Hazet 4793/3 Manual de Usario

Hazet No categorizado 4793/3

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h 4793/3
Cylinder Head Tightness Tester (CO2 leak detector)
Dear Customer,
You have made a good choice. With a HAZET Cylinder Head Tightness Tester, you
have a quality tool in your hands.
First, some general information: –
Testing can be carried out at any time, whether the engine is hot or cold. As a rule,
no preparation of the vehicle for a routine test is required. Nevertheless, if the
engine has cooled over a prolonged period of time, fresh air will have been drawn
into the cooling system, diluting any combustion gas which may be present in the
air cushion.
The HAZET CO2 Leakage Tester permits the early, rapid and reliable detection of
leaks between the cooling system and the combustion chambers of all coolant
cooled petrol, diesel and LPG engines.
Any combustion gas which leaks into the cooling system through a defect in the
cylinder head gasket, sealing faces, hairline cracks, cylinder liners or even porous
parts of the cylinder head, collects in the air cushion in the radiator or header tank.
The HAZET Leakage Tester enables the air cushion to be tested for combustion gas
(increased CO2 content). Leaks can also be detected subsequently.
The blue detecting fluid indicates whether the in-drawn air contains an increased
level of carbon dioxide by , first to , then tochanging colour from blue green
yellow. An increased CO2 content in the cooling system indicates a leak between
the combustion chamber and the cooling system, i.e. the presence of combustion
gas in the cooling system.
The proven prevents erroneous diagnoses, as"HAZET dual chamber system"
follows. In the lower chamber, alkaline particles are absorbed while, in the upper, a
leak resulting in an increased content of CO2 gas (combustion gas) will give rise
to a change in the colour of the fluid from blue to yellow.
Suggested uses:
As a routine test at every service and before replenishing antifreeze. To check repairs, e.g. after
pronounced overheating of the engine as a result of a leak or defect in the water pump, V-belt,
radiator hose, etc. In combination with a pressure test for externally escaping leaks (max. possible
test pressure, 1 bar); this also reveals leaks which would otherwise only occur at a very high
combustion pressure or when the vehicle is being driven.
Preparation of the Tester, filling and initiation
There are two chambers in the HAZET metal box:
– blue fluid – Reaction fluid HAZET 4793-2
– light blue fluid – Flushing fluid HAZET 4793-3
Remove the two chambers from the Tester by pulling and turning. Pour the blue reaction fluid into
the lower chamber up to the marking line (12 mm). Put the upper chamber on the lower one and
fill it up with the blue reaction fluid up to the line as well. Now put on the upper part with the
suction ball. The Tester is now ready for use.
lower
chamber
upper
chamber
upper part
h
HIGHEST TECHNOLOGY IN TOOL MANUFACTURE SINCE 1868
Technical data are subject to change
Sensitivity Check
Squeeze the suction ball 2 or 3 times, hold the Tester at your mouth and exhale several times.
Stop breathing once you notice that the reaction fluid turns green. The carbon dioxide in the
breathing air ought to give the fluid in both chambers a yellow colouration within a few seconds.
Regeneration
By squeezing the suction ball again, fresh air will be sucked into the Tester. The Tester will again
be ready for use as soon as the reaction fluid has taken a green colour.
This test should be repeated every time before usage and before refilling the chambers. The fluid
must be renewed if a reduction in sensivity can be noticed.
After usage, the Tester has to be stored in horizontal position.
Directions for use
1.) With the engine at operating temperature, open the lid of the radiator and insert the Tester
into the radiator inlet.
2.) The rubber plug should avoid an escape of trapped gas. It should not sit tight to prevent
vacuum.
Avoid the intake of cooling water: Do not dip the rubber plug into the cooling liquid. Put
the Tester on the slant if neccessary.
3.) Squeezing the suction ball up to five times will be enough to show the presence of
combustion gas in the air cushion on top of the cooling water level. Any discolouration
from bluish green to yellow indicates the presence of combustion air in the air cushion. –
Even a yellowish-green colour indicates a content of carbon dioxide.
4.) If no discolouration of the reaction fluid in the upper chamber can be noticed or if the fluid
turns blue: There is no leakage between the combustion and cooling systems.
Note
Only the discolouration in the upper chamber is significant: A bluish discolouration of the fluid in
the lower chamber indicates a saturation of the fluid with alkaline particles. The fluid therefore has
to be renewed before the next leakage test (see sensivity check and regeneration).
In case of doubt the test can be repeated, the testing condition being improved as follows:
A.) Check the cooling water level and refill it if neccessary so that the air cushion diminishes.
B.) Make a test ride with your car, accelerating several times (very important for diesel
enginges).
C.) Repeat the test after a short cool down (in order to prevent the super pressure in the cooling
system).
Notes on environmental protection
The fluid is ecologically harmless, acid-free and non-inflammable. The fluid can be disposed
without taking any precautions. When spilled on clothes rinse immediately with water in order to
prevent stains.
Prevent pollution of the tester through cooling water. In case of pollution rinse the chambers with
fresh tap water only. Do not use detergents such as soap or powder.
4793/3 engl. 08.2001

Especificaciones del producto

Marca: Hazet
Categoría: No categorizado
Modelo: 4793/3

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