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Mike, Technician
Category: Car
Satisfied Customers: 39198
Experience:  Tech Expert
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I need to remove viscous fan on 1992 mercedes 300e it is held

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I need to remove viscous fan on 1992 mercedes 300e it is held on by socket screw for which i have an allen key,thescrew will turn both right hand and left hand, but does not come out of thread
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Thank you,
Hello and Welcome..

My name is ***** ***** happy to help you -

The holding nut will turn either way but should undo to the right - it is a left hand thread..

You need to use something to hold the fan hub still to turn the nut - otherwise the whole thing just spins - MB have a special tool to hold the hub - you can get such tools from car tool shops etc..

Again - it will turn both ways but not when its properly undoing / tightening.

Im very pleased to have helped you -let me know if you need anything more -

** ** >>Meantime -- - - >> Please do click on the "OK/ Excellent ratings" for me - Thank you in advance for that...

You can and are most welcome to get back to me anytime you might need - clicking the OK ratings does not close you out at all..

Kind Rgds, MIKE.

Mike, Technician
Category: Car
Satisfied Customers: 39198
Experience: Tech Expert
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Customer: replied 3 years ago.

Hi Mike. viscous unit retained with allen bolt for which i have key , i can turn bolt clockwise but the bush also turns with pulley locked,

Could you please tell me what the small valve or what could be a rechargeing unit is on face of viscous unit when sprung clip is removed ,it has a small plunger sticking out which is spring loaded, could you give me a call on 01443 405698 0r *********** mant thanks for your help in this problem John