Platform Overload Components; Platform Overload System - Genie GS-3390 Service Manual

July 2007
REV A
12-1

Platform Overload System

Calibrate the Platform Overload
System (if equipped)
On machines with platform overload systems,
proper calibration is essential to safe machine
operation. An improperly calibrated platform
overload system could result in the system failing
to sense an overloaded platform. The stability of
the machine is compromised and it could tip over.
Note: Be sure the hydraulic oil level is between the
full and add marks on the oil level indicator.
Note: Perform this procedure with the machine on
a firm, level surface that is free of obstructions.
All models:
1 Models with outriggers: Deploy the outriggers
and level the machine.
2 Apply a thin layer of dry film lubricant to the
area of the chassis where the scissor arm wear
pads make contact.
3 Disconnect the platform controls from the
machine at the platform.
Part No. 72863

Platform Overload Components

GS-3390 • GS-4390 • GS-5390
Section 4 • Repair Procedures
4 Open the large ground control panel door and
locate connector joining the Electronic Control
Module (ECM) wire harness and the platform
controls wire harness.
Note: This connection is just below the ground
controls.
5 Tag and disconnect the platform controls wire
harness from the ECM wire harness.
6 Securely connect the platform controls to the
ECM wire harness.
7 Using a suitable lifting device, place a test
weight, corresponding to the maximum load as
indicated on the capacity indicator decal, in the
center of the platform floor. Secure the weight
to the platform. Refer to the chart below.
GS-3390
GS-4390
(most models - refer to capacity indicator decal)
GS-4390
(some models - refer to capacity indicator decal)
GS-5390
8 Turn the key switch to platform control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls. Start the engine.
9 Raise the platform to approximately 6 m.
10 Release the safety arm latch, lift the safety arm
and rotate to a vertical position. Lock the safety
arm in position.
1878 kg
1286 kg
1421 kg
1410 kg
4 - 123