Help! Cooling leaking around aux. belt area :-(

[hkka]

I found my 172 got no coolant. Topped up and run, then water temp go up faster than normal, then overheat. I stopped right away, found the coolant was leaking. I don't see any from the inside the bonnet. Then I found it is near the aux. belt area (see attached pics).

I did a search and some said it can be the water pump leaking. Am I correct? Or, is that any hose that connect to that area? It is a bit hard to see from underneath. I think I got to remove more things to see.

Can someone post a diagram of the coolant system of 172?
And would be great if someone can tell me the part number for the 172 MK2 water pump?? I found one on Ebay, is that correct??

http://cgi.ebay.co.uk/GENUINE-RENAU...ryZ10410QQrdZ1QQssPageNameZWD7VQQcmdZViewItem

 

[davebem]

Yeah that water pump is the right one, have you checked the pipes that go into the pump? If it is the pump you will also need 2 new bolts that hold it on 7703002480 X2 and a new aux belt 8200226493.

 

[ditz]

there are no pipes that actually go in to the waterpump it bolts to the block, and its all it can be if it is dripping from the cambelt cover really.
last one i did i seem to remember there being some stupid countersunk phillips screw holding the thing on at the top which get completely obliterated trying to undo them, but the waterpump we got came with a new one.

 

[hkka]

Thank You so much for you guys help. Those diagram are v.good.

See the attached pic, may I know where does that pipe goes to?

And do I have to change the bolt as well???
My aux. belt is new for 1 year only, approx. 12,000miles.

 

[Fred@BTM]

the pipe you have circled goes into the block, into the water pump

 

[hkka]

the pipe you have circled goes into the block, into the water pump

Thanks a lot!
Can I change that pipe section?
Anyone has the part number of that pipe?

 

[bmh.01]

I can't find a part number for that hose? Not sure if its fitted to the 172? Don't remember seeing one on mine.