Connect Door Arm To Trolley - B&D 1140 Instructions Manual

Chamberlain instructions garage door opener
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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 door) about 200mm as shown
in Figures 1, 2 and 3.
Figure 1:
• Fasten straight door arm section to outer trolley
with the 8mm x 25mm clevis pin. Secure the
connection with a ring fastener.
• Fasten curved section to the door bracket in the
same way, using the 8mmx 32mm clevis pin.
Figure 2:
• Bring arm sections together. Find two pairs of
holes that line up and join sections. If possible, use
the top and bottom holes on the curved door arm,
as shown.
Figure 3, Hole Alignment Alternative:
• If holes in curved arm are above holes in straight
arm, disconnect straight arm. Cut about 150mm
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
screws, 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 25. Trolley will re-engage automatically when
opener is operated.
HARDWARE SHOWN ACTUAL SIZE
Nut 8mm
Lock Washer 8mm
Clevis Pin
8mm x 25mm (Trolley)
Clevis Pin
8mm x 32mm (Door Bracket)
114A2845
Ring Fastener
Hex Screw
8mm x 20mm
23
Inner Trolley
Outer Trolley
Ring
Fastener
Door
Bracket
Clevis Pin
8mm x 32mm
Figure 1
Lock
Washers
8mm
Nuts
8mm
Door Bracket
Figure 2
Lock
Washers
8mm
Nuts
8mm
Cut This End
Figure 3
Clevis Pin
8mm x 25mm
Straight
Door Arm
Curved
Door Arm
Emergency
Release
Handle
Hex Screws
8mm x 20mm
Hex Screws
8mm x 20mm

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