alkitronic H Series User manual

Operation and
Maintenance Manual
Hydraulic Torque Wrench Series H
H-AT
H-AX

2
Operation and Maintenance Manual
Content Table Page
A Reception Control and Packaging 3
B General Description 3
B1 Model Description 3
1. Technical Data 5
2. Safety Instructions 5
2.1 Intended use 5
2.2 Operators responsibilities 5
2.3 Possible hazards 5
3. Operation Instructions 5
3.1 Placing tool in operation 5
3.2 Model AT preparing for bolting 6
3.2.1 Finishing with square drive inserts 6
3.2.2 Positioning DMA (reaction arm) 6
3.3 Support of reaction moment / Support points 7
3.4 Replacement AVS Standard Square Drive 7
3.5 Model H-AX preparing for bolting 8
3.5.1 Support of reaction moment / Support points 8
3.5.2 Positioning reaction arm DMA (optional) 9
4. Operation 10
4.1 Connecting hydraulic hoses 10
4.2 Tightening and loosening 10
4.2.1 Safety instructions 10
4.2.2 Starting procedure hydraulic power unit 11
4.2.3 General description tightening/loosening 11
5. Ending or Interrupting the Work 12
6. Functional and Operational Tests 12
6.1 Optical inspection 12
6.2 Tightness and contamination 12
6.3 Specialist inspection 12
7. Service / Storage / Maintenance 12
7.1 Lubrication 12
7.2 Storage 13
7.3 Taking out of operation 13
7.4 Maintenance intervals 13
8. Technical Notes 13
9. Appendix 13
Trouble Shooting 14
Technical Data 15
Safety instructions.
Non-compliance may result in personal injury
or death.
Safety instructions.
Non-compliance may result in damage to the
alkitronic® Hydraulic Torque Wrench, its func-
tions, or the environment.
Information for proper and safe operation.
Practical advice and information to make work
easier.
Denition of Symbols
Foreword
Congratulations on your purchase of an alkitronic®
Hydraulic Torque Wrench! This product sets the highest
international standards for quality and safety. To maintain
these standards, please read and follow the information
and instructions found in the operation and maintenance
manual.
Maintenance and repair of the alkitronic® Hydraulic Torque
Wrench must be performed by alki TECHNIK GmbH or cer-
tied workshops trained and instructed by alki TECHNIK
GmbH.
Improper maintenance may endanger you and damage
the unit. Non-compliance with any of the above items
voids all warranty claims!
The operation and maintenance manual contains all basic
information and instructions.The operator must read, un-
derstand, and observe this material together with the basic
precautions before either using or attempting to maintain
the alkitronic® Hydraulic Torque Wrench.
The manual must always be available on site.
This operation and maintenance manual applies only to
the alkitronic® Hydraulic Torque Wrench. Observe the
“Safety information” found in section 2, and all other spe-
cial instructions in other sections.

3
H-AX / H-AT hydraulic torque wrenches
A Reception Control / Packaging
Inspect all components for possible damage. If
shipping damage is found, notify the forwarding
agent immediately. Return components in the
original package to avoid additional damage.
Therefore, please keep the packaging.
B General Description
The alkitronic® Hydraulic Torque Wrench with the 2 hydraulic
hose system for tightening or loosening of heavy bolt connec-
tions. The hydraulic pressure to the Torque Wrench is being
converted to a torque via an hydraulic piston. The reaction
force can be transmitted to a suitable support point via the
insertable reaction absorber (DMA) or directly via the housing
(model alkitronic® H-AX). The torque to the hydraulic pump
is determined according to the torque chart.The individually
pivoting joint couplings (360°, vertical 180°) are convenient,
secur, and reliable.
alkitronic® H-AX 2-parts Torque Wrench:up to approx. 49.000 Nm*;
developed for applications in restricted space and dicult
to access areas; H-AX drive unit of heavy-duty material; fast
changing of the H-AX hexagon link with extremely small
housing radius; drive unit with interchangeable hexagon link
from 17 to 145 mm.
Trouble-free support without aecting the torque accuracy
by lateral force. Drive unit and hexagon link in line, extremely
at and ush design.
Recommendation: alkitronic®Hydraulic Pumps
For fast, reliable operation of the alkitronic® Hydraulic Torque
Wrench, we recommend our alkitronic® NOVA or VELOX Hy-
draulic Pumps. Operating pressure max. 700 bar, can be used
worldwide in all mains grids (100-253 V / 45-66 Hz).
Depending on the model, up to 4 hydraulic wrenches can be
operated at the same time. Low running costs, robust and
compact design, capable of continuous operation.
Without magnetic valve control, the pumps oer high dura-
bility equipment and simple automatic operation.
B 1 Model Descripton
alkitronic®H-AT Hydraulic Torque Wrench up to approx.
72.000 Nm* for threads of M 14 and larger. The one-piece,
torsion resistant, ergonomically shaped housing is made of
high density aluminium. The setting table for the wide tor-
que range ist directly on the tool. The square drive is easily
changed from tightening to loosening.
* approx. values / torque values are dependent on model
alkitronic® NOVA
Unclamping:
Push the latch down, the wrench is released. See
4.2.3 Tighten/Loosen description, last paragraph.
alkitronic® VELOX

