Kamasa-TOOLS K 21270 User manual

K 21270Air hydraulic
trolley jack

2
INSTRUCTIONS FOR USE
IMPORTANT
Read these instructions carefully and store this manual in a place where
you can easily find it as you may need to use it again. This jack has been
designed to elevate heavier cars and trucks. Any other use beyond the
conditions established for use of this jack, are considered to be inappropri-
ate. Please handle the jack correctly and ensure that it is in good condition
prior to use and that no parts are missing. Only authorized persons that
have read and understood these instructions should operate the jack. Do
not modify the jack in any way. Non-compliance with these instructions
may result in injury or damage to the user, the jack or the vehicle to be
lifted. The manufacturer accepts no responsibility for improper use of the
jack.
SAFETY INSTRUCTIONS
1 The vehicle to be lifted shall never exceed the rated capacity of the jack.
2 The maximum stroke of the jack indicated on the label shall never be
exceeded.
3 The jack should be placed on a solid, level and horizontal surface which
is well illuminated and free from obstructions. Never place the jack on a
surface which may sink.
4 Ensure that there are no persons inside the vehicle to be lifted. Switch
o the engine and apply the brake. Ensure that the vehicle to be lifted
can not slide in any direction. Do not enter the vehicle or start the
engine whilst it is supported on appropriate jack stands. The jack is a
lifting device only and should never be used to move a vehicle.
5 The air supply hose should not be worn and connections should be in
good condition. Keep the hose clean and away from heat, dirty areas or
sharp edges and do not bend it. Don’t pull the hose to remove the jack.
6 Position the jack under the manufacturers recommended lifting point
for the vehicle and ensure that it is not corroded, dirty or greasy. The
lifting point should remain centered over the jack saddle, all o-cen-
tered loads can slip and may result in accidents.
7 During raising and lowering of the load, all precautions should be
taken to avoid movement of the vehicle load. Trac may cause the
raised vehicle to rock during roadside use of the jack.

3
8 The jack should be positioned so as to avoid the need for the user to
place any part of his/ her body underneath the vehicle. Never work
under a raised vehicle without supporting it with jack stands or other
appropriate methods. Never position any part of your body near the
movable parts of the jack.
9 It is necessary for the operator to be able to observe the lifting device
and the load during all movements. In the presence of dangerous con-
ditions such as movement of the vehicle etc, the lifting process must be
discontinued.
10 The jack is a lifting device and should never be used to support or move
the vehicle. To perform any operation underneath the vehicle, first
support it using appropriate jack stands. Check that the wheels rotate
freely.
11 Use only the manufacturers extensions. Never use more than one exten-
sion at a time. Saddle C must be placed direct on the jack piston, never
on the extension (fig.9).
12 Disconnect the air supply hose from the connector located in the
handle once the operation is completed and prior to carrying out any
maintenance work.
13 As an additional safety measure against overload, the jack is fitted with
an overload valve set at the factory which should under no circumstanc-
es be adjusted. If nominal capacity of the jack is exceeded, the overload
valve will stop the lifting operation.
14 Ensure that there are no persons or obstructions underneath the vehi-
cle prior to lowering.

4
USE AND OPERATION
Prior to operate the jack, a small assembly operation is required:
1 Start by removing the upper cover, placing the jack handle in posi-
tion (4, fig.5) and secure the bolt (26) and it’s washer (27) which are
included in a kit (fig.6). Replace the cover.
2 The handle has four positions (fig. 5): Foldable for transportation and
packaging (1), out of operation (2), movement (3) and in operation (4).
Each position is achieved by disengaging the trigger lever (1,fig.7). The
purpose of the handle is to position the jack or simplify it’s movement.
Do not exert any pressure on the handle.
3 Should the jack need to be packed for transportation, remove the
screw (26) and washer (27) and move the handle to position 1 (fig.5).
4 It is essential that an air filter lubricator is installed (fig.2) which is
drained daily
5 Drain the compressor daily. Poor air quality damages essential parts for
a proper operation of the jack.
6 Prior to connecting the air supply hose to the connection on the handle
(3) it is necessary to check that the control lever (2) is in the OFF posi-
tion (Fig.7). The air hose should not have a section inferior to that of
the air connector (3). If unusually long hoses are used, the air pressure
should be increased.
7 Ensure that the same air pressure is going to be maintained during
operation. Optimum performance of this jack is obtained with a
pressure of 7–10 kg/cm2and a minimum air flow of 280 l/min.
8 A final operation to be performed prior to using the jack is the elimi-
nation of any air that may have entered the hydraulic system during
transportation.
With the air hose connected, push the control lever (2, fig7) towards
the DOWN position, holding it there for some seconds.
Move the control lever to the UP position to complete a load free
lifting cycle. Now move the lever (2) to the DOWN position to retract
the pistons and hence check that the lowering action is performed
steadily without any jerking movements. If the lowering action is
unsteady, repeat the cycle until the lowering of the pistons performed
in a steady and uniform way. This shows that the draining operation
has been successfully completed.
9 Now the jack is ready for operation.

