKSHOP MANUAL for MODEL 05G TWIN PORT COMPRESSOR R...
Page 1126: ...WORKSHOP MANUAL COMPRESSOR MODEL 05G TWIN PORT...
Page 1149: ...Compressor 62 11053 Rev B SERVICE PARTS LIST for MODEL 05G TWIN PORT COMPRESSOR 1 2 3 4 5 6 R...
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Page 1223: ...Section 26 XLII SLIDE OUT PA1564 11...
Page 1224: ...Section 26 XLII SLIDE OUT PA1564 12 FIGURE 16 KEYLESS BUSHING INSTALLATION INSTRUCTION...