Wacker Neuson ET18, ET20, ET24 Operator's Manual
5200016123 1.3
1113
Track Excavator
ET18/20/24
This Operator's Manual includes
the AEM Safety Manual
OPERATOR’S MANUAL
5200016123
OM/Service booklet
Operator's Manual us 5200016123 ET18 (E12-02) de/en/fr 1000279963
Service Booklet
Language Order no.
de 1000146850 ET18 (E12-02) de/it/es 1000279982
en 1000148392 ET20 (E12-03) de/en/fr 1000281454
fr 1000148394 ET20 (E12-03) de/it/es 1000281455
it 1000148395 ET24 (E12-04) de/en/fr 1000281027
Spare parts list
Language Order no.
--
Legend
Original Operator‘s Manual
Translation of original Operator‘s Manual x
Edition 1.3
Date 11/2013
Document OM ET18/20/24 us
Copyright 2013 Wacker Neuson Baumaschinen GmbH, Hörsching
Printed in Michigan, USA
All rights reserved, in particular the globally applicable copyright, right of reproduction and right of distribution.
No part of this publication may be reproduced, translated or used in any form or by any means – graphic, electronic
or mechanical including photocopying, recording, taping or information storage or retrieval systems – without prior
permission in writing from the manufacturer.
No reproduction or translation of this publication, in whole or part, without the written consent of Wacker Neuson
Linz GmbH.
Violations of legal regulations, in particular of the copyright protection, will be subject to civil and criminal prosecution.
Wacker Neuson Linz GmbH keep abreast of the latest technical developments and constantly improve their products. For this reason, we may from time to time need to make changes to diagrams and descriptions in this documentation which do not reflect products which have already been delivered and which will not be implemented on
these machines.
Technical data, dimensions and weights are given as an indication only. Responsibility for errors or omissions not
accepted. Non-metric weights and measurements are approximate.
The cover features the machine with possible optional equipment.
ET24 (E12-04) de/it/es 1000281028
-
Wacker Neuson Linz GmbH
Flughafenstraße 7
A-4063 Hörsching
Document: OM ET18/20/24 us
Order no.: 5200016123
Edition: 1.3
Table of Contents
Table of Contents
EC declaration of conformity (Yanmar 3TNV76-SNSE12)..................................................................EG-1
Declaration of conformity without CE mark on the type lab el – except USA and Canada ( Yanmar 3TNV76-
SNSE12)EG-2
1Foreword
1.1 Operator’s Manual................................................................................................................................ 1-1
1.2 Warranty and liability ............................................................................................................................ 1-5
2 Safety Information
2.1 Safety Symbols Found in this Manual ................... ... ... ... .... ... ... ... .... ... ... ... ... ....... ... ... .... ... ... ... ... ... ......... 2-1
2.2 Warranty............................................................................................................................................... 2-2
2.3 Designated Use.................................................................................................................................... 2-2
2.4 Preparing to use the machine............................................................................................................... 2-3
2.5 Operator and Technician Qualifications and Basic Responsibilities......................... .... ... ..................... 2-6
2.6 Safety instructions Regarding Operation.............................................................................................. 2-6
2.7 Applications with Lifting Gear ................................................... ... .... ..................................................... 2-9
2.8 Attachments........................................................................................................................................ 2-10
2.9 Transport and Towing......................................................................................................................... 2-11
2.10 Safety Guidelines for Maintenance..................................................................................................... 2-11
2.11 Safety Guidelines while using Internal Combustion Engines.............................................................. 2-16
3 Introduction
3.1 Machine overview.................................................................................. ............................................... 3-1
3.2 Brief description of the machine ........................................................................................................... 3-2
3.3 Notices and regulations on use ............................................................................................................ 3-4
3.4 Labels................................................................................................................................................... 3-8
4 Putting into operation
4.1 Cab/control stand ................................................................................................................................. 4-1
4.2 Control element overview................................................................................................................... 4-29
4.3 Indicator lights and warning lights (overview)..................................................................................... 4-34
4.4 Preparatory work ................................................................................................................................ 4-37
4.5 Starting and stopping the engine........................................................................................................ 4-41
5Operation
5.1 Steering system..................................................................................... ............................................... 5-1
5.2 Accelerator actuation....................................................................................... ..................................... 5-1
5.3 Brakes .................................................................................................................................................. 5-2
5.4 Travel operation.................................................................................................................................... 5-3
5.5 Differential lock..................................................................................................................................... 5-8
5.6 Lights/signalling system........................................................................................................................ 5-8
5.7 Wiper/wash system (option) ............................................................................................................... 5-10
5.8 Heating, ventilation and air conditioning system................................................................................. 5-11
5.9 Work hydraulics.................................................................................................................................. 5-12
5.10 Attachments........................................................................................................................................ 5-40
5.11 Work operation ................................................................................................................................... 5-44
5.12 Emergency lowering........................................................................................................................... 5-49
5.13 Additional equipment/options ............................................................................................................. 5-50
5.14 Decommissioning and putting the machine back into operation......................................................... 5-57
5.15 Final decommissioning of machine..................................................................................................... 5-59
6Transport
6.1 Towing the machine ............................................................................................................................. 6-1
6.2 Loading the machine ............................................................................................................................ 6-3
6.3 Transporting the machine..................................................................................................................... 6-6
OM ET18/20/24 us 1.3 * et18_20_24us1_3IVZ.fm I-1
7 Maintenance
7.1 Important information on maintenance ................................................................................................. 7-1
7.2 Maintenance overview.......................................................................................................................... 7-2
7.3 Fluids and lubricants........................................................................................................................... 7-10
7.4 Maintenance accesses .............. .......................................... ............................................................... 7-14
7.5 Cleaning and maintenance on or with the machine............................................................................ 7-20
7.6 Lubrication work................... ................................................................................. .............................. 7-23
