Upright LX31 User manual

SERVICE & PARTS
MANUAL
LX 31/41
Electric Models
Serial Numbers 3300 to current
When contacting UpRight for service or parts
information, be sure to include the MODEL and
SERIAL NUMBERS from the equipment name-
plate. Should the nameplate be missing, the
SERIAL NUMBER is also stamped on top of the
chassis above the front axle pivot.
067448-001
12/99 K
Stamped
Serial Number
Call Toll Free in U.S.A.
1-800-926-LIFT
PARTS: 1-888-UR-PARTS
PARTS FAX: [phone]
UpRight, Inc.
1775 Park Street
Selma, California 93662
TEL: [phone]
FAX: [phone]
PARTS: 1-888-UR-PARTS
PARTS FAX: [phone]

LX31/41 Electric Work Platform i
F ORWARD
HOW TO USE THIS MANUAL
This manual is divided into 6 sections. The section
number printed at the top corner of each page can be
used as a quick reference guide.
Special information
Indicates the hazard or unsafe practice will
result in severe injury or death.
Indicates the hazard or unsafe practice could
result in severe injury or death.
Indicates the hazard or unsafe practice could
result in minor injury or property damage
NOTES: Give helpful information.
WORKSHOP PROCEDURES
CAUTION: Detailed descriptions of standard work-
shop procedures, safety principles and service oper-
ations are not included. Please note that this manual
does contain warnings and cautions against some
specific service methods which could cause personal
injury, or could damage a machine or make it unsafe.
Please understand that these warnings cannot cover
all conceivable ways in which service, whether or not
recommended by UpRight, Inc., might be done, or of
the possible hazardous consequences of each con-
ceivable way, nor could UpRight Inc. investigate all
such ways. Anyone using service procedures or
tools, whether or not recommended by UpRight Inc.,
must satisfy themselves thoroughly that neither per-
sonal safety nor machine safety will be jeopardized.
All information contained in this manual is based on
the latest product information available at the time of
printing. We reserve the right to make changes at
any time without notice. No part of this publication
may be reproduced, stored in retrieval system, or
transmitted, in any form by any means, electronic,
mechanical, photocopying, recording, or otherwise,
without the prior written permission of the publisher.
This includes text, figures and table.
Introduction &
Specifications 1.0
General description and machine
specifications.
Machine Preparation &
Operation 2.0
Information on how to operate the work
platform and how to prepare it for operation.
Maintenance 3.0
Preventative maintenance and service
information.
Troubleshooting 4.0
Causes and solutions to typical problems.
Schematics 5.0
Schematics and valve block diagram with
description and location of components.
Illustrated Parts
Breakdown 6.0
Complete parts lists with illustrations.
DANGER
!
!
WARNING
!
!
CAUTION
!
!

ii LX31/41 Electric Work Platform
F ORWARD
NOTES:

LX31/41 Electric Work Platform I
T ABLE OF C ONTENTS
Forward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
How to Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . i
Special information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i Workshop Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . i
S ECTION 1
Introduction & Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 General Description. . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Elevating Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Control Module . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 1-1
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 Purpose Of Equipment . . . . . . . . . . . . . . . . . . . . . . 1-1
1.4 Special Limitations . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
S ECTION 2
Machine Preparation & Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 Pre-Operation and Safety Inspection. . . . . . . . . . . 2-2
System Function Inspection . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Travel With Platform Lowered . . . . . . . . . . . . . . . . . . . 2-4
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Raising and Lowering the Platform . . . . . . . . . . . . . . . 2-4
Travel with Work Platform Elevated . . . . . . . . . . . . . . . 2-4
Emergency Lowering . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Parking Brake Release . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.4 Preparation for Shipment . . . . . . . . . . . . . . . . . . . . 2-6
2.5 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
PRESERVATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
BATTERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.6 Raising the Platform . . . . . . . . . . . . . . . . . . . . . . . . 2-6
From the Platform Controls . . . . . . . . . . . . . . . . . . . . . 2-6
From the Chassis Controls . . . . . . . . . . . . . . . . . . . . . 2-6
2.7 Lowering the Platform. . . . . . . . . . . . . . . . . . . . . . . 2-7
From the Platform Controls . . . . . . . . . . . . . . . . . . . . . 2-7
From the Chassis Controls . . . . . . . . . . . . . . . . . . . . . 2-7
Emergency Lowering . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.8 Design Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.9 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . 2-8
2.10 Fold Down Guardrails . . . . . . . . . . . . . . . . . . . . . 2-10
Erection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Double Deck Fold Down Procedure . . . . . . . . . . . . . 2-11
Erection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
S ECTION 3
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
General Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Date Code Identification on Hoses. . . . . . . . . . . . . 3-1
3.3 Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.4 Deutsch Connectors . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Male Connector (Plug) . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Female Connector (Receptacle) . . . . . . . . . . . . . . . . . 3-3
Releasing Locking Fingers . . . . . . . . . . . . . . . . . . . . . . 3-3
Crimping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Removing Contact from
Heavy Duty Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.5 Preventative Maintenance. . . . . . . . . . . . . . . . . . . . 3-4
Preventative Maintenance Table Key . . . . . . . . . . . . . 3-5
Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Preventative Maintenance Report . . . . . . . . . . . . . . . . 3-5
3.6 Blocking Elevating Assembly. . . . . . . . . . . . . . . . . 3-6
Brace Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Brace Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.7 Battery Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Battery Inspection and Cleaning . . . . . . . . . . . . . . . . . 3-7
3.8 Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Grease Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Steering Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Torque Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Hydraulic Oil And Filter . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Fluid Level . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Oil and Filter Replacement . . . . . . . . . . . 3-8
3.9 Setting Hydraulic Pressures. . . . . . . . . . . . . . . . . . 3-9
Steering Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.10 Switch Adjustments . . . . . . . . . . . . . . . . . . . . . . 3-10
Proportional Control Adjustment . . . . . . . . . . . . . . . . 3-10
Proportional Drive Control . . . . . . . . . . . . . . . . . . . . . 3-10
Platform Down Limit Switches . . . . . . . . . . . . . . . . . . 3-11
Tilt Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

