soft close doors vacuum pump replacement or repair.

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pina4greg
E Class
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Model you own: w140
Region: Victoria
Location: Eglinton

soft close doors vacuum pump replacement or repair.

Post by pina4greg » Mon 29 Jul, 2019 6:11 pm

Pulled out the vac pump from the boot and found that one of the lines had broken off the nipple. when taking off the other lines being so old, a small piece of each nipple has stuck inside the clips. can the nipples be replaced on these or do i need to source a whole replacement???
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1992 W140 300se

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Bartman4800
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Re: soft close doors vacuum pump replacement or repair.

Post by Bartman4800 » Mon 29 Jul, 2019 6:43 pm

Ouch, that looks like a 1 piece injection moulded part.

Unless the connectors are screwed in, you will have to buy a new one.

You can always try to glue it with 2-pack araldite....



Bart
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CraigB
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Re: soft close doors vacuum pump replacement or repair.

Post by CraigB » Mon 29 Jul, 2019 8:46 pm

That's disappointing to have that sort of structure where they should have known when they made it, it would have a restricted life. Just thinking out loud, and I'm not an engineer, but my thoughts went to if you could get metal tube that would slip down inside the outlet or you could maybe ream a little bit out. You don't want to make it too much bigger and weaken it. Then with glue you could slide the broken outlet back over it. Basically sleeving all those outlets. Its the same method really as they did when they made stupid plastic tanks on radiators and the top outlet broke and many motors destroyed. Replacement radiators then had a metal sleeve inside the outlet to strengthen it.

I think it will have to slightly restrict the diameter but I don't think it would matter that much. I'm trying to think where i would go for tube. A brake place with different diameter brake and fuel lines? I'm picturing some brass tube i have seen too but can't remember where I have seen it. Carby place? fuel line?
Craig Baulderstone
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Djenka018
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Re: soft close doors vacuum pump replacement or repair.

Post by Djenka018 » Mon 29 Jul, 2019 9:07 pm

RS components have pneumatics and accessories.

There was a screw-in pneumatic mount that on the other end had push-in fitting.

If I remember correctly they were both positive and negative pressure type.

3 steps: Tap, teflon tape, smile
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pina4greg
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Model you own: w140
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Re: soft close doors vacuum pump replacement or repair.

Post by pina4greg » Mon 29 Jul, 2019 11:24 pm

thanks guys, will give those ideas a thought.....just need to have the hoses sealed into the nipples....have mentioned this on the benzworld forum so will see what they come up with....parts a lot more accessable in the uSA.
1992 W140 300se

Ivanerrol
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Re: soft close doors vacuum pump replacement or repair.

Post by Ivanerrol » Tue 30 Jul, 2019 5:08 pm

Those pumps have been a short coming since the day the W140 was released.
Plenty of articles on the internet about the pumps.
The pump in my car broke down within 18 months from new.
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pina4greg
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Model you own: w140
Region: Victoria
Location: Eglinton

Re: soft close doors vacuum pump replacement or repair.

Post by pina4greg » Tue 30 Jul, 2019 7:40 pm

at least the doors still work other than closing a bit harder.... looking at a remanufactured one in the usa for about $450....or may wait a while...

thanks for everyones imput..
1992 W140 300se

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