Author Topic: Having rough time installing power steering pump belt on my 280SL.  (Read 1727 times)

CJHenderson

  • Full Member
  • Silver
  • ****
  • USA, AR, Benton
  • Posts: 469
Having rough time installing power steering pump belt on my 280SL. I have a new belt AVX 13x750 belt and my bracket that holds the pump does not have much adjustment movement. What am I doing wrong? Also, I have this adjuster that is supposed to be part of that belt adjustment. When dismantling the car this item was not on the pump. Do I need it and how do I attach it?
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

Pawel66

  • Full Member
  • Platinum
  • ******
  • Poland, Mazowieckie, Konstancin-Jeziorna
  • Posts: 5474
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

dirkbalter

  • Full Member
  • Platinum
  • ******
  • USA, CA, Corona
  • Posts: 1469
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #2 on: January 29, 2024, 22:59:21 »
And here.
Dirk
66 230 SL
70 280 SEL
53 CHEVY 3100
18 C300 COUPE
05 HD FLSTNI

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7414
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #3 on: January 30, 2024, 02:52:35 »
That part is mainly to tighten the belt. It sould not keep you from getting a new belt on. Make sure all the frt bolts are loose and there is also one bolt on the rear which must be loose. At that point move the pump inward and the belt should go on. It is always a tight fit anyway. It will require some force to slip it on.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

CFF

  • Full Member
  • Junior Level
  • *
  • USA, CT, Milford
  • Posts: 25
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #4 on: January 31, 2024, 11:05:44 »
That’s part of the adjuster. If you look at the bottom bolt on the power steering pump bracket you’ll see it fits over that bolt. It’s also missing two jam nuts.

The belts tight as can be Mercedes could have made it a 760mm belt! Start the belt and bar the motor over it will go on.

CJHenderson

  • Full Member
  • Silver
  • ****
  • USA, AR, Benton
  • Posts: 469
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #5 on: February 02, 2024, 14:08:35 »
Well so much for the belt adjuster, it snapped when trying to tighten the belt. I didn't have it when I stripped the engine down and I will not waste my money on another one.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

Pawel66

  • Full Member
  • Platinum
  • ******
  • Poland, Mazowieckie, Konstancin-Jeziorna
  • Posts: 5474
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #6 on: February 02, 2024, 17:00:49 »
It is a $100 at Mercedes or EUR 30 at SLS item. I think your belt may be squeaking if not tightened. Maybe you have not loosen all the bolts that should have been loosen. There should not be such strong forces there that would make it snap...
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

CJHenderson

  • Full Member
  • Silver
  • ****
  • USA, AR, Benton
  • Posts: 469
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #7 on: February 02, 2024, 17:30:13 »
They where all loose, I resorted to crow bar to take any slack out.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

Kevkeller

  • Full Member
  • Silver
  • ****
  • USA, HI, Honolulu
  • Posts: 388
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #8 on: February 04, 2024, 12:39:38 »
There’s a spacer that on my car makes it very difficult to loosen and move the pump back and forth.  I’ve thought about grinding off a couple thousandths to make it easier.
1970 280 SL

Pawel66

  • Full Member
  • Platinum
  • ******
  • Poland, Mazowieckie, Konstancin-Jeziorna
  • Posts: 5474
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #9 on: February 04, 2024, 14:19:28 »
In case it is needed: there are various lengths of this spacer available at dealers.
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

CJHenderson

  • Full Member
  • Silver
  • ****
  • USA, AR, Benton
  • Posts: 469
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #10 on: February 04, 2024, 14:42:30 »
Finally got the power steering mounted, but next time I have to change the belt I will yank the spacer out and shave it. Thank you all for the great advice.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

Kevkeller

  • Full Member
  • Silver
  • ****
  • USA, HI, Honolulu
  • Posts: 388
Re: Having rough time installing power steering pump belt on my 280SL.
« Reply #11 on: February 04, 2024, 19:02:33 »
I’ve got a lathe and I can use that to take a little off. If I screw it up I’ll make a new one easily.  But it really made things difficult being so tight.
1970 280 SL