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Author Topic: 2.5td water pump gone?  (Read 850 times)

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o-meg-a

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2.5td water pump gone?
« on: 22 March 2011, 15:25:13 »
Just parked up now and have lots of water on floor instantly.
Seems to be from behind or above the drive for the viscous fan.

Is this the water pump?

Difficult job?

Literally the last thing I need right now.
« Last Edit: 22 March 2011, 16:59:53 by o-meg-a »
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tunnie

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Re: 2.5td radiator just burst. just what i dont need
« Reply #1 on: 22 March 2011, 15:53:43 »
is the replacement also from a manual? Rads on Autos have an oil cooler you would need to block off...
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Marks DTM Calib

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Re: 2.5td radiator just burst. just what i dont need
« Reply #2 on: 22 March 2011, 15:54:59 »
Quote
is the replacement also from a manual? Rads on Autos have an oil cooler you would need to block off...

Nah, just leave it open to the elements  :y
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tunnie

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Re: 2.5td radiator just burst. just what i dont need
« Reply #3 on: 22 March 2011, 15:58:17 »
Quote
Quote
is the replacement also from a manual? Rads on Autos have an oil cooler you would need to block off...

Nah, just leave it open to the elements  :y

Fair enough, thought it might have needed to be sealed.  :)
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o-meg-a

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Re: 2.5td radiator just burst. just what i dont need
« Reply #4 on: 22 March 2011, 16:51:14 »
Initial thread amended due to change of diagnosis.
« Last Edit: 22 March 2011, 17:00:40 by o-meg-a »
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o-meg-a

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Re: 2.5td water pump gone?
« Reply #5 on: 22 March 2011, 17:37:43 »
Lots of play in the viscous fan. and i think the source of my squeaking also.
I am right in assuming the Fan is attached to the water pump...?

Looks like it is.
I think once i have done the water pump I will remove the fan for good, as i'm sure its no good for the bearing in the water pump over time.

Most people complain about water pumps because they stop working (eg overheating happens) beacus the plastic fins snap. Mine is leaking.....big time. Is that the same issue or could there be something besides the water pump causing the leak?

Either way, i assume with the amount of play in the fan that its naffed and will need to be replaced regardless...
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Shackeng

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Re: 2.5td water pump gone?
« Reply #6 on: 22 March 2011, 18:07:35 »
I did a 'How to' some time ago which includes water pump change, here: http://www.omegaowners.com/forum/YaBB.pl?num=1264071895  :y

HTH
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o-meg-a

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Re: 2.5td water pump gone?
« Reply #7 on: 22 March 2011, 18:19:46 »
Quote
I did a 'How to' some time ago which includes water pump change, here: http://www.omegaowners.com/forum/YaBB.pl?num=1264071895  :y

HTH

thanks, looks like it will be very useful,
I'm about to order a water pump. £30 seems good with 2 year warranty.
Has the all important metal impellers.

I have a spare belt for the car already but it looks to be in good nick.
Should i buy a pulley wheel as well?
Or will this be ok?
I know some of the plastic ones can be a sod when they crack etc.

Whats the best way to brace the pulley when undoing the fan?
I have seen some tools made specially for it, but i have no such thing.
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Agemo

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Re: 2.5td water pump gone?
« Reply #8 on: 22 March 2011, 21:35:40 »
Quote
Lots of play in the viscous fan.

It is recommended on here viscous fans are removed, easy job.  :y
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o-meg-a

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Re: 2.5td water pump gone?
« Reply #9 on: 22 March 2011, 21:59:53 »
Quote
Quote
Lots of play in the viscous fan.

It is recommended on here viscous fans are removed, easy job.  :y


Fair enough, just have to get hold of a 32mm spanner now, and the pump of course.....
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TheBoy

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Re: 2.5td water pump gone?
« Reply #10 on: 22 March 2011, 22:12:52 »
Viscous screws onto waterpump shaft.

Its a left hand thread, and can sometime be a bit of a sod to remove.  That aside, its a 20 minute job, though I'd use the opportunity to fully change coolant by using the drain plug just aft of turbo.

Sure I posted up a method (the Omegatoy way) of removing aux belt which is less likely to destroy the tensioner than the official BMW way...
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Seth

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Re: 2.5td water pump gone?
« Reply #11 on: 22 March 2011, 22:18:25 »
If it's the water pump at fault, I'd recommend fitting one with a METAL impeller from my supplier.
Cost's around 50 quid. ;)
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o-meg-a

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Re: 2.5td water pump gone?
« Reply #12 on: 23 March 2011, 00:51:46 »
Quote
If it's the water pump at fault, I'd recommend fitting one with a METAL impeller from my supplier.
Cost's around 50 quid. ;)

Yeah i'm making sure i get a metal impeller one.

and am i right in saying the way you loosen tensioner is to apply pressure down wards on the black part having loosened the left pivot bolt and removed the right securing bolt, which then allows the bolt in the middle of the things that looks like a mini shock absorber to be undone (whilst pressure is released)

seems like it should be easy.
All about having the right tools.

I was planning on doing a full coolant flush and change too yeah, seems like a good idea.
VX coolant worth a shot, or just anything decent?
Viscous is coming off too,
will see how temps are without it. If it stays cool, it will stay off.
(secretly i kinda like it tho, nice whoosh....!!!!)
« Last Edit: 23 March 2011, 00:52:50 by o-meg-a »
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