Wacker Neuson WL 50 User manual

Operator’s Manual
Wheel Loader WL 50
www.wackerneuson.com

December 08 Edition

You have opted for a Wacker Neuson loader – thank you very much for putting your trust in us.
Your Wacker Neuson loader is a powerful product with robust technology and a wide range of applications to aid you in
your day-to-day work. In order to familiarize yourself with your loader in a quick, comprehensive manner, please read
this Operator’s Manual attentively.
In addition to the information regarding operation, this Operator’s Manual also contains important maintenance and op-
erating instructions for conserving the value of your loader. Furthermore, we will show you how to operate your loader in
an environmentally sound manner.
Should you have any questions or problems relating to your loader, please contact your Wacker Neuson partner or im-
porter. They will be happy to respond to your questions, suggestions or criticisms at any time.
We are condent that you will be very satised with your new Wacker Neuson loader.
Wacker Neuson Construction Equipment AG

CONTENTS
2
TABLE OF CONTENTS
PREFACE............................................................................................................................................................... 7
1 BASIC INFORMATION ..................................................................................................................................... 8
1.1 Notes about this Operator’s Manual ....................................................................................................... 9
1.2 Explanation of the symbols used in this Operator’s Manual................................................................. 10
1.3 Warranty and liability............................................................................................................................. 11
1.4 Intended use ......................................................................................................................................... 12
2 BASIC SAFETY INSTRUCTIONS .................................................................................................................. 14
2.1 Organizational measures ...................................................................................................................... 15
2.2 Selection and qualication of personnel / basic duties ......................................................................... 17
2.3 Safety instructions for certain operating phases .................................................................................. 18
2.3.1 Safety instructions for normal operation ............................................................................................... 18
2.3.2 Safety instructions for other operating modes ...................................................................................... 20
2.4 Safety instructions for particular hazards ............................................................................................. 23
2.4.1 Forklift attachment ................................................................................................................................ 23
2.4.2 Working near overhead power lines ..................................................................................................... 24
2.4.3 Electrical power..................................................................................................................................... 25
2.4.4 Flying sparks / re danger..................................................................................................................... 25
2.4.5 Gas, dust, steam, smoke ...................................................................................................................... 26
2.4.6 Hydraulics, pneumatics......................................................................................................................... 26
2.4.7 Tip-overs............................................................................................................................................... 27
2.4.8 Noise..................................................................................................................................................... 27
2.4.9 Oils, grease and other chemical substances........................................................................................ 27
2.5 Transporting and towing / restarting ..................................................................................................... 28

CONTENTS 3
WL50
2.6 Final decommissioning / dismantling .................................................................................................... 28
2.7 Safety labels used................................................................................................................................. 29
2.8 Safety devices....................................................................................................................................... 34
2.8.1 Fire extinguisher ................................................................................................................................... 34
2.8.2 Rotating beacon.................................................................................................................................... 34
2.8.3 Seat belt................................................................................................................................................ 35
2.8.4 Emergency exit ..................................................................................................................................... 36
2.8.5 Backup alarm for reverse drive ............................................................................................................. 36
2.8.6 Battery disconnect switch ..................................................................................................................... 37
2.8.7 Loader lift arm locking system .............................................................................................................. 38
3 TECHNICAL DATA.......................................................................................................................................... 39
3.1 Technical description ............................................................................................................................ 39
3.2 Loader data........................................................................................................................................... 41
3.3 Product identication number plates..................................................................................................... 43
3.4 Dimensions ........................................................................................................................................... 44
4 DESCRIPTION OF THE INDICATOR, WARNING AND CONTROL ELEMENTS ......................................... 46
4.1 Operating elements and instruments.................................................................................................... 46
4.2 Control and warning lights .................................................................................................................... 48
4.3 Indicator devices ................................................................................................................................... 52
4.4 Switches / rotary switches .................................................................................................................... 53
4.5 Rocker switches.................................................................................................................................... 54
5 OPERATING AND OPERATION .................................................................................................................... 58