4
Operation and Maintenance Manual
alkitronic®Accessories
Our specic selection of a wide
range of accessories, gives you
a broader work application eld.
When you need specific, indi-
vidual solutions, your alkitronic®
Partner or alki TECHNIK GmbH
will gladly advise you.
(1) Handle
(2) Link safety pins
„short“ standard version,
„long“ to use for additional
reaction arms
DMA reaction arms
(3) „extended“ version
(3) „low point“ version
alkitronic®H-AX Drive Inserts
STABI
(4) Reducer to standard hex drive
(5) Reducer to standard square drive
(7) STACO Standard socket
(8) STA Standard adaptor
alkitronic® Accessories for
H-AX Convertible Type Torque Wrench
alkitronic® Accessories for
H-AT Hydraulic Torque Wrenches (1) Carrying handle
(2) Handle
(3) DMA standard reaction arm
(4) Pipe extension
(5) Reaction sleeve
(6) Reaction arm cover ( different
sizes available upon reques )
alkitronic® H-AT Drive Pins
(7) AVS square drive pin
(8) AIS hex drive pin
2
1
3
4
5
6
7
8
2
8
7
1
65
43

5
H-AX / H-AT hydraulic torque wrenches
Before starting repairs disconnect the tool from
the hydraulic power unit. All hydraulic hoses must
be pressure-free.
Leaking oil is hazardous to the environment. Hy-
draulic oil may not enter the ground or be poured
into drains. Hydraulic uid spills must be wiped up
by suitable material immediately.
3. Operation Instructions
The alkitronic® Hydraulic Torque Wrench may only
be operated if the technical data (see torque chart)
matches the hydraulic performance specications
of the hydraulic power unit.
To avoid electric shocks, the alkitronic® Hydraulic
Torque Wrench and the hydraulic power unit must
be grounded.
Working pressure for alkitronic® Hydraulic Torque
Wrenches and single components may not exceed
700 bar.
Comply with resilience specications for adapters
and attachments to avoid damage to property or
personal injury.
3.1 Placing tool in operation
Control and safety inspection
• The drive inserts/adaptors and reaction arms (DMA)must
be correctly tted and undamaged. Never use damaged
parts under any circumstances!
• Use original alkitronic® spare parts only!
• Adapter or socket sizes must correspond exactly to the
size of the nut or the screw.
• Couplings, nipples of the Torque Wrench and hydraulic
hoses must be connected properly.
• Local regulations for the working environment and for
the hydraulic hoses must be complied with.
Special reaction arms, drive inserts or sockets are
required for tightening and loosening bolt connec-
tions (available as an accessory).
Alterations/replacements or setting up a hydraulic
hose connection must always be carried out with-
out hydraulic pressure.
Prepare the joint before connecting or operating
the hydraulic power unit!
1. Technical Data
Operation pressure max. 10,000 psi / 700 bar
Ambient temperature -20OC to +50O C
Switch-o accuracy ± 3%
2. Safety Instructions
2.1 Intended use
alkitronic®Hydraulic Torque Wrench is designed to tighten or
loosen heavy duty bolt connections. Do not use the Torque
Wrench for any other purpose.
2.2 Operators responsibilities
The operator must have read and understood the instructions
in this operation and maintenance manual before using or
servicing the alkitronic® Hydraulic Torque Wrench. Minimum
age of the operator must be 18 years.
Operation and service may not be performed, if the concerned
person does not understand the purpose, consequences,
and precise performance of each procedure. For questions
regarding the safety measures and areas of application, your
alkitronic® Partner will be pleased to assist you.
Improper operation, incorrect application, abuse
or use by unqualied personnel may be hazardous
to other persons, the operator, the Hydraulic Power
Unit and other property.
The operator is responsible to third parties within
the work area.
For operation outdoors or in humid rooms, ob-
serve the relevant regulations. Keep children and
bystanders away while operating the tool.
Non-authorized alterations and modications of
the alkitronic® Hydraulic Torque Wrench are not
permitted.
2.3 Possible hazards
When operating under high hydraulic pressure,
any damage to a tool component may lead to fatal
injuries. Therefore in case of damage to the tool,
connections or the hydraulic hoses, stop operat-
ing the Torque Wrench. In case of damage, the
Torque Wrench must immediately be inspected by
a qualied technician for hydraulical safety and me-
chanical defects. Repairs may only be performed
by authorized personnel. All safety and mechani-
cal defects must be eliminated before resuming
operations.

