Wacker Neuson DPU 2950 User manual

www.wackergroup.com
Operator´s Manual
VIBRATORY PLATE
DPU 2950
DPU 2960
DPU 2970
0200165en - 10.2002
0007881 100
0007883 100
0007880 100

H00400GB 1
CONTENTS
Type Item no.
DPU 2950 0007881 ...
DPU 2960 0007883 ...
DPU 2970 0007880 ...

2

T00778GB 3
FOREWORD
Foreword
For your own safety and protection from bodily injuries, carefully read, understand and follow the safety instruc-
tions in this manual.
Please operate and maintain your Wacker machine in accordance with the instructions in this manual. Your
Wacker machine will reward your attention by giving trouble-free operation and a high degree of availability.
Defective machine parts are to be replaced as soon as possible.
All rights, especially the right for copying and distribution are reserved
Copyright by Wacker Construction Equipment AG
No part of this publication may be reproduced in any form or by any means, electronic or mechanical, including
photocopying, without express permission in writing from Wacker Construction Equipment AG.
Any type of reproduction, distribution or saving on data carriers of any type or method not authorized by Wacker
represents an infringement of valid copyrights and will be prosecuted.
We expressly reserve the right to technical modifications- even without express due notice - which aim at im-
proving our machines or their safety standards.

0106619GBIVZ.GB.doc 4
TABLE OF CONTENTS
FOREWORD 3
SAFETY INSTRUCTIONS 5
General instructions 5
Operation 5
Safety checks 6
Maintenance 6
Transport 6
Maintenance checks 6
TECHNICAL DATA 7
DESCRIPTION 8
Field of application 8
Dimensions 8
Max. admissible inclination 8
MAINTENANCE 9
Maintenance schedule 9
Service instructions 10
Hydraulic control 10
Mounting instruction 10
MOTOR 11
Starting operating 11
Instructions regarding the motor 11
Notes on automatic decompression system 13
Engine start 13
Additional suggestions for starting at very low temperatures 14
EC - CONFORMITY-CERTIFICATE 15

SV00006GB 5
SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS FOR THE USE OF VIBRATORY
PLATES WITH COMBUSTION ENGINES
General instructions
1. Vibratory plates may only be operated by persons who
* are at least 18 years of age
* are physically and mentally fit for this job
* have been instructed in guiding vibratory plates and proved their ability for the job to the employer
* may be expected to carry out the job they are charged with carefully.
The persons must be assigned the job of guiding vibratory plates by the employer.
2. Vibratory plates may only be used for compaction jobs. Both the manufacturer’s operating instructions
and these safety instructions have to be observed.
3. The persons charged with the operation of vibratory plates have to be made familiar with the necessary
safety measures relating to the machine. In case of extraordinary uses the employer shall give the nec-
essary additional instructions.
4. It is possible that this vibratory plate exceeds the admissible sound level of 89 dB (A). According to the
rules for the prevention of accidents regarding emission of noise, the employees have to wear ear pro-
tection if the sound level reaches 89 dB (A) or more.
Operation
1. When starting a diesel engine with a starter crank make sure you have assumed a proper position with
respect to the engine and that your hands are placed properly on the crank.
☛ATTENTION! Only use the original engine manufacturer’s safety starting crank.
To avoid a possible return kick, turn safety starting crank through with full force until
the engine starts running.
2. The functioning of operating levers or elements is not to be influenced or rendered ineffective.
3. During operation the operator may not leave the control elements.
4. The operator has to stop the engine of the vibratory plate before going on breaks. The machine has to
be placed such that it cannot turn over.
5. Stop engine before filling fuel tank. When refilling fuel tank, do not allow fuel to come into contact with
the hot parts of the engine or spill onto the ground.
6. Do not smoke or handle open fire near this machine.
7. The tank lid must fit tightly. Shut off fuel cock, if available when stopping the engine. For long distance
transports of machine operated by fuel or fuel - mixtures, the fuel tank has to be drained completely.
☛ATTENTION! Leaky fuel tanks may cause explosions and must therefore be replaced immediately.
8. Do not operate the machine in areas where explosions may occur.
9. Make sure that sufficient fresh air is available when operating vibratory plates with combustion engines
in enclosed areas, tunnels, adits and deep trenches.
10. During operation keep your hands, feet and clothes away from the moving parts of the vibraton plate.
Wear safety shoes, and eye protection glasses in case of trench operation where falling sand stones
maybe ejected.
11. When working near the edges of breaks, pits, slopes, trenches and platforms, vibratory plates are to be
operated such that there is no danger of their turning over or dropping in.