7.7 Fuel system ........................................................................................................................................ 7-26
7.8 Engine lubrication system.................................................................................................. ................. 7-32
7.9 Cooling system ............. .... ... ... ... .... ..................................................................................................... 7-34
7.10 Air filter................. ................................................................................. .............................................. 7-37
7.11 V-belt .................................................................................................................................................. 7-40
7.12 Hydraulic system ................................................................................................................................ 7-41
7.13 Electrical system........ ... .... ... ... ... ......................................................................................................... 7-45
7.14 Heating, ventilation and air conditioning system................................................................................. 7-47
7.15 Washer system................................................................................................................................... 7-48
7.16 Brake system...................................................................................................................................... 7-48
7.17 Tires/tracks......................................................................................................................................... 7-49
7.18 Maintenance of attachments............................................................................................................... 7-52
7.19 Maintenance of options........... ... .... ... ... .......................................... ..................................................... 7-52
8 Troubleshooting
8.1 Diesel engine malfunctions................................................................................................................ ... 8-1
8.2 Malfunctions of the traveling drive ........................................................................................................ 8-1
8.3 Malfunctions of the hydraulic system.................................................................................................... 8-1
8.4 Malfunctions of the electrical system.................................................................................................... 8-1
8.5 Troubleshooting the air conditioning..................................................................................................... 8-1
8.6 Malfunctions of attachments................................................................................................................. 8-2
9 Specifications
9.1 Models and trade names...................................................................................................................... 9-1
9.2 Engine................................................................................................................................................... 9-1
9.3 Traveling drive/axles............................................................................................................................. 9-3
9.4 Brakes................................................................................................................................................... 9-3
9.5 Tracks................................................................................................................................................... 9-3
9.6 Steering system................................................................................................................................ . ... 9-3
9.7 Work hydraulics ................ ... ... ................................................................................. ............................. 9-3
9.8 Electrical system........ ... .... ... ... ... ........................................................................................................... 9-5
9.9 Tightening torques.................................................. .......................................... .................................... 9-7
9.10 Coolant .............................................................................................................................. .. . ... ... ... ....... 9-8
9.11 Noise emissions.................................................................................................................................... 9-8
9.12 Vibration................................................................................................................................................ 9-9
9.13 Weight................................................................................................................................................. 9-12
9.14 Payload/stability.................................................................................................................................. 9-14
Index
Index ..............................................................................................................................................................S-1
I-2 OM ET18/20/24 us 1.3 * et18_20_24us1_3IVZ.fm
EC Declaration of Conformity
According to Machine Directive 2006/42/EC, appendix II A
Manufacturer
Wacker Neuson Linz GmbH
Flughafenstr. 7
A-4063 Hörsching
Product
Machine designation: Hydraulic excavator
Machine model: ET 18, ET 20, ET 24
Serial no.: ______________
Output (kW): 13.4 kW
Measured sound power level: 92.8 dB (A)
Guaranteed sound power level: 93 dB (A)
Conformity assessment procedure
Notified body according to Directive 2006/42/EC, appendix XI:
DGUV Test
Prüf- und Zertifizierungsstelle
Fachbereich Bauwesen
Landsberger Str. 309
D-80687 Munich
Distinguishing EU number 0515
Notified body according to Directive 2000/14/EC, appendix VI:
TÜV SÜD Industrie Service GmbH
Westendstr. 199
D-80686 Munich
Directives and standards
We hereby declare that this product corresponds to the relevant regulations and requirements of the
following Directives and standards:
2006/42/EC, 2004/108/EC, 2002/44/EC, 2005/88/EC, 2000/14/EC;
DIN EN ISO 12100:2010, DIN EN 474-1:2006+A1:2009, DIN EN 474-5:2012,
DIN EN 13510:2010, DIN EN ISO 3744:2010 , DIN EN ISO 3449:2008
Technical director
Responsible for documentation
Hörsching,
Place, date
Declaration of conformity
Declaration of conformity
EC declaration of conformity (Yanmar 3TNV76-SNSE12)
OM ET18/20/24 us 1.3 * et18_20_24konf.fm EG-1
Declaration of conformity without CE mark on the type label – except
Declaration of conformity
Manufacturer
Wacker Neuson Linz GmbH
Flughafenstr. 7
A-4063 Hörsching
Product
Machine designation: Hydraulic excavator
Machine model: ET 18, ET 20, ET 24
Serial no.: ______________
Output (kW): 13.4 kW
Measured sound power level: 92.8 dB (A)
Guaranteed sound power level: 93 dB (A)
Directives and standards
We hereby declare that this product corresponds to the relevant regulations and requirements of the
following Directives and standards:
2006/42/EC, 2004/108/EC, 2002/44/EC, 2005/88/EC, 2000/14/EC;
DIN EN ISO 12100:2010, DIN EN 474-1:2006+A1:2009 (except 7.3), DIN EN 474-5:2012,
DIN EN 13510:2010, DIN EN ISO 3744:2010, DIN EN ISO 3449:2008
Technical directorResponsible for documentation
Hörsching,
Place, date
USA and Canada (Yanmar 3TNV76-SNSE12)
EG-2 OM ET18/20/24 us 1.3 * et18_20_24konf.fm
Table of Contents
Index
Foreword
1 Foreword
1.1 Operator’s Manual
Notices on this Operator’s Manual
This Operator’s Manual is stored in the compartment under the seat if the
machine is equipped with a canopy. If the machine is equipped with a cab,
this Operator’s Manual is stored behind the seat. A document box on the
headliner is available as an option for the cab version.
This Operator’s Manual contains important information on how to work
safely, correctly and economically with the machine. Therefore, it aims not
only at new personnel, but it also serves as a reference for experienced
personnel.
Furthermore, the reliability and the service life of the machine will be
increased by following the instructions in the Operator’s Manual. This is
why the Operator’s Manual must always be kept at hand in the machine.
The operator must carefully read and understand the Operator’s Manual
before starting up, servicing or repairing the machine.
This Operator’s Manual will help to familiarize yourself more easily with
the machine, thereby enabling you to use it more safely and efficiently.
This Operator’s Manual does not include special superstructures.
This Operator’s Manual will help to familiarize yourself more easily with
the machine, thereby enabling you to use it more safely and efficiently.
Please contact your dealer if you require more information on the machine
or the Operator’s Manual.
1
OM ET18/20/24 us 1.3 * et18_20_24v100.fm 1-1
1
Information
Environment
Explanation of symbols and abbreviations
Explanation of symbols
• Identifies a list
- Identifies a subdivision of a list
➥ Description of a result
1. Identifies an activity
Follow the order of the activity!
2. Continuation of an activity
Follow the order of the activity!
