rust in pulleys! 1979 300TD - Page 2 - PeachParts Mercedes-Benz Forum

barry123400 · #16 10-26-2011, 10:21 AM

I am not sure if you are reffering to the utility belts or not. They are belts that are used on items like table saws and furnace blowers. Any hardware store or simular larger home depo etc should have a selection of utility belts. I had a peek under the hood late yesterday and it looks like 39 inch belts.

There are so many numbers on those belts I am not positive though. Take along an old belt for comparison. They are cheap as well.

chasinthesun · #17 10-26-2011, 10:44 AM

An old farmers trick for rust removal on farm equip.is farm molasses,you can get it at your local feed house or some outdoor outlets sell it for attracting deer close to hunters as a bait on feed.It takes a week sitting in the solution but doesnt eat the metal.Youtube had some videos of a car restorer using it in Australia .

JB3 · #18 10-26-2011, 10:45 AM

Id consider replacing the pulleys. By now you have easily paid for jy or even new pulleys several times with belt purchases.

Be fun to keep them and put them on a lathe to a light pass though, just to see what they look like, maybe there is a blatant obvious section that just keeps escaping attention.

question, curious how the PO thought that leaving the hood up was a deterrent for rodents? Ive never heard of anyone doing that for that reason. they probably saw it as a nice covered porch for their home in the climate control and under the rear seat

peachykeen · #19 10-30-2011, 08:54 PM

Quote:

Originally Posted by Zulfiqar

Ive put belts on engines with super rusty pulleys, the running of the engine cleaned out the pulleys in under 5 minutes, the only way the belt can be shredded is that the belt is running askew or the pulley grooves (poly belt) are not true.

I totally understand that -- but my rust is a bit advanced -- the rust has actually pitted the inside V section, so I should have clarified that to begin with --- however, only in about a 6" area...I know that best fix is to replace the pulley on the crank, but I'm only a novice mechanic...so, this weekend I took the belt off and sanded some more as best as I could from under the car and got it as smooth as possible...hopefully I'll be able to get more miles this time before having to either retighten or replace the belt --

I have double checked the alignment and the pulleys are right on. I know the belt is getting eaten away since it will start to squeal and there is a fine, fine rubber dust that starts coating the engine compartment..

thanks for any other input..

peachykeen · #20 10-30-2011, 08:59 PM

Quote:

Originally Posted by barry123400

I am not sure if you are reffering to the utility belts or not. They are belts that are used on items like table saws and furnace blowers. Any hardware store or simular larger home depo etc should have a selection of utility belts. I had a peek under the hood late yesterday and it looks like 39 inch belts.

There are so many numbers on those belts I am not positive though. Take along an old belt for comparison. They are cheap as well.

OK! -- I'll go check this week for them -- so are these utility belts made a little more durable? I wonder what is the difference between them and auto belts??

Thanks a lot!

JB3 · #21 10-31-2011, 08:00 AM

Quote:

Originally Posted by peachykeen

I totally understand that -- but my rust is a bit advanced -- the rust has actually pitted the inside V section, so I should have clarified that to begin with --- however, only in about a 6" area...I know that best fix is to replace the pulley on the crank, but I'm only a novice mechanic...so, this weekend I took the belt off and sanded some more as best as I could from under the car and got it as smooth as possible...hopefully I'll be able to get more miles this time before having to either retighten or replace the belt --

I have double checked the alignment and the pulleys are right on. I know the belt is getting eaten away since it will start to squeal and there is a fine, fine rubber dust that starts coating the engine compartment..

thanks for any other input..

Why don't you fill in the pitted area with jbweld, then sand it down flat again?

whunter · #22 10-31-2011, 08:33 AM

Quote:

Originally Posted by peachykeen

the PO of my wagon left the car outside w/ the hood up to keep rodents from moving into the engine compartment for a couple yrs...apparently some rust started in the grooves of pulleys...after figuring out why my belts were prematurely dying...I sanded down as best I could inside the grooves...it has helped...now I can go about 1000k, but then the belts start getting whittled away...

any other suggestions OTHER than having to replace them? more sanding? i'm not confident taking all that apart -- so hopefully some other recommendations!

thanks as usual!

I suggest these for cleaning the pulley.

52 Piece Sanding Cone Set

.

peachykeen · #23 04-14-2012, 09:10 AM

Quote:

Originally Posted by dropnosky

Why don't you fill in the pitted area with jbweld, then sand it down flat again?

I think I'm going to try your suggestion!! JB weld --- might be the thing that finally does it...

I tried the utility belt and it ate it up in about 3 or so days -- crazy.

What does it take to pull the crank pulley off? do you have to pull the radiator first? I'm not sure if I'm up for that task.

anyway, off to get some some JBweld -- thanks very much for the suggestion -- can't wait to have this annoying issue over and done with..

todd