The signatories hereby certify that the specified powered industrial truck conforms to
the EU Directive 2006/42/EC (Machine Directive) and 2004/108/EEC (ElectroMagnetic Compatibility, EMC) including their amendments as translated into national
legislation of the member countries. The signatories are individually empowered in
each case to compile the technical documentation.
construction
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Foreword
Notes on the operating instructions
The present ORIGINAL OPERATING INSTRUCTIONS are designed to provide
sufficient instruction for the safe operation of the industrial truck. The information is
provided clearly and concisely. The chapters are arranged by letter and the pages are
numbered continuously.
The operator manual details different industrial truck models. When operating and
servicing the industrial truck, make sure that the particular section applies to your
truck model.
Our trucks are subject to ongoing development. Jungheinrich reserves the right to
alter the design, equipment and technical features of the system. No guarantee of
particular features of the truck should therefore be assumed from the present
operating instructions.
Safety notices and text mark-ups
Safety instructions and important explanations are indicated by the following
graphics:
DANGER!
Indicates an extremely hazardous situation. Failure to comply with this instruction will
result in severe irreparable injury and even death.
WARNING!
Indicates an extremely hazardous situation. Failure to comply with this instruction
may result in severe irreparable injury and even death.
CAUTION!
Indicates a hazardous situation. Failure to comply with this instruction may result in
slight to medium injury.
NOTE
Indicates a material hazard. Failure to comply with this instruction may result in
material damage.
ZUsed before notices and explanations.
tIndicates standard equipment
oIndicates optional equipment
Copyright
Copyright of these operating instructions remains with JUNGHEINRICH AG.
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Jungheinrich Aktiengesellschaft
Am Stadtrand 35
22047 Hamburg - Germany
Tel: +49 (0) 40/6948-0
www.jungheinrich.com
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Table of Contents
ACorrect Use and Application ...................................................11
The industrial truck described in the present operating instructions is designed for
lifting, lowering and transporting load units.
It must be used, operated and serviced in accordance with the present instructions.
Any other type of use is beyond the scope of application and can result in damage to
personnel, the industrial truck or property.
2Correct application
NOTE
The maximum load and load distance are indicated on the load chart and must not be
exceeded.
The load must rest on the load handler or be lifted by an attachment approved by the
manufacturer.
The load must rest on the back of the fork carriage and centrally between the forks.
– Lifting and lowering of loads.
– Transporting lowered loads over short distances.
– Do not travel with a raised load (>30 cm).
– Do not carry or lift passengers.
– Do push or pull load units.
– Occasional towing of trailer loads.
– When towing trailer loads the load must be secured on the trailer.
– The permissible trailer load must not be exceeded.
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3Approved application conditions
DANGER!
Do not exceed the permissible surface and spot load limits on the travel routes.
At blind spots get a second person to assist.
The driver must ensure that the loading dock / ramp cannot move or come loose
during loading / unloading.
– Operation in industrial and commercial environments.
– Permissible temperature range -20°C to 40°C.
– Operation only on secure, level surfaces with sufficient capacity.
– Operation only on routes that are visible and approved by the proprietor.
– Negotiating inclines up to a maximum of 15 %.
– Do not negotiate inclines crosswise or at an angle. Transporting loads downhill.
– Operation in partially public traffic.
WARNING!
Extreme conditions
XSpecial equipment and authorisation are required if the truck is to be constantly
used in extreme conditions, especially in dusty or corrosive atmospheres.
XThe truck is not authorised for use in areas at risk of explosion.
XIn adverse weather conditions (thunder, lightning) the industrial truck must not be
operated outside or in endangered areas.
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4Proprietor responsibilities
For the purposes of the present operating instructions the “proprietor” is defined as
any natural or legal person who either uses the industrial truck himself, or on whose
behalf it is used. In special cases (e.g. leasing or renting) the proprietor is considered
the person who, in accordance with existing contractual agreements between the
owner and user of the industrial truck, is charged with operational duties.
The proprietor must ensure that the industrial truck is used only for the purpose for
which it is intended and that there is no danger to life and limb of the user and third
parties. Furthermore, accident prevention regulations, safety regulations and
operating, servicing and repair guidelines must be followed. The proprietor must
ensure that all users have read and understood these operating instructions.
NOTE
Failure to comply with the operating instructions shall invalidate the warranty. The
same applies if improper work is carried out on the truck by the customer or third
parties without the permission of the manufacturer.
5Adding attachments and/or accessories
Adding accessories
The mounting or installation of additional equipment which affects or enhances the
performance of the forklift truck requires the written permission of the manufacturer.
Local authority approval may also need to be obtained.
Local authority approval does not however constitute the manufacturer’s approval.
