I need a parts rebuild kit for my 1982 300sd vacuum pump.
Mercedes source does not carry them any longer so the only place I could find was a few sellers on eBay who want a outrageous price for the kit.
Any help that someone could give me with this dilemma I would appreciate thank you.

Have you tried just replacing the check valve?

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CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

Got any e bay links to said rebuild kits?

As Moon161 suggested bout the check valve.

The Check Valve screws into the Vacuum Pump Housing and is where the main vacuum line attaches. It is not uncommon for the innards to come apart and for the valve to be entirely empty.

On mine that check valve was gunked up and I lost part of the vacuum. Removing the valve and seeing that the parts were intact and hosing out the crud with WD-40 did the trick and restored my Vacuum. Don't use Brake Cleaner as the Valve is Plastic and Brake Cleaner softens some plastics.

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel

Someone recently opined that the VW Diesel pump vacuum valves are the same and cheaply available......

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Part number?

__________________
CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

I have a 1990 300d in which the vacuum pump exploded at about 260,000 miles and the fragments got sucked up by the oil pump and fried the engine. The pump is driven directly off the cam, I think, drains directly into the oil pan, and uses a smallish ball bearing. On the replacement engine, with 260,000 mi., the pump seemed OK but I did not want a repeat and replaced the pump from Pelican. Did not want to pay the price but I sleep much better at night.

On my 84SD, there were 3 internal check valves and 1 on the outlet to the car. Parts that I found available were the 1 external check valve and the arm with bearing. I didn't find a source for the internal check valves. Available parts were expensive enough to make buying them futile considering there was no guarantee of having a working pump when done.

There were also some seals made out of o-ring material that were odd shaped and may need to be replaced. A quick search didn't turn up inexpensive or necessarily correct VW parts.

Does anyone have a model or specific engine that the VW pump was on? I looked at kits for mid 80s VW diesel pumps.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

I didn't copy the VW info I just read it on another thread here Monday ~ I was hoping someone else would remember, they were talking about the difficulty of getting the valves from Mercedes or Pelican .

Sorry .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

My Volvo Diesel Vacuum Pump is made by Pierberg and may or may not have some of the same internal parts but what pushes the piston is a steel Rod that runs on off of a special lobe on the Camshaft. So it is not the same as any of the Vacuum Pumps I have seen on this forum. Any way it is not a match for an 1982 300sd vacuum pump.

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84 300D, 82 Volvo 244Gl Diesel

There is several threads on using electric vacuum Pumps.

I as an experiment I did it for one test drive and it worked fine but the type of electric Vacuum Pump I used got really hot. I don't know if it is normal for that type or pump or not.
Other members have more extensive threads on that.

Not the Electric Vacuum Pumps that are up to the task are not cheap either.

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84 300D, 82 Volvo 244Gl Diesel

Member Stretch has a thread with pic and it shows a Piston type Vacuum Pump where Engine Oil has passed into the Pump and gunked up the Disc Valves.
It could be that you could simply clean out the Pump and restore use at least for some period of time.

I sheared off a couple of the Vacuum Pump Cover Screws and had to heat the rest and us penetrating oil on them.

Some have rounded out the bolts that bolt the Pump to the Engine or sheared some of them them off.

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84 300D, 82 Volvo 244Gl Diesel

Did you install a vacuum reserve tank and vacuum switch to turn it off?

I don't recall using any sort of reserve tank.

There is a constant vacuum leak at the Transmission Vacuum Valve. However, that is partly controlled by a restricted orifice between the Vacuum Supply and the Vacuum Valve. And of course the valve it self alters how much vacuum is used up.

There was no shutoff valve and the vacuum pump is one that is common on several European cars to assist the vacuum supply for the brake booster. Gassers with Turbos won't have intake manifold vacuum when they are boosting.
It has a Motor and at the top is a small rotary van Vacuum Pump and as near as I can tell there is no lubrication for it. Hence it gets too hot to touch when used in the Mercedes application.

There are other vacuum pumps beside that one. It was just rather cheap on eBay.

Note with the on and off switch it would be better if you also had a Relay.

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84 300D, 82 Volvo 244Gl Diesel

Here is my thread on the test.
Electric Vacuum/Brake Booster Pump Tested

There is 2 threads by other people that are more extensive and have more info.

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84 300D, 82 Volvo 244Gl Diesel