Install The Belt - Chamberlain HD920EV Manual

Assembly

4 Install the belt

4.1
Pull the belt around the pulley and toward
the trolley. The ribbed side must contact
the pulley.
4.2
Hook the trolley connector into the
retaining slot on the trolley as shown.
4.3
With the trolley against the screwdriver,
dispense the remainder of the belt along
the rail length toward the motor unit and
around the sprocket. The sprocket teeth
must engage the belt.
4.4
Check to make sure the belt is not twisted.
Connect the trolley threaded shaft (H1)
with the master link (H5).
• Push pins of master link bar through
holes in end of belt and trolley threaded
shaft (H1).
• Push master link cap over pins and past
pin notches.
• Slide clip-on spring over cap and onto
pin notches until both pins are securely
locked in place.
4.5
Remove the spring trolley nut (H8) from
the threaded shaft (H1).
4.6
Insert the trolley threaded shaft (H1)
through the hole in the trolley.
H1
Threaded Shaft
with
H8
Spring
Trolley Nut
HARDWARE
Sprocket
H5
H5
H1
9
H5
Master Link