P/S Pump Adjusting nut problem - Mercedes-Benz Forum
 
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post #1 of 5 (permalink) Old 07-12-2008, 12:59 PM Thread Starter
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P/S Pump Adjusting nut problem

When changing my V-belts, I noticed that the nut that the power steering pump adjusting bolt screws into is all chewed up and doesn't work. It looks like it's hard plastic and is supposed to be somewhat egg shaped so it sticks into an orifice on the back of the P/S pump and moves it as you loosen or tighten the adjusting bolt. Does anyone know where to find a miscellaneous nut like this or how to look up the part number?

Any help is appreciated.
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post #2 of 5 (permalink) Old 07-12-2008, 09:46 PM
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Have you tried a forum search (minimum of 3 words with more than 3 letters ea.)?
https://www.benzworld.org/forums/w126...ease-read.html



Which files do you need?

46 Steering System

Checking of steering

* 46-050 - Technical data
* 46-110 - Checking steering play
* 46-130 - Checking power steering pump oil pressure
* 46-140 - Replacing steering following accident
* 46-220 - Reconditioning steering gear

Power steering

* 46-412 - Remove and replace steering gear
* 46-480 - Readjustment of steering gear in vehicle

Steering linkage, steering arms

* 46-512 - Remove and replace pitman arm and lower housing cover seal
* 46-520 - Check idler arm play, remove and replace idler arm bushing
* 46-540 - Remove and replace tie rod ends
* 46-550 - Remove and replace center link
* 46-560 - Remove and replace center link and tie rod end boots

Steering wheel, steering column, steering shaft, steering lock

* 46-610 - Remove and replace steering wheel
* 46-612 - Remove and replace steering wheel slip ring
* 46-620 - Remove and replace steering column
* 46-625 - Steering column disassembly/assembly
o Select page...
* 46-640 - Remove and replace steering wheel lock

Power steering pump

* 46-700 - Power steering pump identification
* 46-705 - Remove and replace power steering pump seal
* 46-710 - Remove and replace power steering pump
* 46-715 - Filling and bleeding power steering pump
* 46-720 - Disassembly/assembly power steering pump
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post #3 of 5 (permalink) Old 07-13-2008, 07:29 AM
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Its in the archive as well:
Cheers
Attached Files
File Type: pdf 46-710 rem & install power steer. pump.pdf (266.2 KB, 82 views)
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post #4 of 5 (permalink) Old 07-15-2008, 12:16 PM Thread Starter
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P/S Pump Adjusting nut problem

Kent at MercedesSource.com was able to find a few used nuts. Here is a picture of it, it's a square plastic nut with "nubs" sticking off the side that go into an orifice on the back of the P/S pump. It's not very hard plastic so they eventually get mangled or shear off and the tensioner bolt just spins and spins. Bad design on this one I think.
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post #5 of 5 (permalink) Old 07-15-2008, 12:37 PM
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We have a few van's with the same function nut in metal. The threads still go bad.
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