Replacing sealing cap for vacuum pump (S55 engine)

Special tools required:

Necessary preliminary tasks:

Release screw (1).

Lay oil lines to one side.

Installation note:

Replace O-rings.

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Removing sealing cap:

Prepare special tool 11 8 530.

Remove special tool 11 8 533 from special tool 11 8 532.

Install special tool 11 8 534.

Special tool 11 8 536 is not required.

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Attach special tool 11 8 531 to long special tool 11 8 535.

Short special tool 11 8 535 (short); a 6 mm thick M10 washer must be placed underneath between crankcase and special tool 11 8 531.

NOTE: For purposes of clarity, illustrations show alternator and power steering pump removed.

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Special tool 11 8 537 must be positioned manually on sealing cap.

Screw in special tool 11 8 534.

NOTE: The sealing cap is pressed out diagonally during this work step

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Installing sealing cap:

Prepare special tool 11 8 530.

Remove special tool 11 8 534 from special tool.

Install special tools 11 8 533 and 11 8 532.

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Screw in new sealing cap (1) with special tools 11 8 532 and 11 8 533 until flush with crankcase upper part.

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Assemble engine.