©2012 4Front Engineered Solutions, Inc.
August 2012
6004751K — aFX
®
and aFX-S Dock Leveler — Safe
T
Frame
®
27
TroUbLeSHooTing,
continued
Dock Level
Support Leg
BDC
Chain
probLeM
poSSibLe caUSe
SoLUTion
6) Dock level support legs will not swing
fully forward
a) Check for binding or debris which may
be restricting leg.
b) Check below dock control chains to
assure chain has enough slack to allow
leg to swing forward. Adjust as required.
See Fig. 37.
7) Lip fails to extend
a) Check to make sure that the lip
extension mechanism is not bent or
binding. Be sure all parts are lubricated
properly. Lubricate as required. See Fig.
30.
b) Make sure all pins and pin retrainers are
in place and in good condition.
8) Lip extends but fails to stay in extended
position
a) Check to see that the lip extension
mechanism center bolt is straight and
free to rotate. See Fig. 35.
b) Check to see that the lip extends
far enough to allow the links and
connecting rod to align and then reach
an “over center” position.
a) Leg is binding.
b) Chain does not allow enough slack.
a) Lip extension mechanism is bent or
binding.
b) Pins are in incorrect position.
a) Lip extension mechanism center bolt is
bent or binding.
b) Links and connecting rod are not
aligned.
Fig. 37
