Oh I did the spin test and the wheels go the same way.

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg

Wow, this is an old post! I edited the original posts to update the information. Anyway:

Yes, ASD has LSD (with 35% lockup at all times) at the core. The hydraulics simply exert pressure on the LSD clutch pack to make the lockup 100%, up to 19mph, at which point the hydrualics release. As the clutch pack wears out, the lockup percentage will reduce. The FSM procedure shows testing it with a torque wrench on a lift, with ASD engaged manually, the torque needed to turn one wheel separate from the other should be at least 100Nm higher than when ASD is not engaged.

I found a factory brochure which details the functionality of both ASD and ASR, I will scan that and upload it to my website. It does a better job of explaining how it all works than I could.

[QUOTE=gsxr;2144191]Wow, this is an old post! I edited the original posts to update the information. Anyway:

Yes, ASD has LSD (with 35% lockup at all times) at the core. The hydraulics simply exert pressure on the LSD clutch pack to make the lockup 100%, up to 19mph, at which point the hydrualics release. As the clutch pack wears out, the lockup percentage will reduce. The FSM procedure shows testing it with a torque wrench on a lift, with ASD engaged manually, the torque needed to turn one wheel separate from the other should be at least 100Nm higher than when ASD is not engaged.

I found a factory brochure which details the functionality of both ASD and ASR, I will scan that and upload it to my website. It does a better job of explaining how it all works than I could.

[/QUOTE

Dave, will you post a link when you get it scanned? I would like to read it. Any idea how much work it would be to add ASD to my wagon. I believe the SLS pump is used, so that is in place. I suspect I would need to add a feed line the the differential and the of course change out the differential. I believe in '88 it could be order with it.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

[/QUOTE

Any idea how much work it would be to add ASD to my wagon.[/QUOTE]

As you said, the ASD diff, hydraulic lines, and connection to pump. There is a valve near the axle that allows the fluid to circulate fore and aft, and then be sent to the diff when called for. The big issue is wiring up the ASD control unit "black box" with it's many inputs needed. Dave can explain why he did what he did to his car, and left it LSD only.