II LX31/41 Electric Work Platform
T ABLE OF C ONTENTS
3.11 Hydraulic Manifold . . . . . . . . . . . . . . . . . . . . . . . 3-12
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Cleaning and Inspection . . . . . . . . . . . . . . . . . . . . . . .3-12
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.12 Hydraulic Power Unit . . . . . . . . . . . . . . . . . . . . . 3-14
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.13 Hydraulic Brakes . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Brake Seal Replacement . . . . . . . . . . . . . . . . . . . . . . 3-15
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.14 Drive Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Removal. . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Installation . . . . . . . . . . . . . . . . . . . . . . . 3-16
Pump Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Removal. . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Installation . . . . . . . . . . . . . . . . . . . . . . . 3-16
Drive Motor Brushes . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.15 Torque Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3.16 Torque Hub Seal Replacement . . . . . . . . . . . . . . 3-18
Roll And Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Roll Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Leak Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Pressing Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Hub Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Main Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.17 Cylinder Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
3.18 Steering Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
3.19 Lift Cylinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
3.20 Torque Specifications . . . . . . . . . . . . . . . . . . . . . 3-26
Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
Hydraulic Components . . . . . . . . . . . . . . . . . . . . . . . . 3-26
S ECTION 4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Troubleshooting Electrical Schematics . . . . . . . . 4-2
4.3 Troubleshooting Hydraulic . . . . . . . . . . . . . . . . . . 4-6
4.4 Troubleshooting the MOS90 . . . . . . . . . . . . . . . . . 4-7
When a Flash Error occurs . . . . . . . . . . . . . . . . . . . . . . 4-7
Step 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Step 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.5 Using the Calibrator. . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.6 Calibrator Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.7 Upright Traction Controller display . . . . . . . . . . . . 4-9
4.8 MOS90 Fault Finding Flow Charts . . . . . . . . . . . . 4-10
4.9 ACTIVATING "TEST" . . . . . . . . . . . . . . . . . . . . . . . 4-16
S ECTION 5
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.2 Hydraulics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 5.3 Component Identification . . . . . . . . . . . . . . . . . . . . 5-8
S ECTION 6
Illustrated Parts Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9

