Connection Procedure - CLAS AC 1007 Mode D'emploi

AC 1007
WATER PUMP FLOW TESTER
INSTRUCTIONS FOR USE
• Engine must be cold
• Thermostat fi tted and closed
• Coolant level correct with no air locks
• Pay attention to safety care points listed.

CONNECTION PROCEDURE

The connection procedure will vary according to the type of cooling
system fi tted to the vehicle:
• For vehicles fi tted with a pressurised expansion tank where there is
an auxiliary pipe fi tted that connects directly between the expansion
tank and engine side of the thermostat (Fig. A). All that is required is to
disconnect this pipe from the expansion tank and connect the gauge to
the pipe. Blocking off the open expansion tank can reduce spillage but
is not required for the test.
• Some vehicles that are fi tted with a pressurised expansion tank have
the auxiliary pipe on the radiator side of the thermostat (Fig. B); the
gauge connection needs to be made via a pipe that has direct access to
the engine block. ln rnost cases this would be via the heater pipe that
feeds the HVAC heater matrix from the engine.
• For vehicles that are not fi tted with a pressurised expansion tank
(Fig. C), the gauge connection needs to be made via a pipe that has
direct access to the engine black. ln most cases this would be via the
heater pipe that feeds the HVAC I heater matrix from the engine.
1 Heating, Ventilation and Air-Conditioning (HVAC)
2
3
4
5
6
7
8
9 Recommended gauge connection
10
Heater hose
Engine
Bottom radiator hose
Top radiator hose
Expansion tank
Thermostat housing
Radiator
Radiator cap