A Identifies an alphabetical list
B Continuation of an alphabetical list
Cross reference formats: see page 1-1 (page)
Cross reference formats: 7 (pos. no. or table no.)
Cross reference formats: Fig. 5 (fig. no. 1)
Cross references: – see chapter “5 Operation” on page 5-1
(see chapter)
Cross references: – see “Operation” on page 5-1 (-see text)
Identifies an instruction that, when followed, provides for a more
efficient and economical use of the machine.
Failure to observe the instructions identified by this symbol can
result in damage to the environment.
1-2 OM ET18/20/24 us 1.3 * et18_20_24v100.fm
Abbreviations
AUX = Auxiliary hydraulic circuit
B=Width
NE = Nominal width
ROPS = Roll Over Protective Structure
FOPS = Falling Objects Protective Structure
TOPS = Tip Over Protective Structure
FGPS = Front Guard Protective Structure
PS = Stabilizer blade
LS = Stick
VDS = Vertical Digging System
HSWS = Hydraulic quickhitch, Easy Lock
s/h = Se rv ice hours
1
Pos. = Position
Fig. = Figure
e.g. = for example
approx. = approximately
=
max. = maximum
min. = minimum
OM ET18/20/24 us 1.3 * et18_20_24v100.fm 1-3
1
Conversion table
The rounded imperial values are indicated in brackets, for example 1060
cm³ (64.7 in³).
Volume unit
1 cm³ (0.061 in³)
1 m³ (35.31 ft³)
1 ml (0.034 US fl.oz.)
1 l (0.26 gal)
1 l/min (0.26 gal/min)
Unit of length
1 mm (0.039 in)
1 m (3.28 ft)
Weight
1 kg (2.2 lbs)
1 g (0.035 oz)
Pressure
1 bar (14.5 psi)
1 kg/cm² (14.22 lbs/in²)
Force/output
1 kN (224.81 lbf)
1 kW (1.34 hp)
1 PS (0.986 hp)
Torque
1 Nm (0.74 ft.lbs)
Speed
1 kph (0.62 mph)
Acceleration
1 m/s² (3.28 ft/s²)
1-4 OM ET18/20/24 us 1.3 * et18_20_24v100.fm
1.2 Warranty and liability
Exemption from warranty and liability
Warranty
Warranty claims can be made only if the conditions of warranty have been
observed. They are included in the General Conditions of Sales and
Delivery for new machines and spare parts sold by the dealers of Wacker
Neuson Linz GmbH. Furthermore, all instructions in this Operator’s
Manual must be observed.
Have the maintenance on or with the machine, deliver y inspection and the
entries in the service booklet performed by a Wacker Neuson service
center, otherwise warranty claims will not be acknowledged.
Liability
• Modifying Wacker Neuson products and fitting them with additional
equipment and attachments that are not inc l ud ed in our deliv er y
program requires Wacker Neuson’s written authorization, otherwise
warranty and product liability for possible damage caused by these
modifications shall not be applicable.
• The safety of the machine can be negatively affected by performing
machine modifications without proper authority and by using spare
parts, equipment, attachments and optio n al eq uip men t th at ha ve not
been checked and released by Wacker Neuson GmbH. Warranty and
product liability for possible damage caused by these modifications
shall not be applicable.
• Wacker Neuson Linz GmbH shall not be liable for personal injury and/
or damage to property caused by failure to observe the safety instructions and the Operator’s Manual, and by the negligence of the duty to
exercise due care when:
- handling
- operating
- servicing and performing maintenance on or with the machine and
- repairing the machine. This is also applicable in those cases in which
special attention has not been drawn to the duty to exercise due
care, in the safety instructions as well as in the Operator’s an d
maintenance manuals.
- Read and understand the Operator’s Manual before starting up,
servicing or repairing the machine. Observe all safety instructions.
1
OM ET18/20/24 us 1.3 * et18_20_24v100.fm 1-5
1
Notes:
1-6 OM ET18/20/24 us 1.3 * et18_20_24v100.fm
2 Safety Information
DANGER
WARNING
CAUTION
Notice
2.1 Safety Symbols Found in this Manual
This is the safety alert symbol. It is used to alert you to potential personal
hazards.
• Obey all safety messages that follow this symbol.
DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Consequences in case of non-observance.
► Obey all safety messages that follow this symbol to avoid
injury or death.
WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
Consequences in case of non-observance.
► Obey all safety messages that follow this symbol to avoid
possible injury or death
CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
Consequences in case of non-observance
► Obey all safety messages that follow this symbol to avoid
possible minor or moderate injury.
NOTICE indicates a situation which, if not avoided, could result
in property damage.
Note: Contains additional informatio n impo rt an t to a pro ced u re .
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-1
Information
Environment
2.2 Warranty
2.3 Designated Use
Information identifies an instruction that, when followed,
provides for a more efficient and economical use of the machine.
Failure to observe the instructions identified by this symbol can
result in damage to the environment. The environment is in
danger if environmentally hazardous material, such as waste oil,
is not subject to proper use or disposal.
Warranty claims must be submitted to your Wacker Neuson dealer only.
1. In accordance with its designated use, the ma ch in e ma y be use d
ONLY for moving earth, gravel, coarse gravel or ballast and rubble. It
may also be used for working with the attachments approved in the
“Fields of Application” chapter.
2. No other applications are designated for the use of the machine.
Wacker Neuson will not be liable for damage resulting from use other
than mentioned above. The operator alone will bear the risk.
3. “Designated use” also includes observing the instructions set forth in
this Operator’s Manual and observing the maintenance schedule.
4. Machine safety can be negatively affected by performing machine
modifications without proper authority and by using spare parts,
equipment,
attachments and optional equipment which have not been checked
and released by Wacker Neuson. Wacker Neuson will not be liable for
damage resulting from unapproved parts or unauthorized
modifications.
5. Wacker Neuson shall not be liable for personal injury and/or damage to
property caused by failure to observe the safety instructions on labels
and in this Operator’s Manual, and by the negligence of the duty to
exercise due care when:
• transporting the machine
• operating the machine
• servicing the machine and performing ma inte n an ce on or with th e
machine
• repairing the machine
This is also applicable when special attention has not been drawn to the
duty to exercise due care.
1. Read and understand this Operator’s Manual before starting, moving,
operating, servicing or repairing the machine. Observe all safety
instructions.
