Connect Door Arm To Trolley (Sectional Door) - Craftsman 139.53491SRT Owner's Manual

Installation Step 13
Connect Door Arm to Trolley
Follow instructions which apply to your door type
as illustrated below and on page 27.
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 2" as shown in Figures 1, 2 and 3.
Figure 1:
• Fasten straight door arm section to outer trolley with a
clevis pin. Secure the connection with a ring fastener.
• Fasten curved section to the door bracket in the same
way as shown.
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 1
Inner Outer
Trolley Trolley
Straight
Curved
Door Arm
Clevis
Pin
Figure 2
Door
Bracket
Emergency
Handle
Screws
5/16"-18x7/8"
Hole Alignment Alternative
Figure 3:
• If holes in curved arm are above holes in straight arm,
disconnect straight arm. Cut about 6" 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.
Figure 3
Screws
5/16"-18x7/8"
end
Hardware Shown Actual Size
@ @ o
Nut 5/16"- 18 Lockwasher 5/16" Ring Fastener
7!,,,,,,,,,,,D { oD
Hex Screw Clevis Pin
5/16"- 18 x 7/8" 5/16" x 1"
Proceed to Adjustment Step 1, page 28.
Trolley will re-engage automatically when the
opener is operated.
26