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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| 300GD viscous clutch removal
the forum's search function is not working - so I have to ask here
how do you remove the viscous fan clutch from the water pump on a 300GD?
It's now 30 years that I had mine and I forgot how to do it
special tool?
left thread"
pin in housing? |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| RE: 300GD viscous clutch removal
The Search function is working. Do an Advanced Search and be sure to click the Search All Posts option. |
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| RE: 300GD viscous clutch removal
does not work here Dutch - tried 2 different browsers
I get no results page after clicking search |
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| Re: 300GD viscous clutch removal
now it works |
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| Re: 300GD viscous clutch removal
could not find any good answers though
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Boy G
Expert
Date registered: Feb 2007
Location: Bushveld, South Africa
Vehicle(s): Diesel G's: 617A and 602
Posts: 1683
| Re: 300GD viscous clutch removal
Harald, on mine there are 4 little bolts arranged concentric to the shaft, heads facing backwards, ie towards the engine. IIRC they are M8 but need a 10mm spanner. A bit fiddly and you need to turn the engine to get at them all.
And I might be confused - its late down here - but there might be one variant that has the allen cap screw through the centre. If so it needs a shortened 10 mm wrench, and the head is on the front or radiator side. Wear gloves as the rad makes you bleed.
Whichever one you have, remove the top rad hose and the two top mountings such that you can pull the top of the rad forward for a little more space.
Edited by Boy G 7/7/2017 4:05 PM
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Inkblotz
Expert
Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
| Re: 300GD viscous clutch removal
Harald yours may be the old style pump. Here is a descriptor from Kerry:
You will find a vertical hole in the water pump, and a corresponding hole in the pump shaft.
insert a piece off about 8mm round steel into this to lock it up. do not use an allen key they will break.
then using a 70mm spanner on the 2 flats on the pulley,undo anticlockwise same as normal.
the viscous hub attatches to the pump with a central bolt ,
hope this helps
cheers kerry |
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kerry460
Elite Veteran
Date registered: Apr 2006
Location: tasmania australia
Vehicle(s): 1984 300GD LWB WAGEN
Posts: 611
| RE: 300GD viscous clutch removal
thanks for posting my old comment .
you can plasma cut a spanner . or weld one up from flat plate / flat bar .
lately i have been seeing some adjustables that open very wide ..
best to give the centre bolt a nice soaking of 50/50 acetone atf
kerry |
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DesertStar
Expert
Date registered: Apr 2006
Location: San Diego, CA USA
Vehicle(s): 85-280GE/95-G320/08-G500
Posts: 2156
| RE: 300GD viscous clutch removal
Its been awhile here too on my M110/280GE...not sure if configured same, but it was just 4 screws between fan and pulley. Here are some photos which may help you remember ? Also...this writeup from Hans Hehl website will help as it has more photos : http://www.hanshehl.de/tipp98-5.htm#b1-5 Hopefully you can manage as it is written in German. 
Edited by DesertStar 7/10/2017 3:38 AM
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| RE: 300GD viscous clutch removal
thanks guys - it is the version with the pinhole in the water pump and a giant spanner
got it apart
thanks! |
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