Mighty Mule FM143 User Manual

AUTOMATIC

GATE LOCK

®

IMPORTANT: Before you install the automatic gate lock be sure your gate is level, moves freely on
its hinges, and does not bind or drag against the ground.

Installation Manual

PLEASE NOTE: Because of the various mounting applications, no mounting hardware is
provided with the GTO Automatic Gate Lock. All necessary mounting hardware can be obtained

from your local hardware store; all other hardware is provided.

This manual shows two examples of the most common installations, and should provide insight
into most other applications. If you have any questions during installation, please call (850)
575-4144 for technical support.

RB909 rev-6/23/05

13

© GTO, Inc. 2000

Before You Start...

AUTOMATIC

GATE LOCK

®

B

A

C

D

E

F

G

H

I

J

K

L

For the GTO Automatic Gate Lock to work properly, the gate must close firmly and engage the lock catch against
the lock receiver. Achieving optimal closure may require slight adjustments to the gate opener settings.

Installing the lock with the Mighty Mule® E-Z Gate® Opener may require slight movement of the stroke
adjustment and changes to the obstruction sensitivity. See Setting the Gate Closed Position in your Mighty
Mule Installation Manual for information on these adjustments.

Installing the lock with a GTO/PRO gate opener may require slight movement of the stroke adjustment and
changes to the obstruction sensitivity (see your GTO/PRO Installation Manual for information on these
adjustments).

If you are installing the lock on a Push-to-Open gate (gate opens out), the lock must be installed on the outside
of the gate. Depending upon the installation, the gate post may need to be "pocketed" to accommodate the lock
receiver. Contact the GTO Technical Service Department at [phone] for assistance.

Be sure you have all the parts:

A - Lock with 20' of low voltage wire
B - Lock Receiver
C - Clevis Pin
D - Locking Cap
E - Lock Board Battery Lead Wires
F - White Wire
G - Lock Control Board
H - 2 Double Spade Tongue terminals
I - 6 nylon cable ties
J - Wire Connector
K - Lock Keys (for manual release)
L - Lock Decal

(motor lead to lock board)

What else do you need?

Mounting hardware is not included. Read these instructions completely and review the installation examples to
determine the mounting hardware required for your application.

NOTE: The GTO Lock is designed to use mounting hardware up to 5/16" in diameter. For a more secure installation,
use lock washers and lock nuts on all mounting hardware.

For most IRON or ALUMINUM TUBE gates you will need:
Carriage bolts, washers, and nuts for the lock and receiver. (see Illustration B, page 3)

For most CHAIN LINK gates you will need:
U-Bolts, saddles or carriage bolts, washers and nuts for the lock.
Bolts, washers, and nuts for the receiver. (see Illustration C, page 3)

The installation has two parts:

(1) Mounting The Lock and Lock Receiver
(2) Connecting the Control Boards

Once you have the necessary mounting hardware, you can begin the installation.

1

Installing The Gate Lock

Receiver pin hole and lock slot must line up.
Check alignment with pin out of receiver.

Lock and receiver must be level
and aligned with opener

.

NOTE: The Automatic Gate Lock can be installed on single and dual gate systems. Use the appropiate
instructions for the system you have - SINGLE GATE (below) or DUAL GATES (page 4).

Single Gate Installation

Disconnect gate opener by removing hairpin clip and clevis pin from the gate bracket end of the opener.
Disconnecting the opener will allow the gate to swing freely during installation of the gate lock.

Step 1: With the gate in the closed position, determine the best location for the lock and lock receiver. The lock

and receiver must be level and aligned with the opener. Also, the lock should have a solid surface or
cross member to provide stability.

Step 2: Clamp receiver and lock together (with receiver pin hole and lock slot aligned) against the gate post,

mark their positions to drill receiver holes (see Illustration B and C, page 3). The receiver must be
mounted with carriage bolts, not U-bolts, to allow lock to seat properly. Fasten the receiver to the gate
post.

Step 3: Recheck the lock's position and alignment, then mark its position for drilling holes. Drill the holes on

gate supports through the slots in the lock bracket. U-bolts and saddles can be used to mount the lock
on chain link gate supports. Secure the lock to the gate. Install clevis pin and locking cap by placing
clevis pin through slots in lock receiver and hammering the clevis pin into the locking cap (see Illustra-

tion D), secure the lock bracket and check the alignment again.

Illustration A

2

Clevis Pin

Receiver

Locking Cap

Lock

U-bolts, saddles & nuts

(not provided)

Added cross member
to support lock from
force of slammimg shut

Remember to check the alignment and mark positions before
drilling holes in fence post

.

Illustration B

Clevis Pin

Receiver

Locking Cap

GTO Automatic
Gate Lock

Carriage bolts, washers, and nuts

(not provided; size of

fasteners depends on the gate)

Remember to check the alignment and mark positions
before drilling holes in fence post and gate.

Iron or Aluminum Tube Fence and Gate Installation

Illustration C

Chain Link Fence and Gate Installation

Illustration D

Locking Cap

Assembly

3