Power Steering Pump Replacement - Mercedes-Benz Forum
 
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post #1 of 6 (permalink) Old 02-28-2007, 01:50 PM Thread Starter
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Exclamation Power Steering Pump Replacement

Hello everyone,

Reading on similiar posts about P/S Pumps I find no solid answer to my questions.

My car's been in the garage for 5 months straight no use. After starting It and going around town I start hearing squeaky noise when steering right. I figured my Power Steering Pump need a replacement so I got one pretty quick.

I've checked the Pump Reservoir Fluid Level. Right where It says 60°. My fluid level is on minimum mark which I guess is not good. But then again I only warmed up the engine to 60 degrees and the weather around here is -20°.

Question is:

Should I add P/S Fluid anyway?

Or should I wait untill weather gets better and warm up the car to It's normal working temperature and then check on the level agian?

Another question is:

Is it wise to change the Steering Rack when replacing the Power Steering Pump? If yes, please supply the Part # for Steering Rack.

What else should be changed in tandem with Power Steering Pump?
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post #2 of 6 (permalink) Old 02-28-2007, 05:28 PM
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I dont think you have a bad pump, just low fluid level. just add fluid untill you cover all the lines. and no a rack doesnt need to be changed unless it is bad. it isnt cheap either.
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post #3 of 6 (permalink) Old 03-01-2007, 09:45 AM
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My car made the same type noise and it was just a little low on PS fluid. My dealer didn't even charge me to top it off. No more noise!

Don't believe everything you think
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post #4 of 6 (permalink) Old 03-04-2007, 02:14 PM
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Had a leaky pump last year, stealership wanted $2400 Cdn to replace it, went to the local autoparts store and picked up a bottle of power steering fluid with "StopLeak" for less than $8- problem fixed!

It also squealed like a pig at rest or tight turns- turned out the belt tensioner needed adjustment, my local indie mechanic did it n/c [started going to him instead of the dealer]
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post #5 of 6 (permalink) Old 03-04-2007, 03:31 PM
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Is there an echo in here?

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post #6 of 6 (permalink) Old 03-08-2007, 06:07 AM
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Quote:
Originally Posted by Jayhawk
My car made the same type noise and it was just a little low on PS fluid. My dealer didn't even charge me to top it off. No more noise!
Squealing noises when turning can be heard If your car been sitting for way to long without driving. Replacing Power Steering Fluid may help but not guaranteed. There is a Technical Service Bulletin for this problem released by Dymler-Chrylser.

Squealing / Squeaking Noises From Area of Rack-And-Pinion When Steering in Both Directions

If you receive customer reports in the above model vehicles of squealing or squeaking noises when steering in both directions when the engine is warm, the cause may be due to insufficient lubrication at the radial shaft sealing ring in the control head.

Lubrizol 6178 (MB Part # A0019896103) must only be used once in the steering system. No more than 50 ml of Lubrizol 6178 maybe added.

Follow below steps to add additive Lubrizol 6178 into steering oil:

  1. Check whether Lubrizol has already been added. This can be verified by a yellow dot on the steering gear and power steering pump housings.
  2. If Lubrizol has already been added, repair the vehicle per DTB P-B-46.20/25a dated March 27, 2006.
  3. Ensure steering system is brought up to operating temperature (approx. 80 deg C).
  4. Suction off 50 ml of steering oil.
  5. Pour in 50 ml of Lubrizol 6178 (NOTE : Shake bottle before pouring in).
  6. Turn steering wheel to a limit stop with the engine running. Then hold steering wheel in this position for 1-2 seconds and quickly (in jerking motion) turn the steering wheel out of the limit stop while increasing the engine speed from idle to approximately 1200 rpm. Repeat this procedure at both limit stops until the noise is no longer audible.
    Note : It is possible to repeat this procedure up to 20 times before the noise is no longer audible.
  7. Apply a dot with yellow touch-up paint on both the reservoir and steering gear housings. These markings serve as an identifier that additive Lubrizol 6178 has already been added to this vehicle and must not be added again.
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