For everyone in the forum, please read! - Page 2 - PeachParts Mercedes-Benz Forum

tbomachines · #1 07-20-2010, 02:22 PM

Quote:

Originally Posted by lsmalley

try reading the original post

I did, its mostly take-off-and-replace type stuff. I'd recommend taking it easy on WP and thermostat housing bolts as they can get brittle and snap if you torque too hard. Replacing them would also be a good idea.

lsmalley · #2 07-20-2010, 02:25 AM

I'm sure it is a straight forward job for someone that has some experience with cars, but this is my first time. I have never done it, never read a book on it, never seen it done before....doing cosmetic surgery is easy to me, but I'm sure it would be a little challenging for anyone of you that has never done it before. I just need a little guidance, I'm pretty much going in blind....anything can happen that I wanna be prepared for like stripping a bolt, breaking a piece off of something that I need to move to get to the water pump, etc. I'm already aware that I need to get a new belt tensioner since I heard that they tend not to re-tightened once removed. Two of you are arguing about the use of silicone for this application, I do not know which one of you are right. I only planned on putting it around any adjacent parts as a precautionary purpose, but should I or should I not? Input from someone that has done this job before on the same or similar model would be greatly appreciated. Thanks

latief · #3 07-20-2010, 10:44 AM

Quote:

Originally Posted by lsmalley

I'm sure it is a straight forward job for someone that has some experience with cars, but this is my first time. I have never done it, never read a book on it, never seen it done before....doing cosmetic surgery is easy to me, but I'm sure it would be a little challenging for anyone of you that has never done it before. I just need a little guidance, I'm pretty much going in blind....anything can happen that I wanna be prepared for like stripping a bolt, breaking a piece off of something that I need to move to get to the water pump, etc. I'm already aware that I need to get a new belt tensioner since I heard that they tend not to re-tightened once removed. Two of you are arguing about the use of silicone for this application, I do not know which one of you are right. I only planned on putting it around any adjacent parts as a precautionary purpose, but should I or should I not? Input from someone that has done this job before on the same or similar model would be greatly appreciated. Thanks

For the water pump job, No silicone involved anywhere..yes I have don't it on my car... factory service manual also does indicate the usage of silicone anywhere.....it does not really add any additional protection, and could cause an unnecessary mess

The only time you need some silicone like compound is if you are resealing the front timing cover...but that is not what you are doing...

The water pump itself is an easy job. getting to it is not too bad if you keep track of what you did. it has 4 allen bolts, the lower two are tricky to get out without the right tools.....spray bolts with PB blaster a night before to make breaking them easier...they might be a bit rusted as was the case with mine..

I am not really sure what you are doing with the PS pump, as i have not touched that...

good luck

ps2cho · #4 07-20-2010, 03:42 AM

The biggest torque setting you'll need is 80nm for the main tensioner bolt. Follow the guidelines carefully for resetting the tensioner. Doing it out of order can prematurely wear the bushings inside.
This is half the reason so many break is because uninformed mechanics or DIY'ers do not do follow the manual at all, or follow it incorrectly and seeing as the bushings are already aged, it just finishes it off.

You don't need to remove the power steering pump though as the manual states. I got away without as shown here:

I recommend getting new allen bolts since more than likely you'll chew them up a bit. Just remember to crack the bolts with a swift palm hit rather than just using increasing pressure as that'll just strip them then you are in for some fun...The DIY on this site at the top covers the procedure pretty well if you have not reviewed it yet.

lsmalley · #5 07-20-2010, 03:56 AM

thanks for the intel.....but my ps is leaking and I would like to seal it. I'm gonna try to get a diagram of this job, wp replacement do I at least know where to begin. any other advice us welcome. thanks ps2cho

lsmalley · #6 07-20-2010, 06:08 AM

yes, I did get the 2 - 3 inch hose connecting the wp to the block. I also have a box of different sized o rings. anything else.

lsmalley · #7 07-20-2010, 04:10 PM

tjts1 could you email me the diagram please! i wish u would've mentioned that u had a pdf in the first place....I was panicked about going in blind. thanks

TylerH860 · #8 07-20-2010, 04:28 PM

Why does everyone on the forum have to read this?

tjts1 · #9 07-20-2010, 06:00 PM

Ok, everybody, lets pratice together now. Say it with me:

Overflow tank

Expansion tank

Now repeat.

