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torbenhojriisjensen

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  1. The brake warning light works as follows: 1. When the ignition is turned on the light should be ON because the vacuum switch is on since there is no vacuum before the engine is turned on. 2. When the engine is started the light should go Off because the vacuum switch turns off when vaccum is present. 3. If the light remains ON, It could be caused by the PDWA switch. The switch is ON if the piston inside is dislocated because it has stopped a leakage in the system. Dislocation of the piston can also occur during bleeding the brake system. It is important to open the bleeder screws gently to avoid this. 4. If the light turns ON when the brake pedal is activated the travel switch has turnd ON indicating excess brake travel. This is caused by brake shoe wear and should be fixed by adjusting or replacing the brake shoes. Fault diagnosis. 1. If the light does not turn ON when the ignition is turned on, the light bulb can be tested using the dash mounted test switch. If it does not turn ON, the bulb probably needs to be replaced. 2. If the light is constantly ON it can be caused by any of the switches being ON. The correct method to find the switch which is ON is to disconnect them one by one until the brake warning light goes Off. The procedure described in section 6b in the manual above where the leads are connected using a LUCAS male connector will not cause the light to go Off. On the contrary it will make it turn ON. I hope this is helpfull to understand the system. Best regards Torben
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