Connect The Door Arm To The Trolley - LiftMaster ATS2113X 1/2 HP Manuel D'installation

INSTALLATION STEP 12

Connect the Door Arm to the Trolley

SECTIONAL DOORS ONLY
1. Close the door. Disconnect the trolley by pulling the
emergency release handle. Slide the outer trolley back
(away from the door) about 2" (5 cm).
2. 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).
3. 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.
4. 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 5/16"-
18x7/8" hex bolts, lock washers and nuts.
5. Proceed to Adjustment Step 1, page 21. Trolley will
re-engage automatically when operator is operated.
HARDWARE SHOWN ACTUAL SIZE
Nut 5/16"-18
Ring Fastener
Clevis Pin 5/16"x1"
Clevis Pin 5/16"x1-1/4"
Lock Washer 5/16"
Hex Bolt 5/16"-18x7/8"
20
Figure 1
Inner Trolley
Outer Trolley
Ring
Fastener
Door Bracket
Clevis Pin
5/16"x1-1/4"
Figure 2
Lock
Washers
5/16"
Nuts
5/16"-18
Door Bracket
Figure 3
Lock
Washers
5/16"
Nuts
5/16"-18
Figure 4
CORRECT
Straight
Door Arm
Curved
Door
(Groove
Arm
facing out)
Clevis Pin
5/16"x1"
Straight
Door Arm
Curved
Door Arm
Hex Bolts
5/16"-18x7/8"
Hex Bolts
5/16"-18x7/8"
Cut This End
INCORRECT
Straight
Door Arm
Emergency
Release
Handle
Curved
Door
Arm