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SAFETY WARNINGS
Take care when working with systems or equipment under high pressure. Before commencing work check whether
all components of the tester are free from damage. Any damaged components, e.g. cracked, deformed or with
cavities, should be replaced before starting work.
It is forbidden to modify any element of the kit, e.g. to adapt to the tested system.
Read the technical specifi cation of the tested systems and vehicles. It is essential to get to know the parameters of
the tested pump of the power steering system.
Exercise caution when working with operating engine parts – loose elements of the clothing may be caught by
rotating engine parts.
OPERATION
Depending on the vehicle model, you can connect the kit at the steering gearbox or at the power steering pump.
With the engine stopped and completely cooled, disconnect the high-pressure power steering system hose where
it can be easily accessed. Then connect the tester between the hose and its connection point using the appropriate
adapters.
Caution! Make sure that the tester pressure gauge is located between the tester shutoff valve and the vehicle power
steering system pump.
Test No. 1
Start the engine and allow it to reach normal operating temperature. The tests are normally carried out with the
engine running at idle speed.
Make sure that the tester valve (A) is open (unscrewed) and turn the wheels to the far left or right position using the
steering wheel. In this position, the power steering system pump delivers maximum hydraulic fl uid pressure. Check
the pressure indicated by the tester pressure gauge (B) and compare it with the maximum allowable pump pressure
indicated in the vehicle technical documentation.
Caution! Do not hold the wheels turned to the extreme position for more than a few seconds to avoid ex-
cessive wear of the pump.
If the pressure indicated by the pressure gauge (B) is normal or almost normal, this means that the pump is operat-
ing correctly and the other mechanical components of the steering system should be checked.
If the pressure indicated by the pressure gauge is noticeably lower than normal, perform test No. 2.
Test No. 2
Close (screw) the tester valve (A).
Caution! If during the test the pressure indicated by the pressure gauge exceeds the maximum allowable
pressure of the power steering system, open the valve (A) to avoid excessive wear of the pump. Closing the
valve cuts off the tank and pump outlet; the pressure gauge reading will now be the maximum pressure generated
by the pump. Compare the reading with the technical documentation again and decide whether the problem lies
in the pump itself, in the hoses, or in the power steering. Do not close the valve for more than fi ve seconds to
avoid damaging the pump.
If the pressure gauge (B) shows abnormally low pressure, the pump may be damaged.
If the pressure is normal, but test No. 1 showed a pressure lower than normal, it may mean that the power steering
system needs maintenance or the power steering system hoses are adversely kinked or blocked by foreign objects.
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