Upright SL20 Series, Service & Parts Manual

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Page 4-2
Troubleshooting - 4.2 - Troubleshooting / Special Tools
SL20
4.2 T
ROUBLESHOOTING
1. Verify your problem.
• Do a full function test from both platform controls and chassis controls and note all func-
tions 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. Remem-
ber to check wires and terminals between suspect components. Be sure to check connec-
tions 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
operating correctly and machine is performing to specified values
S
PECIAL
T
OOLS
Following is a list of tools which may be required to perform certain maintenance procedures on
the UpRight SL20.
• Flow Meter with Pressure Gauge
(UpRight P/N 067040-000)
• 0-1000 PSI Hydraulic Pressure Gauge with Adapter Fittings (UpRight P/N 014124-010)
• 0-3000 PSI Hydraulic Pressure Gauge with Adapter Fittings (UpRight P/N 014124-030)
• Adapter Fitting (UpRight P/N 063965-002)
• Inclinometer (UpRight P/N 010119-000)
• Crimping Tool (UpRight P/N 028800-009)
• Terminal Removal Tool
(UpRight P/N 028800-006)
A
DJUSTMENT
P
ROCEDURES
Hydraulic settings must be checked whenever a component is repaired or replaced. Refer to
Section 3 for procedures.
Remove counter balance valves and "bench test" them if they are suspect.
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.
Checking Pump Pressures
Remove hose from pump port and connect pressure tester.