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BTruck Description
1Application
The DFG / TFG 425s - 435s is a four-wheel IC motor sit-down forklift truck. The DFG
series are diesel engine trucks, while the TFG series are fitted with a petrol engine for
LPG operation.
The DFG / TFG 425s - 435s is a cantilever counterbalanced truck which can lift,
transport and deposit loads using the load handler attached in front.
Closed bottom pallets can also be lifted.
The DFG / TFG 425s - 435s is equipped with a hydrostatic drive. The combustion
engine drives a high pressure pump for the hydraulic functions and two hydraulic
motors to drive wheels.
1.1Truck models and rated capacity
The rated capacity depends on the model. The rated capacity can be derived from
the model description.
DFG425
DFG Model Description
4Series
25Rated capacity x 100 kg
The rated capacity does not generally match the permissible capacity. The capacity
can be found on the load chart attached to the rack.
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2Assemblies and Functional Description
2.1Assembly Overview
15
1
14
2345
S
T
A
R
T
13
12
11
10
9
ItemDescriptionItemDescription
1 t Driver's seat9 t Drive
2 t Overhead guard10 t Emergency Disconnect switch
3 t Steering wheel11 t Engine bonnet
4 t Mast12 t Steer axle
5 t Fork carriage 13 t Counterweight
6 t Fork tines14 t Trailer coupling
7 t Lift mechanism control15 t LPG bottle (TFG only)
8 t Control / display unit
t= Standard equipmento= Optional equipment
6
7
8
16
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2.2Functional Description
Chassis
The chassis, in conjunction with the counterweight, forms the supporting base
structure of the truck. It is used to support the main components.
The hydraulic oil reservoir is integrated on the right-hand side and the fuel tank for the
DFG series is on the left side in the chassis.
Operator position and overhead guard
The overhead guard (2) comes in a range of models and protects the driver from
falling objects and other external influences.
All the controls are ergonomically arranged. The steering column and driver's seat
can be adjusted individually.
The controls and warnings on the display unit (8) enable the system to be monitored
during operation, thereby ensuring a very high level of safety.
Steering
The steer cylinder of the hydrostatic steering is integrated in the steer axle (12) and
is controlled by the power steering. The steer axle is fully floating in the chassis to
ensure excellent grip even on non-level surfaces.
Wheels
All wheels are located within the truck geometry. A choice of pneumatic or
superelastic tyres are available.
Engine
High performance, water-cooled diesel and LPG engines with long useful lives and
low consumption and emission levels.
Electrical system
12 volt system with threephase alternator. A start block prevents malfunctions when
the truck is powered up. For diesel engines, a rapid pre-heat system is installed; LPG
motors have an electronic ignition system for rapid and trouble-free engine starting.
The key switch is used to stop the engine.
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Drive system and brakes
Both drive wheels are powered by individual hydraulic motors which in turn are driven
by a hydraulic pump. Forward/reverse or neutral can be set with the travel direction
switch on the control panel (7).
The truck brakes to a halt via the hydraulic motors, keeping energy consumption to a
minimum. The truck can brake more quickly if you also apply the service brake.
The parking brake is an automatic multi-plate brake that can also be applied
manually.
Hydraulic system
A multi-pilot valve allows for sensitive operation of the functions via the controls. A
speed-controlled hydraulic pump ensures a proportionate and efficient supply to the
hydraulic functions.
Mast
Two or three-stage masts, optionally with free lift function; narrow mast sections
ensure excellent visibility of the forks and attachments. Fork carriage and mast run
on permanently lubricated and hence maintenance-free support rollers.
Attachments
The trucks can be optionally fitted with mechanical and hydraulic attachments.
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3Technical Specifications
All technical details refer to standard trucks.
Values indicated with *) may vary, depending on the
types of equipment used (e.g. mast, cabin, tyres etc.).
ZTechnical data specified in accordance with VDI 2198.
Technical modifications and additions reserved.
3.1Performance data
DFG 425s-435s
DescriptionDFG 425s DFG 430s DFG 435s
Capacity
Q
(where C = 500 mm) 1)
C Load centre distance500500500mm
Travel speed* with /
without load
Lift speed, with / without
load
Lowering speed with /
without load
Gradeability 2)*
with / without load
Acceleration* with /
without load to 15 m
Available working
pressure for attachments
Oil flow for attachments303030l/min
1)
for vertical mast.
2)
The values shown represent the maximum gradeability to overcome short
differences in height and surface unevenness (surface edges). The truck must not
operate on inclines of more than 15%.