2. The machine shall NOT be used for transport jobs on public roads!
2-2 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
2.4 Preparing to use the machine
Conditions for use
• The machine has been designed and built in accordance with state-of-
the-art standards and recognized safety regulations. Nevertheless, its
use can constitute a risk to the operator or to third parties, or cause
damage to the machine and to other material property.
• Read and follow this Operator’s Manual and other manuals that
accompany the machine.
• The machine must only be used in accordance with its designated use
and the instructions set forth in this Operator’s Manual.
• The machine must only be used by qualified operators who are fully
aware of the risks involved in operating the machin e.
• Do not start, move or operate a damaged or malfunctioning machine.
Any mechanical dysfunctions, especially th os e aff ec tin g the s afet y of
the machine, must be repaired immediately. Only qualified technicians
shall determine how to move a damaged or malfunctioning mach ine to
a safe place for diagnoses and repair.
• The operator/machine owner commits himself to op erate and keep the
machine in serviceable condition and, if necessary or required by law,
to require the operating or servicing persons to wear protective clothing
and safety equipment
Operator training and knowledge
• Always keep this Operator’s Manual and other manuals that
accompany the machine in their storage compartment provided in the
operator station on the machine. Immediately replace an incomplete or
illegible Operator’s Manual.
• All persons working on or with the machine must read and understand
the safety information in this Manual before beginning work. This
applies especially to persons working only occasionally on the
machine, such as performing set-up or maintenance tasks.
• Follow, and instruct the operator in, legal and other mandatory regula-
tions relevant to accident prevention and envir on m en ta l
protection.These may include handling hazardous sub stances, issuing
and/or wearing personal protective equipment, or obeying traffic
regulations.
• The operator/machine owner must regularly ensure that all persons
entrusted with operation or maintenance of the machine are working in
compliance with this Operator's Manual and are aware of the risks and
safety factors of the machine.
Preparing for use
• Before starting up the machine, ALWAYS inspect the machin e to make
sure that it is ready for safe work and travel operation.
• Wear close-fitting work clothes that do not hinder movement. Tie back
long hair and remove all jewelry (including rings).
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-3
Modifications and spare parts
Abb. 1: Lifting gear – joint rod
Lifting gear
(joint rod)
Sling
Abb. 2: Load hook
Lifting gear
Load hook
• NEVER make any modifications, additions or conversions to the
• Spare parts must comply with the technical requirements specified by
• The operator/machine owner commits hi mself to operate and keep the
• In the event of safety-relevant modifications or changes on the
• Safety-relevant damage or malfunctions of the machine must be
Applications with lifting gear
Lifting gear applications are procedures involving raising, transpor ting and
lowering loads with the help of slings and load-securing devices (e.g.
ropes, chains).
No applications with lifting gear under any circum st an ce s!
Machines with a maximum authorized lifting capacity of over 1000 kg
(2,205 lbs.) or an overturning moment of over 40,000 Nm (29,500 ft.lbs.)
may be used for lifting gear applications if the following conditions are
fulfilled:
• Acoustic and optical warning device
• Load holding control valve – see chapter 3.17 “Load holding control
• Proper equipment for slinging and securing the load must be available
• The lift capacity table must be observed – see chapter 6 Specifications
machine and its superstructures (for example, cab, etc.), or the
machine’s attachments, without the approval of Wacker Neuson! Such
modifications may affect safety and/or machine performance. This also
applies to the installation and adjustment of safety device s and valves,
as well as to welding work on load-bearing elements.
Wacker Neuson. Contact your Wacker Neuson dealer for assistance.
machine in perfect condition, and, if necessary or required by law, to
require the operating or servicing persons to wear protective clothing
etc.
machine or of its behavior, stop the machine immediately and report
the malfunction to the competent authority/person.
rectified immediately.
– see chapter 3.20 Safe load indicator (option) on page 3-72
valve” safety feature (option) on page 3-65
(joint rod enabling loads to be picked up, Powertilt unit with load hook).
on page 6-1.
- Get informed on and follow the legal regulations of your country.
2-4 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
Instructions on fastening loads
• The help of an accompanying person is necessary for securing and
detaching the load.
• The load must be secured so as to prevent it from falling or slipping.
• Fasten the lifting gear so that it is not possible to unhook the sling
unintentionally.
• Position the lifting gear ensuring the sling is not deflected by other
parts.
• Do not use any lifting gear and slings that are damaged or not sufficiently dimensioned.
• The lifting gear must be designed to withstand the load s tha t can arise
in the different positions of the work equipment or parts of the boom.
Lateral loads and diagonal tensile forces must also be taken into
account.
• The lifting gear must be checked regularly by a technician, at least
once a year.
• Replace damaged lifting gear immediately.
• Fasten lifting gear and slings avoiding danger (rotating parts, crushing
or shearing) for the person securing the load. Furthermore, neither
must the work equipment be affected by the lifting gear, nor must the
functions of the lifting gear be affected by external influences (e.g. dirt
that cannot be removed by simple means).
• Do not place slings over sharp edges.
• Always wear protective gloves and a hard hat when working with lifting
gear and slings.
• The persons attaching or securing loads may approach the boom from
the side only, and only after the machine operator has given his
permission. The machine operator may give his permission only after
the machine is at a standstill and the work attachment no longer
moves!
General instructions
• Staying under suspended loads, in the danger zone or under the
machine's attachment is prohibited.
• The machine operator and the person attaching or securing the load
must have visual contact.
• Persons guiding the load or securing it must stay in visual contact with
the machine operator! Should this not be possible, ask anoth er person
to guide.
• The machine operator must guide the load the nearest possible to the
ground and avoid any oscillating or swinging movements!
• Perform machine travel with a raised load only if the path of the
machine is level!
• The machine operator must not raise loads over persons.
• The machine operator may not leave his seat as long as the load is
raised.
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-5
2.5 Operator and Technician Qualifications and Basic Responsibilities
Operator/machine owner responsibility
• Only allow trained and experienced individuals to travel, maintain, or
repair the machine. NEVER let unauthorized or underaged persons
operate with the machine.
• Clearly and unequivocally define the individual responsibilities of the
operator and technician for operation, maintenance, and repair.
• Define the machine operator’s responsibilities on the job site and for
observing traffic rules. Give the operator the authority to refuse instructions by third parties that are contrary to safety.
