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Chart LB - Requires More Clearance Between Gate and Wall
Requires more clearance between gate and wall. Recommended on retrofit installations when operator being replaced is other than LiftMaster
GATE LENGTH
22 ft.
2,500 lbs.max.
20 ft.
2,750 lbs. max.
18 ft.
3,250 lbs. max.
16 ft.
3,750 lbs. max.
14 ft.
4,500 lbs. max.
Install the Long Arm
1. Remove the existing output arm from the operator.
2. Attach the long arm to the operator using the long output arm
included in the kit.
Secure the Operator Arm
The length of the arm can be adjusted if necessary. If adjusting the
length, ensure that both sections of the arm are adjusted proportionally.
Use a clamp to temporarily hold the arm in place while determining the
correct measurements.
1. Weld the gate bracket to the gate.
2. Weld the short arm section. Plug/slot weld top and bottom.
3. Weld the long arm section. Plug/slot weld top and bottom.
NOTE: Completely weld around the outer tubing and bracket.
4. Adjust the nuts on the operator arm so the operator arm fits snug on
the output shaft yet still allows enough room to swivel (the handle
must be in a 90° position).
5. Tighten the handle by pushing it down. Test to make sure the
operator arm does not slip on the output shaft.
A
B
88" (2.24 m)
66.25" (1.68 m)
80" (2.03 m)
61.75" (1.57 m)
72" (1.83 m)
56.5" (1.44 m)
64" (1.63 m)
51.75" (1.31 m)
56" (1.42 m)
48.25" (1.23 m)
C
D
57.25" (1.45 m)
71" (1.80 m)
52" (1.32 m)
65.5" (1.66 m)
46.75" (1.19 m)
58.5" (1.49 m)
41.5" (1.05 m)
52.5" (1.33 m)
37" (.94 m)
50" (1.27 m)
1
1
E
F
15" (38.1 cm)
3" (7.6 cm)
15" (38.1 cm)
3" (7.6 cm)
15" (38.1 cm)
3" (7.6 cm)
15" (38.1 cm)
3" (7.6 cm)
15" (38.1 cm)
3" (7.6 cm)
2
Existing
Output Arm
3
5
4
®
.
DISTANCE
73.75" (1.87 m)
59.25" (1.51 m)
64" (1.63 m)
59.25" (1.51 m)
55.75" (1.42 m)
Long Output Arm
Long Arm
Assembly
2
Manual release handle
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