1/9
© 2006 American Standard All rights reserved 973 002 981 3/05.2006
Explanation of Symbols
Important instructions, information or tips that you
should always observe.
•
List
–
Step
Carefully read through all the safety information be-
fore starting the testing.
General safety instructions
Fig. 1 Trailer Control Valve 973 002 ... 0 / functional symbol
Test instruction for device 973 002 ... 0
Equipment/tools required
• Test bench 435 197 000 0 or adequate testing
equipment (see fig. 3 and 4)
• Rake angle (with fixing nuts M8
(2x) for devices), see the adja-
cent diagram
• Two tees
• Soapsuds and brush
• Nozzle:
∅
1.3 mm
Additional documents required
The documents are available on the WABCO web-
site
http://www.wabco-auto.com
- simply enter
the product or document number in INFORM.
• Test Bench 435 197 000 0 - Operating Instructions
• General Repair and Test Information
Potential hazard situation which can
cause serious personal injury or death
if the safety instruction is not observed.
Potential hazard situations that can
cause minor or moderate personal inju-
ry if the safety instruction is not ob-
served.
Potential hazard situations that can
cause material loss if the safety in-
struction is not observed.
Only qualified skilled personnel with
specific system knowledge are author-
ized to perform the device testing at the
test bench.
Comply with the company and national accident pre-
vention/health & safety regulations.
Danger of bodily injury
Undo the screw plugs, hoses and
equipment parts only when the respec-
tive lines have been vented.
WARNING
CAUTION
CAUTION
!
!
WARNING
CAUTION
500
505
501
508
503
!
Test instruction for
Trailer Control Valves
973 002
(E)