6
Operation and Maintenance Manual
Always check the Torque Wrench and connections
for cleanness and free movement. Insucient lubri-
cation may signicantly aect the torque accuracy.
If necessary, clean and slightly grease the joints,
gliding surfaces, toothing etc. (see page 12, from
item 7.1 Lubrication).
(2)
alkitronic® STACO
Safety pin
Slide rubber ring over the safety pin.
3.2 Preparing for bolting
- alkitronic® H-AT
3.2.1 Finishing with square drive inserts
Example alkitronic® STACO (standard socket)
• First, prepare the Torque Wrench for the chosen rotating
direction (tightening or loosening). Place the AVS Standard
Square Drive Pin (1) in the chosen position ( replacement
of the AVS, see 3.4).The rotation direction is indicated by the
Torque Wrench housing.
Insert the AVS square drive (1) in the desired position
(see 3.4).
3.2.2 Positioning DMA (Reaction arm)
Press the safety button down (3) and remove the DMA from
the external toothing. Insert the DMA completely in the cho-
sen position into the toothing (locking device must be en-
gaged).
Safety
button (3)
Correct positioning of the alkitronic® DMA.
See page 7, from item 3.3.
DMA stepwise
manually adjustable
up to 360°
Tighten Loosen
Rotating CW
Tighten
Rotating CCW
Loosen
Reaction
moment
Fig. 1 - Rotating directions tightening/ loosening
Reaction
moment
Position square
drive (1)
• Next place the alkitronic® STACO (2) on the square drive.
Insert the safety pin and secure it with the rubber ring.
For a direction change, the square drive insert
is being changed from one side of the Torque
Wrench to the other side.

7
H-AX / H-AT hydraulic torque wrenches
3.4 Replacement of square drive or other drive inserts
An exchange will be necessary to change the rotating direc-
tion or damaged drive inserts (e.g. square drive AVS) with
other drive inserts from our accessories program.
Models H-AT: The push button (1) must be pressed to
change the drive square.
Support correct / incorrect alkitronic® H-AT
Fig. 2 - Description support positions
(1) Correct support position
(2) Reaction surface too small and out of the sup-
port area.
(3) Tilted reaction support out of the DMA sup-
port area - high hazard potential - must be strictly
avoided!
Fig. 2 - Examples: Support situations correct / incorrect
2
4
1
3
Dierent levels of the bolting joint and the proper
support area can cause dangerous tilting moments.
This situation must be strictly avoided. If it occurs,
the max. torque of the tool must be reduced. If
there are any questions concerning such a situa-
tion, please contact your alkitronic® Partner or alki
TECHNIK GmbH for instructions, prior to use. .
6
Correct torque reaction point in marked area only (7)
6
3.3 Support of reaction moment / Support points
Place DMA vertical and parallel to the axis of the bolt resp.
socket/adaptor.
Tightening
(rotation CW)
DMA
support area
The DMA of the Torque Wrench must take the
reaction moment to the same level as the socket/
adaptor (6).
Push button (1)
7
(4) Sharp-edged counter bearings may cause dam-
ages to the DMA.

