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© 2008, The Chamberlain Group, Inc.

01-32479B 

All Rights Reserved 

  7.   With gate open and operator in retracted position, clamp bracket to 

cross member, using C clamp. Adjust operator until assembly is 
level. Tighten in place at this time (Figures 4 & 6).

NOTE:

 All four mounting holes must be used.

  8.   Once brackets are clamped in place, remove clevis pins and 

washers to detach operator.

  9.   Mark reference points for bolt holes on fence posts and cross 

member. Be sure to mark holes in the vertical center of post 
bracket slots

 

(Figure 5).

 10.  Remove brackets from gate post and cross member.

 11.   Drill 13/32" holes in marked locations for gate post and 11/32" for 

gate bracket. 

 12.   Secure post bracket assembly to gate post with 3/8"-16 x 6" 

carriage bolts, flat washers, lock washers and nuts. Secure gate 
bracket to cross member with 5/16" carriage bolts, flat washers, 
lock washers and nuts.

 13.  Reattach operator to gate.

Figure 4

Figure 5

Figure 6

BATTERY REPLACEMENT

  1. Disconnect power to operator.

  2. Open the control box cover.

  3.  Remove all quick connect terminals in use to the control 

board. Remember location of all wire connections for 
reinstallation.

  4. Remove control board and mounting plate.

  5.  Disconnect terminals leads to both batteries.

  6.  Replace both batteries and connect red wires to the positive 

(+) terminals (red). Connect black wires to the negative (-) 
terminals (black).

  7.  Install control board and mounting plate.

  8.  Reconnect all quick connect terminals to the control board.

  9.  Close cover of control box.

 10.  Reconnect power to operator.

To avoid SERIOUS personal INJURY or DEATH from 
electrocution, DISCONNECT electrical power to operator 

BEFORE proceeding.

To reduce the risk of FIRE or INJURY to persons use ONLY 

Chamberlain part #K74-30762 for replacement batteries.

Gate in Open Position

LEVEL Horizontal Cross Member

Mark cross member through middle of 
gate bracket slots and drill 11/32" holes

Mark fence post through middle of 
bracket slots and drill 13/32" holes

Post Bracket Assembly

3/8"-16 x 6" Carriage Bolt

Operator MUST be level

Post Bracket 
Assembly

C Clamp

Gate in OPEN Position

Gate Bracket

C Clamp

Batteries

Control Board and 
Mounting Plate

Fence Post

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