Chamberlain WD822KD Connect Door Arm to Trolley, Figure, Figure, Figure, •Figure 1:, •Figure 2:, SECTIONAL DOORS ONLY, •Figure 3, Hole alignment alternative:

INSTALLATION STEP 12

Connect Door Arm to Trolley

Follow instructions which apply to your door type as illustrated below and on the following page.

SECTIONAL DOORS ONLY

•Make sure garage door is fully closed. Pull the emergency release handle to disconnect the outer trolley from the inner trolley. Slide the outer trolley back (away from the pulley) about 8" (20 cm) as shown in Figures 1, 2 and 3.

•Figure 1:

–Fasten straight door arm section to outer trolley with the 5/16"x1" clevis pin. Secure the connection with a ring fastener.

–Fasten curved section to the door bracket in the same way, using the 5/16"x1-1/4" clevis pin.

IMPORTANT: The groove on the straight door arm MUST face away from the curved door arm (Figure 4).

•Figure 2:

–Bring arm sections together. Find two pairs of holes that line up and join sections. Select holes as far apart as possible to increase door arm rigidity.

•Figure 3, Hole alignment alternative:

–If holes in curved arm are above holes in straight arm, disconnect straight arm. Cut about 6" (15 cm) from the solid end. Reconnect to trolley with cut end down as shown.

–Bring arm sections together.

–Find two pairs of holes that line up and join with bolts, lock washers and nuts.

•Pull the emergency release handle toward the opener at a 45° angle so that the trolley release arm is horizontal. Proceed to Adjustment Step 1, page 27. Trolley will re-engage automatically when opener is operated.

HARDWARE SHOWN ACTUAL SIZE

Nut 5/16"-18	Ring Fastener
Clevis Pin		Lock Washer 5/16"
5/16"x1-1/4" (Door Bracket)		Lock Washer 5/16"

Clevis Pin	Hex Bolt
5/16"x1" (Trolley)	5/16"-18x7/8"

Figure 1

Pulley	8" (20 cm) min.
	Trolley	Inner	Outer
	Stop Bolt		Outer
			Trolley
		Trolley
	Ring

			Clevis Pin
	Fastener		Clevis Pin
	Fastener		5/16"x1"
			5/16"x1"
			Emergency
			Release
	Door		Handle
	Bracket		Straight
			Straight
			Door Arm
		Curved Door Arm
Figure 2	Clevis Pin 5/16"x1-1/4"
Figure 2
Pulley	8" (20 cm) min.
	8" (20 cm) min.

Trolley

Stop Bolt Lock Washers 5/16"

Nuts 5/16"-18

Bolts

5/16"-18x7/8"

Door Bracket

Figure 3
Pulley	8" (20 cm) min.
	8" (20 cm) min.
	Trolley
	Stop Bolt Lock
		Washers
	Nuts	5/16"
	Nuts
	5/16"-18

		Bolts
		5/16"-18x7/8"
	Cut this end
Figure 4
CORRECT		INCORRECT
Straight		Straight
Straight		Door
Door		Door
Door	Curved	Arm
Arm	Curved	Arm
	Door	Curved
(Groove	Arm	Door
facing out)		Arm
facing out)