8
Operation and Maintenance Manual
3.5 Preparing for bolting - alkitronic® H-AX
Assembling the alkitronic® H-AX
• Select the H-AX hexagon link (1) corresponding to the
joint. Make sure the hexagon link is suitable for the drive
unit (2). Do not use the hexagon links of any other tools.
• Push the H-AX drive unit without twisting into the hexa-
gon link up to the stop. By inserting the standard link bolt
(3) completely both parts of the tool are firmly connected
and secured.
Setting the rotation (tightening/loosening)
• The rotation is changed by reversing the alkitronic® H-AX
Torque Wrench by 1800.The bolting direction is marked at
the housing of the hexagon link.
Changing the hexagon link
• Remove the link bolt (3) and pull the drive unit out (2) from
the hexagon link.
• Assembly as described above.
alkitronic® STA (5)
Rotation CW
Tighten
Rotation CCW
Loosen
Standard-link bolt (3)
Standard-link bolt (3)
H-AX-drive unit (2)
H-AX-Drive unit (2)
H-AX-link (1)
To reduce the spanner width, an optional alkitronic®
STA (5) can be used in the hexagon link drive.
3.5.1 Support of reaction moment / Support points
A safe and stable counter mounting is essential.
Improper support may lead to damage to the tool
or injury to the operator due to high reaction forces
generating from the tool.
Place the reaction surface (1) of the H-AX hexagon link (Fig. 3)
against an adjacent nut, flange or solid system component.
Reaction
moment
Reaction
moment
After replacements, check inserts or adapters are
properly secured. Otherwise serious personal inju-
ries or damage to the tool may occur.
Procedure:
• Press the push button (1) and hold it down. Pull the square
drive (2) out of the housing. Remove the push button.
• After the exchange, put it together in the reverse order
and secure the square drive (2) with the push button (1)
again.
• Check that the push button is rmly connected to the
insert.
Push button
Push button (1)
Square drive AVS (2)
Assembly
1
2

9
H-AX / H-AT hydraulic torque wrenches
Link Bolt
long version (7)
Standard - Link Bolt
short version (3)
DMA (6) Example
„Low Point Reaction Arm“
3.5.2 Positioning the DMA - alkitronic® H-AX (option)
Depress the short standard link bolt (3) and insert the
DMA (6) correctly. Then attach the longer link bolt (7)
to secure the DMA with the H-AX drive unit and the
H-AX hexagon link.
Professional positioning of the alkitronic® DMA is
dependent on the joint.
Also see Fig. 4 - correct/incorrect support points.
Reaction support surface (1)
Support position correct/incorrect alkitronic® H-AX.
Description of supports Fig. 4:
(1) Correct support!
(2) Reaction surface too small and out of the sup-
port area.
(3) Tilted reaction support out of the support area
- high hazard potential - must be strictly avoided!
(4) Punctual loadings or sharp-edged counter
mountings may cause damages to the housing.
21
4
3DMA (5) Example
Extended Reaction Arm
Depending on the application a DMA - Extended Reaction
Arm (5) - can also be used.
Fig. 4 - Examples correct / incorrect support
Fig. 3
Dangerous tipping can be caused by the bolting
connection and Torque Wrench being at dierent
heights. For this situation, reduce the maximum
torque of the wrench. Before starting work, ask
your alkitronic® Partner or alki TECHNIK GmbH for
safe solutions.