SV00006GB 6
SAFETY INSTRUCTIONS
12. Make sure the soil or subsoil to be compacted has a high enough load carrying capacity.
13. Use appropriate protective clothing while working or while carrying out maintenance work.
14. When traveling backwards the operator has to guide the vibration plate laterally by its guide handle so
thathewillnotbesqueezedbetweenthehandleandapossibleobstacle.Specialcareisrequiredwhenwork
ing on uneven ground or when compacting coarse material. Make sure of a firm stand when operating
the machine under such conditons.
15. Vibratory plates are to be guided such that hand injuries caused by solid objects are avoided.
16. Vibratory plates have to be guided such that their stability is guaranteed.
17. Machines with integrated transport trolley may not be parked or stored on the trolley. This device has
only been designed to transport the machine.
Safety checks
1. Vibratory plates may only be operated with all safety devices installed.
2. Before starting operation, the operator has to check that all control and safety devices function properly.
3. Immediately notify your supervisor or superintendent if you have determined defects in the safety devic-
es or other defects which could endanger the safe operation of the machine or which could endanger
the environment.
4. In case of defects jeopardizing the operational safety of the vibration plate, the machine has to be
stopped immediately.
5. Process materials and operating fuels must be stowed away in receptacles or containers marked ac-
cording to the respective manufacturers specifications.
Maintenance
1. Only use original spare parts. Modifications to this machine, including the adjustment of the maximum
engine speed set by the manufacturer, are subject to the express approval of Wacker. In case of non-
observance all liabilities shall be refused.
2. All drive units have to be switched off before carrying out maintenance jobs. Deviations from this are only
allowed if the maintenance or jobs require a running engine.
3. When working on vibratory plates equipped with electric starter, disconnect battery before carrying out
maintenance or repair jobs on the electric parts of the machine.
4. Remove pressure from hydraulic lines before working on them. Caution: take care when removing hy-
draulic lines, for the oil may be very hot (up. over 80oC). Precautions are to be taken to prevent oil from
splashing into the operator’s eyes.
5. As soon as maintenance and repair jobs have been completed all safety devices have to be reinstalled
properly.
6. Do not hose down the machine with water after each use to avoid possible malfunctions. Do not use high
pressure washers nor chemical products.
Transport
1. During transport, loading and unloading of vibration plates by means of lifting devices, appropriate sling-
ing means or hooks have to be used on the lifting points provided for this purpose on the vibratory plate.
2. The load-carrying capacity of the loading ramps has to be sufficient and the ramps have to be secure
such that they cannot turn over. Make sure that no one be endangered by machines turning over by slip-
ping or by moving machine parts.
3. When being transported on vehicles, precautions have to be taken that vibration plates do not slip or turn
over.
Maintenance checks
According to the conditions and frequency of use, vibratory plates have to be checked for safe operation at
least once a year by skilled technicians, such as those found at Wacker-service depots and have to be repaired
if necessary.
Please also observe the corresponding rules and regulations valid in your country.

TD00400GB 7
TECHNICAL DATA
DPU 2950 DPU 2960 DPU 2970
Item no. 0007881 ... 0007883 ... 0007880 ...
Lowest working height mm: 790
Size of base plate (width x length) mm: 500 x 700 600 x 700 700 x 700
Operating weight kg: 192 198 203
Power transmission Fromdriveenginevia
centrifugal clutch and V-belts
direct to exciter
Exciter
Vibrations min-1(Hz): approx. 5400 (90)
Multigrade oil SAE 10 W 40
Drive motor Air-cooled single-cylinder 4 stroke diesel engine
Piston displacement cm3: 353
Engine speed min-1: 2850 + 100
Oil SAE 10 W 40
Fuel Diesel
Fuel consumption l/h: 1,2
Tank capacity l: 5
The required sound specifications, called-for by the EC-Machine Regulations per Appendix 1, Paragraph
1.7.4.f, are
- sound pressure level at the operator's location LpA = 95 dB(A)
The sound values were determined according to ISO 3744 for the sound power level (LwA) and, alternately,
ISO 6081 for the sound pressure level (LpA) at the operator's location.
The weighted effective acceleration value, determined according to ISO 8662, Part 1, is 7,5 m/s2.
The sound and vibration measurements were carried out and obtained with the machine working on crushed
gravel at nominal engine speed.

