Instructions / Assembly

8
Assembly
STEP 4 Install the belt
1. Pull the belt around the idler pulley and toward the trolley.The ribbed side mustcontact the
pulley.
2. Hook the trolley connector into the retaining slot on the trolley.(a)
3. With the trolley against the screwdriver, dispense the remainder ofthe beltalong the rail
toward the motor unit around the sprocket.The sprocketteeth must engage the belt. (b)
4. Thread the inner nutand lockwasher onto the trolley thread shaft (c). Checkto make sure the
beltis nottwisted.
5. Insert the trolley threaded shaft through the hole in the trolley.Be sure the beltis not
twisted. (c)
6. Loosely thread the outer nutonto the trolley threaded shaft.
7. Remove the screwdriver.
Trolley Connector
Retaining Slot
c.
Threaded
Shaft
Outer
Nut
Front Rail
Section
(TO DOOR)
Inner
Nut
Lock
Washer
b.
a.
Sprocket
Idler
Pulley