BGS technic 6964 Manual De Instrucciones página 12

GENERAL USAGE INSTRUCTION
Select the Correct Adapters; Bleeding & Connecting the Gauges
The pressure gauges hook up to the front and rear wheel calipers and/or wheel cylinders by removing
the bleeder valves and installing the matching adapter, then the gauge.
Procedure:
1. This vehicle listing enables you to determine which adapters are the correct ones for me make
and model vehicle you are working on. Select the correct adapters by using the attached Vehicle
Listing Look-up Table. When you have selected the correct adapters, their threads will exactly
match and interlock perfectly with the threads of me bleeder that has been removed. If the vehicle
is not listed, remove a front and rear bleeder valve and compare the bleeder valve screw threads
with the adapter threads. Match the threads of the bleeder valve with the threads on the end of
the adapter that screws into the caliper or wheel cylinder. (One end of each adapter is the same
common thread pitch to fit the gauge & hose assembly fitting.)
2. Attach the hose from the gauge assembly to the adapter just installed into the wheel cylinder or
caliper. Tighten this connection snugly.
3. Start the adapter into the caliper or wheel cylinder bleeder hole by hand and then tighten it snugly
with a wrench.
4. Bleed trapped air from the gauge and hose assembly. Hold the gauge upward and open the
bleeder valve. Have an assistant apply brake pedal pressure slowly and evenly. When brake fluid
starts flowing from the bleeder valve, close the bleeder valve and have an assistant release the
brake pedal slowly. The gauge line should now be bled. This will ensure that all the air is
removed, enabling you to obtain accurate hydraulic fluid pressure readings.
5. Air may be bled from the gauge and hose assembly by using a vacuum bleeder. Back open the
bleeder valve on the gauge hose and attach the vacuum bleeder suction end to the bleeder
valve. Hold the gauge in as vertical a position as possible with the bleeder valve pointing slightly
upward while bleeding the air from the hose.
6. Hook up the second gauge in the same manner.
The vehicle is not to be driven with the gauge installed. These tools are for static bay testing only.
Do Not press on brake pedal with more than normal braking pressure. Exceeding maximum gauge psi
pressure will damage gauges and void warranty.
TESTING BRAKES
Residual Brake Pressure
If any pressure remains on a disc brake system when other pedal is released (or if the pressure drops
slowly), mere is a problem that will cause rapid wear and/or overheating of the pads, calipers, and
rotors. Having gauges hooked up is far more accurate than having an assistant spinning me tire by
hand, because a small amount of residual pressure (drag) can easily be
overcome by the leverage of the wheel/tire assembly.
On disc brake systems, when the pedal is applied there should be pressure on me gauges. When the
pedal is released, there should not be any pressure shown on the gauge.
Air in the System - Master Cylinder Internal Cup Leaks
Don't jam or hit the brake pedal as hard as you can. To obtain an accurate reading, a rise in
pressure and operation of the master cylinder must be gradual in nature. Hitting the brake pedal as
in a panic stop is not an accurate way to perform pressure checks
If there is air in the system or a master cylinder cup is leaking, side to side pulls will easily be
detected with a pair of pressure gauges the pressure shown on the gauges, when the pedal is
depressed, will show a rapid rise one side with a low rise on the other side.
The side with the low rise may have air m the system or a leaking master cylinder cup. When
pushing on the brake pedal to apply pressure to the closed hydraulic system, you should do so
with slow easy motion of the brake pedal.
BGS technic KG
Bandwirkerstr. 3
D-42929 Wermelskirchen
Tel.: 02196 720480
Fax.: 02196 7204820
mail@bgs-technic.de
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