CONTENTS
4
5.1 Before starting up ................................................................................................................................. 58
5.1.1 Fue ling .................................................................................................................................................. 58
5.1.2 Operation .............................................................................................................................................. 60
5.1.3 Doors and windows............................................................................................................................... 62
5.1.4 Adjusting the operator’s seat ................................................................................................................ 65
5.1.5 Adjusting the steering column............................................................................................................... 68
5.1.6 Seat belt................................................................................................................................................ 69
5.2 Starting up ............................................................................................................................................ 72
5.2.1 Lighting system and forward warning device........................................................................................ 72
5.2.2 Wipers and windshield washer system................................................................................................. 74
5.2.3 Headlights and rotating beacon ............................................................................................................ 76
5.2.4 Ventilation and heating of the cab......................................................................................................... 78
5.2.5 Before starting the engine..................................................................................................................... 80
5.2.6 Starting the engine................................................................................................................................ 81
5.3 Propulsion operation ............................................................................................................................. 84
5.3.1 Preparation for travel in public trafc .................................................................................................... 84
5.3.2 Travel speed.......................................................................................................................................... 85
5.3.3 Stopping and parking ............................................................................................................................ 89
5.4 Work operation...................................................................................................................................... 90
5.4.1 Operating lever for Loader lift arms ...................................................................................................... 92
5.4.2 Loader lift arms locking system ............................................................................................................ 94
5.4.3 Activating the optional hydraulics.......................................................................................................... 95
5.4.4 Differential lock ................................................................................................................................... 100
5.4.5 Changing attachments ........................................................................................................................ 102
5.4.6 Bucket ................................................................................................................................................. 109
5.4.7 Tip-overs..............................................................................................................................................115

CONTENTS 5
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5.4.8 Precaution measures for various temperature conditions ...................................................................116
5.5 Optional equipment..............................................................................................................................118
6 TOWING AND TRANSPORTING................................................................................................................. 122
6.1 Towing ................................................................................................................................................. 122
6.2 Transporting ........................................................................................................................................ 126
7 LOWERING LOADER ARMS........................................................................................................................ 133
8 RELIEVING RESIDUAL PRESSURE IN THE HYDRAULIC SYSTEM ........................................................ 134
9 SECURING THE LOADER ........................................................................................................................... 137
10 SERVICING AND INSPECTION................................................................................................................... 138
10.1 Basic safety instructions for servicing and inspection ........................................................................ 138
10.2 Servicing and inspection intervals ...................................................................................................... 146
10.3 Lubrication schedule........................................................................................................................... 158
10.4 Cleaning the loader............................................................................................................................. 160
10.5 General safety check .......................................................................................................................... 162
10.6 Specications and lling quantities..................................................................................................... 163
10.7 Maintenance and inspection work ...................................................................................................... 164
10.7.1 Preparation for maintenance and inspection work.............................................................................. 164
10.7.2 Servicing the engine ........................................................................................................................... 169
10.7.3 Servicing the fuel system.................................................................................................................... 175
10.7.4 Servicing the air lter system.............................................................................................................. 179
10.7.5 Servicing the cooling system .............................................................................................................. 182

CONTENTS
6
10.7.6 Servicing the hydraulic system ........................................................................................................... 188
10.7.7 Servicing the axles.............................................................................................................................. 197
10.7.8 Servicing the brakes ........................................................................................................................... 201
10.7.9 Servicing the tires and wheels............................................................................................................ 204
10.7.10 Servicing the cab vent lter................................................................................................................. 208
10.7.11 Servicing the air conditioning system ................................................................................................. 209
10.7.12 Servicing the electrical system ........................................................................................................... 210
10.8 Jump-starting / emergency starting .................................................................................................... 218
10.9 Loader storage.................................................................................................................................... 221
11 TROUBLESHOOTING AND EMERGENCY MAINTENANCE...................................................................... 224
12 SAFETY INSTRUCTIONS FOR REPAIRS................................................................................................... 228
12.1 General safety regulations for repairs................................................................................................. 228
12.2 Engine................................................................................................................................................. 231
12.3 Welding work ...................................................................................................................................... 231
12.4 Hydraulic system................................................................................................................................. 233
12.5 Brakes................................................................................................................................................. 233
13 FINAL SHUTDOWN OF THE LOADER / DECOMMISSIONING ................................................................. 234
14 APPENDIX .................................................................................................................................................... 236
14.1 Ordering replacement parts................................................................................................................ 236
14.2 Inspection verication ......................................................................................................................... 238
Index ............................................................................................................................................................ 242
List of gures ...................................................................................................................................................... 246

