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Old 11-19-2013, 02:41 PM
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Join Date: Oct 2013
Posts: 52
TEMPORARILY rough ride - SLS actuators?

Hi there,

I recently replaced my leaky hydraulic lines and filled my system with fluid (no idea how long it ran without it - car is new to me). Ride quality or height doesn't seem to have changed much (generally pretty good), but its only sagging a little bit, which isn't concerning me too much.


When driving the other day a large man got into the front seat (~300 lbs) and rode for about 10 miles with me. After a minute or two, the ride became incredibly harsh. Then after a few minutes it went totally back to normal, even with him still in the car.

I was afraid I had an accumulator failure, but that wouldn't have gone away like that. I'm confused and worried. Are they about to go? Should I bite the bullet and keep some on hand in that case?

Last edited by arzueck; 11-21-2013 at 06:54 AM.
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Old 11-20-2013, 08:29 AM
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Join Date: Sep 2008
Location: Monteagle, TN
Posts: 324
My guess is your valve added pressure to the system until it maxxed out and thats why the ride got hard. Mine does that occasionally when I load it. Not sure what you mean by actuator, but its definitely not your accumulators.
I would rebuild the valve. 300TD on here has kits.
1985 300 TD 448K
1984 300 TD 278K

1983 240D euro 240k
1994 f-250 idi turbo 330K
1986 f-350 IDI
1987 F-350 IDI

1985 JD 1050 4wd
1965 IH 3660
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Old 11-21-2013, 06:55 AM
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Join Date: Oct 2013
Posts: 52
Thanks a lot! That makes sense.

And yeah, I meant accumulators.
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Old 11-21-2013, 09:54 AM
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Join Date: Jan 2002
Posts: 18,356
I wouldn't worry about it. It takes a while (not usually that long though) for the system to adjust to load changes. For instance, when I have a lot of passengers and we stop and get out, I can hear hissing as the system adjusts to a lower weight by bleeding off some pressure.

1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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