18
Component Test Procedures
FTS-XX112L Symptom Diagnostic Table
Before start:
•
Check if the By-pass is off (optional, depending on the OEM).
•
Check if the air supply is dry and clean.
•
Check if there is air leakage on pneumatic system, like lose nipples, damaged hoses, etc.
•
Check if the vehicle has 8.0 bar or more.
•
Set the key at the on position, don't start the engine.
All range shifts happen during the neutral position, so perform all tests with the lever in Neutral position.
SYMPTOM
COMPONENT
PROCEDURE
OUTPUT
ACTION
Low range
doesn’t work
Pilot air line
•
Remove the air line P at
range valve
•
Select low range at the
knob
There is air supply
None
There isn’t air sup-
ply
•
Check if there is air
leakage through P air
line
•
Check if the knob is
supplying air to air
line P. If not, replace
the knob.
•
Remove the air line P at
range valve
•
Select high range at the
knob
There is air supply
None
There isn’t air sup-
ply
•
Check if P has been
replaced by SP
•
Check if the knob is
supplying air in high
range. If yes, replace
the knob.
IMPORTANT
Summary of Contents for TRTS4400
Page 1: ...Fuller Transmission Troubleshooting Guide TRTS4400 September 2009 FTS XX108LL FTS XX112L ...
Page 5: ...3 General Information General Information Transmission Models Included FTS XX108LL FTS XX112L ...
Page 31: ...29 Appendix Appendix Wiring Diagrams for All Models FTS XX108LL ...
Page 32: ...30 Appendix FTS XX112L ...
Page 33: ...31 Appendix Appendix Air System Overview FTS XX108LL ...
Page 34: ...32 Appendix ...
Page 35: ...33 Appendix Appendix ...
Page 36: ...34 Appendix FTS XX112L ...
Page 37: ...35 Appendix Appendix ...
Page 38: ...36 Appendix ...
Page 42: ...40 Appendix FTS XX112L ...
Page 43: ...41 Appendix Appendix ...