10
Operation and Maintenance Manual
draulic hoses/couplers. Interchanging quick-lock
couplings will reverse the ow direction and the
control of the load. Non-compliance with these
regulations may lead to faulty functions and dam-
age to the tool or serious injuries to the operator.
4. Operation
4.1 Connecting hydraulic hoses
The nipple at the two-hose-system is the connection for
Advance (A). The coupling is the connection for Return (R).
Original alkitronic® hoses, couplings and hydraulic power
units are designed to guarantee a correct connection.
Do not lift or carry the alkitronic® Hydraulic Torque
Wrench by the hoses. Before start-up, clean hoses
and nipples/couplings. Check for damage and pos-
sible need for replacement. Place hydraulic hoses
flat on the ground. The hoses must not be bent,
twisted, stepped on, driven over or mechanically
damaged.
Contamination of or damage to the hydraulic sys-
tem may lead to malfunctions or operational failure.
Inspect Torque Wrench and hose assemblies for
damage and wear at regular intervals. If possible,
before each use. Inspect hose sets in unpressurised
condition. Use implements when necessary. Defec-
tive or damaged hose assemblies must be replaced
immediately. Do not attempt to repair them. Always
use new components.
To avoid hydraulic oil escaping under high pressure,
make sure all hydraulic hoses (coupling and nipple)
are properly connected and secured with the
Hydraulic Pump and the load (motor, cylinder or
Torque Wrench).
Do not make improper modifications of the hy-
Nipple = Advance(A)Coupling = Return(R)
Advance (A)
Return (R)
Connection
hydraulic
unit
(R)
(R)
(A)
(A)
(R)
(A)
• Improper tool operation or incorrect reaction support may
cause:
- strain breakage in adaptors, housing or drive
elements,
- faulty torque transmission,
- bruises or even life-threatening injuries (parts
splintering o).
• Non-compliance with any above items will void all war-
ranty claims.
4.2 Tightening and loosening
4.2.1 Safety instructions
Comply with all applicable local and safety regula-
tions when putting the tool in operation.
Inspect and test all components for damage. Do
not operate with damaged parts!
Keep clearance for the hoses, swivel and couplings.
Do not operate the alkitronic® Hydraulic Torque
Wrench unattended under any circumstances.
A rapid “switch off“ in case of emergency must
always be ensured.
Maintain a safety distance. If a bolt rotates freely,
the tool or the bolts may be ejected uncontrollably
from the threaded connection and may cause life-
threatening injuries.
Beware of free rotating drive parts. Always keep
clothing, jewellery, long hair, and cables away from
moving parts.
Do not touch the DMA, moving parts, or the hoses
during operation!
The DMA support must always be safe and stable
to ensure correct reaction support.
For individual solutions your alkitronic® Partner will
be pleased to assist you.
Always place drive inserts or adaptors (e.g. STABI,
STACO, STA) completely on bolt/nut and keep the
drive in axis line to the bolt during the bolting
process.

11
H-AX / H-AT hydraulic torque wrenches
4.2.2 Starting procedure hydraulic power unit
Procedures
- when first putting the tool into operation
- when changing Torque Wrenches at the hydraulic unit
Do not exceed the determined maximum nominal
pressure or torque of the Torque Wrench, square
drive inserts, and other spare parts you are us-
ing, when adjusting the hydraulic pressure or the
torque.
Non-observance may cause damage to property
or personal injury.
Observe the enclosed data sheets/torque tables
of the alkitronic® Hydraulic Torque Wrenches.
4.2.3 General description tightening/loosening
The following is a general operation manual. The
operation manual applies exclusively to the hydrau-
lic power unit being used. The operator must read
and understand this operation and maintenance
manual before operation or maintenance.
• Set hydraulic power unit in operation according to the
operation manual.
• Carry out pressure adjustment at the hydraulic power
unit according to torque chart of the alkitronic® Hydraulic
Torque Wrench (see example page 12 above, Fig. 4).
• Activate the torque tool a couple of times before connect-
ing to bolt/nut to ventilate hoses and the tool, if necessary.
Make sure function is faultless.
• Connect the Torque Wrench with the bolt/nut and start the
bolting process. The reaction surface (H-AX hex link) or the
reaction arm (DMA) of the Torque Wrench will move against
the support point and the bolt/nut will begin to turn.
Tightening (rotation CW )
Reactionsmoment
Tightening (rotation CW )
Reaction
moment
Danger areas:
Never place your hand or fingers between the DMA
and support point or under the housing of the H-AX
Torque Wrench. High risks of injuries.
Identication of danger points
Use High Pressure Quick releasing couplers for
quick connection of Torque Wrench to the hose and
pump. Make sure that the spring-loaded retaining
rings are fully engaged and the safety rings are
tightly threaded against the spring-loaded retain-
ing rings to prevent the connectors from disengag-
ing under pressure.
Observe the safety instructions and danger areas ,
see item 4.2.1
alkitronic® H-AT
alkitronic® H-AX
Re-positioning the Torque Wrench
to the next bolt connection may not
be possible due to the high torsional
force.
Apply pressure again (possibly 5
bar more than set). Press the release
latch down. Now the ratchet ele-
ment and the Wrench are released.
• Keep pressing the remote control button of the hydraulic
pump until the drive of the alkitronic® H-AT or H-AX stops
turning. The pre-set pressure is reached.
• Then press the button on the remote control once or twice
until the previously set pressure is reached (recommended
to ensure that the applied torque is transferred to the bolt
connection and that the TorqueWrench does not just stop
at the end stop of the hydraulic piston).
• Check the pressure gauge on the hydraulic unit to ensure
that the set pressure has been reached.

