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Old 07-04-2013, 07:42 AM   #11
nathanhdunn
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Default Re: T1N 647 Engine Water Pump Replacement

the waterpump on my OM612 went shortly after I bought it, at around 330,000km. I had a local mechanic to it and he used a merc pump reconditioned by a local waterpump specialist recon shop. Was half the price of a reconed one from the merc dealer. We'll see how it lasts but I'm fairly confident.
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Old 06-03-2016, 03:03 AM   #12
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Default Re: T1N 647 Engine Water Pump Replacement

Quote:
Originally Posted by Aqua Puttana View Post
Sure. Why not?

Now let's get back to OM647 Water Pump Replacements.

vic

P.S. - I meander often too. Sometimes any of us need a nudge back to topic. Me included.
Yes and don't fit an aftermarket paper gasket! It reduces the impeller run clearances in the case.
Some have been known to rub/bind when hot and not pump properly .
Remedy
Use the factory steel gasket..
Dennis
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Old 01-25-2017, 05:57 PM   #13
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Default Re: T1N 647 Engine Water Pump Replacement

Just replaced the water pump, tensioner and belt following this guide on my 2003 Sprinter 311. All the instructions were spot on. Removed the bumper and moved the radiator out of the way which made access all very easy. Had some trouble with the fan removal. After a snapped a decent Stanley screwdriver I decided it was just easier to order the Sealey VS095 tool to hold it properly. Used an aftermarket pump with an OEM gasket. A couple of the E10 bolts close to the pulley where much easier to access with a 1/4" 8mm socket rather than my 3/8" E sockets.

Thanks to everyone for all the advice...
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Old 09-06-2017, 12:47 PM   #14
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Default Re: T1N 647 Engine Water Pump Replacement

Quote:
Originally Posted by danpaul000 View Post
...

Given that discrepancy, would it be possible/advisable to put the old gasket on the new pump? I did not have any leaking on the old pump that I know of, just replaced it as a preventative. Does anyone have any good/neutral things to say about the paper gaskets reliability or longevity?

Thanks,
Dan
I'm not certain about the divot/ridge.

A professional shop would not do this. With DIY I have had good success.

Assuming the metal gasket properly matches the new pump body, I would re-use the steel gasket. My method would be to lightly coat the used gasket both sides with Permatex #2 non-hardening sealant. I always have Permatex #2 on hand. An alternative would be a thin coat of Permatex Ultra Blue sealant (which I also keep on hand) or similar.

For my water pump change I re-used the small steel gasket by applying the above method.

vic

Quote:
Originally Posted by lindenengineering View Post
Yes and don't fit an aftermarket paper gasket! It reduces the impeller run clearances in the case.
Some have been known to rub/bind when hot and not pump properly .
Remedy
Use the factory steel gasket..
Dennis
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Old 09-06-2017, 05:20 PM   #15
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Default Re: T1N 647 Engine Water Pump Replacement

As a general statement there is nothing wrong with paper or fiber gaskets, they are universal in the industry.
Now with that stated the steel gasket when crushed is designed for the water pump impeller to have a precise slip condition as it runs with a FIXED clearance against the timing cover parent housing.
What I have seen is that using paper aftermarket gaskets CAN cause a reduction in slip clearances and the impeller has been in contact against the case. This causes bind/ wear/ and excess friction slowing of the pump when working.
Dennis
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Old 09-06-2017, 05:20 PM   #16
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Default Re: T1N 647 Engine Water Pump Replacement

As a general statement there is nothing wrong with paper or fiber gaskets, they are universal in the industry.
Now with that stated the steel gasket when crushed is designed for the water pump impeller to have a precise slip condition as it runs with a FIXED clearance against the timing cover parent housing.
What I have seen is that using paper aftermarket gaskets CAN cause a reduction in slip clearances and the impeller has been in contact against the case. This causes bind/ wear/ and excess friction slowing of the pump when working.
Dennis
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Old 09-06-2017, 06:27 PM   #17
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Default Re: T1N 647 Engine Water Pump Replacement

