Instructions Of Use - CLAS B.LINE AC 0550BL Mode D'emploi

HU 0014BL
APPLICATIONS
The use of a pressure/pressure pump is often neglected when determining the mechanical
condition and diagnosing faults in internal combustion engines. Monitoring the actual manifold
vacuum is valuable for engine troubleshooting. This can only be achieved by using a good
quality vacuum gauge and this, coupled with a manual vacuum pump, also allows static
monitoring of all types of vacuum systems.
The following pages show the applications for which our pressure/vacuum pump kit can be
used, but always remember that these are only examples and always refer to the manufacturer's
service manuals for the correct test procedures and specifi cations.
In addition to this, it is always recommended that additional tests be performed, i.e. compression
tests, cylinder leakage tests, ignition timing checks, etc., to confi rm the vacuum/pressure
gauge reading indications.

INSTRUCTIONS OF USE

1. This pump and its adapters can be used to test
vacuum motors and control valves as well as vacuum
or pressure operated systems and components
that must be properly sealed. The pump and its
associated accessories can also be used to bleed
brakes. In pressure test mode, the pump can be
used to dispense or transfer fl uids and provide light
pressure during gravity or pressure bleeding.
The pump can be used for pressure and vacuum
testing by means of the sliding sleeve selector at
the front end of the pump.
To select pressure test mode, move the sliding sleeve away from the pump nozzle end until it
contacts the main body. The hole marked "X" must be completely covered (Fig. 1).
To select the vacuum test mode, move the sliding sleeve away from the pump main body
until it contacts the O-ring just behind the nozzle. The hole marked "X" must be completely
uncovered (Fig. 1).
2. Analysis of the mechanical condition of the motor by means of manifold vacuum readings
The gauge readings (see following fi gures) are only examples of what can be observed. It
is important to remember that it is the action of the needle rather than the actual reading
that is important. Diff erent types of engines may have diff erent manifold vacuum pressures,
depending on camshaft profi le, valve overlap, valve timing, etc. The main criterion is that the
needle reading must be between 16 and 21 inches of mercury and be stable. The manifold
vacuum is also aff ected by altitude and decreases by approximately 1 in. Hg every 1000 feet
above sea level, which must also be taken into account when evaluating actual manifold
vacuum readings.
METAL TRANSFER PUMP
Mode Test
Pression
Manchon
coulissant
Mode Test
Dépression