Draining coolant and changing water pump.

[Damian]

Hello.

Going to try and do this job tomorrow. Is there anything I need to know / avoid when draining and re-filling coolant or changing the water pump?

Thanks.

[Boddney]

Can't help you with the water pump change as I've never done it but here is the "how to" for the coolant drain, refill & bleed procedure.

Bod

http://myweb.tiscali.co.uk/jimilawson/V ... oling.html

[Damian]

HI bod.

Thanks for this.

I've only got 11 litres of pre mixed Toyota coolant. What should I do. TOp up with water or undiluted coolant?

[jimi]

11 litres will probably be enough, 12.4 is for a completely empty system, it's unlikely you will manage to completely empty it. If it's not enough, it's only going to be a little short, I'd use undiluted coolant to top it up if you need to.

[LimeyMk1]

May be a bit late but don't forget to loosen the water pump pulley bolts before you remove the belt.

I always forget.

[Boddney]

Thats good advice. I forgot to do that when I did my cam belt. That really makes the job a PITA.

[BIGBOBO]

Don't forget to get a new O ring for the back plate of the water pump. It's probably not included with a generic water pump.

I didn't replace it and it started to leak, had to do the whole thing over.

[Damian]

Yeah forgot about these little blighters so had to nip to B&Q for a couple of new ones from the plumbing section. Hopefully they'll be ok!

[010on1986]

I think the most important part of a coolant change is to measure what has been drained in litres before you refil.

It gives you an immediate indication that you have not satisfactorily refilled.

I removed 7 litres last september, it took 6 litres straightaway and some time and burping before the other litre was taken.

[Damian]

Ah yes. That would have been a good idea!

Instead i poured it all away down the drain...