Upright LX31 Service Manual

Technical Support Section 3 - Troubleshooting
Page 3-2 067448-023 LX31/LX41 Electric and Bi-Energy Work Platform | European Specifications
3-2 T
ECHNICAL
S
UPPORT
Technical Support is available by telephone of FAX.
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USA
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Tel: 1-800-926-5438
FAX: 1-559-662-4785
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Tel: +353-1-620-9300
FAX: +353-1-620-9301
3-3 G
ENERAL
P
ROCEDURE
Thoroughly study hydraulic and electronic schematics in theSchematicssection. Check for loose con-
nections and short circuits. Check/repair/replace each component in the Truth Table which is listed under
each machine function which does not operate properly.
Determine whether the problem is mechanical (interference), electrical or hydraulic. Some functions
require power at more than one solenoid.
Use the charts on the following pages to help determine the cause of a fault in your UpRight work platform
NOTE:
Spike protection diodes at components have been left out of the charts to eliminate confusion.
3-4 T
ROUBLESHOOTING
P
ROCEDURES
1. Verify your problem.
• Do a full function test from both platform controls and chassis controls and note all functions that
are not operating correctly.
2. Narrow the possible causes of the malfunction.
• Use the troubleshooting guide to determine which components are common to all circuits that are
not functioning correctly.
3. Identify the problem component.
• Test components that are common to all circuits that are not functioning correctly. Remember to
check wires and terminals between suspect components. Be sure to check connections to battery
negative.
4. Repair or replace component found to be faulty.
5. Verify that repair is complete.
• Do a full function test from both platform and chassis controls to verify that all functions are oper-
ating correctly and machine is performing to specified values
3-5 A
DJUSTMENT
P
ROCEDURES
• Hydraulic settings must be checked whenever a component is repaired or replaced.
• Connect a pressure meter of appropriate range to the test port located on the hydraulic manifold.
• Correct pressure settings are listed in the hydraulic schematic.
3-6 C
HECKING
P
UMP
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RESSURES
• Remove hose from pump port, and connect pressure tester.

Upright LX31 Specifications

General

Brand	Upright
Model	LX31
Category	Lifting Systems
Language	English