4.1.4 WOOD ARM INSTALLATION MODEL 1602 OPERATOR
Follow these instructions to install the 20-foot "wishbone" style wood arm onto the 1602 operator.
The 1602-arm assembly consists of two sections of 1 x 4 wood 14 feet long, one section of 1 x 4
wood 10 feet long, 24 steel counterbalance plates, and necessary hardware.
DOOR
Counter Balance Weight
1602
Operator
20 Ft. Max
14 Ft.
Use supplied hardware
to connect arms.
Figure 26
1. Be sure that the shaft rotation has been
checked as described in 4.1.1.
14
2. Install the two (2) arm mounting brackets
(p/n 1601-069) onto the arm hubs on each
side of the operator using eight (8) 3/8-16 x 2
hex head bolts and 3/8 lock washers. Do not
tighten the bolts at this time.
3. Slide the two 14 foot sections of the arm
through each of the arm mounting brackets.
The arms must extend at least 14 inches
behind the arm hubs to allow for the counter
balance plates to be installed (fig. 4.1.4B).
Figure 27
4. Tighten the bolts to secure the 14-foot arm
sections to the arm hubs.
5. Install the 10 foot arm between the two 14
foot arms using the supplied 1/4-20 x 2 1/2
hex bolts, 1/4 USS washers, and 1/4-20 nuts.
6. Install the counterweight plates on the ends
of the 14-foot arms using the supplied 5/16-
18 x 3 hex bolts and 5/16-18 flange nuts.
Secure the plates with six (6) sets of this
hardware. Note: Place two (2)
counterbalance plates on the inside of the
arms, the remainder on the outside of the
arms.
Hex Bolt 5/16-18 x 3
Figure 28
Hex Bolt 1/4-20 x 2 1/2
Nut 1/4-20
Washer 1/4 USS
Figure 29
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