Contents: Replacement ⬇ Examination ⬇
Replacement
The vacuum pump creates the vacuum required for the brake booster to operate. The pump is mounted on the generator and is driven by its shaft.
1. Loosen the V-belt and remove it (see Chapter Vehicle settings and routine maintenance).
2. Disconnect the vacuum hose.
Vacuum pump hoses
3. Disconnect the oil supply hose. Loosen the clamp and disconnect the oil return hose.
4. Loosen the vacuum pump mounting screws and remove the pump with the sealing ring.
Vacuum pump mounting screws
5. Check the condition of the vacuum pump sealing ring and replace it if necessary.
6. Installation is carried out in the reverse order of disassembly of the components. Tighten the fasteners to the required force. Use a new oil supply hose seal.
Examination
1. The check is carried out using a vacuum gauge.
2. Disconnect the vacuum tube from the pump and connect the vacuum gauge using a suitable piece of hose.
3. Start the engine and let it idle, measure the depth of the vacuum created by the pump - after about one minute the device should register a reading of about 500 mm Hg. A significantly lower result indicates that the pump is out of order - consult with car service specialists. A faulty pump cannot be repaired and is replaced as an assembly.
(Text copied from this portal: «OPELBOOK.ru»)
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