Section 4 • Repair Procedures
REV A
June 2007
4 - 74
GS-2668 RT • GS-3268 RT
Part No. 112657
15-1
Platform Overload System
How to 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.
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.
4 Open the side cover at the ground controls side
of the machine and locate the Electronic
Control Module (ECM) wire harness to platform
controls wire harness connection above the
hydraulic tank.
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-2668
975 kg
GS-3268
919 kg
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 4 m.
10 Rotate the safety arm away from the machine
and let it hang down.
11 Loosen the retaining ring and remove the switch
adjustment cover from the pressure switch.
Note: The pressure switch is located on the lower
lift cylinder.
12 Using a small slotted screwdriver, turn the
adjustment screw of the platform overload
pressure switch one-quarter turn into the
hydraulic line.
13 Push in the red Emergency Stop button to the
off position at the ground controls.
Platform Overload Components
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