Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: griffin on 15 October 2011, 14:46:38

Title: How do you remove a water pump
Post by: griffin on 15 October 2011, 14:46:38: Hi all

How do you remove a water pump I taken the aux belt off but cannot get access to the pump?

Do I need to remove plenum and camcover?

Thanks
Title: Re: How do you remove a water pump
Post by: TheBoy on 15 October 2011, 15:02:13: yup
Title: Re: How do you remove a water pump
Post by: griffin on 15 October 2011, 15:11:38: Bugger!

May be to much for me then!
Title: Re: How do you remove a water pump
Post by: griffin on 15 October 2011, 15:24:04: Ah sod it! in for a penny in for a pound I'm going to have a go now where are those distructions!!! :D
Title: Re: How do you remove a water pump
Post by: Varche on 15 October 2011, 15:26:50: Is a 2.6 different from a 2.5 then?

I changed mine on the 2.5 without removing the cambelt cover. You do have to be careful not to drop any of the three torx headed bolts that hold the pump in position but a bit of grease in the socket head helps. :y
Title: Re: How do you remove a water pump
Post by: griffin on 15 October 2011, 15:28:16: Hi Varche

I've removed the pulley cover but the actual pump appears to be behind the cam cover?
Title: Re: How do you remove a water pump
Post by: griffin on 15 October 2011, 15:47:02: How do get to the small nut and bolt on the cam cover just behind the Aux pulley :o :o
Title: Re: How do you remove a water pump
Post by: Varche on 15 October 2011, 16:19:11: Hi

From memory there are three small bolts - about 10 mm normal head that hold the pulley on the water pump. When you take those off THEN you can see into the recesses of the cam cover and just get at the TorX bolts that actually hold the pump onto the engine block.. Slim extn bar helps

have you got a new pump to fit? Or are you just renewing the seal? If you have a pump you will see where the torx bolts are.

Anyone confirm that the 2.5 and the 2.6 are the same in this area pls?
Title: Re: How do you remove a water pump
Post by: TheBoy on 15 October 2011, 18:41:44: Quote from: griffin on 15 October 2011, 15:47:02
How do get to the small nut and bolt on the cam cover just behind the Aux pulley :o :o
remove aux tensioner (2 E45 bolts)
Title: Re: How do you remove a water pump
Post by: Elite Pete on 16 October 2011, 12:02:49: You can remove the pump without taking the cambelt cover off but be careful not to drop the torx bolts into the cover
Title: Re: How do you remove a water pump
Post by: Darth Loo-knee on 16 October 2011, 12:04:49: Quote from: Varche on 15 October 2011, 15:26:50
Is a 2.6 different from a 2.5 then?

I changed mine on the 2.5 without removing the cambelt cover. You do have to be careful not to drop any of the three torx headed bolts that hold the pump in position but a bit of grease in the socket head helps. :y

Yes. 2.5 has a short plenum a 2.6 has a long plenum :y
Title: Re: How do you remove a water pump
Post by: griffin on 16 October 2011, 14:32:16: Thanks for all the help guys.

Finally managed to remove cam cover and reveal the water pump! Me thinks I need a new tool kit as I cant seem to find a socet that will remove the pump bolts just keeps sliding round lol

So thats a job for another weekend.
:)
Title: Re: How do you remove a water pump
Post by: albitz on 16 October 2011, 16:01:17: As said,they are torx type bolts,so you will need the correct size torx socket to remove them. ;)
Title: Re: How do you remove a water pump
Post by: Andy H on 16 October 2011, 19:25:01: You need a set of these http://www.draperproducts.co.uk/31379/Draper-31379-DRAPER-EXPERT-7-PIECE-SET-OF-DRAPER-TX-STAR-SOCKETS-ON-A-RAIL.html (http://www.draperproducts.co.uk/31379/Draper-31379-DRAPER-EXPERT-7-PIECE-SET-OF-DRAPER-TX-STAR-SOCKETS-ON-A-RAIL.html)

(http://www.draperproducts.co.uk/ProductImages/31379_BD7TXi.jpg)
Title: Re: How do you remove a water pump
Post by: griffin on 16 October 2011, 20:01:06: Thanks Andy H, I'll have to invest in a set! ;)
Title: Re: How do you remove a water pump
Post by: griffin on 22 October 2011, 15:11:43: Having invested in the right tools the old water pump has been removed!

It there any maintenance I should do before fitting the new pump?

Cheers
Title: Re: How do you remove a water pump
Post by: Elite Pete on 22 October 2011, 15:33:09: Just clean the mating surfaces and put a bit of grease on them ;)
Title: Re: How do you remove a water pump
Post by: polilara on 22 October 2011, 15:44:24: Did you remove the plenum ? I just realized that is was recommended.

Actually I never remove it when changing timing belt etc. I just remove the part

is it "Throttle Body"
Title: Re: How do you remove a water pump
Post by: griffin on 22 October 2011, 15:47:02: Hi

Thanks Elite Pete!

I did remove the plenum not sure I needed too tho! May have been able to do it with just the Throttle Body removed
Title: Re: How do you remove a water pump
Post by: griffin on 28 October 2011, 18:41:14: God I'm a crap machanic!!

I've removed and fitted the new water pump now I cant get the flipping timing belt cover back on. The bracket that holds the aux belt pulley is in the way and I cant force the cover down behind.

Any suggestions please!!!!!
Title: Re: How do you remove a water pump
Post by: Osprey on 28 October 2011, 19:05:07: Take the bracket off - two bolts round the corner IIRC, nose wet. :y
Title: Re: How do you remove a water pump
Post by: griffin on 28 October 2011, 19:10:37: Thanks I'll have a look in the morning :y
Title: Re: How do you remove a water pump
Post by: griffin on 28 October 2011, 21:49:19: Final piece of advice on this subject hopefully.