Quote:
Originally Posted by lindenengineering View Post
As a general statement there is nothing wrong with paper or fiber gaskets, they are universal in the industry.
Now with that stated the steel gasket when crushed is designed for the water pump impeller to have a precise slip condition as it runs with a FIXED clearance against the timing cover parent housing.
What I have seen is that using paper aftermarket gaskets CAN cause a reduction in slip clearances and the impeller has been in contact against the case. This causes bind/ wear/ and excess friction slowing of the pump when working.
Dennis
Thanks Dennis. Is there any good way to test for this condition? I assume this would be caused by either over or under-torqueing the water pump housing bolts, which would impact how crushed the paper gasket becomes. Other than making sure the pump pulley still rotates smoothly when turned by hand, is there anything else to check?

Regards,
Dan
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Old 09-06-2017, 06:27 PM   #18
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Default Re: T1N 647 Engine Water Pump Replacement

Quote:
Originally Posted by lindenengineering View Post
As a general statement there is nothing wrong with paper or fiber gaskets, they are universal in the industry.
Now with that stated the steel gasket when crushed is designed for the water pump impeller to have a precise slip condition as it runs with a FIXED clearance against the timing cover parent housing.
What I have seen is that using paper aftermarket gaskets CAN cause a reduction in slip clearances and the impeller has been in contact against the case. This causes bind/ wear/ and excess friction slowing of the pump when working.
Dennis
Thanks Dennis. Is there any good way to test for this condition? I assume this would be caused by either over or under-torqueing the water pump housing bolts, which would impact how crushed the paper gasket becomes. Other than making sure the pump pulley still rotates smoothly when turned by hand, is there anything else to check?

Regards,
Dan
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Old 09-07-2017, 05:18 PM   #19
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Default Re: T1N 647 Engine Water Pump Replacement

I took another look at the old metal gasket that was used in the original water pump. It looks (as best I can tell) to be identical to this one for sale at Europaparts:

https://www.europaparts.com/water-pu...112010280.html

Notice the ridge in the middle of the perimeter. The new water pump I installed from Europarts came with a paper gasket, which has no such ridge, though it is a bit thicker overall than the sheet metal used in the original metal version (designed to crush down, as per Dennis).

The original pump had some kind of sealant laid down on the machined mating surface to make a tight fit around the metal ridge. I mistakenly thought the old pump had a mating divot for the gasket ridge machined out, wrong! Probably should have saved the beers until the job was entirely done this weekend.

Anyway, I am wondering if I should remove the new pump and order the metal gasket, and replace the paper gasket with the metal gasket? If so, what sealant product should I apply to the pump mating surface? I have the new pump bolted in, but the fan, shroud and belt are still out so I can remove the new pump pretty easily at this point. I'd rather finish the done right and not have to worry about it for another 200k miles!

Cheers,
Dan
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Old 09-07-2017, 05:18 PM   #20
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Default Re: T1N 647 Engine Water Pump Replacement

I took another look at the old metal gasket that was used in the original water pump. It looks (as best I can tell) to be identical to this one for sale at Europaparts:

https://www.europaparts.com/water-pu...112010280.html

Notice the ridge in the middle of the perimeter. The new water pump I installed from Europarts came with a paper gasket, which has no such ridge, though it is a bit thicker overall than the sheet metal used in the original metal version (designed to crush down, as per Dennis).

The original pump had some kind of sealant laid down on the machined mating surface to make a tight fit around the metal ridge. I mistakenly thought the old pump had a mating divot for the gasket ridge machined out, wrong! Probably should have saved the beers until the job was entirely done this weekend.

Anyway, I am wondering if I should remove the new pump and order the metal gasket, and replace the paper gasket with the metal gasket? If so, what sealant product should I apply to the pump mating surface? I have the new pump bolted in, but the fan, shroud and belt are still out so I can remove the new pump pretty easily at this point. I'd rather finish the done right and not have to worry about it for another 200k miles!

Cheers,
Dan
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