LX31/41 Electric Work Platform III
L IST OF F IGURES
Forward
SECTION 1
Introduction & Specifications
Figure 1-1: Work Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
SECTION 2
Machine Preparation & Operation
Figure 2-1: Chassis Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Figure 2-2: Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Figure 2-3: Tilt Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Figure 2-4: Emergency Lopwering Knob . . . . . . . . . . . . . . . . . . . . . . 2-5
Figure 2-5: Parking Brake Release Button . . . . . . . . . . . . . . . . . . . . . 2-5
Figure 2-6: Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Figure 2-7: Fold Down Guardrails . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Figure 2-8: Fold Down Guardrails (Double Deck) . . . . . . . . . . . . . . 2-11
SECTION 3
Maintenance
Figure 3-1: Deutsch Connector Kit, Small . . . . . . . . . . . . . . . . . . . . . 3-2
Figure 3-2: Deutsch Connector Kit, Large . . . . . . . . . . . . . . . . . . . . . 3-2
Figure 3-3: Plugs and Receptacles, Deutsch Connectors . . . . . . . . . . 3-2
Figure 3-4: Locking Finger, Deutsch Connector . . . . . . . . . . . . . . . . . 3-3
Figure 3-5: Heavy Duty Deutsch Connector . . . . . . . . . . . . . . . . . . . . 3-3
Figure 3-6: Blocking Elevating Assembly . . . . . . . . . . . . . . . . . . . . . . 3-6
Figure 3-7: Lubrication Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Figure 3-8: Hydraulic Oil Tank and Filter . . . . . . . . . . . . . . . . . . . . . . 3-8
Figure 3-9: Hydraulic Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Figure 3-10: Valve Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Figure 3-11: Rotary Control Adjustment, Upper Control Box . . . . . . 3-10
Figure 3-12: Platform Down Limit Switch . . . . . . . . . . . . . . . . . . . . 3-11
Figure 3-13: Tilt Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Figure 3-14: Hydraulic Manifold, Exploded View . . . . . . . . . . . . . . . 3-13
Figure 3-15: Hydraulic Power Unit . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Figure 3-16: Rear Axle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Figure 3-17: Brake Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Figure 3-18: Replacing Drive Motor Brushes . . . . . . . . . . . . . . . . . 3-16
Figure 3-19: Torque Hub Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Figure 3-20: Measuring Hub End Play . . . . . . . . . . . . . . . . . . . . . . . 3-19
Figure 3-21: Torque Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Figure 3-22: Steering Cylinder Cross Section . . . . . . . . . . . . . . . . . 3-23
Figure 3-23: Lift Cylinder Cross Section . . . . . . . . . . . . . . . . . . . . . 3-24
SECTION 4
Troubleshooting
Figure 4-1: MOS90 Calibrator LED Segments . . . . . . . . . . . . . . . . . . 4-7
Figure 4-2: MOS90 17 Way Connector Pinout Designation . . . . . . . 4-15
Figure 4-3: Upright Tachometer Board . . . . . . . . . . . . . . . . . . . . . . 4-16
SECTION 5
Schematics
Figure 5-1: Electrical Schematic - 067447-001 . . . . . . . . . . . . . . . . . 5-3
Figure 5-2: Lower Control Box Electrical Diagram . . . . . . . . . . . . . . . 5-4
Figure 5-3: Lower Control Box Assembly . . . . . . . . . . . . . . . . . . . . . . 5-5
Figure 5-4: Hydraulic Schematic - 067446-000 . . . . . . . . . . . . . . . . . 5-7
Figure 5-5: Relay Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Figure 5-6: Valve Manifold, Exploded View . . . . . . . . . . . . . . . . . . . . 5-8
Figure 5-7: Brake Valve Manifold, Exploded View . . . . . . . . . . . . . . . 5-8
SECTION 6
Illustrated Parts Breakdown

IV LX31/41 Electric Work Platform
L IST OF T ABLES
Forward
SECTION 1
Introduction & Specifications
Table 1-1: Work Platform Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
SECTION 2
Machine Preparation & Operation
Table 2-1: Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
SECTION 3
Maintenance
Table 3-1: Preventative Maintenance Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Table 3-2: Torque Specifications for Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
Table 3-3: Torque Specifications for Hydraulic Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
SECTION 4
Troubleshooting
Table 4-1: Trouble Shooting Guide: Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Table 1: Troubleshooting Guide: Hydraulic Schematics . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Table 4-2: Calibrator Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Table 4-3: Calibrator Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
SECTION 5
Schematics
Table 5-1: Electrical Schematic - 067447-001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Table 5-2: Hydraulic Schematic - 067446-000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
SECTION 6
Illustrated Parts Breakdown

LX31/41 Electric Work Platform 1-1
Section 1
I NTRODUCTION & S PECIFICATIONS
1.1 INTRODUCTION
Purpose
The purpose of this service and parts manual is to
provide instructions and illustrations for the operation
and maintenance of the Work Platform manufactured
by UpRight, Inc. of Selma, California.
Scope
The manual includes procedures for proper opera-
tion, maintenance, adjustment, and repair of this
product as well as recommended maintenance
schedules and troubleshooting.
1.2 GENERAL DESCRIPTION
The LX 31/41 Work Platform consists of the platform,
controller, elevating assembly, power module, control
module, and chassis.
Platform
The platform has a reinforced steel floor, 43.5 inch
(1.11 m) high guardrails with midrail, 6 inch (152mm)
toeboards and an entrance gate at the rear of the
platform. The guardrails can be folded down for
access through doors or for shipment.
DO NOT use the maintenance platform without
guardrails properly assembled and in place.
Controller
The controller contains the controls to operate the
machine. It should be hung on the front, left, or right
guardrail, but may be hand held if necessary. To
operate the machine, the interlock lever must be
depressed to operate any function. A complete
explanation of control functions can be found in Sec-
tion 2.
Elevating Assembly
The platform is raised and lowered by the elevating
assembly; a three (LX31), or four (LX41) section scis-
sor assembly powered by a single stage lift cylinder.
The hydraulic pump, driven by the batteries, powers
the cylinder. Solenoid operated valves control raising
and lowering.
Power Module
The power module contains the batteries, hydraulic
pump, and hydraulic reservoir.
Control Module
The control module contains the hydraulic valve man-
ifold, horn/alarms, volt/hour meter, electrical terminal
strips, batteries, and chassis control panel. A com-
plete explanation of the chassis control functions is
found in Section 2.
Chassis
The chassis is a structural frame that supports all the
components of the LX31/41 Work Platform.
1.3 PURPOSE OFEQUIPMENT
The objective of the LX31/41 Work Platform is to pro-
vide a quickly deployable, self propelled, variable
height work platform to elevate personnel and materi-
als to overhead work areas and be driven over nor-
mal terrains.
1.4 SPECIAL LIMITATIONS
Travel with the platform raised is limited to a creep
speed range.
Elevating of the Work Platform is limited to firm, level
surfaces only. Any degree of slope greater than 2°
will lockout the elevating circuits and sound a warning
alarm.
The elevating function shall ONLY be used when
the work platform is level and on a firm surface.
The work platform is NOT intended to be driven
over uneven, rough or soft terrain when elevated
1
2
45
36
1. Platform
2. Controller
Assembly
3. Elevating
Assembly
4. Power Module
5. Control
Module
6. Chassis
Figure 1-1: Work Platform
WARNING
!
!
DANGER
!
!