12
Operation and Maintenance Manual
6.2 Tightness and contamination
• Check all: tool, high-pressure hydraulic hoses, and all
connections for integrity and possible replacement or
cleaning.
• Contamination in the hydraulic system will cause malfunc-
tions and operating failure.
• Check hydraulic components for tightness. Defective
components must be replaced professionally.
6.3 Specialist inspection
• The alkitronic® Hydraulic Torque Wrench is an extremely
powerful and robust tool. Nevertheless to ensure perfor-
mance for years regular maintenance of the alkitronic®
Hydraulic Torque Wrenches is necessary. Maintenance
must be performed by authorized personnel according
to legal regulations.
• For safety reasons all hydraulic hoses used in regular re-
quirements must be replaced at the latest after ve years
(additionally max. two years storage). After increased re-
quirements (multiple shifts, short cycle times, hand tools)
replace the hoses after two years.
In cases of performance loss, loud gear noises or
recognizable heavy damage repair immediately. For
repairs, the alkitronic® Hydraulic Torque Wrench (in
its original package) must be sent to the appropri-
ate alkitronic® Partner or directly to alki TECHNIK
GmbH.
7. Service / Storage / Maintenance
alki TECHNIK GmbH provides usable spare parts sets for main-
tenance or replacement by authorized personnel. Parts lists
with sectional tool drawings are also available. Please contact
your alkitronic® Partner.
7.1 Lubrication
Keep all movable parts, sliding surfaces, bearing
surfaces, multi-axis swivels etc. clean and lubricated
to avoid shortening the life of the tool. Dirt or cor-
rosion affect tool performance adversely.
See page 13, Lubrication points Fig. 5.
Recommended lubrication:
Liqui Moly Marine (Liqui Moly Boots Grease)
Maintenance periods:
Upon continuous operation every 20 hours.
Improper lubrication may undermine torque
accuracy.
5. Ending or Interrupting the Work
(Also with accessories change)
• Break off tool pressure by turning off the hydraulic power
unit to avoid unintended operation.
• Do not lift or carry the alkitronic® Hydraulic Torque Wrench
by the hoses.
• Remove quick-lock couplings at the hydraulic power unit,
when finishing operation.
Within a hydraulic bolting system the tool as well as
the hydraulic cords are highly pressurized.
Only remove pressure-free hydraulic hoses to avoid
personal injury or damage to the tool. Always in-
terrupt air pressure supply at the hydraulic power
unit first.
Leaking oil is hazardous to the environment. Possi-
bly leaking oil must be safely collected and properly
disposed of.
Keep all movable parts, bearings, oil connections
etc. clean and lubricated.
6. Functional and Operational Tests
6.1 Optical inspection
Check all connections (nipples/couplings) for proper condi-
tion.
alkitronic® Torque Table (sample alkitronic® H-AT 5)
Fig. 4
alkitronic® H-AT
Shroud with torque
table