Need to replace the antifreeze which I can get from my local factors. Do I need to flush the system first?
Title: Re: How do you remove a water pump
Post by: Andy B on 28 October 2011, 22:29:23: Quote from: griffin on 28 October 2011, 21:49:19
Final piece of advice on this subject hopefully.

Need to replace the antifreeze which I can get from my local factors. Do I need to flush the system first?

You need to make sure you don't mix different types of anti-freeze in there ie long life pink with blue ethylene glycol, so if the new is the same as what was already in there, then no, you don't. But if they're different, yes you do! :y :y :y
Title: Re: How do you remove a water pump
Post by: griffin on 29 October 2011, 11:56:57: Thanks Andy B for advice about antifreeze!!

I seem to remnoving a lot of bits at the moment trying to get this timing cover back on!!.

The auxilary bracket is this helpd on by the two largish torx bolts just on the corner of the engine block?????
Title: Re: How do you remove a water pump
Post by: joff on 29 October 2011, 12:12:35: Yup :y
Title: Re: How do you remove a water pump
Post by: griffin on 29 October 2011, 12:14:17: Thanks and this does need to be removed? or is there another way
Title: Re: How do you remove a water pump
Post by: joff on 29 October 2011, 12:34:47: Just undo the two bolts and it comes off, and don't put it back on until you have the cam belt cover back on. :y
Title: Re: How do you remove a water pump
Post by: griffin on 29 October 2011, 13:37:21: Cant belive it I think I've done it lol.

Just a flush out and refil with new coolant and jobs done :y
Title: Re: How do you remove a water pump
Post by: Andy B on 29 October 2011, 14:17:47: Quote from: griffin on 29 October 2011, 13:37:21
Cant belive it I think I've done it lol.

Just a flush out and refil with new coolant and jobs done :y

There's a guide somewhere if you need it, but when you have flushed through & you just have fresh water in the system, drain off what you can - which is about half the capacity - slowly pour in as much of your 5 litres of antifreeze, start the engine & top up as the level goes down and 'burp' the large hoses. The stat will open & the level will go down a bit more, top up what you can. Keep an eye on the level over the next day or so & top up as required. :y :y
Title: Re: How do you remove a water pump
Post by: griffin on 30 October 2011, 12:35:57: Morning!

Almost there new coolants in cars upto temperature fans started coolants at the max mark

BUT!

I have cold air blowing though the vents temp set to high on both sides!

Any suggestions please!

Thanks
Title: Re: How do you remove a water pump
Post by: Andy B on 30 October 2011, 12:39:20: Air locked. Burp all the large hoses you can get to, but it should sort itself out by itself. ;)
Title: Re: How do you remove a water pump
Post by: griffin on 30 October 2011, 12:43:11: Thank Andy B one more probably daft question should I be burping with the expansion cap on or off!!!! :-\
Title: Re: How do you remove a water pump
Post by: tunnie on 30 October 2011, 12:44:56: I'd leave it off, keep an eye on it :)
Title: Re: How do you remove a water pump
Post by: griffin on 30 October 2011, 12:53:51: I did that and I've just had a shower of coolant from the expansion tank what am I doing wrong!

:o
Title: Re: How do you remove a water pump
Post by: tunnie on 30 October 2011, 12:59:55: Was the engine hot? Sorry should have warned you if it was hot to release cap, very, very slowly. Let it go cold, start it (with cap off) while burping it. As you do it, just keep an eye on the coolant bottle
Title: Re: How do you remove a water pump
Post by: griffin on 30 October 2011, 13:04:24: Bugger, Seem to have loast all my coolant from the tank does this mean I need to start again with flushing and refillig with new coolant :'(
Title: Re: How do you remove a water pump
Post by: tunnie on 30 October 2011, 13:10:37: somethings a bit off if you lost everything from the coolant tank :o

You loose a little bit if its hot & pressure is released, but not that much!

Let it all go cold, top it up, then start it with cap off, burp it & let it settle
Title: Re: How do you remove a water pump
Post by: griffin on 30 October 2011, 13:13:09: Tunnie, top up with water or coolant there's about and 1/2inch of coolant left on the tank!

:-\
Title: Re: How do you remove a water pump
Post by: albitz on 30 October 2011, 14:04:06: Top it up with coolant - then as Tunnie says,start it from cold with cap off.Burp the hoses until it gets hot.Hopefully that will sort it. :y
Title: Re: How do you remove a water pump
Post by: tunnie on 30 October 2011, 14:09:33: Yes, always coolant, summer you can get away with water, but with weather now, always coolant in a 50:50 mix :y
Title: Re: How do you remove a water pump
Post by: Andy B on 30 October 2011, 14:29:11: Quote from: tunnie on 30 October 2011, 14:09:33
Yes, always coolant, summer you can get away with water, but with weather now, always coolant in a 50:50 mix :y

ah! but can you? ::) As you know coolant isn't just anti-freeze, it's also a corrosion inhibitor which is especially needed in an engine with ally bits ;) ;) :y
Title: Re: How do you remove a water pump
Post by: Andy B on 30 October 2011, 14:31:22: Quote from: griffin on 30 October 2011, 12:53:51
I did that and I've just had a shower of coolant from the expansion tank what am I doing wrong!

:o

You should always be very very careful removing the cap from a hot header tank/radiator. System is pressurised because the coolant has got hot & there's nowhere for the pressure to go - it's supposed to be like that (the cap has a relief valve in it)