1-2 LX31/41 Electric Work Platform
I NTRODUCTION & S PECIFICATIONS
Section
1.5
1.5 SPECIFICATIONS
Table 1-1: Work Platform Specifications
ITEM LX31 LX41
Platform Size (Inside Toeboards)
Standard 143.38 in. x 70 in. [3.64 m x 1.78 m] 143.38 in. x 70 in. [3.64 m x 1.78 m]
w/ Extension 179.38 in. x 68 in. [4.56 m x 1.73 m] 179.38 in. x 68 in. [4.56 m x 1.73 m]
Max. Platform Capacity
Standard 2000 lbs. [907 kg] 1,500 lbs. [680 kg]
w/ Extension 2000 lbs. [907 kg] 1,500 lbs. [680 kg]
on Extension 500 lbs. [227 kg] 500 lbs. [227 kg]
Max. No. of occupants
Standard 8 people 6 people
on Extension 2 people 2 people
Height
Working Height 37 ft. [11.4 m] 47 ft. [14.33 m]
Max. Platform Height 31 ft. [9.45 m] 40 ft. 6 in. [12.34 m]
Min. Platform Height 56.25 in. [1.43 m] 65.25 in. [1.66 m]
Dimensions
Weight, Standard 9,920 lbs. [4,500 kg] 11,260 lbs. [5,108 kg]
Weight, w/ Extension 10,350 lbs. [4,695 kg] 11,690 lbs. [5,303 kg]
Overall Width 90 in. [2.29 m] 90 in. [2.29 m]
Overall Height 99.75 in. [2.53 m] 108.75 in. [2.76 m]
Overall Length, Standard 160.5 in. [4.08 m] 160.5 in. [4.08 m]
Driveable Height 31 ft. [9.45 m] 40 ft. 6 in. [12.34 m]
Surface Speed
Platform Lowered 0 to 3.1 mph [0 to 5.0 km/h] 0 to 3.1 mph [0 to 5.0 km/h]
Platform Raised 0 to 0.3 mph [0 to .48 km/h] 0 to 0.3 mph [0 to .48 km/h]
System Voltage 48 Volt DC 48 Volt DC
Hydraulic Tank Capacity 28.3 Gallons [107.13 l] 28.3 Gallons [107.13 l]
Maximum Hydraulic System Pressure 3000 psi [206.8bar] 3000 psi [206.8bar]
Hydraulic Fluid
Normal use (>32 oF [0 oC]) ISO #46 ISO #46
Low Temp use (-10 to 32 oF [-23 to 0 oC]) ISO #32 ISO #32
Lift System One Single Stage Lift Cylinder One Single Stage Lift Cylinder
Lift Speed Raise, 50 sec./Lower, 48 sec. Raise, 50 sec./Lower, 48 sec.
Drive Control Proportional Proportional
Control System Joystick Controller with Interlock Lever and Thumb Rocker
Steering; Speed & Function Selector Switches and Emer-
gency Stop Button
Joystick Controller with Interlock Lever and Thumb Rocker
Steering; Speed & Function Selector Switches and Emer-
gency Stop Button
Horizontal Drive 2 Wheel, Electric Motors 2 Wheel, Electric Motors
Tires 9.5-16.5 NHS 8 Ply, 75psi [5.2 bar] (except polyfilled) 9.5-16.5 NHS 8 Ply, 75psi [5.2 bar] (except polyfilled)
Parking Brakes Two, Spring Applied, Hydraulic Release, Multiple Disc Two, Spring Applied, Hydraulic Release, Multiple Disc
Turning Radius (inside) 48 in. [1.22 m] 48 in. [1.22 m]
Maximum Gradeability 30% [16.7] 30% [16.7]
Wheel Base 115.75 in. [2.94 m] 115.75 in. [2.94 m]
Guardrails 43.5 in. [1.1 m] high, Fold Down with Gate 43.5 in. [1.1 m] high, Fold Down with Gate
Toeboard 6 in. [152 mm] High 6 in. [152 mm] High
NOTE: Specifications subject to change without notice. Hot weather or heavy use may reduce perfor-
mance. Meets or exceeds all applicable requirements of OSHA and ANSI A92.6-1999.