13
H-AX / H-AT hydraulic torque wrenches
7.2 Storage
Always store the dry, clean a lkitronic®
Hydraulic
Torque Wrench in its transportation case or in any
lockable box. Moisture leads to oxidation on both
housing and interior parts. As a result malfunction
and further damages may occur.
For storage, make sure the hydraulic hoses are disconnected
and that the ends of the hose lines and the connecting compo-
nents (couplings/nipples) are plugged with protecting caps.
• Storethehydraulichosesinacool,dry,anddust-freeloca-
tion.
•AvoiddirectsolarandUVradiation,ozonegenerat-
ing lighting (i.e. fluorescent sources of light, mercury
vapor lamps), and storage temperatures below -10°C.
7.3 Taking out of operation
If the a lkitronic®
Hydraulic Torque Wrench
is stored
for a long time, store the cleaned tool in a closeable
and dry room, out of the reach of children. Moving
tool parts are to be protected against oxidation.
Additionally note item 7.2, Storage.
7.4 Maintenance intervals
The Torque Wrench must be submitted at least
once a year for inspection. After high strain/loads/
hours of operation, wear or leakage, calibration and
servicing must be carried out after shorter periods.
Lubrication - also see page 12, item 7.1.
8. Technical Notes
To avoid faulty bolted joints or motor damage, observe the
following:
• Oil temperature must not exceed 65°C.
• Regularly check oil level and oil condition on pump reservoir.
• Regularly check the accuracy of the gauge with a testing
manometer.
9. Appendix
- Trouble Shooting, page 14
- Technical Data, page 15
- Torque Chart (Attachment)
Lubrication points (Fig. 5)
(without dismounting Torque
Wrench). First clean and dry the
components.
7
6
6
H-AX Hex Link
(1) Apply grease onto both outer surfaces of drive plate,
(2) both front surfaces and
(3) both-sided slotted holes as well as drive pin.
H-AX Drive
(4) Apply grease onto outer surfaces of piston rod front part
(5) and slide surfaces of slider
H-AT
Torque Wrench
(6) Preparation:
remove shroud screws and shroud,
(7) apply grease onto both inner surfaces of housing.
45
1
2
3
Materials and specications are subject to change without notice.
©alkitechnik / GBA AT-H-AX /2/28-06-22-4Pdesign

14
Operation and Maintenance Manual
Trouble Shooting
Problem Probable Cause Solution
Tool does not rotate 1. Connections are not attached
properly
2. Damaged joint couplings
3. Damaged hose connection
4. Inspect the hydraulic power unit for
contamination or foreign particlest
5. H-AT drive latch or ratchet teeth hea-
vily contaminated
6. Damaged H-AT ratchet or drive latch
1. Coupling/nipple must be engaged
completely
2. Replace joint couplings
3. Replace hose couplings
4. Clean or remove hydraulic power
unit
5. Clean or remove
6. Replace
Tool will not build pressure 1. Cylinder does not retract
2. Motor coupling of hydraulic pump is
damaged
3. Defective cylinder sealing
4. Defective sealing at the hose cou-
pling unit
1. Check connections
2. Replace couplings
3. Replace sealings
4. Replace sealings
Tool is leaking oil 1. Damaged O-seals
2. Defective joint couplings
1. Replace sealings
2. Replace joint couplings
Tool is rotating; piston must have been
retracted
1. Connections improperly installed 1. Make sure, advance or return coup-
lings are installed correctly (Page 10,
Item 4.1)
Tool is rotating, while piston retracts 1. Defective drive plug 1. Replace drive plug
Tool does not rotate sequentially 1. Loose or defective connection
2. Damaged joint couplings
3. Operator initiated next stroke, before
oil had flown back into the tank. Piston
could not retract to starting position
4. Broken drive plug
1. Coupling/nipple must be connected
properly or replaced
2. Replace joint couplings
3. Wait until oil flows back into the tank
of the pump and the piston has reached
starting position
4. Replace
Tool pops off nut 1. Improper reaction support 1. Always react in plane with the support
DMA and the square drive inserts (see
Page 7, Item 3.3 / Page 8, Pkt. 3.5.1 - Sup-
port of reaction moment).
Consult your alkitronic®Partner to see if
a custom reaction or another alkitronic®
Hydraulic Torque Wrench is better suited
for the particular application

