Auxilliary heating pump W124 260E 1988 - PeachParts Mercedes-Benz Forum

cc260E · #1 10-23-2005, 09:39 AM

Can somebody tell me whether this pump can be repaired (actually it is leaking) or shall I change for a new one?

thanks in advance

haasman · #2 10-23-2005, 02:48 PM

I beleive a dealership lists a rebuild kit for it. I looked on this site and I didn't find one.

If it were mine, I would take it out and look at what is leaking and what needs to be rebuilt before buying the kit. I beleive the last one I replaced I bought a good used one.

Haasman

cc260E · #3 10-23-2005, 03:06 PM

Thanks haasman for the quick reply.
i will check first

taker22 · #4 10-23-2005, 04:16 PM

what you show pic of is actually the auxillary water pump.

joel · #5 10-24-2005, 11:41 AM

no repair kit available. new pump about 200 bucks!

bobbyv · #6 10-24-2005, 11:52 AM

Actually, that pump is a non-critical item. Mine had short-circuited and was causing the climate-control unit to shut down to protect itself, and the fix was simply to disconnect the electrical connection to the pump. The purpose of the pump is to pump the coolant when the engine is idling - above idling, the coolant flows sufficiently for heating purposes.

So if you are in a pinch, I believe that you can just find an elbow connector for the two hoses, and just bypass the pump, since your pump is leaking. In my case, the pump was not leaking, so I simply disabled the electrical connection, and my heating system works fine.

pesuazo · #7 10-24-2005, 12:29 PM

I fixed mine.
I removed the screws, pulled it apart and rejoined the 2 sections with a new gasket.

haasman · #8 10-24-2005, 12:51 PM

Is the gasket available separately?

haasman

cc260E · #9 10-25-2005, 03:00 AM

Quote:

Originally Posted by bobbyv

Actually, that pump is a non-critical item. Mine had short-circuited and was causing the climate-control unit to shut down to protect itself, and the fix was simply to disconnect the electrical connection to the pump. The purpose of the pump is to pump the coolant when the engine is idling - above idling, the coolant flows sufficiently for heating purposes.

So if you are in a pinch, I believe that you can just find an elbow connector for the two hoses, and just bypass the pump, since your pump is leaking. In my case, the pump was not leaking, so I simply disabled the electrical connection, and my heating system works fine.

Thanks bobbyv,
If this pump is mainly usefull at idling, would it explain that the temperature of my engine goes sometimes high , even with a new fan cluth and new water pump, and comes back to normal as soon as the car is in moving?

bill · #10 10-28-2005, 10:03 PM

Quote:

Originally Posted by cc260E

Thanks bobbyv,
If this pump is mainly usefull at idling, would it explain that the temperature of my engine goes sometimes high , even with a new fan cluth and new water pump, and comes back to normal as soon as the car is in moving?

Does Auxiliary Water Pump useful for reducing overheat?
I mean while working the car go heat or cool?

taker22 · #11 10-25-2005, 07:15 AM

the part is their for a purpose so why disconnect it??? that makes no sense. mine was leaking like yours and I replaced it. the part costs approx. $200 and takes about 30 minutes to replace.

taker22 · #12 10-25-2005, 06:11 PM

look at the initial post. his is LEAKING and he wants to know whether it can be repaired or if it has to be replaced. yours was simply not working so your choice was simpler. I live in the cold Northeast so I prefer to have mine working properly without leaks. Sorry if you cannot grasp that.

#13 10-26-2005, 05:12 AM

Fast lane the sites sponsor can order you the gasket to stop the leak it cost me like 3 bucks for mine but it took a couple weeks to get it. PN 000 586 05 83
Dave S

joel · #14 10-26-2005, 08:55 AM

BEfore any repair, just make sure pump motor works!!

mctwin2kman · #15 10-26-2005, 08:51 AM

Quote:

Originally Posted by taker22

look at the initial post. his is LEAKING and he wants to know whether it can be repaired or if it has to be replaced. yours was simply not working so your choice was simpler. I live in the cold Northeast so I prefer to have mine working properly without leaks. Sorry if you cannot grasp that.

Sorry you can't grasp the it is leaking so bypass it and try that. Save a few bucks if it works and he/she is happy. That is all I was saying. Funny I get fine heat with the thing still in line and not spinning. SO if anything it is impeding flow and I get great heat. Actually enough to make me roll the windows down. Well since I have a sticky blend air flap that I have to look into. It was only a sugestion. If you do not like it fine, no need to keep going on about it and insinuate someone is cheap or can not afford some part that you would gladly pay full price for. The can is 18 years old and of course he could just buy a used part or a new one or just bypass it. Three choices I give him instead of the one you had. Sorry but I like to know what something does and why it is there before I go replacing it. If it is not needed and is marked as an Aux type object then I use my brain to decide. Same thing I did for my clutch fan. Clutch died and I took the fan out, it was a drag on the lil M102 as it was. Just made it so the Aux Electric Fan kicks on at 100 degrees instead if the main fan, and it even goes to high speed at 110 like it normally would do. The engineer in me just does not like throwing money at something if not needed. And hey 18 years ago this may have been the way it was! I will actually now have to look under the hood of my W203 and see if they still use that silly aux pump on the newer ones though. Just curious now.....