250030003500kg
19.6/19.6 20.8/20.8 20.8/20.8km/h
0.56/0.56 0.56/0.56 0.48/0.48 m/s
0.56/0.56 0.56/0.56 0.56/0.56 m/s
272421 %
4.9/4.45.4/4.65.4/4.7s
160160160bar
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TFG 425s-435s
DescriptionTFG 425s TFG 430s TFG 435s
Capacity
Q
(where C = 500 mm) 1)
250030003500kg
C Load centre distance500500500mm
Travel speed* with /
without load
Lift speed, with / without
load
Lowering speed with /
without load
Gradeability 2)*
with / without load
Acceleration* with /
without load to 15 m
Available working
pressure for attachments
19.6/19.6 20.8/20.8 20.8/20.8km/h
0.56/0.56 0.56/0.56 0.48/0.48 m/s
0.56/0.56 0.56/0.56 0.56/0.56 m/s
272421 %
5.7/5.06.0/5.16.1/5.2s
160160160bar
Oil flow for attachments303030l/min
1)
for vertical mast.
2)
The values shown represent the maximum gradeability to overcome short
differences in height and surface unevenness (surface edges). The truck must not
operate on inclines of more than 15%.
When replacing tyres/rims fitted at the factory, always use original spare parts or tyres
approved by the manufacturer. Otherwise the manufacturer's specification cannot be
guaranteed.
If you have any queries please contact the manufacturer's customer service
department.
Mast
weight (kg)
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DFG/TFG 425s - 435s
DescriptionDFG / TFG
Pneumatic*7.0 - 12-16PR
Front tyres
Ty r e p re s su r e
Torque NM170170170
Pneumatic*
Rear tyres
Ty r e p re s su r e
Torque NM200200200
425s430s435s
SE*7.0 - 1227 x 10-1227 x 10-12
bar
27 x 10-12-
20PR
1099
27 x 10-12-
20PR
SE*6.50 x 106.50 x 106.50 x 10
bar
6.50 x 1010PR
7.757.757.75
6.50 x 1010PR
6.50 x 1010PR
25
*) The models listed in the table correspond to the standard version. Other tyres can
be used depending on the truck's equipment.
ZThe vibration acceleration acting on the body in the operating position is, in
accordance with standard procedures, the linearly integrated, weighted
acceleration in the vertical direction. It is calculated when travelling over bumps at
constant speed. These recordings were taken on a single occasion and must not
be confused with the human vibrations of the "2002/44/EC/Vibrations" operator
directive. The manufacturer offers a special service to measure these human
vibrations, (see "Human vibration measurement" on page 189).
Electromagnetic compatibility (EMC)
The manufacturer confirms that the truck adheres to the limits for electromagnetic
emissions and resistance as well as the static electricity discharge test in accordance
with EN 12895 as well as the standardised instructions contained therein.
ZNo changes to electric or electronic components or their arrangement may be
made without the written agreement of the manufacturer.
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WARNING!
Medical equipment can be damaged by non-ionised radiation
Electrical equipment on the truck emitting non-ionised radiation (e.g. wireless data
transmission) can affect operators' medical equipment (pacemakers, hearing aids
etc.) and result in malfunctions. Consult with a doctor or the medical equipment
manufacturer to clarify whether it can be used near the industrial truck.
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3.8Conditions of use
Ambient temperature
– operating at -20°C to 40°C
ZSpecial equipment and authorisation are required if the truck is to be constantly
used in conditions of extreme temperature or air humidity fluctuations.
3.9Electrical requirements
The manufacturer certifies compliance with the requirements for the design and
manufacture of electrical equipment, according to EN 1175 "Industrial Truck Safety Electrical Requirements", provided the truck is used according to its purpose.
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4Identification points and data plates
ZWarnings and notices such as capacity charts, strap points and data plates must
be legible at all times. Replace if necessary.
25
27
21
29
22
16
17
18
19
20
21
23
24
17
26
28
1
2
5
1
4
1
1
0
6
2000
3
9
7
2
1
8
30
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32
31
24
29
Item Description
16 Do not travel with raised load or mast forward tilt with raised load
17 Strap points for crane lifting
18 Data plate
19 Noise level
20 “Do not carry passengers” warning
21 Fuel
22 Wear seat belt
23 Serial number, engraved in chassis below the engine bonnet
24 Jack contact points
25 Do not step onto or beneath the load, risk of trapping with moving mast
26 Maximum body size (o)
27 Risk of tip over
28 Read operating instructions
29 Test plaque (o)
30 Capacity
31 Attachment capacity
32 Hydraulic oil specification
33 Model description
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4.1Data plate
3435373638
Item DescriptionItem Description
34Type40Year of manufacture
35Serial number41Load centre (mm)
36Rated capacity (kg)42Output
37Battery voltage (V)43Min./max. battery weight (kg)
38Net weight w.o. battery (kg)44Manufacturer
39Option45Manufacturer’s logo
4039
41
42
43
44
45
ZFor queries regarding the truck or ordering spare parts always quote the truck serial
number (35).
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