LX13/41 Electric Work Platform 2-1
Section 2
M ACHINE P REPARATION & O PERATION
NEVER operate the machine without first surveying the work area for surface hazards such as holes, drop-offs, bumps and debris.
NEVER operate the machine if all guardrails are not properly in place and secured with all fasteners properly torqued.
SECURE and lock gate after mounting platform.
KEEP all body parts clear of outriggers when extending or retracting (outrigger equipped machines only).
NEVER use ladders or scaffolding on the platform.
NEVER attach overhanging loads or increase platform size.
LOOK up, down and around for overhead obstructions and electrical conductors.
DISTRIBUTE all loads evenly on the platform. See the back cover for maximum platform load.
NEVER use damaged equipment. (Contact UpRight for instructions. See toll-free phone number on back cover.)
NEVER change operating or safety systems.
INSPECT the machine thoroughly for cracked welds, loose hardware, hydraulic leaks, damaged control cable, loose wire connec-
tions and wheel bolts.
NEVER climb down elevating assembly with the platform elevated.
NEVER perform service on machine while platform is elevated without blocking elevating assembly.
NEVER recharge battery near sparks or open flame; batteries that are being charged emit highly explosive hydrogen gas.
AFTER USE secure the work platform against unauthorized use by turning key switch off and removing key.
NEVER replace any component or part with anything other than original UpRight replacement parts without the manufacturer's con-
sent. California Proposition 65 Warning
Gasoline and diesel engine exhaust and some of their constituents are known to the State of California to cause cancer,
birth defects, and other reproductive harm.
NEVER operate the machine
within ten feet of power lines.
THIS MACHINE IS NOT
INSULATED
NEVER elevate or drive
elevated on uneven slopes or
soft ground or elevate the
platform unless the platform
is level
NEVER sit, stand or climb
on guardrail or midrail
Warning
All personnel shall carefully read, understand and follow all safety rules, operating instructions, and the Scaffold Industry
Association’s Manual of Responsibilities (ANSI A92.6) before operating or performing maintenance on any Upright
Safety Rules

2-2 LX13/41 Electric Work Platform
M ACHINE P REPARATION & O PERATION
Section
2.1
2.1 INTRODUCTION
This manual covers the Electric model of the LX
Series Work Platforms. This machine operates on a
48 volt battery powered system.
DO NOT use a machine that is damaged or
malfunctioning. Tag and remove the unit from
service until it is repaired.
2.2 PRE-OPERATION AND SAFETY
INSPECTION
Carefully read, understand and follow all safety rules,
labels, and operating instructions, then perform the
following steps each day before use.
Perform a complete visual inspection of the entire
unit prior to operating.
1. Open panels and check hydraulic components
and hoses for damage or leaks. Check electrical
components and wiring for damage or loose con-
nections.
2. Inspect chassis, axles, hubs, and steering linkage
for damage, deformation, buckeled paint, loose or
missing hardware, and cracked welds.
3. With platform fully lowered, check the hydraulic
oil level sight gauge on the hydraulic tank . Add
ISO #46 hydraulic oil if necessary.
4. Check that fluid level in all batteries is correct
(See Battery Maintenance in Section 3).
5. Check that all guardrails are in place. Insure that
gate operates freely and latches securely.
6. Check tires for damage. Check tire pressure; 75
psi (5.2 bar) if equipped with pneumatic tires.
7. Carefully inspect the entire work platform for
damage such as cracked welds or structural
members, loose or missing parts, oil leaks, dam-
aged cables or hoses, and loose connections.
System Function Inspection
STAND CLEAR of the work platform while per-
forming the following checks.
Before operating the work platform survey the
work area for surface hazards such as holes,
drop-offs, bumps and debris.
Check in ALL directions, including above the
work platform, for obstructions and electrical
conductors.
Protect control console cable from possible
damage while performing checks.
Hour Meter
Raise
Lower
Emergency
Stop Button
Platform/
Chassis/Brake
Release
Switch
Brake
Release
Figure 2-1: Chassis Control Panel
CAUTION
!!
WARNING
!
!

