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Page Title:
FIFTH WHEEL WILL NOT UNLOCK WHEN DISCONNECTING TRAILER FROM TRACTOR |
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 TM 9-2320-366-20-3
TM
INITIAL SETUP
Equipment Conditions
Tools and Special Tools
Engine shut down (TM 9-2320-366-10-1).
Tool Kit, Genl Mech (Item 46, Appendix C)
Gun, Lubricating (Item 16, Appendix C)
START
KNOWN INFO
TEST OPTIONS
1.
Primary and secondary
Refer to fifth wheel
release handles in lock
adjustment procedure
Is fifth wheel properly
position.
(para 14-11).
adjusted?
POSSIBLE PROBLEMS
REASON FOR QUESTION
Fifth wheel adjustment.
Fifth wheel may not
Fifth wheel lubrication.
unlock if it requires
Loose or broken fifth
adjustment.
wheel spring cushions
NO
or bushings.
Release handles broken
Adjust fifth wheel
or disconnected.
YES
(para 14-11).
KNOWN INFO
TEST OPTIONS
2.
Primary and secondary
Visual inspection
release handles in lock
REASON FOR QUESTION
Is fifth wheel properly
position.
Fifth wheel may not
lubricated?
Fifth wheel is properly
unlock if it requires
adjusted.
lubrication.
POSSIBLE PROBLEMS
Fifth wheel lubrication.
Loose or broken fifth
Lubricate fifth
NO
wheel spring cushions
wheel (Appendix H).
or bushings.
Release handles broken
or disconnected.
YES
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