This parts manual provides lubrication information for an RT3020 rider pallet truck. Key points include: - The truck uses grease for lubrication, with greasing intervals of every 50-200 operating hours depending on the component. - The hydraulic system uses hydraulic oil with a recommended operating temperature range of -20°C to +50°C. - A lubrication chart lists all components and specifies the type of grease and lubrication interval for each.

1. RT3020 Series
Parts Manual
U1-Parts.p65 02.05.02, 13:55
1

2. 1
Printed in Germany
TABLE OF CONTENT

3. 3
M1.0-0000-0003
3
TABLE OF CONTENT
MP-RT3020-Rev.2-GB 04/02 • Printed in Germany M/P-IDX-2910
REV. 2 04/02
Table of Content
MA – SAFETY PAGE SERIAL NR. CUT REV.
Safety Symbols used in the Manual....................................... 7 ................................................................ Rev.1 01/01
ITD – INTRODUCTION PAGE SERIAL NR. CUT REV.
General .................................................................................. 11
Model-Number........................................................................ 12
P-1.1 – LUBRICATION PAGE SERIAL NR. CUT REV.
Lubrication Type ..................................................................... 15
Grease Intervals .................................................................... 16
DIA – ELECTRICAL DIAGRAMS PAGE SERIAL NR. CUT REV.
Diagrams/Control Circuit ........................................................ 19
Diagrams/Control Circuit-Steering Motor ................................ 20
M/P – HYDRAULIC PAGE SERIAL NR. CUT REV.
Hydraulic Schematic .............................................................. 23
SECTION 1 – COVERS PAGE SERIAL NR. CUT REV.
Covers ................................................................................... 28
Caster Wheel ......................................................................... 30
SECTION 2 – HYDRAULIC PARTS PAGE SERIAL NR. CUT REV.
Tube/Hose Layout .................................................................. 34
Pumpen Motor and Pump ...................................................... 36
SECTION 3 – DRIVE UNIT PAGE SERIAL NR. CUT REV.
Gearbox ................................................................................. 40
Drive Motor ............................................................................ 42 .............................................................. Rev.1 04/02
SECTION 4 – ELEKTICAL PAGE SERIAL NR. CUT REV.
Elektrical Parts ...................................................................... 46,48,50
Wiring Harness....................................................................... 52,54
SECTION 6 – STEERING PAGE SERIAL NR. CUT REV.
Steering ................................................................................. 58,60 ......................................................... Rev.1 04/02
SECTION 7 – MAST/LIFT STRUCTURE PAGE SERIAL NR. CUT REV.
Lift Structure .......................................................................... 64 .............................................................. Rev.1 04/02
SECTION 8 – CYLINDER PAGE SERIAL NR. CUT REV.
Lift Cylinder............................................................................ 68 .............................................................. Rev.1 04/02

4. 4
M1.0-0000-0004
4
TABLE OF CONTENT
MP-RT3020_Rev.2-GB 04/02 • Printed in Germany
M/P-IDX-2910
SECTION 10 – MISCELLANEOUS SERVICE INF. PAGE SERIAL NR. CUT REV.
Battery Trolley ........................................................................ 72
This Manual contains 74 Pages

5. 5
Printed in Germany
SAFETY

6. 7
M1.0-0000-0007
7
SAFETY
Printed in Germany M/P-MA-0000
REV. 1 4/00
OPTION
Safety Symbols used in the
Manual
To help guide you through the manual and to highlight
particular danger areas, we have used graphic illustra-
tions:
DANGER
This symbol indicates life-threatening risks
● Failure to comply with this notice may
result in severe or fatal injuries to yourself
or other people.
WARNING
This symbol indicates the risk of serious
injury and/or serious material damage.
● Failure to comply with this notice may
result in severe injuries to yourself or other
people and/or serious material damage.
CAUTION
This symbol indicates the risk of minor
injury and/or minor material damage.
● Failure to comply with this notice may
result in minor injuries to yourself or other
people and/or minor material damage.
INFORMATION
Contains additional information with
supplementary notes and hints.
OPTION
These items relate to optional features not
supplied with the standard version.
General Maintenance and Repair
Safety Notes
DANGER
Read the safety notices in the truck Mainte-
nance and Operator's Manuals.
● Failure to do so could result in severe or
fatal injuries to maintenance personnel and/
or other persons.
Motorised vehicles can be dangerous if maintenance
and service are neglected. For this reason maintenance
and inspections must be carried out at regular short
intervals by trained personnel working to approved
company guidelines.
DANGER
Follow all national/local safety regulations
applicable for maintenance work, e.g. for
work on higher levels.
● Failure to do so could result in severe or
fatal injuries to maintenance personnel and/
or other persons.
Maintenance and Repair
1. Maintenance work must only be carried out in
accordance with the test and maintenance pro-
gram contained in the present Maintenance
Manual and any applicable service notices.
2. Only qualified and authorised personnel may carry
out work on the truck.
3. Always keep fire extinguishers in good working
condition. Do not approach fluid levels or leaks
with a naked flame.
4. To clean, use a non flammable, non combustible
cleaning solution which is groundwater-neutral.
Only carry out cleaning with an oil separator.
Protect the electrical system from dampness.
5. Keep the service area clean, dry and well-venti-
lated.
6. Do not allow oil to penetrate the ground or enter
the draining system. Used oil must be recycled.
Oil filters and desiccants must be treated as
special waste products. Relevant applicable
regulations must be followed.
7. Neutralise and thoroughly rinse any spilled battery
fluid immediately.

