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Andrew Rolland 
Moderator Group
Go away rain
Joined: 19-August-2004
Location: Scotland
Status: Offline
Points: 6579
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 Posted: 08-January-2006 at 11:52 |
Well I tried yesterday for nearly 2 hours trying to 'tap off' the viscous coupling. Gave up in the end  so I didn't get my new thermostat, cover and water pump in place but I did manage to renew about half the coolant.
I tried to lock the pulley with a screwdriver between the pulley bolts but I used a thin diameter one so it wouldn't foul the spanner on the hub and it bent then snapped in two!
Sleeper, how exactly did you lock the pulley hub?
My dad suggested looking for a different tool to take the nut off, I'll have a look for that sink spanner from B&Q. I presume you ground it down in terms of width?
I'll have a hunt on the old t'interweb for specialist tools.
Andrew
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sleeper
Really Senior Member II
Original and STILL best
Joined: 26-March-2004
Location: East Sussex/Kent border
Status: Offline
Points: 2098
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Posted: 06-January-2006 at 11:25 |
tips, err the one I've just done wouldn't knock off with t'hammer either  so I locked the pulley with a big flat-blade screwdriver and tapped it off.
...and yes, I am an octopus! (it is possible)
BTW - I use a ground-down sink spanner from B&Q - big cast alloy fella, and it works a treat!
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Andrew Rolland
Moderator Group
Go away rain
Joined: 19-August-2004
Location: Scotland
Status: Offline
Points: 6579
|
Posted: 06-January-2006 at 11:20 |
Just had a look at the car while out feeding the greedy parking meter that greed Glasgow City Council have installed out side my office and sure enough the water pump pulley hub bolts are located on a rectangular pattern.
You learn summat new every day!
Andrew
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Be exclusive and drive a Petrol 5 Series!
Current
'13 62 F10 535i MSport Auto
Previous
'04 04 E60 545i SE Auto
'03 53 E60 545i SE Auto (Stolen)
'98 S E39 523i SE Auto
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Andrew Rolland
Moderator Group
Go away rain
Joined: 19-August-2004
Location: Scotland
Status: Offline
Points: 6579
|
Posted: 06-January-2006 at 09:08 |
 sleeper wrote:
no sweat - I did one last weekend and went through the same thing!!
Cheers!
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Any other special tips as to how to get the viscous fan off i.e how to stop the hub from turning, apart from hit the spanner with a hammer to try and shock it off? Which is what you told me last time I asked.
The reason I was checking about the bolt centres is that I was thinking of making a tool up from flat bar to hold the pulley still while heaving on the hub nut.
Andrew
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Be exclusive and drive a Petrol 5 Series!
Current
'13 62 F10 535i MSport Auto
Previous
'04 04 E60 545i SE Auto
'03 53 E60 545i SE Auto (Stolen)
'98 S E39 523i SE Auto
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sleeper
Really Senior Member II
Original and STILL best
Joined: 26-March-2004
Location: East Sussex/Kent border
Status: Offline
Points: 2098
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Posted: 06-January-2006 at 08:57 |
no sweat - I did one last weekend and went through the same thing!!
Cheers!
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Andrew Rolland
Moderator Group
Go away rain
Joined: 19-August-2004
Location: Scotland
Status: Offline
Points: 6579
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Posted: 06-January-2006 at 08:56 |
Thanks Sleeper.
I phoned up ECP and they told me it was the correct pump for all 6 pot M52 BMW engines regardless of age. I am aware that there is a change of things in Sep 1998 which is just after my build date so I was worried I may have a slightly different pump but I don't so everything is tickety boo!
Andrew
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Be exclusive and drive a Petrol 5 Series!
Current
'13 62 F10 535i MSport Auto
Previous
'04 04 E60 545i SE Auto
'03 53 E60 545i SE Auto (Stolen)
'98 S E39 523i SE Auto
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sleeper
Really Senior Member II
Original and STILL best
Joined: 26-March-2004
Location: East Sussex/Kent border
Status: Offline
Points: 2098
|
Posted: 06-January-2006 at 08:46 |
no they are not equal about the centre.
they are grouped holes, rotate thro' 90 degrees and it fits.
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Andrew Rolland
Moderator Group
Go away rain
Joined: 19-August-2004
Location: Scotland
Status: Offline
Points: 6579
|
Posted: 06-January-2006 at 08:40 |
A query for you all to ponder over.
I have just bought a new water pump (OEM) for my E39 from Euro Car Parts for the sum of £37.71 inc vat. Henry Bros want £70.50 for a BMW one.
Looking at in the box, I have measured the spaces between the 4 bolt holes that secure the pulley onto the hub. The 4 holes are not located at the corners of a square but at the corners of a rectangle. Two of the bolts holes are the same distance from the centre of the pump spindle which id different from the other two.
This means that the water pump pulley can only be bolted to the hub in two positions and not four.
This seems a bit strange to me as I would have thought the bolt holes would all be at the same distance radially from the centre of the pump spindle but they are not on this new pump.
I was under the impression that my car has the bolt holes at the same spacings.
Can anyone confirm this before I go and strip out the old pump tomorrow morning?
Andrew
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Be exclusive and drive a Petrol 5 Series!
Current
'13 62 F10 535i MSport Auto
Previous
'04 04 E60 545i SE Auto
'03 53 E60 545i SE Auto (Stolen)
'98 S E39 523i SE Auto
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M52 Water pump pulley bolts