• Do not allow persons to be trained or instructed by anyone other than
an experienced person. Also, NEVER allow persons taking part in a
general training course to work on or with the machine without being
supervised by an experienced person.
• Before working on or with the machine, remove jewelery, such as
rings, wristwatches, bracelets etc., and tie back long hair and do not
wear loose-fitting garments, such as unbuttoned or unzipped jackets,
ties or scarves.
• Injury can result from being caught up in the machinery or from rings
catching on moving parts!
Repair person qualifications
• Work on the electric system and equipment, on the undercarriage and
the steering and brake systems can be performed only by skilled
individuals who have been specially trained for such work.
• Work on the hydraulic system of the machine must be performed only
by a technician with special knowledge and experience in hydraulic
equipment.
2.6 Safety instructions Regarding Operation
Preparing for use
• The machine must only be used in technically perfect condition in
accordance with its designated use and the instructions set forth in the
Operator's Manual, and only by safety-conscious persons who ar e fully
aware of the risks involved in operating the machine. Any functional
disorders, especially those affecting the safety of the machine, must
therefore be rectified immediately!
• Before starting up the machine, inspect the machine for safety in work
and road operation!
• In addition to the Operator's Manual, observe and instruct the ope rator
in all other generally applicable legal and other mandatory regulations
relevant to accident prevention and environmental protection.
• These compulsory regulations may also deal with handling hazardous
substances, issuing and/or wearing personal protective equipment, or
traffic regulations.
• With regard to specific operational features, e.g. those relevant to job
organization, work sequences or the persons entrusted with the work,
supplement the Operator's Manual by corresponding instructions,
including those relevant to supervising and reporting duties.
2-6 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
Starting and stopping
• Careful and prudent working is the best way to avoid accidents!Keep
the machine clean. This reduces fire hazard (such as from combustible
materials like rags), and reduces the injury hazard or operational
accidents that can be caused by dirt build-up on the travel pedals or
foot rests and steps.
• Observe all safety, warning, and informational signs and labels on the
machine.
• Start and operate the machine from the seat only.
• The operator must sit in the seat, fasten and adjust the seat belt before
putting the machine into operation.
• Always adjust the seat position before starting work. Do not change the
seat position during machine travel or machine operation.
• Make sure that all safety devices are properly installed and functional
before starting work.
• Before putting the machine/attachment into oper ation (startup/moving),
make sure that no one in the immediate vicinity will be at risk.
• Perform starting and stopping procedures according to this Operator’s
Manual.
• Observe all indicator lights.
• Do not use starting fluid (for example, ether) especially in those cases
in which a heater plug (intake air pre-heating) is used at the same time.
• Make sure the control levers, the signaling and the light systems are
functional before operating the machine, and also before restarting
after an interruption of work.
• Fold up the control lever base before releasing the seat belt in order to
avoid unintentional operation.
Work area awareness
• Familiarize yourself with the surroundings and circumstances of the
work site before beginning work. Be aware of:
- obstacles in the working and traveling area
- the soil bearing capacity
- any necessary barriers separating the work site from public roads
• Always keep at a safe distance from the edges of building pits and
slopes.
• Look out for the following when working in buildings or in enclosed
areas:
- height of the ceiling/clearances
- width of entrances
- maximum load of ceilings and floors
- sufficient room ventilation — carbon monoxide poisoning hazard.
• Observe the danger zone. See “Danger zone awareness”.
• Use the rearview mirror to stay aware of work area obstacles and
personnel.
• Always switch on the work lights in conditions of poor visibility and after
dark. However, make sure that users of public roads will not be temporarily blinded by the work lights.
• Provide additional lighting of the work area if the lights of the machine
are not sufficient for performing work safely.
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-7
Danger zone awareness
Operating the machine
• The danger zone is the area in which persons are in danger du e to the
movements of the machine, work equipment, additional equipment, or
material.
• The danger zone also includes the area affected by falling material,
equipment or construction debris. The danger zone must be extended
by 0.5 m (20 inches) in the immediate vicinity of buildings, scaffolds, or
other elements of construction.
• Seal off the danger zone if it is not possible to keep a safe distance.
Stop work immediately if persons do not leave the danger zone in spite
of warnings!
• Never operate the machine if you are standing on the ground.
• Operate the machine ONLY when you are seated and you have
fastened your seat belt. Stop the engine before releasing the seat belt.
• During operation on slopes, travel or work uphill or downhill. If traveling
across a slope cannot be avoided, bear in mind the tilting limit of the
machine. Always keep the attachments/work equipment close to the
ground. This also applies to traveling downhill. When traveling or
working across a slope, the load must be on the uphill side of the
machine.
• On sloping terrain, adapt your travel speed to the prevailing ground
conditions.
• Never get on or off during machine operation or tra vel, and do not jump
off the machine.
• The travel control levers require practice before an operator becomes
familiar with the control response. Therefore, adjust the travel speed to
your abilities and the surroundings.
• When traveling across a slope with the telescopic undercarriage
extended, position the boom facing down the slope, and the bucket
about 10–20 cm (4–8’’) above the ground. This will help to minimize
the possibility of personal injuries and equipment damage caused by a
hydraulic hose/connector failure in the telescopic undercarriage
actuation system. The weight of the machine will cause the undercarriage to retract to the narrow configuration if h ydraulic system pressure
decreases due to lost fluid.
• Install a front guard when working in areas with a risk of objects falling
from the front (e.g. demolition work).
• On sloping terrain always adapt your travel speed to the prevailing
ground conditions! Never change to lower gear on a slope but always
before reaching it!
Carrying passengers
• Do not transport people on the machine or in the attachment.
• Never install a man basket or a working platform to the machine.
Mechanical integrity
• Take the necessary precautions to make sure the machine is used
only when in a safe and serviceable state.
• Operate the machine ONLY if all protective and safety-oriented
devices (ROPS, removable safety devices, soundproofing elements,
mufflers, etc.) are in place and fully functional.
2-8 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
• Check the machine before entering the cab to operate the machine for
visible damage and defects. Report any changes, including chang es in
the machine’s function and response, to your supervisor immediately!
• If the machine is functioning unpredictably, stop the machine immedi-
ately, lock it, and report the malfunction to a qualified tecnician or
supervisor. Safety-relevant damage or malfunctions of the machine
must be rectified immediately.