Any question? Good!

lsmalley · #10 07-21-2010, 03:58 AM

Ok guys heres a status update....the leaking got to the point where I could only drive about 2-3 miles before I had to pull over and fill the radiator and all my parts come in on thursday so this is what I did: I got the radiator off, not completely, just out of the way, I took the front fan blade off, got the belt off and had access to the wp, but the only bolt I could get off was the hex key bolt in the front. The other two are behind the damn waterpump and the intake manifold is blocking it! Damn Germans! what were they thinking?! Anyways, while I had complete access and couldn't remove or get to the two bolts behind, I decided to add some water directly into the wp to pinpoint the leak and it was coming from a tiny hole that I could not see, but I could feel with my finger and see water pouring at a steady stream. Only having one car and needing to work tomorrow I decided to do a temporary fix. I slathered some high-temp resistant silicone over the hole and let it sit for a few hours. I put everything back together and let it sit for a few hours and when I added the water, BINGO! no more leak! Not competely satisfied with the water holding, I decided to test it out and drove around for a while and what do you know, its fixed! I don't no for how long, but so far so good. I'm tempted to leave it as is until it starts leaking again because I could not even get the damn pump off. The belt tensioner tightened right back up as well, no squeling at all on the initial start. What do you guys think of this quick fix? Is it ok to see how long the silicone holds for? Is there any risk in that?

Rahulio1989300E · #11 07-21-2010, 04:40 AM

Does/did the water pump pulley have any play to it if push or pulled in an up and down motion relative to the ground? I think these water pumps start leaking when the main bearings inside of them are wearing out. If that is the case, then your pump may have a very limited life.

Gilly · #12 07-21-2010, 05:48 AM

The seals are shot. The hole is for pressure relief between the inner and outer seal. The only real risk is the plug of silicone popping out, which I imagine it will do in fairly short order, so the only risk is losing the coolant, which you're used to already anyways.
Yes the rear ones are hard, but not impossible. Just need a medium sized extension and a swivel adapter and a "can do" attitude. I don't let tits1 intimidate me, why let 2 lousy bolts intimidate YOU?
Gilly

Ivanerrol · #13 07-21-2010, 08:50 AM

See this DIY

Note that this DIY involves removing the water pump, steering pump and cooling fan pulleys.

Here's the parts I pull off when doing a pump. + the belt tensioner and shock.

Here's an image of where I was a little extravagant - pulled the distributor and all off. Note the rust in the water chamber - P.O. of this car was a little lax with the coolant.

Here's another source of a water leak at the pump.

lee polowczuk · #14 07-21-2010, 09:02 AM

Quote:

Originally Posted by Ivanerrol

See this DIY

Note that this DIY involves removing the water pump, steering pump and cooling fan pulleys.

Here's the parts I pull off when doing a pump. + the belt tensioner and shock.

Here's an image of where I was a little extravagant - pulled the distributor and all off. Note the rust in the water chamber - P.O. of this car was a little lax with the coolant.

Here's another source of a water leak at the pump.

i followed sixto's wiki almost to the t

lsmalley · #15 07-21-2010, 10:59 AM

Quote:

Originally Posted by Rahulio1989300E

Does/did the water pump pulley have any play to it if push or pulled in an up and down motion relative to the ground? I think these water pumps start leaking when the main bearings inside of them are wearing out. If that is the case, then your pump may have a very limited life.

I did not notice any play at all, as I have tried to wiggle the pulley around to see if it was loose. All other parts were in decent condition as well being that I had the fan bearing bracket, alternator, tensioner, tensioner rod, and idler pulley all replaced about 1-2 years ago.