Ok so I have an 82 300TD with the SLS and a bad diesel engine.

I bought a sedan engine. I was told that the "power" for the SLS pump comes from the head of the engine.

So how do I fix this problem so I can put the sedan motor in my wagon and still have a working SLS?

Ya I had to do this once... My girlfriend at the time had bad compression so she ordered a used engine... I specifically asked for a wagon engine and they assured me it was one.. got it and it had the wrong head!

If both engines are out of the car and on a stand its not so bad.. the hardest part of the job it timing the injection pump! If you do swap the heads at least you will have a new timing chain and head gasket.. but those parts are not common to replace...

Kinda fun...

Ya I am rebuilding my SLS right now... The previous owner put gas shocks in I am about to diagnose the SLS once all the body welding is finished,,, we are almost done cutting out all the rust and hand forging new metal pieces and welding them in ! It pays to have a blacksmith for a best friend!

I will try to post some pics...

I put new SLS Shocks in and new lines to the accumulators.. the system has been dry for 4 years! I will most likely need accumulators and a pump rebuild... I haven;t seen a listing for a supplier who sells the pump rebuild kits in this thread... Anyone know?

Thanks. wish me luck who knows maybe it will magically work!

Uh, post 4?

I just replaced the accumulators in my 1990 560 SEL last night. The ride improved dramatically, though I now have some leaks at the fittings. Hopefully all that is required is a tightening.

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1990 560 SEL- "Goldielocks"
1984 300SD TurboDiesel- "Ole' Blue"

So if I unscrew the cap and lift it out a bit, I should be able to see fluid circulating back into the reservoir while the engine is running?

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

Yes. If you're going to do that much work, change the fluid while you're at it. Let the return line run into a container of some kind and feed fresh fluid into the reservoir.

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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

pulled the cap off yesterday, i didn't see any flow...guess that's why my rear was sagging...i was pulling a trailer. the fluid level is full. today the rear seemed level, but i dropped the trailer last night. I wounder if the pump is shot?

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

Try starting the car and then have to adults sit in the back with the rear open and your feet on the ground. You can feel the rear lift, that is if the pump it working. If nothing happens then your fluid is low or the pump isn't doing it's job.

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Hi, I'm new here, but i've been reading this forum since I have my W123 300TD. I am also sorry, if a similar problem has been discussed before.

The thing is - I have changed both the accumulators and the SLS valve (a tested used one) - my car does rise up as it should and the ride is not hard, nor bouncy - the only problem is that it sags overnight.

The symptom, which I find uncommon, is that after the engine is turned off - I can hear a noise of something loosing pressure - like a tire deflating - could this mean that everything is working fine, only there is a loose connection in the system?

I just wanted to make sure, before rebuilding the pump/changing springs/struts. Maybe you could advice on the next step.

Many thanks.

If only it were so cheap and easy with the T124.

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Gone to the dark side

- Jeff

If it was the struts youd be leaking. Its the valve.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

The chances of the pump still working are minimal.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

The valve, accumulators, and struts are probably fine, but the pump may not be. It runs no matter what when the engine is running, so it may be toast. But I'd get some mineral oil and fill the system and see what happens. The system is self bleeding, so you just fill the reservoir and start the car and keep filling it untill it maintains between the marks on the res. Run it for a while. And keep any eye on the fluid and watch what the rearend is doing. If you get no raising at all then the pump is not doing it's job anymore.

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Great post and info!

I am looking for the proper removal/install proceedure for the SLS pump on a 1988 560SEC. I have the repair kit already. I could probably just wing it but would rather it were done by the book.

Does anyone have some thoughts? Thanks!

David

I'm not familiar with that engine, but I'm sure someone here with the 126 FSM could post the pdf for you.

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