PREFACE 7
WL50
PREFACE
This Operator’s Manual describes how to operate and
service the loader. It provides operating and maintenance
personnel with the necessary knowledge of the loader‘s
functional characteristics in order to allow them to operate,
diagnose, maintain and repair the loader safely.
Observing the specications in this Operator’s Manual as-
sures:
proper, safe, professional operation of the loader•
professional service, cleaning and care of the loader•
Observe the applicable OSHA 1910 and 1926 safety regula-
tions when they apply to the user.
If required, the user/operator should supplement the Op-
erator’s Manual with instructions and regulations regarding
environmental protection and national regulations relating
to accident prevention.
All persons involved in work on or with the loader must
read and apply this Operator’s Manual, for example with
regard to:
operation, including setup, maintenance during opera-•
tion, care, disposal of auxiliary materials and operating
materials as well as disposal of the entire loader.
maintenance (inspection, servicing, care).•
transport.•
Should you have questions about this Operator’s Manual, please contact your dealer or visit us at www.wackerneuson.
com.
The Operator’s Manual must always be located in
the loader or at the place where it is being used.
This Operator’s Manual is not designed for pur-
poses of extensive maintenance work. Such work
must be performed by approved professionals.

BASIC INFORMATION
8
Each new user must be instructed before using the loader
for the rst time.
Instructions for using the Operator’s Manual:
Read the Operator’s Manual carefully before starting •
up the loader
Observe all the safety instructions•
Follow the regulations and laws applicable at the place•
of use
Keep the Operator’s Manual in the protected compart-•
ment provided in the operator station/cab.
BASIC INFORMATION1
If it is not possible to rule out hazards to persons or material
during work according to the loader‘s intended use, these
hazards will be indicated by means of safety labels.
Instructions relate to the direction of travel of the loader;
this means that, when directional information is given, it
can be assumed that this refers to the direction of travel
of the loader.

BASIC INFORMATION 9
WL50
Notes about this Operator’s Manual1.1
The specications, illustrations, weight information and
technical data are not binding and correspond to the state
of the art at the time of printing. We must reserve the right
to make changes without prior notice in the area of design,
conguration, appearance and technology on account of
the ongoing further development of the products.
Contact your dealer for clarication of use and/or instruc-
tions concerning intended use and attachments identied
in this Operator’s Manual.
Always strictly observe the safety instructions in this Opera-
tor’s Manual and the legal and trade association regulations
at the usage location.
This Manual provides information and procedures to safely
operate and maintain this Wheel Loader. For your own safety
and to reduce the risk of injury, carefully read, understand,
and observe all instructions described in this Manual.
Wacker Neuson Corporation expressly reserves the right
to make technical modications, even without notice, which
improve the performance or safety standards of its ma-
chines. The information contained in this manual is based
on machines manufactured up until the time of publication.
Wacker Neuson Corporation reserves the right to change
any portion of this information without notice.

BASIC INFORMATION
10
Explanation of the symbols used in this Operator’s Manual1.2
To ensure safe operation and maintenance of the wheel
loader, it is necessary that you follow all the instructions in
this Operator’s Manual.
The following symbols and the signal words DANGER,
WARNING, CAUTION, NOTICE, and NOTE, and the ad-
jacent text, indicate hazards and instructions.
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
DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Obey all safety messages that follow this symbol to►
avoid injury or death.
WARNING
WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury.
Obey all safety messages that follow this symbol to►
avoid possible injury or death.
CAUTION
CAUTION indicates a hazardous situation which, if
not avoided, could result in minor or moderate injury.
Obey all safety messages that follow this symbol to►
avoid possible minor or moderate injury.
NOTICE: Used without the safety alert symbol, NO-
TICE indicates a situation which, if not avoided, could
result in property damage.
Important general instructions
ENVIRONMENTAL NOTE
Important general instructions for environmental
protection
Note: Contains additional information important to a
procedure.