Lift/Drive Switch
Drive Enable
Indicator
Speed Range Switch
Interlock Lever
Steering Switch
Control Lever
Emergency
Stop Button
LX13/41 Electric Work Platform 2-3
M ACHINE P REPARATION & O PERATION
Section
2.2
Figure 2-2: Controller
1. Unhook controller from guardrail. Firmly grasp
controller handle in such a manner that the inter-
lock lever can be depressed, while performing the
following checks from the ground.
2. Turn platform controller key switch clockwise to
ON.
3. Position drive/lift switch to DRIVE position. Drive
enable indicator light will be illuminated.
4. With the speed range switch first in LOW SPEED
and then again in HIGH SPEED depress the
interlock lever and slowly push the control lever to
FORWARD then REVERSE positions to check
for speed and directional control. The farther you
push or pull the control lever the faster the
machine will travel.
5. Push steering switch RIGHT then LEFT to check
for steering control.
6. Hook controller on guardrail in original position.
7. On chassis controls, turn key switch to Chassis.
8. From lower controls, push chassis raise button to
elevate platform while pushing the tilt sensor
(Figure 2-3) off of level. The platform should only
partially elevate and the tilt alarm should sound. If
the platform continues to elevate and/or there is
no alarm STOP and remove the machine from
service until it is repaired.
9. Release the tilt sensor and fully elevate platform.
10. Visually inspect the elevating assembly, lift cylin-
der, cables and hoses for damage or erratic oper-
ation. Check for missing or loose parts.
11. Lower the platform partially by pushing in on the
chassis lower switch, and check operation of the
audible lowering alarm.
12. Open the chassis emergency lowering valve
(Figure 2-4) to check for proper operation by pull-
ing and holding the knob out. Once the platform
is fully lowered, close the valve by releasing the
knob.
13. On chassis controls, turn key switch to platform.
14. Mount the platform making sure the gate is
latched.
15. Turn platform controller key switch clockwise to
ON. Position drive/lift switch to LIFT.
16. Depress the interlock lever and slowly push the
control lever to RAISE to raise the platform, fully
actuate the control lever to check proportional lift
speed. Elevate the platform to 12 feet (3.7 m).
17. Slowly pull control lever to DOWN position to
lower platform. Check that lowering alarm
sounds.
18. Turn platform controller key switch to OFF, push
the emergency stop button and dismount the
platform.
19. Close and secure module covers.
Tilt Sensor
Figure 2-3: Tilt Sensor

2-4 LX13/41 Electric Work Platform
M ACHINE P REPARATION & O PERATION
Section
2.3
2.3 OPERATION
Before operating work platform, ensure that the pre-
operation and safety inspection has been completed,
any deficiencies have been corrected and the opera-
tor has been thoroughly trained on this machine.
Travel With Platform Lowered
1. Verify chassis emergency stop switch is in the
ON position (pulled out), the drive enable indica-
tor light is on, and that the platform/chassis
switch is on platform.
NOTE: If the drive enable indicator light is off,
verify that the platform is fully lowered.
2. After mounting platform, close and latch gate.
Check that guardrails are in position and properly
assembled with fasteners properly torqued.
3. Check that route is clear of persons, obstructions,
holes and drop-offs and surface is capable of
supporting the wheel loads.
4. Check clearances above, below and to the sides
of the platform.
5. Pull controller emergency stop button out to ON
position.
6. Set the drive/lift speed range switch to LOW
SPEED.
7. Grasp the control lever so the interlock lever is
depressed (releasing the interlock lever cuts
power to controller). Slowly push or pull the con-
trol lever to forward or REVERSE to travel in the
desired direction. The farther you push or pull the
control lever from center the faster the machine
will travel.
8. While moving, push the drive/lift speed range
switch to HIGH SPEED for travel on level sur-
faces or to LOW SPEED for climbing grades or
traveling in confined areas.
Steering
1. Push the steering switch RIGHT or LEFT to turn
the wheels. Observe the tires while maneuvering
to insure proper direction.
NOTE: Steering is not self-centering. Wheels
must be returned to the straight ahead
position by operating the steering switch.
Raising and Lowering the Platform
1. Position the drive/lift switch to LIFT.
2. While holding the control lever so the interlock
lever is depressed, push the control lever slowly
to UP to raise the platform. Pushing the control
lever farther increases the lift speed.
3. Lower the platform by pulling back on the control
lever until the platform is fully lowered.
Travel with Work Platform Elevated
Travel with platform elevated ONLY on firm and level
surfaces.
NOTE: The work platform will travel at reduced
speed when in the elevated position, and
only when the front axle is parallel with the
rear axle.
1. Check that the route is clear of persons, obstruc-
tions, holes and drop-offs, surface is level and
capable of supporting the wheel loads.
2. Check clearances above, below and to the sides
of platform.
3. Position the drive/lift switch to the DRIVE posi-
tion.
4. Push the control lever to FORWARD or
REVERSE for the desired direction of travel.
If the machine quits driving and the tilt alarm sounds,
immediately lower the platform and move the
machine to a level location before re-elevating the
platform.

