Chamberlain Power Drive Assembly & Installation Manual page 7

2
Remove Fasteners from
Top of Motor Unit
Bolt
5
Run Cable Through
Cut-Out Window
A2
Chain and Cable Do NOT remove
Chain/Cable
from box
Cable Loop
B5
Idler Bolt
To avoid serious damage to opener, ONLY use bolts/fasteners
mounted in top of motor unit.
3
Attach Rail to Motor Unit
Bolt
6
Install Idler Pulley
A2
Bolt
Chain
Pulley
and Cable
Washer
B5
Idler Bolt
B2
Lock Washer
B7
Nut
ALL HARDWARE SHOWN ACTUAL SIZE
B3
Lock Nut
7
WARNING
CAUTION
4
Attach Chain Spreader
Hex Screws
8-32x7/16"
A3
Chain
Spreader
7
Attach Cable to Front
of Trolley
Rail
A2
Chain and Cable
Nut
B4
Master Link
Clip-On Spring
A12
Idler Pulley
Cable Loop
B7
Nut B2
Lock Washer
Do NOT remove
Chain/Cable
from box
Cable
Loop
B4
Master
Link Bar
B4
Master Link