Installation 15

BG790: WISHBONE COUNTERWEIGHTED ARM

Attach left and right arms to the arm hub flanges as shown and described below.

1Bolt counterweights to ends of arms clamps as shown. Use Caution lifting 57lb. weights.

2Bend and fasten the two arms together as shown in Figure 10.

If an extension arm is required, sandwich the extension arm between the two halves of the wishbone arm before bolting together. See Arm Fabrication starting on page 12 for extension arm preparation.

3Assemble the two 3/8" threaded rods to the arms for center support as shown in Figure 10.

4Turn on power and test the gate.

Wishbone Arm - Arc of Travel

Ensure adequate clearance for travel of arm.

01-G0674F11

Figure 9

WARNING

Be prepared for gate to start when you turn the power on.

Wishbone

(4) 1/2-13 x 2 1/4”

Arm

Bolts

(4) 1/2” Flatwashers

(4) 1/2” Lockwashers

(4) 1/2” - 13 Hex Nuts

01-G0674F12

Figure 10

Doc 01-G0674 Rev E