INTRODUCTION
The following procedure replaces the LA500 arm trolley nut,
should it become damaged by a car strike to the gate or other
similar event. This procedure is intended to be performed in a
clean shop by personnel confident in performing such
procedures.
Most of the LA500's internal drive train parts are factory
assembled under tight tolerances. Should any of these parts lose
alignment, reliable performance will be impacted. This
procedure's performance may impact the arm warranty coverage;
therefore, if the subject arm is still covered under product
warranty, please consider replacing the arm instead of performing
this procedure. Retain all hardware; it will be needed for
reassembly.
TOOLS NEEDED
•
LA500 control box with photoelectric sensors
•
Torque screwdrivers
•
Metric Allen wrench
•
12V, 7A battery
•
Flathead and Phillips head screwdrivers
•
Fastener (E-ring) pliers
•
Needle nose pliers
CARTON INVENTORY
Description
Trolley nut
ADDITIONAL PARTS INCLUDED
The following items are provided for additional damage that
occurred when the trolley nut was broken, or for parts that may
have become lost in the performance of this procedure.
Description
Pan Head Screw, M5
Split Washer, M6
Pan Head Screw, M6
Nut, M6
O-ring
Pin
Retaining Ring
Retaining Ring
Bearing
Trolley Plate
Bushing Retainer
Flat Washer, M6
Screw M6
Trolley Pin
Base plate
Arm Gasket
Screw, M5
QTY
1
QTY
2
3
1
3
1
1
1
1
1
2
1
2
2
1
1
1
12
TROLLEY NUT SERVICE KIT
To reduce the risk of INJURY or DEATH:
• DISCONNECT power and battery BEFORE installing or
servicing operator.
• See manual regarding maintenance and required safety
testing prior to servicing.
WARNING: This product can expose you to chemicals
including lead, which are known to the State of California to
cause cancer or birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.
INSTALLATION
OPEN THE ARM
1. Invert the arm to gain access to the top cover screws.
2. Remove the 12 top cover screws using a T25 torque
screwdriver or wrench.
3. Turn the arm back to normal operating orientation.
4. Carefully separate the top cover from the rest of the arm.
Note that the post bracket might fall out.
5. Place the top cover in a safe, clean location. Make sure that
the arm gasket does not get contaminated.
Top Cover
1
MODEL K75-39337
Post Bracket
Top Cover Screws
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