Traveling
• When traveling on or in public areas, observe all applicable regula-
tions. Make sure beforehand that the machine is in compliance with
these regulations.
• Installed work lights must NOT be used for travel.
• When crossing underpasses, gates, bridges and tunnels, or when
passing under overhead lines, make sure the clearance height and
width are sufficient to avoid contact.
• Empty the bucket before traveling on public roads.
2.7 Applications with Lifting Gear
General information
• Craning applications are procedures involving ra ising, transporting and
lowering loads with the help of slings and load-securing devices (for
example, ropes and tracks). In doing so, the help of persons is
necessary for securing and detaching the load. This ap p lies, for
example, to lifting and lowering pipes, shaft rings or containers.
• The excavator may be used for applications with lifting gear ONLY if
the prescribed safety devices are in place and functional.
Safety criteria
• When used for craning applications, the machine must meet the
• In addition, a safe load indicator is required for machines bearing loa ds
Conditions for safe operation
• Secure the load to prevent it from falling or slipping. Install an OSHA-
• Have loads fastened, and crane operators instructed, by a qualified
• The load shall be kept as close to the surface as practical to accom-
following criteria:
- Proper equipment for slinging and securing the load
- Proper lift capacity per tables in this Operator’s Manual
of over 1000 kg (2,205 lbs.) or an overturning moment of over 40000
Nm (29,477 ft.lbs.).
approved load hook after removing the bucket or other approved
attachment to provide a secure attachment point for the lifting sling,
track, or cable.
person competent in raning operation and standard hand signals. The
person giving instructions to the operator must be within sight of the
operator during load attachment and load disconnection.
plish the craning operation. The operator shall gently move the controls
and machine to avoid swing or oscillating motion of the load. A tether
line is recommended to dampen the tendency of the load to swing or
oscillate during the craning operation.
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-9
• Machine travel with a raised load must be done very carefully on a
level surface moving very slowly to avoid sudden motion that can
cause swinging or oscillating motion of the load.
• The person(s) attaching the load to the excavator shall a pproach only if
the operator is in visual contact with them. No one shall approach the
machine or attempt to attach the load until the excavator has stopped
and the operator has signaled for the attachment.
2.8 Attachments
General information regarding attachments
• Prior to traveling remove all attachments which cannot be secured in
compliance with the legal regulations of your country.
• The machine operating characteristics including steering vary with
different option attachments and counter weights. The operator shall
be familiar with the variations and act accordingly.
• Use only approved attachments and connecting hardware.
• Attach and remove attachments carefully to avoid damage and
potential injury.
• Attach and remove attachments carefully to avoid damage and
potential injury.
• Confirm that the attachment has been properly and securely attached
to the machine according to the instructions. Before using the
attachment, the operator shall confirm that the attachment performs
correctly in response to control actuation.
• Do not attach the attachment with the engine running and the machine
moving.
• Before putting the machine/attachment into operation (startup/moving),
make sure that no one in the immediate vicinity will be at risk.
• Before leaving the seat, always secure the machine against unintentional movement and unauthorized use. Lower the attachments to the
ground.
• Mount the attachments only if the engine and the drive have been
stopped.
• Especially when traveling or operating machines equipped with a
quickhitch for the attachments, make sure the attachment is securely
locked in the quickhitch. The lock pin must be visible on either side of
the bores on the attachment. Check before starting work.
Installation notes
• Couple and uncouple hydraulic hoses/lines (hydraulic quick couplers) only if the engine
is stopped and the controls actuated to release the hydraulic pressure remaining in the
circuit. Follow the operating instructions for releasing the pressure.
• Operate the machine only if all protective devices for the attachments have been
installed and are functional, and if all brake, light and hydraulic connections have been
connected.
• If an optional attachment is installed, make sure that all lights and associated indicator
lights are installed and functional.
• The lock pin of the quick hitch attachment shall be visible at each end of the pin to
confirm that the attachment is securely locked in place. The operator shall perform a
check operation to confirm the latching integrity before operating at a production pace.
2-10 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
• Prior to fitting attachments to the stick (the mobile extension of the boom), secure the
control lever of the hydraulic control unit against unintentional movement. Raise the left
arm rest to avoid unintentional activation for the ISO/SAE operating mode. Avoid
actuating the right hand control if the alternative control mode is selected.
2.9 Transport and Towing
Towing
The machine must be towed, loaded and transported according to the
procedures described within this Operator’s Manual.
Transporting
• The transporting vehicle must have sufficient load capacity and
platform size to safely transport the machine. Refer to section 6 of this
manual to determine the physical characteristics of the machine before
loading and transporting.
• Use OSHA-approved straps, chains or cables to securely fastened the
machine to the surface of the transport.
• Use the tie down points provided on the load surface of the transport.
• Attach the tie down devices to the excavator at the designated tie down
points.
• Confirm that the excavator tie down procedures will prevent sideways,
forward, rearward and upward motion of the excavator in the event the
transport vehicle is involved in an incident or sudden avoidance
maneuver.
2.10 Safety Guidelines for Maintenance
General maintenance notes
• Adhere to prescribed intervals or those specified in this Operator’s
Manual for routine checks/inspections and maintenance on or with the
machine.
• For inspection and maintenance on or with the machine, ensure that all
tools and service center equipment are capable of performin g the tasks
prescribed. Do not use malfunctioning or broken tools. Use certified
measuring devices that are routinely calib r at ed for ac cu ra cy (to rqu e
wrench, pressure gauge, ammeter, etc.).
• Replace hydraulic hoses within stipulated and appropriate intervals
even if no safety-relevant defects have been detected.
• Recycle scrapped parts and drained fluids according to environmental
and hazardous material requirements. To avoid fire and health
hazards, dispose of soiled shop towels by approved methods.
• Always tighten any screws, electrical connections, or hose connections
that may have been loosened during maintenance.
• Upon completion of the maintenance and repair work, immediately r efit
and check any safety devices removed for set-up or maintenance
purposes.
Personal safety measures
• Brief the technician and the operator before beginning maintenance or
repair work. Appoint someone to supervise the activities.
• Always work in groups of two when diagnosing a machine problem
requiring the engine to be running. Both persons must be trained on
the machine—one person must be seated on the seat and maintain
visual contact with the other person.
