Author Topic: Power steering flush  (Read 4195 times)

Sleek Lemur

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Power steering flush
« on: July 14, 2018, 11:27:33 »
Can anyone give me a link on the site for this job ? Can't find one; am probably being dozy.

Many thanks!


Jowe

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Re: Power steering flush
« Reply #1 on: July 14, 2018, 20:19:51 »
Check page 28 in the Enthusiast Service & Maintenance Manual, https://www.sl113.org/wiki/Restricted/ServiceManual, where you will find links to describing videos.
Johan
04/1964 230SL, European, manual 4-sp, power steering, 050/050 white, black leather, Blaupunkt (SOLD)

WRe

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Re: Power steering flush
« Reply #2 on: July 15, 2018, 07:45:05 »
Hi,
unfortunately there is no plug where you can drain your steering fluid. I did it by dilution means suck the reservoir e.g. with a big syringe (250ml) and refill it with fresh ATF fluid.I did this several times. Don't forget to change the filter at the bottom of the reservoir.
If you want to flush it you can see it here: https://youtu.be/8UCaxsFVYDw. It's not a Pagoda but it can be done the same way.
...WRe

Pawel66

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Re: Power steering flush
« Reply #3 on: July 15, 2018, 07:52:56 »
This is in front of me as I want to replace my red ATF with the Mercedes recommended oil. Make sure you read the relevant posts (under "1970280SL p/s hose" topic or similar).
« Last Edit: July 15, 2018, 09:29:13 by Pawel66 »
Pawel

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

Mike K

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Re: Power steering flush
« Reply #4 on: July 15, 2018, 08:15:33 »
I recently undertook this job, emptied the reservoir with a large syringe.
In the pic below you can see the state of the old filter compared to the new one.

It's also worth checking the condition of the rubber seal on the inside of the reservoir cap, which in my case needed replacing.
The fluid had been leaking out of the top of the cap.

Best
Mike

Feb. 1971 Mercedes 280SL Auto  LHD (Last of W113 Series)
Aug. 1989 Mercedes R107 300SL RHD (Last of R107 Series)
http://michali.zenfolio.com
http://www.lebombo-safaris.com

Sleek Lemur

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Re: Power steering flush
« Reply #5 on: July 18, 2018, 11:15:05 »
Many thanks to all who have replied. Will do the job today !

Benz Dr.

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Re: Power steering flush
« Reply #6 on: July 18, 2018, 17:28:42 »
This is in front of me as I want to replace my red ATF with the Mercedes recommended oil. Make sure you read the relevant posts (under "1970280SL p/s hose" topic or similar).

Why would that matter or make a difference? I use synthetic ATF in my power steering but I'm sure ordinary stuff would OK. 

Note to further post: gasket for lid is paper or fiber and not rubber.
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC

Pawel66

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Re: Power steering flush
« Reply #7 on: July 18, 2018, 17:31:59 »
Why would that matter or make a difference? I use synthetic ATF in my power steering but I'm sure ordinary stuff would OK. 

Perhaps it does not. Perhaps the MB specs are there just to make more margin. But if they are there and it does not cost a fortune - I prefer to observe them...
Pawel

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

wayne R

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Re: Power steering flush
« Reply #8 on: October 23, 2018, 10:16:43 »
Others may not agree, but just this week i flushed  mine ,
and did all the normal things ,bleed out all air from bleed nipple to reservoir.
over the years i have always used  Preston power steering fluid
in all my classics,,so i used it this time in my 1965 230SL and
im sure the steering is so much quieter and smoother  than ever.

MikeSimon

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Re: Power steering flush
« Reply #9 on: October 23, 2018, 11:47:58 »
When I was working for a hydraulic power steering pump manufacturer, we recommended NOT to change the fluid at all. There is really no operating condition in a P/S system which will make the fluid deteriorate if you follow the rules. And when you open the system, the chance that you introduce contamination is a big one.
Small particles are the main enemy of a properly functioning power steering pump and steering valve in the gear.
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner