Examination
1. The performance of the vacuum pump of the brake system can be checked using a vacuum gauge.
2. Disconnect the vacuum tube from the pump and connect a vacuum gauge instead.
3. Start 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 meet the required data, replace the entire pump, as spare parts are not available for the pump.
Removing
1. Remove the radiator fan.
2. Remove the auxiliary drive belt.
3. Unscrew the connecting nut and disconnect the vacuum hose from the vacuum pump.
4. Unscrew bolts and remove the vacuum pump from a forward part of the block of cylinders. Remove the vacuum pump gasket. When installing the vacuum pump, a new gasket must be used.
Installation
1. Installation is made in sequence, return to removal. Install a new vacuum pump gasket and check that the vacuum pump drive flange is properly seated.