WABCO 461 317 User manual

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461 317
1/2
Brake Valve
© 2005 American Standard All rights reserved 461 317 961 3/09.2005
Test instruction
Prior to testing read carefully the safety instruc-
tions.
Safety information
Only qualified skilled personnel with specific system
knowledge are authorized to perform the device
testing at the test bench.
Never start testing until you have read and under-
stood all the information required for the test.
Test the device on a calibrated test bench only.
In case of doubt, use test values specified by the ve-
hicle manufacturer.
While testing the device, always adhere to the con-
tents of this test instruction.
Comply with the company and national accident
prevention/health & safety regulations
Unlock screws, hoses and equipment parts only
when the respective lines of the test bench are vent-
ed.
Test instruction for device 461 317 ... 0
Symbols and Signal Words
Possible hazardous situation. To disregard this may lead to seri-
ous or fatal personal injuries.
Possible hazardous situation. To disregard this may lead to per-
sonal injuries.
– Handling
•List
Instructions, explanations, information, tips
Gauge indication
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WARNING CAUTION
000 008 036 046 054
002 009 037 047 055
003 011 038 048 056
004 012 039 049
005 020 041 050
006 024 044 051
007 025 045 053
WARNING
CAUTION
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Brake Valve461 317
1/2
© 2005 American Standard All rights reserved 461 317 961 3/09.2005
Fig. 1 + 2 Brake valve 461 317 ... 0, functional symbol
Necessary equipment/tools
• Test bench 435 197 000 0 or an adequate
testing equipment
• Adequate equipment:
• for clamping the brake valve,
• for actuating the pedal with ° graduation.
• Soapsuds and brush
Additional documents:
(see www.wabco-auto.com => INFORM)
• Test Values 2/2:
to be found by entry of the product number in
INFORM
• Test Bench - Operating Instructions:
435 197 000 0
• General Repair and Test Hints:
815 010 109 3 en
815 020 109 3 de
815 030 109 3 fr
815 040 109 3 es
815 050 109 3 it
Check sequence
Perform test procedure as per specified se-
quence
Find test values P1 to P9 (pressure in bar) and
G1 to G5 (travel in °) in document "Test values
2/2".
Reservoir pressure is 10 bar max.
Before starting each test, ensure that the stop-
cocks are in their correct normal position (see
table 1).
Table 1: Normal position of cut-off cocks on the test bench
1. External inspection
Make sure that the retaining rings are mounted cor-
rectly. The brake valve could otherwise explode
while testing.
– Inspect the device for external visible damage.
– Visually inspect all the device's ports for block-
ages.
The pedal must be without clearence.
2. Preparations
– Fix device in clamping
equipment.
– Connect device to test
bench ports (see fig. 3).
Fig. 3 Test bench ports
Ensure that the plug-in connections on the test
bench and the device are securely inserted.
– Lock unused ports.
– Adjust pedal twice to check that it is without
clearance.
3. Check for leaks
Never install an untightened brake valve on the ve-
hicle.
3.1 Exhaust
From a non-actuated device no air must ex-
ceed from the exhaust.
– Vent ports 11 and 12 with P1.
Gauges 1 and 2 must indicate P1.
– Fully operate device several times.
– Wait until excess pressure has decreased.
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Cock A B C D F L V 2 3 4 6 7 11 12 21 22
open x x x
closed xxxxxx xxxxx x x
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CAUTION
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1234
11 21
22
12
CAUTION
WARNING
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461 317
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Brake Valve
© 2005 American Standard All rights reserved 461 317 961 3/09.2005
– Check exhaust of the device for tightness.
No leakages admissible.
3.2 Complete device
– Fix degree scale to device.
0-position of the pedal means 0-position of
the graduation at the same time.
– Adjust pedal to G1 (stop within device).
Gauges 3 and 4 must indicate P2.
– Cover complete device with soap and check
tightness.
No leakages admissible.
With soap bubbling the device is not tight.
– Re-adjust pedal to 0°.
Gauges 3 and 4 must indicate 0 bar.
4. Obtain maximum pressure
– Adjust pedal to G1 (stop within device).
Pressure must increase immediately.
Gauges 3 and 4 must indicate P2.
– Re-adjust pedal to 0°.
Gauges 3 and 4 must indicate 0 bar.
5. Graduability
In all pressure scopes incremental steps of
max. 0.2 bar must be possible.
6. Check pressure increase
– Operate pedal several times.
Gauges 3 and 4 must indicate immediate
pressure increase resp. decrease.
In accordance with the type of device, one cir-
cuit must have predominance.
6.1 Check sudden pressure increase
– Adjust pedal to G2.
Gauge 3 must indicate P3.
Gauge 4 must indicate P4.
6.2 Distance until venting of P5/P6
– Adjust pedal to G3.
Pressure must increase immediately.
Gauge 3 must indicate P5.
Gauge 4 must indicate P6.
6.3 Distance until venting of P7/P8
– Adjust pedal to G4.
Pressure must increase immediately.
Gauge 3 must indicate P7.
Gauge 4 must indicate P8.
6.4 Distance until venting of P2
– Adjust pedal to G1.
Pressure must increase immediately.
Gauges 3 and 4 must indicate P2.
– Re-adjust pedal to 0°.
Gauges 3 and 4 must indicate 0 bar.
7. Failure of circuit 1
– Vent port 11 to 0 bar.
Gauge 1 must indicate 0 bar.
Gauge 2 must indicate P1.
– Adjust pedal to G5.
Gauge 3 must indicate 0 bar.
Gauge 4 must indicate P9.
– Re-adjust pedal to 0°.
Gauges 3 and 4 must indicate 0 bar.
8. Completion of test
– Vent port 12 to 0 bar.
Gauges 1 and 2 must indicate 0 bar.
Do not disconnect the hose connections until you
have vented the device to 0 bar.
– Remove device from fixture.
– Clean device.
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CAUTION