Vacuum Pump Gasket - PeachParts Mercedes-Benz Forum

my123ca · #1 02-04-2010, 05:15 PM

Just a quick question:

1. Do you put gasket sealant to the gasket of the vacuum pump?
2. Should the lobes in the IP timing wheel(?) be horizontal or vertival?

leathermang · #2 02-04-2010, 05:34 PM

You should put a picture of the type of vacuum pump which is on your car....

dadette123 · #3 02-04-2010, 05:41 PM

Quote:

Originally Posted by my123ca

Just a quick question:

1. Do you put gasket sealant to the gasket of the vacuum pump?
2. Should the lobes in the IP timing wheel(?) be horizontal or vertival?

Is this your vacuum pump?

my123ca · #4 02-04-2010, 05:57 PM

Quote:

Originally Posted by dadette123

Is this your vacuum pump?

yes. that is the one.

dadette123 · #5 02-04-2010, 06:06 PM

Well, I don't believe MB calls for any sealer. But, both mating surfaces have to be very clean.

my123ca · #6 02-04-2010, 06:16 PM

Thanks. Is there a psecial way to mount the pump? Shhould the lobes be horizontal or vertical?

Stevo · #7 02-04-2010, 06:18 PM

Quote:

Originally Posted by my123ca

Just a quick question:

1. Do you put gasket sealant to the gasket of the vacuum pump?
2. Should the lobes in the IP timing wheel(?) be horizontal or vertival?

As I remember the "valleys' of the little "rollorcoster' track go vertical, turn the engine clockwise, I use the steering pump bolt.

leathermang · #8 02-04-2010, 06:31 PM

Quote:

Originally Posted by Stevo

I use the steering pump bolt.

LOL, you knew I was going to say this...
The FSM specifically forbids using the power steering pump nut to turn the engine... it is a tapered shaft and too much pressure on it can really cause problems later....

ImBroke · #9 02-04-2010, 08:34 PM

I used a razor blade and thought the surfaces were very clean. Still leaked. So, I used a very small amount. No leak. Just my experience though.

Stevo · #10 02-05-2010, 10:23 AM

Quote:

Originally Posted by leathermang

LOL, you knew I was going to say this...
The FSM specifically forbids using the power steering pump nut to turn the engine... it is a tapered shaft and too much pressure on it can really cause problems later....

Yes, I knew you'd be standing by to jump on that one

,
I haven't seen too many posts from folks having problems after using the P/S bolt, and its such a pain to use the crank bolt as is bumping the starter, but you cant be faulted by advising people to "go by the book".

75Sv1 · #11 02-05-2010, 12:26 PM

I use Holymar (sp) type. I think I bought it at NAPA. Its a type of fluid or such and not a brand name. I use it not just for sealing, but if I have to take off the gasket again, it usualy just peals off. I forget which way the lobes were. But a made sure, I didn't have to compress the spring in the vacuum pump, in order to get the bolts in place.
Tom

djmono · #12 02-05-2010, 12:54 PM

I didn't use sealer, just a dry gasket and VERY clean surfaces. I remember having to turn the engine to get it to sit flat. I tried lining everything up prior to turning the engine, but still needed to turn the engine to get it just right.

And, I turned mine from the PS Pump.

my123ca · #13 02-05-2010, 07:53 PM

Does anyone know the tightening torque spec to attach the pump to the engine. I cant find it in the book.

toomany MBZ · #14 02-05-2010, 07:55 PM

If you can't find a value, (what book?) there probably isn't one.

my123ca · #15 02-05-2010, 08:11 PM

The Mercedes Service Manual.