LX13/41 Electric Work Platform 2-5
M ACHINE P REPARATION & O PERATION
Section
2.3
Emergency Lowering
The emergency lowering knob is located at the front
of the machine at the base of the scissor assembly
(Figure 2-4).
Emergency
Lowering
Knob
Figure 2-4: Emergency Lowering Knob
1. Open the emergency lowering valve by pulling on
the knob and holding it.
2. Once the platform is fully lowered, release the
knob to close the valve.
3. After Use Each Day
4. Ensure that the platform is fully lowered.
5. Park the machine on level ground, preferably
under cover, secure against vandals, children or
unauthorized operation.
6. Turn the key switch to OFF and remove the key to
prevent unauthorized operation.
Parking Brake Release
Perform the following only when the machine will not
operate under its own power and it is necessary to
move the machine or when winching onto a trailer to
transport.
Never release brakes if machine is on a slope.
Hook machine to towing vehicle before releas-
ing brakes.
1. Turn Platform/Chassis/Brake Release switch to
Brake Release position (Figure 2-5). Alarm will
sound.
2. Momentarily push brake Release button.
3. The machine will now roll when pushed or pulled.
4. For normal operation, turn Platform/Chassis/
Brake Release switch to Platform position.
Never operate work platform with the parking
brakes released. Serious injury or damage
could result.
Brake
Release
Figure 2-5: Parking Brake Release Button
WARNING
!
!
WARNING
!
!

2-6 LX13/41 Electric Work Platform
M ACHINE P REPARATION & O PERATION
Section
2.4
2.4 PREPARATION FOR SHIPMENT
1. Grease all the grease fittings (see Section 3).
2. Fully lower the platform.
3. Uncouple Anderson connectors to disconnect
batteries.
4. Band the controller to the front guardrail.
5. Band the elevating linkage to the frame.
2.5 STORAGE
No preparation for storage is required when the work
platform is in normal usage. Regular maintenance
procedures should continue to be performed (see
Section 3).
If the work platform is to be placed in long term stor-
age (dead storage), follow the recommended preser-
vation procedures, below.
PRESERVATION
1. Clean painted surfaces. If the paint is damaged,
repaint.
2. Fill the hydraulic tank to operating level, fluid will
be visible at the Sight Gauge. DO NOT fill the
hydraulic tank while the platform is elevated.
NOTE: DO NOT drain the hydraulic system prior
to long term storage.
3. Coat exposed portions of extended cylinder rods
with a preservative such as multipurpose grease
and wrap with barrier material.
4. Coat all exposed unpainted metal surfaces with
preservative.
BATTERIES
1. Disconnect the batteries negative (-) cables and
secure to the chassis.
2. Disconnect the remaining battery leads and
secure to the chassis.
3. Remove the batteries and place in alternate ser-
vice.
2.6 RAISING THE PLATFORM
From the Platform Controls
1. Select platform at the Chassis/Platform Switch.
2. Select lift at the Drive/Lift Switch.
3. Push the Control Handle forward.
a. This will energize;
• the Drive/Lift Relay
• the Cutout Relay (the Cutout Relay will only
stay energized if the Level Sensor is level
within 2°)
• the Up Relay (completing the circuit to the
Up Solenoid Valve)
• and the Proportional Valve
b. This will allow oil flow;
• through the Proportional Valve (regulating
the speed to a rate which is proportional to
the angle of Control Handle deflection)
• through the Lift Valve
• through the Down Valve
• and to the Lift Cylinder (raising the Platform).
From the Chassis Controls
1. Select chassis at the Chassis/Platform Switch,
2. Press the Up Button
a. This will energize
• the Proportional Valve (regulating speed
through 10 ohm resistor)
• and the Lift Valve.
b. This will allow oil flow
• through the Proportional Valve (regulating
the speed to a fixed rate which is set by the
10 ohm resistor)
• through the Lift Valve
• through the Down Valve
• and to the Lift Cylinder (raising the Platform).