BASIC INFORMATION 11
WL50
Warranty and liability1.3
Observe the following points:
Do not make any changes to the wheel loader.•
Use only Wacker Neuson- approved attachments for •
your loader.
The loader many only be started up, operated and ser-•
viced as described in the Operator’s Manual.
Use the loader only if all the safety and protection de-•
vices are intact.
Observe the monitoring systems during operation.•
Repairs may only be performed by trained profession-•
als.
Follow the Operator’s Manual exactly.•
The manufacturer/supplier is not liable for damage
resulting from unintended use. The operator/user
is the sole bearer of this risk.
The Operator’s Manual must always be located in
the loader or at the place where it is being used.
Place the Operator’s Manual in the document pock-
et at the rear of the operator‘s platform.
Fig. 1
Document pocket

BASIC INFORMATION
12
The loader is used to dislodge and load material by moving
the loader forward, taking into account the safety instructions
/ regulations and time periods listed by Wacker Neuson in
the Operator’s Manual. One work cycle consists of picking
up, lifting, transporting and unloading the material.
Similar uses of the loader with alternative attachments which
do not change the safety requirements for the loader but
modify the way in which it is used are only acceptable when
attachments that have been expressly approved by Wacker
Neuson are employed. Special conditions apply if you use
optional Wacker Neuson attachments.
The intended operation is described in this Operator’s
Manual. The instructions describe how to operate, main-
tain, inspect and adjust the wheel loader safely. The repair
manual provides additional instruction for safely diagnosing
malfunctions and repairing the wheel loader to maintain
service and performance levels.
Intended use1.4
The loader has been built according to applicable standards
and regulations. Operation by inexperienced persons, or in
an unintended manner, can result in hazards that can lead
to personal risk and subsequent harm to the operator and
persons in the operating area of the wheel loader. Improper
use can damage the wheel loader as well as property in the
vicinity of operation.
Read and understand the operating instructions in this Man-
ual before operating this wheel loader. Before performing
production work, the operator should nd a remote site to
become familiar with the controls and machine response.
The machine shall be in serviceable condition before at-
tempting to use it as described in the operating instructions.
If the wheel loader is determined not to be in serviceable
condition, notify the site or machine supervisor to have it
repaired before use.
Unintended use can endanger the lives of operating
personnel or other persons and cause injuries or
extensive material damage.

BASIC INFORMATION 13
WL50
The wheel loader shall not be employed for any of the fol-
lowing work activities:
lifting or transporting people•
using it as a working platform•
using it to lift or transport loads without providing work•
equipment for it
pulling trailer loads•
operating after the machine has received unauthorized •
repairs
operating with unauthorized modications•

BASIC SAFETY INSTRUCTIONS
14
BASIC SAFETY INSTRUCTIONS2
Use the loader and attachments only as intended and •
in serviceable condition.
Observe the operating instructions described in this •
Operator’s Manual and all applicable work site safety
regulations.
Observe the permissible payloads.•
Wheel Loaders may only be used on suitable terrain.•
This Wheel Loader is equipped with a Starter Lock
/ Drive Lock which must be kept operational.

BASIC SAFETY INSTRUCTIONS 15
WL50
Organizational measures2.1
The following safety instructions are directed at the operator
/ user of the loader.
Always keep the Operator’s Manual in the compartment •
provided for it.
As a supplement to the Operator’s Manual, universally•
valid legal and other binding regulations relating to road
trafc, compulsory coverage, accident prevention and
environmental protection must be observed, and users
must be instructed to observe them. This applies in par-
ticular to the maximum speed, depending on the model
and the permissible total weight of the loader.
If required, instruct that personal protective equipment be •
worn. This applies particularly to the handling of harmful
substances at the location of use.
Supplement the Operator’s Manual with instructions, •
including supervisory and reporting requirements, taking
into account differences between various companies,
e.g. with regard to the organization of work, work pro-
cesses or personnel used.
Personnel who have been assigned to operate the loader •
must have read the Operator’s Manual before operating
the wheel loader especially the chapter Basic Safety
Instructions.
Observe all safety messages on the loader and in the•
Operator’s Manual.
Make sure that all safety messages on the machine •
are legible.
If the loader becomes unserviceable, stop operating and •
inform the supervisor that the wheel loader is not func-
tioning normally. Alternately, contact a trained technician
to diagnose and correct the condition before resuming
operation.
No modications shall be made to the wheel loader. •
Contact your Wacker Neuson dealer for specic advice
regarding the use of the wheel loader and approved
attachments.

