Page 4-1
SL20
Se
ct
ion
4
T
ROUBLESHOOTING
4.1 I
NTRODUCTION
The following section on troubleshooting provides guidelines on the types of problems users may
encounter in the field, helps determine the cause of problems, and suggests 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 possi-
ble problems that may occur. If a specific problem is not covered in this manual, call our toll free
number for service assistance.
Referring to Section 2.0 and 5.0 will aid in understanding the operation and function of the vari-
ous components and systems of the SL20 and help in diagnosing and repair of the machine.
G
ENERAL
P
ROCEDURE
Thoroughly study hydraulic and electronic schematics in Section 5. Check for loose connections
and short circuits. Check/repair/replace each component in the Truth Table which is listed under
each machine function which does not operate properly.
Use the charts on the following pages to help determine the cause of a fault in your UpRight
SL20.
NOTE:
Spike protection diodes at
components have been left out of
the charts to eliminate
confusion.
W A R N I N G
!
When troubleshooting, ensure that the work platform is resting on a firm, level surface.
Unplug the machine or disconnect the battery when replacing or testing the continuity of
any electrical component.
U
P
R
IGHT
USA
Tel: 1-559-891-5200
FAX: 1-559-896-8931
U
P
R
IGH T
I
RELAND
Tel: 353-1-202-4100
FAX: 353-1-202-4105
Summary of Contents for SL20 Series
Page 1: ......
Page 10: ...Page viii Table of Contents List of Tables SL20 Work Platform NOTES ...
Page 12: ...Page 1 2 Introduction 1 2 General Description SL20 NOTES ...
Page 33: ...Page 3 11 Maintenance 3 11 Setting Hydraulic Pressures SL20 NOTES ...
Page 61: ...Page 5 7 Schematics Hydraulic Schematic SL20 Figure 5 2 Plugs 4 ...
Page 62: ...Page 5 8 Schematics SL20 NOTES ...
Page 65: ...Page 6 3 Illustrated Parts Breakdown Final Assembly SL20 Drawing 2 of 3 ...
Page 66: ...Page 6 4 Illustrated Parts Breakdown Final Assembly SL20 Drawing 3 of 3 ...
Page 69: ...Page 6 7 Illustrated Parts Breakdown Chassis Assembly SL20 Drawing 1 of 2 ...
Page 70: ...Page 6 8 Illustrated Parts Breakdown Chassis Assembly SL20 Drawing 2 of 2 ...
Page 73: ...Page 6 11 Illustrated Parts Breakdown Linkage Assembly SL20 ...
Page 75: ...Page 6 13 Illustrated Parts Breakdown Control Module Assembly SL20 ...
Page 79: ...Page 6 17 Illustrated Parts Breakdown Control Valve Assembly SL20 ...
Page 91: ...Page 6 29 Illustrated Parts Breakdown Label Kit Installation SL20 ...
Page 93: ...Page 6 31 Illustrated Parts Breakdown Label Kit German SL20 ...
Page 95: ...Page 6 33 Illustrated Parts Breakdown Label Kit French SL20 ...
Page 97: ...Page 6 35 Illustrated Parts Breakdown Label Kit Spanish SL20 ...
Page 102: ...Page 6 40 Illustrated Parts Breakdown SL20 NOTES ...
Page 103: ......