5
1
A
OK
A
B
OK
A
not OK
A
not OK
C
B
A
C
C
Fig. 2 Fig. 4
Fig. 6
Fig. 7
1
2
3
4
26
27
2
3
1
Fig. 5
Fig. 8
Fig. 9

6
LIFTING
1 Position the jack under the lifting point of the vehicle and following
the safety instructions described, the lifting operation is performed
by moving the lever control (2, fig.7) to the UP position and holding it
there until the vehicle has been lifted to the desired height. Immedi-
ately place the jack stands or another appropriate support method to
support the vehicle.
LOWERING
2 Check that here are no obstacles or people underneath the vehicle.
Once the operation is completed, remove the jack stands by lifting the
vehicle slightly in order to simplify their removal. Lowering is performed
by moving the handle (2, fig.7) to the DOWN position and maintaining
it until the operation is completed. To avoid sudden lowering opera-
tions, the jack is fitted with a system which automatically regulates and
controls the lowering operation (L.C.S.)
3 Proceed to retract the pistons by pushing and holding the handle
(2, fig.7) in the DOWN position until they are fully retracted.
4 If the jack is not going to be in use, close the air supply and disconnect
the air hose.
5 After each use, check the components of the jack. If any anomaly is
detected, rectify it.
Fig. 7 2
3
1

7
MAINTENANCE
Important: Both the maintenance and the repair of the jack should only
be performed by qualified and authorized personnel.
1 Before performing any maintenance operation, disconnect the air
supply hose from the connection on the handle (3, fig.7).
2 Clean and lubricate the moving parts of the jack at regular intervals
and insert a small amount of lubricant in the air inlet connection.
The whole jack should be kept clean and protected from aggressive
conditions at all times.
3 Oil level. The pistons should be fully retracted prior to proceeding to
check or refill the oil level. The oil level is correct when it is between the
two marks on the stick on the oil filler hole screw (A). Refill as requested
or if oil tank is emptied, fill one liter.
4 If all oil needs to be replaced, position the jack between two supports
so that the connecting tube (1, fig4) can be removed so that the oil can
flow out and be collected in a container which will be handed over
to an authorized agent. It is also possible to remove the oil using a
pneumatic oil extractor.
5 Important. An axcess of oil may aect the operation of the jack.
6 Only use hydraulic oil HL or HM type with an ISO grade of cinematic
viscosity of 20cSt at 40°C or of an Engler viscosity of 2 at 50°C.
7 Extremely important: Never use brake fluid. Always use original parts.
The use of non original components may damage the jack and will
invalidate the guarantee.
8 Whenever the jack is not in use, the lifting pistons should be fully
retracted to reduce the risk of corrosion.
1
Fig. 4

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Pos. Part No. Description
1 K 21279 Wheel
2 K 21275 Cylinder
3 K 21276 Release valve
4 K 21277 Valve housing
5 K 21278 Pneumatic motor
SPARE PARTS LIST K 21270
GREEN
BLUE
RED BLACK
3
5
4
1
1
2
Oil filler hole (A)

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10

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K 21270
Kamasa Tools is a registered trademark of KG Knutsson AB, 191 81 Sollentuna, Sweden
CE declaration for this product is available as a file on www.kamasatools.com