BASIC SAFETY INSTRUCTIONS
16
If worn or damaged parts need replacement, use only•
Wacker Neuson replacement parts to ensure optimum
performance and safety.
Inspect hydraulic hoses and ttings prior to the start of •
each work shift. Correct any observed leaks or abrasion
issues before operating the machine. Extended envi-
ronmental exposure can cause undetectable damage.
Replace hose assemblies periodically as advised in the
maintenance schedule.
Thoroughly inspect the wheel loader before each op- •
erating shift.
The Wheel Loader Repair Manual describes the special •
tools, diagnosis techniques, repair sequence proce-
dures, lifting and supporting devices needed to repair this
machine. To avoid unnecessary hazards and possible
damage to the Wheel Loader, do not attempt to repair
this machine without complying with the instructions in
the Repair Manual.
Make the location and means of operation of the re •
extinguishers known, and consider the options for re
detection and ghting.
A Falling Object Protection System (FOPS) is available •
for the Wheel Loader Operator Protection System. OSHA
and MSHA require this protection when operating with
overhead hazards. Contact your Wacker Neuson dealer
for advice and availability of a certied FOPS.

BASIC SAFETY INSTRUCTIONS 17
WL50
Selection and qualication of personnel / basic duties2.2
Personnel being trained, educated, instructed or partici- •
pating in a general training program may only work on
or with the machine under constant supervision of an
experienced, authorized supervisor.
Work on the machine‘s electrical equipment may only be •
performed by an electrician or by trained persons under
the direction and supervision of an electrician.
Work on the chassis, brakes and steering system may•
only be performed by trained, specialized personnel.
Only trained, specialized personnel with specic knowl- •
edge of and experience in hydraulics may work on hy-
draulic units.
The operator of the wheel loader must be qualied to •
operate the machine through demonstration of com-
prehension of the operating instructions. No one shall
operate the wheel loader if impaired due to intoxication
or drug reaction.
Diagnosis and repair of the wheel loader shall be per- •
formed by trained competent technicians unimpaired by
intoxication or drug reaction.
Prohibit unauthorized and untrained people from access •
to the starting key and operation of the wheel loader.
The wheel loader operator is responsible for visually •
monitoring the work area of the wheel loader and pre-
venting anyone from entering the area without permis-
sion. If a person enters the area while the wheel loader
is in operation, the operator shall stop the wheel loader
and instruct the person to leave the work area until the
wheel loader has been stopped in a safe mode. The
person may then approach the machine in full view of
the operator.

BASIC SAFETY INSTRUCTIONS
18
Safety instructions for certain operating phases2.3
If the wheel loader does not respond as expected to the •
operator command or exhibits a malfunction, stop the
machine, contact the supervisor and restore the machine
to serviceable condition before resuming operation.
Start and operate the loader only from the operator’s •
seat.
When switching on and off, observe the indicator dis- •
plays in accordance with the Operator’s Manual.
Make sure no one is located in the operating area of the •
loader before starting the engine.
After starting the engine and conrming that the indi- •
cators are responding correctly, activate the steering,
brakes, lights, signals and loader/accessory functions
to conrm that these devices are responding correctly
to the control command.
To avoid damage to the wheel loader, position the loader •
bucket or accessories before moving the machine. Re-
conrm that there are no people in the work or travel
area before moving the machine.
The safety instructions are directed at all persons involved
in work on or with the loader.
Safety instructions for normal operation2.3.1
Refrain from any measures that could put safety into •
question.
Before starting work, familiarize yourself with the working •
environment in which you will be using the loader. The
working environment includes, for example, obstacles in
the working and trafc area, the bearing capacity of the
ground and the necessary safeguarding of the location
to allow it to be used as a public trafc area.
Take precautions to ensure that the loader is operated•
only in a safe, serviceable state.
Only operate the loader if all the protection devices and •
safety devices, e.g. detachable protection devices, sound
absorbers and exhaust equipment, are serviceable and
operational.
Check the loader at least once a day for visible de- •
fects.