7. 8
M1.0-0000-0008
8
SAFETY
Printed in Germany
M/P-MA-0000
REV. 1 4/00
8. Keep the truck clean. This will facilitate the loca-
tion of loose or faulty components.
9. Make sure that capacity and data plates, warnings
and labels are legible at all times.
10. Alterations or modifications by the owner or
operator are not permitted without the express
written authorisation from Crown.
11. Only use original Crown spare parts to ensure the
reliability, safety and suitability of the Crown truck.
Before Leaving the Truck
● Stop the truck.
● Lower the fork carriage fully.
● Apply the parking brake.
● Turn off the travel switch and remove the key.
● Block all wheels when parking on an uneven
surface.
Before Carrying out Work on the
Truck
● Raise the truck to free the drive wheel. Press the
emergency Stop button and disconnect the
battery.
● Prevent the truck from rolling away.
● Before carrying out work on the hoist frame, the
lift mast or on the fork carriage: Block these parts
according to maintenance instructions in order to
prevent them from dropping.
● Only carry out operational testing when there is
sufficient room to manoeuvre, to avoid the risk of
injury to yourself and others.
Before Operating the Truck
● Check the safety devices.
● Get into the driver's seat.
● Check the operation of the lifting device, travel
direction switch, speed control, steering, warning
devices and brakes.
Warnings and Labels on the Truck
During regular maintenance check that the warnings and
labels on the truck are complete and legible.
● Clean any illegible labels.
● Replace any faulty or missing labels.
The order and meaning of the warnings and labels on
the truck are described in section 10.9 of the parts
manual.

8. 9
Printed in Germany
INTRODUCTION

9. 11
M1.0-0000-00011
11
INTRODUCTION
MP-RT3020-Rev.2-GB 04/02 • Printed in Germany M/P-ITD-2910
Please refer to the Technical Specifications Sheet for the
utilisable loads, technical data and dimensions for this
series. Brochures can be obtained from your CROWN
dealer or from the following address:
CROWN Gabelstapler GmbH
Moosacher Str. 52
80809 Munich
GERMANY
Tel.: +49 (0)89 / 93 002 -0
Fax: +49 (0)89 / 93 002 -175 oder 133
General
The present manual is designed for Customer Service
engineers who wish to familiarise themselves with the
maintenance work required for the various truck compo-
nents.
It also contains troubleshooting sections which can be
used to identify and remedy truck faults.
INFORMATION
This book is not an operating manual. It is
designed solely for specialist personnel
who have been trained and authorised to
carry out the work described in the manual.
This manual therefore contains fewer and less detailed
warnings than the Operator's Manual, as the latter is aimed
at persons who have very little or no prior experience at
all.
Operating Instructions
This manual contains no operating instructions. An
operating instructions manual is supplied with the vehicle.
Additional copies can be ordered as required.
With the help of this manual you and your personnel will
be able to ensure the long service life, operational safety
and error free functioning of your CROWN vehicle.
Service Training
CROWN offers the appropriate vehicle related training for
service personnel. Details on this training can be obtained
from CROWN on request.
Ordering Spare Parts
Spare parts can be ordered by quoting:
● The truck specification number
● The truck model number
● The truck serial number
This information can be found on the truck's data plate.
Only if this information is provided can the order be
processed quickly, correctly and reliably.

10. 12
M1.0-0000-00012
12
INTRODUCTION
MP-RT3020-Rev.2-GB 04/02 • Printed in Germany
M/P-ITD-2910
Modeldescription
Rider Pallet Truck with 2.200 kg capacity
RT3020
Model-Number

11. 13
Printed in Germany
LUBRICATION AND ADJUSTMENT

12. 15
M1.0-0000-00015
15
LUBRICATION
MP-RT3020-Rev.2-GB 04/02 • Printed in Germany P-1.1-2910
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M1.0-0000-00016
16
LUBRICATION
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P-1.2-2910
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15. 17
Printed in Germany
ELECTRICAL DIAGRAMS