Chamberlain B980C Manuel D'installation page 18

Clevis Pin 5/16"x1-1/4"
Ring Fastener
Ring Fastener
Lock Washer
Nut
Hex Bolt
Clevis Pin
5/16"x1-1/4"
HARDWARE
Clevis Pin 5/16"x1"
Hex Bolt 5/16"-18x7/8"
Lock Washer
5/16" -18
Nut 5/16"-18
Clevis Pin 5/16"x1"
Straight
Door Arm
(Groove
facing out)
Curved
Door Arm