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-11
• Observe the specific safety instructions in the Maintenance section of
this Operator’s Manual.
• Always keep a safe distance from all rotating and moving parts, for
example, fan blades, V-belt drives, PTO shaft drives, fans, etc.
• Before starting work on the machine, always ensure safe blocking/
support.
• Apply special care when working on the fuel system due to the
increased fire hazard.
• Engine and muffler system become very hot during operation and
require cool-down time after machine is shut off. Avoid contact with hot
parts. Wait for the machine to cool before touching components.
• Retainer pins can fly out or splinter when struck with force. Avoid
striking the pins during operation, repair, or maintenance.
• Do not use starting fluid (for example, ether), especially in those cases
in which a heater plug (intake air pre-heating) is used at the same time.
•
Preparing for maintenance and repair work
• Prior to performing repair and maintenance on or with the machine,
always attach a warning label such as “Repair work—do not start
machine!” to the control elements as a precautionary measure.
• Observe the startup and shutdown procedures set forth in this
Operator’s Manual. This applies to any work concerning the o peration,
conversion or adjustment of the machin e an d its sa fet y- or ien te d
devices, or any work related to inspection and maintenance.
• Prior to performing assembly work on the machine, stabilize the area
under repair and use proper lifting and sup port devices to change parts
weighing more than
9 kg (20 lbs.).
• Perform maintenance on or with the machine ONLY if:
- the machine is positioned on firm and level ground
- secured against unintentional movement
- all hydraulically movable attachments and wor kin g eq uip m en t ha ve
been lowered to the ground
- if the engine is stopped
- if the starting key has been removed
- the pressure accumulator is discharged
• Perform maintenance on or with the machine beneath a raised
machine, attachments or additional equipment ONLY if a safe and
secure support has been provided. The use of hydraulic cylinders or
jacks as the sole method of support does NOT sufficient ly secure
raised machines or equipment/attachments!
Performing maintenance and repairs
• Observe the adjustment, maintenance and inspection activities and
intervals set forth in this Operator’s Manual, including information on
the replacement of parts and partial equipment. These activities must
be performed only by qualified personnel.
• Disconnect the negative battery terminal when working on the
electrical system.
• Do not allow the machine to be serviced, repaired, or test-driven by
unauthorized personnel.
• If maintenance with the engine running cannot be avoided, lower the
stabilizer blade and raise the control lever base.
2-12 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
• Wear a safety harness when performing elevated maintenance on or
with the machine. Keep all handles, steps, handrails, platforms,
landings, and ladders free from dirt, snow and ice.
• Always use specially designed or otherwise safety-oriented ladders
and working platforms to perform overhead assembly work. NEVER
use machine parts or attachments/superstructures as a climbing aid!
• Do not use the work equipment as lifting platforms for persons.
• In accordance with this Operator’s Manual and instructions for the
respective assembly, release the pressur e in all system sec tio ns and
pressure lines (hydraulic system) before performing any maintenance
on or with the machine.
• Prior to performing assembly work on the machine, make sure no
movable parts will roll away or start moving.
• To avoid accident hazard, parts and large assemblies being moved for
replacement purposes must be carefully attached and secured to lifting
gear.
• Use only suitable lifting gear and suspension systems in a technically
perfect state with adequate load-bearing capacity! Stay clear of
suspended loads!
• Clean the machine, especially connections and threaded unions, of
any traces of oil, fuel or preservatives before performed maintenance/
repair work!
• Do not use aggressive detergents!
• Use lint-free cleaning rags!
• Before cleaning the machine with water, steam jet (high-pressure
cleaner) or detergents, cover or tape up all openings which – for safety
and functional reasons – must be protected against water, steam or
detergent penetration. Special care must be taken with the electrical
system.
• After cleaning, remove all covers and tapes applied for that purpose!
• After cleaning, examine all fuel, lubricant and hydraulic oil lines for
leaks, chafe marks and damage!
• Rectify all defects without delay!
• Always tighten any screw connections that have been loosened during
maintenance and repair!
• Any safety devices removed for set-up, maintenance or repair
purposes must be refitted and checked immediately upon completion
of the maintenance and repair work
• Make sure all consumables and replaced parts are disposed of safely
and with minimum environmental impact!
Special Hazards
Battery
• In case of a frozen battery or of an insufficient electrolyte level, do not
try starting the machine with battery jumper cables. The battery can
burst or explode.
• Batteries contain caustic sulphuric acid. When handling the battery,
observe the specific safety instructions and regulatio ns relative to
accident prevention.
• A volatile oxyhydrogen mixture forms in batteries during normal
operation and especially when charging. Always wear gloves and eye
protection when working with batteries.
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-13
Tracks
• Starting the machine with a battery jumper cable can be hazardous if
performed improperly. Observe the safety instructions regarding the
battery.
• Before taking up work on machine parts hazardous for life and limb
(bruising, cutting), always ensure safe blocking/support of these areas
• Perform maintenance and repair work beneath a raised machine,
attachments or additional equipment only if a safe and secure suppor t
has been provided for (the sole use of hydraulic cylinders, jacks etc.
does not sufficiently secure raised machines or equipment/attachments)
• Avoid contact with hot parts, such as the engine block or the exhaust
system during the operation of the machine and for some time afterwards – burn hazard!
• Retainer pins can fly out or splinter when struck with force – personal
injury hazard.
• Do not use starting fuel! This especially applies to those cases in which
a heater plug (intake-air preheating) is used at the same time –
explosion hazard.
• Apply special care when working on the fuel system – increased fire
hazard.
• Repair work on the tracks must be performed only by trained technical
staff or by a Wacker Neuson service center.
• Malfunctioning tracks reduce the machine's operational safety.
Therefore, check the tracks regularly for cracks, cuts or other damage.
• Check track tension at regular intervals.
Electric energy
• Use only original fuses with the specified current rating.
• In case of electrical system malfunctions, stop the machine immediately, disconnect the battery (by using the battery master switch), and
perform troubleshooting procedures.
• When operating the machine, maintain a safe distance from overhead
electric lines! If work must be performed close to overhead lines, the
equipment and attachments must be kept well away from them.
• If the machine comes into contact with a live wire:
• Immediately travel the machine out of the danger zone.
• Warn others against approaching and touching the machine.