LX13/41 Electric Work Platform 2-7
M ACHINE P REPARATION & O PERATION
Section
2.7
2.7 LOWERING THE PLATFORM
From the Platform Controls
1. Select platform at the Chassis/Platform Switch.
2. Pull the Control Handle backward.
a. This will energize;
• the Down Relay (completing the circuit to the
Down Solenoid Valve)
• and the Down Alarm Relay (completing the
circuit to the Down Alarm).
b. This will sound the down alarm, and allow oil to
flow;
• out of the Lift Cylinder
• through the Down Orifice (regulating the
descent speed)
• through the Down Valve
• through the Lift Valve
• and out to the Hydraulic Reservoir.
From the Chassis Controls
1. Select chassis at the Chassis/Platform Switch.
2. Press the Down Button
a. will energize;
• the Down Relay (completing the circuit to the
Down Solenoid Valve)
• and the Down Alarm Relay (completing the
circuit to the Down Alarm).
b. This will sound the down alarm, and allow oil to
flow;
• out of the Lift Cylinder
• through the Down Orifice (regulating the
descent speed)
• through the Down Valve
• through the Lift Valve
• and out to the Hydraulic Reservoir.
Emergency Lowering
The Down Alarm WILL NOT SOUND when lowering
the platform with the Emergency Lowering Knob.
Pull out on the Emergency Lowering Knob to
mechanically open the Down Valve. This will allow oil
to flow;
• out of the Lift Cylinder
• through the Down Orifice (regulating the descent
speed)
• through the Down Valve
• through the Lift Valve
• and out to the Hydraulic Reservoir.
2.8 DESIGN FEATURES
The LX31/41 has the following features to insure safe
operation:
1. The Lift Valve will not energize unless the chassis
is level.
2. A warning alarm sounds and Drive Valves are de-
energized, if the work platform should become
unlevel while elevated.
3. A motion alarm sounds when the work platform is
lowering.
4. The platform descent rate is controlled by an ori-
fice. The Lift Cylinder is equipped with a holding
valve to prevent descent should a leak develop.
5. The drive speed is limited to “creep” speed when
operating the work platform while elevated.
6. Holding brakes are automatically engaged when
the Drive Valves are de-energized from the Con-
troller or from a loss of power.
7. The Platform and Chassis controls are each
equipped with an Emergency Stop Switch.
8. Up and Down Buttons are located in the Control
Module on the chassis for lifting and lowering the
work platform from ground level.
9. The Down Valve can be operated manually by
means of a cable linkage in the event of powered
function failure.
10. Dynamic braking, and runaway protection are
provided by the use of Counterbalance Valves in
the drive system.
11. A Level Sensor is used to sense when the
machine is unlevel, disabling lift functions, and
drive when elevated.

2-8 LX13/41 Electric Work Platform
M ACHINE P REPARATION & O PERATION
Section
2.9
2.9 CONTROLS AND INDICATORS
The controls and indicators for operation of the LX31/
41 Electric Work Platform are shown in Figure 2-6.
The name and function of each control and indicator
are listed in Table 2-1. The index numbers in
Figure 2-6 correspond to the index numbers in
Table 2-1. The operator shall know the location of
each control and indicator and have a thorough
knowledge of the function and operation of each
before attempting to operate the unit.
Table 2-1: Controls and Indicators
Controller/Platform Chassis
No. Index Name Function No. Index Name Function
1Key Switch Turn key fully RUN to provide power to the
Interlock Switch 9Emergency Stop Switch Push red button to cut power to all controls (off). Turn clockwise to provide power (on).
2Emergency Stop
Switch Push red button to cut power to all controls (off). Turn clockwise to provide power (on). 10 Raise Button Press button to lift the platform.
3Control Lever Move joystick forward or backwards to control
Drive and Lift Valves proportionally or Down
Valve depending on position of Drive Lift
Switch.
11 Lower button Press button to lower the platform.
12 Platform Chassis
Switch Turn switch to the left to enable platform controls. Turn switch to the right to enable
chassis controls.
4Steering Switch Movingthemomentaryrocker switchRIGHT or
LEFT steers the work platform in that direction.
Although the Steering Switch is self centering,
the steering system is not. The wheels must
be steered back to straight.
13 Brake release
Button Press button to release the Parking Brake.
14 Down Alarm* Sounds an audible signal while platform is
lowering during normal operation. If the
Emergency Lowering Valve is used, the alarm
does not sound.
5Drive Speed/
Torque Selector
Switch
Provides two speed/torque ranges, in forward
or reverse.
HIGH SPEED = Low Torque, and
HIGH TORQUE = Low Speed
Tilt Alarm* Sounds an audible signal when the platform is
elevated and on a slope of 2° side to side of
fore and aft.
6Drive/Lift Switch Selecting DRIVE allows the work platform to
move foward or reverse. Selecting LIFT allows
the work platform to raise or lower.
15 Hour Meter
(optional) Tracks the number of hours of engine powered operation.
7Interlock Lever
Switch Provides power to the Controller powered functions, only when depressed, preventing
accidental activation of the Controller.
16 Brake release
Pump Releases the Parking Brake allowing the machinetobe movedin theeventpower islost
or for winching onto a trailer. See Section 3.
8Drive Enable
Indicator Illuminates when drive is enabled, turns off when drive is disabled. 17 Emergency Lowering Valve Pull out to lower the platform in the event of
powered function failure.
* Down Alarm and Tilt Alarm are the same unit with different inputs.