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Air compressor / General system
Troubleshooting flowchart, air compressor
B
Faults
05.11.2001
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Capitel
Docu-No.
Index
Date
Version
Page
Troubleshooting flowchart, air compressor
Text-module
Dual-line trailer advances on tractor when braking
Text-module
Dual-line trailer advances on
tractor when braking
I
Check pressure at tractor
coupling heads
Pressures at coupling heads
match
I
Measure braking force at trailer
brake cylinders; note proportio-
ning valve setting
I
Pressure (braking force) OK?
No
Set trailer proportioning valve,
check trailer brake system
Yes
Check trailer brake cylinders,
check trailer's mechanical wheel
brake
Storage pressure (red coupling
head) is incorrect
I
Check tank pressure
I
Tank pressure (8.1 bar)
No
See "Tank pressure incorrect"
fault scenario
Yes
I
Check braking force at trailer
brake cylinders; note proportio-
ning valve setting
Braking force (yellow coupling
head) not OK
I
- compressed-air advance control
system
Chapter 1070 Reg. E (Setting of
magnet for solenoid switch
S005/S006)
- check trailer valve, fit new one if
necessary