How to replace a 603 vacuum pump. - Page 7 - PeachParts Mercedes-Benz Forum

Hit Man X · #91 08-23-2007, 08:33 AM

Quote:

Originally Posted by P.E.Haiges

I must be lucky, bad lucky. I checked all 3 of my 603 ( '86 or '87 300SDL) engines and all 3 had the old style (smooth end) vacuum pump.

What are the chances of that happening?

P E H

Probably same type of initial owner that didn't take care of them new. Now we have the liberty to go back and fix those issues.

If you ask around, I bet someone would cut you a good deal on three...

gsxr · #92 08-23-2007, 11:06 AM

Quote:

Originally Posted by ke6dcj

Dave,

I've joined the club. Now to check this and a bunch of other things.

Awesome - congratulations, Neil! And welcome to the club.

Ya know, the last time Neil bought a wagon, it ended up with an AMG motor stuffed under the hood. Makes ya wonder what might happen to the "new" '87...

Hatterasguy · #93 08-23-2007, 12:49 PM

Quote:

Originally Posted by P.E.Haiges

I must be lucky, bad lucky. I checked all 3 of my 603 ( '86 or '87 300SDL) engines and all 3 had the old style (smooth end) vacuum pump.

What are the chances of that happening?

P E H

I'd start looking for a good deal on three!

They pop up on ebay now and than for under $100, can't beat that!

TX76513 · #94 01-04-2008, 10:04 AM

Hattie has a good 1-2-3 on the R/R of the vacuum pump. When I pulled my pump from the engine it literally fell into pieces on the floor (pic).
I did not pull the fan off. A thin wall deep and regular 10mm socket with an 8" extension with a swivel joint made it fairly simplistic.

One little note - don't overlook the small line that runs up to the T. I was shocked by it's condition and replaced. That line is sort of hidden and was definitely neglected by me.

Jeremy5848 · #95 01-04-2008, 12:22 PM

Quote:

Originally Posted by TX76513

...One little note - don't overlook the small line that runs up to the T. I was shocked by it's condition and replaced. That line is sort of hidden and was definitely neglected by me.

Yeah, mine was rotten too, it fell apart when I pulled on it.

Vasjor · #96 02-12-2008, 06:47 AM

Hi,

I´m having some strange noise from the engine! The sound is similar to a worn bearing.
My vacuum pump is the upgraded one ( four bolts outside).
Could the noise be from the bearing in side the vacuum pump?

Thanks guy!
regards

Vasco

rsieracki · #97 01-06-2010, 09:58 AM

I am in the process of resealing my ip. i have gotten as far as removing the 6 VacPump bolts but i cant wiggle the pump off, it seems like the belt tensioner is not letting it come out. i loosened the shock n spring but my VP is still hanging up somewhere. no where in any of the threads did it say to remove the vp, you need to remove the tensioner completely.... am i missing something here?

gsxr · #98 01-06-2010, 10:17 AM

I'm not sure what is hanging it up, but the belt tensioner does not have to be removed to get the vac pump off. You may need to push the tensioner all the way up or down (forget which), and/or rotate the engine slightly so the vac pump is not under tension from the timing device cam. I just did this job last week and the tensioner remained in place (including the shock).

Just remember to set the engine at ~14° ATDC, and insert the IP lock tool (making sure it's connected to the tang), before removing the pump. In addition to the side, bottom, & rear covers, ELR and vac shutoff... don't forget to also replace the stop lever shaft O-ring. This is often forgotten and often leaks!

rsieracki · #99 01-06-2010, 10:50 AM

thanks for thereply.

i DID rotate engine last night, jacked the tensioner every which way and the pump is still hanging up somewhere. maybe now after a good nights sleep i will go out n try again

where is the timing marker? i looked n looked n cant find... maybe its just covered in grease n grime

im on my way to the stealership to pick up my seals n lock tool (yes i ordered ahead) i think i ordered ALMOST all the seals listed in gsxrs posts on the ip and the wiki DIY article... the only visible leak i have is the oring where the ip bolts to block... started leaking like a mofo recently

rsieracki · #**100** 01-06-2010, 10:51 AM

oh whats the ELR? i think thats the one i didnt order

gsxr · #**101** 01-06-2010, 12:57 PM

The timing indicator is the triangle-shaped thingy which is pretty much right below the water pump, almost directly in the centerline of the w/p shaft.

ELR is the big round red thingy at the rear of the pump. I have found that the ELR itself starts leaking oil between the red plastic and the metal body, so I've been applying clear RTV silicone around the edge to try and seal it. I put it face down on the workbench, apply a thin bead of RTV in the little crevice, and let it sit overnight to dry before installing it back in the pump. I need to take a photo of the result, since it's a little hard to explain.

bgiovan · #**102** 01-17-2010, 09:38 PM

Going back to the original process post, I did not note a mention of this "IP" lock tool when R&R'ing the Vacuum Pump. Can you elaborate?

TIA!

gsxr · #**103** 01-17-2010, 09:48 PM

The injection pump (IP) lock tool is needed when removing & installing the injection pump, but is NOT needed only for replacing the vacuum pump. The vac pump is much easier to R&R.

Jacques405 · #**104** 08-13-2019, 03:53 PM

Thanks to the information in this thread, i changed the vacuum pump this evening.
I thought i would give some feedback...

The old one looks perfectly ok and it has two ball bearings, the new one only has one ball bearing...
The old one was fitted with a paper gasket, the new one came with the metal gasket without the dam.

Jacques405 · #**105** 08-14-2019, 03:35 AM

The car is a 1987 300TD, OM603 engine non turbo. Mileage unknown, propably well over 300 000kms...

I decided to change the VP and the belt tensioner assembly because of a persisting TICTICTIC from the engine...

My new VP is a Pierburg, it costed 161 euros.

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