Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Agemo on 15 February 2011, 20:14:00

Title: 2.5TD Thermostat change, anyone done the job?
Post by: Agemo on 15 February 2011, 20:14:00

My temp is far too low, suspect 'stat. I have now found the thing, looks awkward to get to, anyone done one recently?   ::)

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: charlie on 15 February 2011, 20:18:31

Not to bad a job,drain water, viscous off(as it has air con)take pipe of housing,then the housing 3*10mm bolts replace stat and seal.irsmc :ymight ive forgot you might have to take off that plastic with turbo diesel writen on it :-[

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Evo on 15 February 2011, 21:26:45

This maintenance guide with photos could be helpful

http://www.omegaowners.com/forum/YaBB.pl?num=1264071895

You don't need to remove pipe immediately in front of it.

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Agemo on 15 February 2011, 21:34:13

Thanks lads, I am a bit worried about losing the air-con, sounds like the pipe has to be removed? The maint. guide is useful, thanks. Not sure how to remove the viscous fan, how do I stop the thing turning?

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: TheBoy on 15 February 2011, 22:33:30

no need to touch aircon doing this job...

its dead easy on 2.5TD :)

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Agemo on 15 February 2011, 22:49:39

Thanks TB, I intend getting rid of the viscous fan too, how do you stop the coupling turning while you undo the 32mm hex? Or is it just the actual fan blades that come off?

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Seth on 16 February 2011, 01:14:54

Glen, just put a spanner on the viscous nut at 5 mins past the hour, and give it a clockwise 'whack' with a hammer.

The complete fan assembly can then be undone/withdrawn.

If yours has the cowling fitted, then it'll need to be removed with the fan!

HTH ;)

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Agemo on 16 February 2011, 08:51:00

Thanks Byron. You're a star.  :y

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Evo on 16 February 2011, 11:02:02

You might be lucky with just a spanner but I needed a tool to stop the fan rotating.

Some people say you can just wedge a big screwdriver in to do it.

I used a Sealey Viscous Fan Holding Tool VS095 & then a mere tap with a sledgehammer on the spanner did the trick.

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: erubus on 16 February 2011, 17:01:40

you probably know, but just in case, remember it's a left hand thread.  My old td's viscous was on so tight i ended up having to cut it off, although i was replacing the water pump at the time, so didn't need to keep the shaft in one piece.

Title: Re: 2.5TD Thermostat change, anyone done the job?
Post by: Agemo on 17 February 2011, 19:16:07

Fan is now off, (actually I removed it yesterday but didn't have time to post) Thanks to all, yes the left hand thread is something to remember, mine came adrift easily with a couple of sharp taps with Harry the hammer. Thanks to all.
p.s. my temp is now going up more of the time, nearing normal, but I have a thermostat now so will replace.  :y