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Assembly Step 4 I
Install the Belt & Set the Belt Tension
I
1. Drop the notched side of the trolley clip into the
retaining slot on top of the trolley. (Figure 1)
2. Grasp the clip connector at the end
of the belt and slip it through the belt //f_'_,'_
pulley bracket from behind, around
the pulley and toward the trolley. _,,/_
3. Fasten the belt clip connector to the _/LI
..... Belt Clip/
trolley chp with a mas[er InK: Connector
• Push pins of master link bar
through holes in trolley clip and belt
clip connector.
• Push master link cap over pins and
onto pin notches.
• Slide clip-on spring over cap and
onto pin notches until both pins are
securely locked in place.
4. With the trolley against the
screwdriver, dispense the belt along
the rail and around the opener
sprocket. The sprocket teeth must
engage the belt. (Figure 2)
5. Use the second master link to connect the belt to
the flat end of the trolley threaded shaft. (Figure 1)
Check to make sure the belt is not twisted.
Slip Belt Clip
Connector
through
Pulley Bracket
from this direction
and attach
to trolley clip
6. Remove the screwdriver.
Figure 2 Opener Sprocket
Figure 1
Master Link Master
Clip-On Spring
Clip Connector
Belt
Pulley
Th re_T_l°_YhaN_tj "/
Master
Unk Bar
Pin
Figure 4
Trolley
Threaded
" . Shaft
Ring
Square End
7. Insert the trolley threaded shaft through the hole
in the trolley.
8. Hold the belt at the trolley shaft to avoid twisting
as you thread the spring/trolley nut by hand on
the shaft until finger tight against the trolley.
(Figure 3) Do not use any tools.
9. Insert a screwdriver tip into one of the nut ring
slots and brace it firmly against the trolley.
(Figure 4)
10. Place a 7/16" open end wrench on the square
end. Roate about 1/4 turn until the spring
releases and snaps the nut ring against the
trolley. (Figure 5)
This extends the spring for optimum belt tension.
Figure 3
Trolley
_rolley
Thr2 2d
Trolley Nut
Figure 5
AFTER RELEASE
10