T00135GB 8
DESCRIPTION
Field of application
The DPU 2950/2960/2970 are suited to compact all kinds of soils, even cohesive soils in trench and surface
compaction. They are also suited to compact blacktop surfacings and to vibrate interlocking paving stones.
Due to its optimum ratio of centrifugal force to contact area the DPU 2950 is the machine of this series which
can be most universally used.
The DPU 2960/2970 is used whenever high area capacity is required.
Dimensions
DPU 2950 DPU 2960 DPU 2970
A 700 700 700
B 1380 1380 1380
C 780 780 780
D 500 600 700
E 1020 1020 1020
Max. admissible inclination

T00132GB 9
MAINTENANCE
Maintenance schedule
Check all external screw connections for tight fit approx. 8 hours after first operation.
Parts Maintenance jobs Maintenance interv.
Air filter Oil bath air filter - Check oil pan for oil level and dirt. daily
Clean or top up if necessary.
Dry-type air filter - see visual maintenance display,
clean or replace filter cartridge if necessary.
Engine Check oil level, top up if necessary.
Check crank and crank carrier for correct fastening.
Exciter Check for tightness.
Engine First oil change. after 25 hours
Other parts Grease moveable locking device, and spindle for pole weekly
height adjustment.
Tow-bar head Check oil level, top up if necessary. monthly
V-belt Check V-belt tension - retension, if need be.
Other parts Check fastening screws of protective frame and
central suspension for tight fit.
Engine Further oil changes. after 150 hours
Checking coolings fins for dirt-clean dry if necessary.
Tighten all accessible screw connections.
Exciter Oil change.
Valve clearance Check, set to 0,1 mm when motor is cold. after 300 hours
Injection nozzle Function check 200 bars.

T00132GB 10
MAINTENANCE
Service instructions
1. Adjusting the V-belt tension
(First and most important adjustment after the first 5 to 20 hours of operation).
Remove belt guard. Remove nuts situated on the motor V-belt pulley, remove V-belt pulley half. Remove
necessary number of spaces (the removal of one spacer is usually sufficient). Install the removed spacers
on the outside of the V-belt pulley. (If one washer is removed, install it on the outer half of the pulley, of two,
one on the outer and one on the inner V-belt pulley halft, etc.). This V-belt alignment is maintained. Install
spring washers in a way such that the large diameter comes to lie on the motor V-belt pulley. Loosen nuts
and under continual rotation of the motor V-belt pulley tighten nuts alternately.
2. Lubricating the exciter
On delivery of the machine, the exciter is filled with oil. Change oil after every 250 hours of operation, use
approx. 0,75 liter SAE 10 W 40 oil. For this purpose place vibration plate on level ground. Remove drain
plug (red). Correct oil level: Oil should reach the lower flange of the threaded hole.
Hydraulic control
When checking the oil level in the motor and exciter, also check oil level in the centre pole head and top up if
necessary (Top up to mark when centre pole is in vertical position). If there is too much oil in the centre pole
head the reverse motion is hard to engage. If the quantity of oil is insufficient the advance speed is reduced.
We use hydraulic oil Fuchs Renolin MR 520 suitable also for low temperatures in the hydraulic systems as
standard.
Mounting instruction
1. Exciter
When disassembling exciter components, always remove eccentric weights first. When assembling, the ec-
centric weights have to be installed last of all. When installing exciter shafts mind marking of toothed gears.
Assembly of exciter shaft is correct when all eccentric weights point down while piston is at half stroke. Dur-
ing assembly of eccentric weights on exciter shaft, keep shafts blocked to avoid pinching of fingers. Tighten
all screws with the prescribed torque, mind qualities of screws (see screw head).
2. Hydraulic control
Bleed hydraulic system after having topped up with oil, then check oil level again (total quantity required
approx. 1,3 liters).
3. Bleeding
Place handle into vertical position. Slightly pull back control lever and let it go again. Open bleeding screw
on control housing at exciter until no air bubbles appear in oil. Tighten bleeding screw again.
4. Centre pole head
☛ATTENTION! When disassembling the centre pole head, please mind that the piston is installed un-
der spring tension. When assembling, locate toothed rod in toothed gear in a way such
that the handle is set a 90oto the centre pole head when piston is fully extended.
5. Test-run equipment for approx. 5 min. to bleed air from system.