15
H-AX / H-AT hydraulic torque wrenches
Technical Data
B1
B2
H1
R1
L1
L2
R2
Model H-AT Model H-AX
Dimensions [mm]
To reproduce the specied torque exactly, pressure of max. 700 bar is needed. Repeatability ±3%. For a fast, safe and reliable operation of the hydraulic wrenches we recommend our
alkitronic® NOVA or VELOX hydraulic pumps (700 bar pressure, can be used worldwide in all mains grids 100-253 V / 45-66 Hz).
*) When loosening a bolted connection, up to 20% higher torque may be required (loosening torque). We will gladly advise you in detail.
Type H-AX 2- A/F SW 27 SW 30 SW 32 SW 36 SW 41 SW 46 SW 50 SW 55
Radius (approx.) Rmm26 28 28 31 33 36 39 42
Type H-AX 1- A/F SW 14 SW 19 SW 22 SW 24 SW 27 SW 30 SW 32
Radius (approx.) Rmm19 19 23 23 23 25 25
Type H-AX 4- A/F SW 36 SW 41 SW 46 SW 50 SW 55 SW 60 SW 65 SW 70
Radius (approx.) Rmm34 34 37 41 44 46 49 52
Type H-AX 16- A/F SW 80 SW 85 SW 90 SW 95 SW 100 SW 105 SW 110 SW 115
Radius (approx.) Rmm63 67 69 75 75 78 87 87
Type H-AX 8- A/F SW 55 SW 60 SW 65 SW 70 SW 75 SW 80 SW 85 SW 90 SW 95
Radius (approx.) Rmm46 49 52 55 58 60 65 67 79
Type H-AX 32- A/F SW 95 SW 100 SW 105 SW 110 SW 115 SW 120 SW 125 SW 130 SW 135 SW 140 SW 145
Radius (approx.) Rmm82 82 88 94 94 100 100 100 104 109 109
Type H-AX 1 H-AX 2 H-AX 4 H-AX 8 H-AX 16 H-AX 32 ***
Torque range (approx.) * Nm 60-770 260-2600 540-5400 1150-11900 2150-22900 4450-49000
ft.lbs 45-560 192-1928 395-3950 830-8630 1560-16600 3220-35650
Hexagon ** SW mm 14-32 27-55 36-70 55-95 80-115 95-145
Width Bmm 24 38 47 58 70 92
Length L mm 111 167 203 253 330 390
Height H mm 83 103 144 180 194 278
Weight kg 0.5 1.6 3.5 6.6 13 18
Models alkitronic® H-AX
Models alkitronic® H-AT
Models alkitronic® H-AX Link
Ask us about: **) other A/F sizes ***) models with larger torque range
Type H-AT 1 H-AT 2 H-AT 3 H-AT 5 H-AT 8 H-AT 10 H-AT 20 H-AT 25 H-AT 35 H-AT 50
Torque range (approx.) Nm 110-1120 180-1840 450-4510 750-7530 1080-10780 1550-15520 2660-26660 3470-34730 4860-48600 7200-72000
ft.lbs 80-826 133-1357 332-3326 553-5554 797-7951 1143-11447 1962-19663 2559-25615 3585-35845 5310-53100
Square drive size 3/4” 3/4” 1“ 1 1/2“ 1 1/2“ 1 1/2“ 2 1/2“ 2 1/2“ 2 1/2“ 2 1/2“
Height H2 mm 108.1 131 176.5 199 217 232 270 297 332 341
Length L1 mm 110.8 144.5 178 210.5 222 245.5 307.5 323 372.5 400
Length L2 mm 139.3 173 229 270.5 293 317.5 383.5 401 496.5 516
Radius Rmm 20.5 26 34 39 47 51 59 66 77 81
Radius R2 mm 68.3 85 114 137 153 154 186 199 214 259
Width B1 mm 42 50 68 80 90 100 120 137 153 160
Width B2 mm 54 66.5 89.5 100 120 128 153 159.5 167 178
Weight (approx.) kg mm 1.8 2.5 5 8 11 15 26.5 35 50 87

16
alki TECHNIK GmbH
Development, Production and Distribution of Bolting Systems
Unterlettenweg 4 – 85051 Ingolstadt/Germany – fon [phone] – fax [phone]
[e-mail] – www.alkitronic.com
Increased quality
Premium production
Highest quality materials
Long product life cycles
Experience in bolting technology since 1984
Made in Germany – international patents
Increased productivity
Quicker tightening without reworking
No environmentally caused failures (IP54, ATEX)
High work safety
Easy to use: clear, simple instructions
Low maintenance and cost ecient
Increased precision
Precise, customer-specic torques
High repeatability
Reliability in permanent operation
Documentation of tightening results
Automatic shut-off
Better service
Technical advice on site
Training offers
Manufacturer’s calibration and certication
Lifecycle support
Spare part and repair service
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