Remove the 3 screws on the pump housing.Repair of the W140 vacuum pump with a burned-out  motor consists in replacing the electric motor.
1.To do this, you need to disassemble the PSE vacuum compressor, unscrew the 3 screws on the housing (TORX T10). Next, open the latches of the housing along the perimeter . Carefully remove the electric board and motor from the case.
To check the operability of the vacuum pump motor, you need to unsolder one or all of the wires from it and apply 12V voltage to it.

2.To remove the graphite pump casing from the JOHNSON motor, you need to unscrew 3 screws, remove the top cover of the pump, the pump stator ring, remove the graphite plates from the pump rotor.Separate the bottom of the graphite pump from the base of the housing here.

3.To remove the rotor lock, it is necessary to carefully separate the lower part of the graphite pump from the metal base of the casing with two small slotted screwdrivers. Perhaps these parts will be glued together with a sealant, then you will need to separate them with a clerical knife. After that, carefully remove the lower graphite part of the body from the motor shaft together with the rotor and the retainer.

We change the engine observing the polarity; on the engine, the plus is indicated by a red mark. And we collect everything in reverse order.



ATTENTION!
After replacing the motor, check the tightness of the vacuum system (swap tubes for seats, doors, head restraints, sunroof, boot, etc.).
Check impeller for wedging.
Moisture is not allowed in the graphite pump.
The interval between opening and closing the motor should be at least 1 minute. Do not start and close the motor continuously, otherwise the motor will burn.

P ackage include :
Door Lock Pump Motor *1

Part Number:
1408002948, 0132006350, 0132006357,
0132006367, 0132006399, 1397220145, 1 397 220 145;
1408000448, 1408000648, 1408001048, 1408001148,
1408001948, 1408002048, 1408002148, 1408002248,
1408002348, 1408002448, 1408002548, 1408002848,
1408003048, 1408003148, 1408003248, 0132006323,
0132006324, 0132006325, 0132006342, 0132006355

Compatible Vehicles:
Mercedes Benz W140 S320 S420 S500 S600 E320
replacing the motor in a vacuum pump Mercedes W140

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