Cinquecento Sporting Water Pump Replacement

Cinquecento Sporting Water Pump Replacement

I had never fixed anything in a cinq before, so this was all very daunting for me taking on this job, it was the first job I had to do on it and it was probably a rude awakening to Cinq ownership!!

After I found water dripping off the bottom of the oil filter end of the engine, I removed the various covers and it was apparent the water pump was leaking, the following pic shows as a rusty stain, where the leak was, shown by an arrow.

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You may notice that in the above pic, the alternator pulley is back on, thats because the leak was only evident with engine running, and the 1108 sporting engine wont run without the pulley as it runs the timing sensor, therefore it was temporarily refitted while the engine warmed and so that the leak could be traced.

Remove the top and bottom cam belt covers, you will need to take off the drivers side front wheel and arch liner. I found removing the water header tank out of the way made a massive difference to access, overall the job was far easier than I anticipated.

You will need to remove the bottom alternator drive belt pulley, to get the lower cam belt cover off, using a 16mm spanner undo the alternator nuts to allow it to move forward, it looks tricky but is actually quite easy. Remove the belt, followed by the pulley.

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Off we go then with removing the cam belt, top sprocket was lined up with the line on the cam belt and the line on the sprocket, facing the timing mark indentation on the head.

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The bottom pulley was out of line by about 1 or 2 teeth on my engine, so that was made up for when reassembled.

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The old pump came out quite easy, after undoing the 4 x 10mm nuts on the pump I just put a bar in down by the exhaust manifold to the water pump lip where it protudes from the block slightly, gave it a knock and then eased it out by working under the front arch.

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This is where it came from... face was cleaned up nice ready for new pump to go in

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New pump, with supplied Loctite sealant added

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Pump now in place and bolts nipped up, I gave then 45 mins before nipping them a bit tighter, I have found this gives a better seal looking back on other jobs I have done using gasket sealant

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I reused the belt that came off, as it wasnt very old and the timing marks were still very clear, however now is the best time to replace the belt, so take note!! I Placed the belt back on the top cam pulley, lined up the line on the belt with the pulley, placed some duck tape on top to stop the belt falling off, threaded belt round water pump pulley, then the tensioner, then lined up the bottom pulley to the line on the belt. Here we see me using a small crow bar to wedge the tensioner to get the belt tight, I then nipped up the nut with the spanner from above. Removed the tape then turned engine by hand 3 turns and all was well, job done!! Tightened tensioner nut fully.

All that was left to do then, was put cam belt covers back on, the lower one was possibly the hardest part of the whole job, followed by water tank back in place and plumbed in, fill with water and antifreeze. Alternator drive belt back on to pulley then pulley bolted back up, alternator tightened back up, then I run engine - all fine!! Putting the arch liner back in was a swine.

Overall, replacing the water pump was an easier job than it looks, getting the cam belt tight was easier than I thought too, moving the header tank out of the way made a big difference, recommended.

Words and pics taken from my Cinq site @ www.levemir.2ya.com

autokaci · 31-01-2007

Hi,

I just replaced the water pump and timing belt on a Punto 55 which has the same engine as the Sporting and your write up helped a lot.

But I have some questions with the following which I would like you to reply to!

Off we go then with removing the cam belt, top sprocket was lined up with the line on the cam belt and the line on the sprocket, facing the timing mark indentation on the head.

How did you do this? I turned the engine many times but never managed to get the lines on the cam belt to line up with the mark on the sprocket and the the mark on the head??? Could you please explain better?

The bottom pulley was out of line by about 1 or 2 teeth on my engine, so that was made up for when reassembled.

I found mine to be out 4 teeth!!! Is this something common when the water pump/bearing fails??? I found the cam belt to be very slack in fact, so I suspected that the belt slipped! Could this be?

Your reply would be really appreciated.

Thanks,

Kaci

levemir · 01-02-2007

I just replaced the water pump and timing belt on a Punto 55 which has the same engine as the Sporting and your write up helped a lot.
But I have some questions with the following which I would like you to reply to!

Thanks!!

How did you do this? I turned the engine many times but never managed to get the lines on the cam belt to line up with the mark on the sprocket and the the mark on the head??? Could you please explain better?

When I took it all apart, the lines were almost lined up anyway, however when I put it all back together I used the lines to line up the belt, then after a few turns of the engine you want to be looking for the timing marks on the pulleys to line up in the same place as you set them. You may have to turn it more to get the belt lines to come back into place. I think the belt lines are just there for initial setting as a guide.

I found mine to be out 4 teeth!!! Is this something common when the water pump/bearing fails??? I found the cam belt to be very slack in fact, so I suspected that the belt slipped! Could this be?

I doubt they slip due to the water pump failing, chances are the last person to give the belt attention didnt take care in getting it right, OR that the belt has slipped / jumped at high revs due to its slackness - more probable. Remember that was my first ever Fiat water pump change, so perhaps other users may know more.

Wagoneer · 02-01-2009

I've just done mine. Rather than take the timing belt off, I wedged it in place with cloths. I did undo the tensioner to give me some slack which I carefully moved to around the water pump pulley by turning the crank. This gave me plenty of room to manouevre the old pump off and get the new one in.

andyireland · 23-01-2009

Originally Posted by Wagoneer

I've just done mine. Rather than take the timing belt off, I wedged it in place with cloths. I did undo the tensioner to give me some slack which I carefully moved to around the water pump pulley by turning the crank. This gave me plenty of room to manouevre the old pump off and get the new one in.

can anyone help ,what is the disc just to left of water pump for(i think its for air con option) mine has just got a hole in it and is squirting out water!

levemir · 23-01-2009

Originally Posted by andyireland

can anyone help ,what is the disc just to left of water pump for(i think its for air con option) mine has just got a hole in it and is squirting out water!

the disc in the pic below? ( marked X )

That is a core plug, if yours is holed [could be rusty] you will need a new one, they arent worth trying to repair, dont take the old one out until you get a new one and are satisfied its the right size.

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