• Do not leave the machine until the line that has been touched or
damaged has been safely de-energized!
• Make sure that work on the electric system is performed only by a
technician with appropriate training, in accordance with applicable
electrical engineering codes.
• Inspect and check the electrical equipment of the machine at regular
intervals. Defects such as loose connections or scorched cables must
be repaired immediately.
• Observe the operating voltage of the machine/attachments. The
voltages must be compatible (12 volts) and confirm that an appropriate
fuse or circuit breaker is incorporated in the system to prevent dama ge
from malfunction or short circuit.
• Always remove the grounding strap from the battery when working on
the electric system.
2-14 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
Hydraulics
Noise
MSDS
Gas, dust, steam, smoke
• Check all lines, hoses, and threaded couplers and fittings regularly for
leaks and obvious damage. Repair any damage and leaks immediately. Splashed oil can cause injury and fire!
• In accordance with the Operator's Manual/instructions for the
respective assembly, release the pressur e in all system sec tio ns and
pressure lines (hydraulic system) to be opened before perform any
implementing/repair work!
• Hydraulic and compressed-air lines must be laid and fitted properly.
Make sure no connections are interchanged. The fittings, lengths and
quality of the hoses must comply with the technical requirements
• Close all doors and windows if practical.
• Wear ear protection. This is especially important when performing
hammer operations or working in enclosed areas.
• When handling oil, grease, and other chemical substances such as
battery electrolyte or hydraulic fluid, observe the product-related safety
regulations (Material Safety Data Sheet (MSDS).
• Operate the machine only on adequately ventilated premises! Before
starting internal combustion engines or operating fuel-operated heating
systems on enclosed premises, make sure there is sufficient ventilation!
• Observe the regulations in force at the respective site!
• Perform welding, flame-cutting and grinding work on the machine only
if this has been expressly authorized. There can be a explosion and
fire hazard, for example!
• Before performing welding, flame-cutting and grinding work, clean the
machine and its surroundings from dust and other flammable
substances, and make sure the premises are adequately ventilated –
explosion hazard.
OM ET18/20/24 us 1.3 * Sicherheit(us).fm 2-15
2.11 Safety Guidelines while using Internal Combustion Engines
WARNING
Internal combustion engines present special hazards
during operation and fueling.
Failure to follow the warnings and safety guidelines could result
in severe injury or death.
► Read and follow the warning instructions in the engine
owner’s manual and the safety guidelines be low.
Running the engine
When running the engine:
• Keep the area around muffler pipe free of flammable materials.
• Check the fuel lines and the fuel tank for leaks and cracks before
starting the engine. Do not run the machine if fuel leaks are present or
the fuel lines are loose.
When running the engine:
• Engine exhaust CAN KILL YOU IN MINUTES. Engine exhaust
contains carbon monoxide. This is a poison you cannot see or smell.
Never run the machine indoors or in an enclosed area such as a deep
trench unless adequate ventilation, through such items as muffler fans
or hoses, is provided.
• Do not smoke while operating the machine.
• Do not run the engine near open flames.
• Do not touch the engine or muffler while the engine is running or
immediately after it has been turned off.
• Do not operate a machine when its fuel cap is loose or missing.
• Do not remove the radiator cap when the engine is run ning or ho t. The
radiator fluid is hot and under pressure, and may cause severe burns!
Fueling the engine
When fueling the engine:
• Clean up any spilled fuel immediately.
• Refill the fuel tank in a well-ventilated area.
• Replace the fuel tank cap after refueling.
When fueling the engine:
• Do not smoke.
• Do not refuel a hot or running engine.
• Do not refuel the engine near an open flame.
2-16 OM ET18/20/24 us 1.3 * Sicherheit(us).fm
Fig. 3: Machine overview
Position Designation
1. Working light on boom
2.
Roof lights (option)
3.
Lifting eye
4.
Rotating beacon (option)
5.
Door arrester
6.
Engine cover
7.
Fuel tank filler inlet
8.
Side cover
9.
Exhaust pipe
10.
Eye hook for tying down the machine
11.
Stabilizer blade
12.
Travel gear
13.
Handle
14.
Auxiliary hydraulics
15.
Door handle and lock
2
12
1
6
13
11
10
15
2
8
4
5
9
14
10
2
3
3
13
8
10
10
7
Introduction
3Introduction
3.1 Machine overview
3
OM ET18/20/24 us 1.3 * et18_20_24e300.fm 3-1
3
Information
Overview of model designations and trade names
Machine model/machine designation Trade name
E12-02 ET18
E12-03 ET20
E12-04 ET24
3.2 Brief description of the machine
The machine model ET18/ET 20/ET24 is a self-propelled work machine.
Get informed on and follow the legal regulations of your country.
This machine is a versatile and powerful helper for moving earth, gravel
and debris on construction sites and elsewhere. A wide range of
attachments accounts for the numerous applications of the machine,
among others hammer and grab applications. When using these
attachments, observe the legal regulations of your country and equip the
machine with all the safety equipment required. See chapter 1.4 Fields of
application and use of attachments on page 3-5 for further applications.
The main components of the machine are:
• Travel gear
- Travel gear
- Stabilizer blade
- Live ring
• Upper carriage
-Cab
- Water-cooled diesel engine
- Hydraulic and electrical components
•Boom
The machine can be equipped with the “Telematic” feature (for
transmitting operating data, location, etc. via satellite)!
Traveling drive
The diesel engine permanently drives a twin axial variable displacement
pump whose oil flow is sent to the control valve. Depending on actuation,
each pump supplies a hydraulic motor or the work hydraulics with oil.
Work hydraulics
The twin axial variable displacement pump supplies the work hydraulics
for the main components with oil. This pump is output-controlled and
supplies the oil quantity depending on the outpu t required. This machine is
also equipped with a gear pump flanged onto the variable displacement
pump. Depending on engine speed, this pump supplies oil for the swivel
unit, the stabilizer blade and travel gear extension/retraction (option).
Shock cartridges (option)
The auxiliary hydraulics are equipped with Schock cartridges to
compensate pressure peaks in the hydraulic system.
Cooling system
Coolant temperature is monitored with the indicator light on th e machine’ s
instrument panel.
3-2 OM ET18/20/24 us 1 .3 * et18_20_24e3 00.fm
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