Examination
1. The performance of the brake system vacuum pump can be checked using a vacuum gauge.
2. Disconnect the vacuum tube from the pump and connect a vacuum gauge in its place.
3. Run the engine at idle speed. Measure the vacuum created by the pump. After one minute of engine operation, the vacuum should be about 500 mm Hg. If the vacuum created by the pump does not correspond to the required data, replace the pump completely, since spare parts are not supplied for the pump.
Removal
1. Remove the radiator fan.
2. Remove the auxiliary drive belt.
3. Unscrew the union nut and disconnect the vacuum hose from the vacuum pump.
4. Remove the bolts and the vacuum pump from the front of the cylinder block. Remove the vacuum pump gasket. A new gasket must be used when installing the vacuum pump.
Installation
1. Installation is performed in the reverse order of removal. Install a new vacuum pump gasket and check the correct installation of the vacuum pump drive flange.