It is equipped with accessories enabling use in almost any engine or system.
Purpose / Application
The pump can be used to perform diagnostics, among others.
- barometric pressure sensor (BARO)
- PCV system
- exhaust gas recirculation (EGR)
- thick-film pressure sensors (MAP)
- vacuum ignition advance
- retard valve: SDV, RCV
- conventional brakes
- ABS brakes
- air brakes
- brake lines
- brake servo
- air conditioning
- cruise control
- fuel tank and fuel system
- vacuum door closing system
How to use
Diagnostics of the exhaust gas recirculation (EGR) system
The EGR system valve is an example of a valve activated by vacuum.
If there is no vacuum, the valve is closed and exhaust gases do not escape from the valve.
If vacuum is applied to the valve, it opens, allowing exhaust gas recirculation.
Diagnostics of Thick Film Pressure (MAP) Sensors
• Assemble the pump and reservoir system as for bleeding brake calipers, and then connect to the sensor's vacuum port.
• Press the pump lever until the pointer shows -0.5 bar. Stop pumping and observe the pointer; it should be stationary. If the pointer moves, it indicates a faulty MAP sensor.
• During operation, the MAP sensor sends feedback signals to the control computer.
The signal has a frequency between 85 Hz and 160 Hz depending on the vacuum level.
A frequency meter is required to measure the frequency; it should be connected according to the sensor and meter instructions.
Bleeding Brake Calipers.
• Make sure that the brake system reservoir is filled with fluid to its nominal capacity.
• Bleed the brakes in the following order:
- brake master cylinder, if equipped with a bleed valve
- brake calipers in order from closest to the master cylinder to furthest
• Connect the short flexible hose to the connector located on the underside of the master cylinder reservoir cover.
• Close the master cylinder reservoir with the cover.
• Connect the long flexible hoses to the cover connectors. Connect one end of one of the long hoses to the master cylinder and the other to the bleed valve (nipple) of the brake caliper. Use an adapter if necessary.
• Press the pump lever 10 - 15 times to create a vacuum in the master cylinder reservoir.
• Open the bleed valve 1/4 - 1/2 turn so that the master cylinder reservoir fills with fluid to a height of approximately 5 cm. Tighten the bleed valve.
• Disconnect the pump hose from the bleed valve, the caliper bleed procedure is complete.
• Before repeating the bleed procedure on the next caliper, empty the pump reservoir of brake fluid and top up the brake fluid level in the braking system to the nominal level.
Index number YT-0673
Gross weight (kg) 1.4500
Master Carton MC 10
Pressure [MPa] 0-0.2; 0-0.41
Number of elements [pcs] 16
Measurement range: from -1 to 0 bar.