T00136GB 11
MOTOR
Starting operating
1. Motor
Check oil level, top up with oil if necessary, use HD-brand oil SAE 10 W 40. Do not change from one brand to
the other. Top up with oil to upper mark of dip stick (1,2 l).
2. Oil bath air filter
a) Before starting operation fill with oil mark in oil pot.
b) Clean oil bath air filter when working under very dusty conditions. Rinse filter in fuel, shake it carefully and
let it drip dry for approx. 15 minutes. Top up with oil.
3. Maintenance
Motor: First oil change after 25 hours of operation, thereafter, after every 150 hours of operation:
a) Clean oil bath air filter.
b) Check valve clearances adjust if necessary when motor is cold, see “Information regarding the motor”.
c) Replace fuel filter. When installing new filter make sure that the direction of flow of the new filter is correct,
(see arrow).
4. Starting the motor
5. Stopping the motor
Do not stop motor while under full load. Reduce lod first and let it idle for a short while, then stop motor by
means of speed lever.
Instructions regarding the motor
1. Adjusting the valve clearance
The valve clearance should be 0,1 mm when the motor is cold. To adjust clearance when motor is cold, pro-
ceed as follows:
a) Place decompression lever downwards in vertical position. Remove cylinder head cover, turn motor in di-
rection of rotation until you feel resistance of compression.
b) Check valve clearance - between rocker arm and valve stem. Use feeler gauge, thickness 0,1 mm.
c) If valve clearance is not correct, loosen hexagon nut. Use screw driver to adjust setting screw such that
after adjusting the nut, the feeler gauge can be pulled through between the rocker arm and the valve stem.
Slight resistance should be felt when doing so.
2. Adjusting the decompression device
The decompression device is to be adjusted if the motor is not decompressed when the decompression lever
is in position 1 (approx 45oto the left or right from its vertical downward position). To adjust decompression
proceed as follows:
a) Remove cylinder head cover.
b) Turn motor in direction of rotation until you fee resistance of compression (same position as to adjust valve
clearance).
c) Turn decompression lever into direction of rotation. Turn is by approx. 60o(until it locks in position).
d) Loosen locking nut (M 6) and setting screw on rocker arm until the latter can be moved.
e) Turn setting screw to the right until rocker arm touches the valve stem.
f) In this position continue to turn setting screw by an additional 1/4 of a turn (90o). Lock setting screw by tig-
htening the nut.

T00136GB 12

T00136GB 13
MOTOR
Notes on automatic decompression system
The engine has been provided with an automatic decompression system to ease starting.
☛ATTENTION! Avoid damage to the system by turning decompression lever only in direction of arrow
(see fig. 1).
Engine start
1) Open to full throttle.
2) Decompression lever in vertical position (as
in fig. 1).
3) Pull starter knob.
4) Insert starting crank (oil gliding parts).
5) Turn automatic decompression lever approx.
90oin direction of arrow until a first clicking
sound denotes engaging of automatic sys-
tem.
6) Stand sideways to the engine, feet slightly
apart, and on the side in which the crank will
be moved to from its lower position (fig. 2).
7) Place one hand on the equipment to brace
yourself and turn crank with other hand.
☛ATTENTION! While cranking, always
keep firm grip on crank
handle to avoid sudden
slippage.
Fig.1

T00136GB 14
MOTOR
8) Turn crank slowly at first until catch grabs, then turn always
faster.
9) When automatic decompression lever returns to its vertical
position, highest crank turning speed must have been
reached. Engine fires up and reaches maximum rpm’s.
Starter knob returns to initial position automatically.
☛ATTENTION! If cranking procedure is too slow, en-
gine may start up in wrong direction. Air will be sucked in
through the exhaust and the air filter turns into an exhaust.
Fire hazard! Turn off engine and start cranking procedure
again.
Pull starting crank out as soon as the engine starts run-
ning. Then set engine’s rpm’s to idle. Let engine warm up
for 7 minutes before starting with the actual compaction
job.
Fig. 2
☛ATTENTION! Use of starting aids, such as starting sprays, is forbidden (even in extremely cold temper-
atures) because they are very dangerous. Single out defective cranks (e.g. damaged
claws, missing handle tubes) and replace.
Warning: Incorrect starting procedures, i.e. all possible and imaginable deviations from the above
mentioned, may lead to bodily injury!
Additional suggestions for starting at very low temperatures
- Insert crank correctly, turn automatic decompression lever to first notch and turn engine “free”, i.e., while
decompressed, turn engine over 10 to 20 times with crank. By doing this, the resistance to turn of the engine
will diminish due to the change in the viscosity of the lubricating oil. Simultaneously the correct functioning
of the injection nozzle (rattling) and the jetting of the fuel may be heard.
- Under extremely low temperature conditions (below -5oC), starting oil dosification device should be used.
For engines up to approx. 6 kW (8 HP) up to 2 dosages, over 6 kW (8 HP) up to 3 dosages.
☛ATTENTION! A higher than recommended dosage could lead to a back-swing of the crank.

C0004807.GB
EC - CONFORMITY-CERTIFICATE
Wacker Construction Equipment AG , Preußenstraße 41, 80809 München
hereby certify that the construction equipment specified hereunder:
1. Category: Vibratory plate
2. Type: DPU 2950 / DPU 2960 / DPU 2970
3. Equipment item number: 0007881 ... / 0007883 ... / 0007880 ...
4. absolute installed power: 4,1 kW
has been evaluated in conformity with Directive 2000/14/EC:
and has been manufactured in accordance with the following directives:
2000/14/EG
98/37/EG
EN 500-1
EN 500-4
..................................................
Dr. Sick
Board of Directors
File certificate carefully
Conformity
assessment
procedure
At the following notified
body Measured sound power level Guaranteed sound power level
Annex VIII VDE Prüf- und
Zertifizierungsinstitut
Zertifizierungsstelle
Merianstraße 28
63069 Offenbach/Main
106 dB(A) 108 dB(A)

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