Chamberlain WD822KS User Manual download pdf (Page 25)

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.

• 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.

Trolley

Stop Bolt

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Chamberlain WD822KS User Manual Page 25