Introduction; General Procedure; Troubleshooting Procedure; Special Tools - Snorkel SL26 Series Parts And Service Manual

TROUBLESHOOTING

INTRODUCTION

The following section on troubleshooting provides guidelines on the types of problems users may
encounter in the field. This helps to determine the cause of problems and provides suggestions for
proper corrective action.
Careful inspection and accurate analysis of the symptoms listed in the troubleshooting guide will
localize the trouble more quickly than any other method. This manual cannot cover all possible
problems that may occur. If a specific problem is not covered in this manual, call Snorkel for service
assistance.
Referring to section 2 and 5 will aid in understanding the operation and function of the various com-
ponents and systems helping in diagnosing and repairing of the machine.

GENERAL PROCEDURE

It is important to thoroughly study the hydraulic and electrical schematics in section 5.
• Check for loose connections and short circuits.
• Check/repair/replace each component that does not operate properly using the Truth table
listed under each machine function.
• Use the information provided in this section to help determine the cause of a fault.
NOTE: Spike protection diodes on components have been left out to eliminate confusion.

TROUBLESHOOTING PROCEDURE

1. Verify the problem: Perform a full function test from both the platform and chassis controls
and note all functions that are not operating correctly.
2. Narrow the possible causes: 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 suspected com-
ponents. Be sure to check connections to the battery negative terminal.
4. Repair or replace any component found to be faulty.
5. Verify that repair is complete: Do a full function test from both the platform and chassis con-
trols to verify that all functions are operating correctly and that the machine is performing to
specific values.

SPECIAL TOOLS

The following is a list of tools which may be required to perform certain maintenance procedures on
the SL-series work platforms.
• 0-45 bar (0-600 psi) hydraulic pressure gauge with adapter fittings.
• 0-250 bar (0-3500 psi) hydraulic pressure gauge with adaptor fittings
• Mini mess hydraulic test point fittings.
• Inclinometer
• Crimping tools, STD insullated and Deutsch
• EZcal calibrator (Snorkel part number: 504560-001)
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! W A R N I N G
When troublehooting, ensure that the work platform is resting on a rm,
level surface.
When performing any service that requires the platform to be raised, ensure
that the platform and booms are supported by a crane capable of support-
ing the load.
Unplug the machine or disconnect the battery when replacing or testing the
continuity of any electrical component.
!
SL26/30SL