Treadwall
®
Service Bulletin #8: Replacing the Treadwall
control line.
Fig. 1
shows the upper pulley bar from the front. Above the middle pulley there is an access
hole that can be reached from the top of the machine, behind the pulley bar shroud as shown.
Another access hole is on the right side of the pulley bar and its location is shown in both
pictures.
If the old line is still in place, tie the new line to it and pull it through.
If the old line has been removed, you will have to make a special tool from a wire coathanger.
Straighten the coathanger and make a small hook in one end.
Take the new line and pass it up through the pulley bar at point (a) and straight up through the
access hole. Tie a small knot in this end of the line. Now take your coathanger tool and push it
into the side access hole and over the center pulley until you can hook the control line and pull it
over to the right and out of the hole. It is then an easy job to work the line back over the other
pulley and into the frame pulley as shown in
Fig. 2
a c c e s s h o l e ( b e hi n d p a n e l )
T
R
E
A
D
W
A
L
L
p u l l e y s
a c c e s s h o l e
( o n s i d e )
F i g . 1
pulley bar
(a)
Run the line as shown in
Fig. 2 and tie off at the
welded loop. When the
brake lever is at its resting
position, the ring on the
control line should be just
an inch or two under the
pulley bar as shown in Fig.
1.
pulley
pulley
access hole
Brake
valve
Resistance
valve
Drain plug
Reservoir
Filler cap
Valve arms
Fig. 2
Summary of Contents for Treadwall AM
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