Trolley jack lifting points

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Dweezil
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Trolley jack lifting points

Post by Dweezil » Sun 20 Mar, 2011 4:24 pm

Hi Team,

please forgive the simplicity of the question, but what are the best lifting points, front and back, when using a trolley jack on a 108?

Ta

Dweezil

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Mercmad
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Re: Trolley jack lifting points

Post by Mercmad » Sun 20 Mar, 2011 6:30 pm

good question actaully.
First never ever use a jack under the sills ,they WILL bend. never lift under the Front body cross member it too will bend easily.
Next,lift the front under the front axle,in the center. if you want to lift from the side ,in front, put the jack under the chassis rail in board . Dont let the front axle hang by itself.
In the rear,either under the diff center or in board of the rear jack points . the body is very strong just there.
Get some good axle stands to support the car, Never rely on a trolley jack to stay up. Too many people have died by not being careful under cars.

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John Green
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Re: Trolley jack lifting points

Post by John Green » Sun 20 Mar, 2011 6:51 pm

I have a set of round steel sections that fit into the jacking points to use on "Concours" cars. Insert to jacking point and then left using trolly jack. Do not even think about this if the car is even a little bit rusty. Learnt this trick after a visit to the MB Classic center many years ago.
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Re: Trolley jack lifting points

Post by John Green » Mon 21 Mar, 2011 12:53 pm

took me awhile, but I found the picture..
Germany&Hotrod 173-1.jpg
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Mercmad
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Re: Trolley jack lifting points

Post by Mercmad » Mon 21 Mar, 2011 4:17 pm

Mercedes used to sell those pegs to fit onto the jack points . They usually fit on top of axle stands .
I have the part number somewhere and mate in the US has had some made to fit his 600.

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Re: Trolley jack lifting points

Post by W108-1967 250S » Sun 27 Mar, 2011 10:25 pm

Yes I've always lifted on the front suspension X member, and under the diff. I always use a piece of wood to spread the load and as a anti "rash" cushion. Glued some rubber mat on my axle stands to avoid "rash". When working on my 108 recently, stood her on the lower chassis horns inboard of the sills, using wood to spread the load. Yes be very careful under a car, your Merc wouldn't hesitate to "crush you with love"!!

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Re: Trolley jack lifting points

Post by Kiwi108 » Fri 01 Apr, 2011 9:41 pm

Mercmad wrote:In the rear,either under the diff center...
This really isn't a good place to try and lift a swing-axle car. The diff center 'hangs' from a single rubber mount in the boot and lifting here will just push against and possibly through the rubber block ripping it and thus wrecking it.
It is only designed to hold the weight of the diff not to lift the car.
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Re: Trolley jack lifting points

Post by Dweezil » Sat 02 Apr, 2011 12:11 pm

Hi Darryl,

that being said, where do you recommend I use for the rear lifting?

Ta

Dweezil

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Re: Trolley jack lifting points

Post by Kiwi108 » Sat 02 Apr, 2011 6:43 pm

HI Dweezil, I usually jack up mine under the trailing arms close to the axle. this will compress the suspension but you can lift the rear high enough to get an axle stand under the corner of the body close to the rear jacking point. I always slip a block of wood between the stand and the car to protect the body and spread the load a liitle never had any problems doing it this way.
Darryl from Kiwiland

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Re: Trolley jack lifting points

Post by drew56cus » Sun 03 Apr, 2011 5:55 am

Hmmm, I have lifted every car for the last 6 years under the swing axle and have had no problems with the rubber mount. There is a big flat edge on the 'rhino horn' that goes up into the mount, I wonder if that pushes against metal?
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Mercmad
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Re: Trolley jack lifting points

Post by Mercmad » Sun 03 Apr, 2011 2:17 pm

Drew is right,I have been lifting W108's like that since 1973 when I got the first one. if the rubber rips,it was shot to begin with and the side strut stops it dropping anyway. :happy3:

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Re: Trolley jack lifting points

Post by W108-1967 250S » Sun 03 Apr, 2011 2:29 pm

Interesting point about the diff mounting. Have to agree it is designed to hang the diff....I have lifted on the diff, but have always used axle stand out on the swing arms if any time was to be spent in the "air". Think I will avoid the diff in future.

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Re: Trolley jack lifting points

Post by Mercmad » Sun 03 Apr, 2011 3:30 pm

Well,I couldn't ever count how many I lifted this way,and the factory workshop manual has plenty of shots showing it being done . They even had a fixture for the shop jack which lifts a swing axle car under there . The diff is hanging on that rubber but when the load is applied it is supporting the body too. So when you lift it with a jack you are not lifting against anything different. The only thing that needs to be watched is the jack is under the left side and secure. It will slide off if you lift on the right .

In nearly 40 years of working on Cars the only one I ever saw fail was one that had the diff lock up at over 100 MPH and it tore the rubber from the floor as the axle rolled up. We ended owning that car and in 1976 it had already over 200,000 miles on it.
You can also get a heavy version designed just for the 6.3 . Pontons have a similar strut design but the rubbers are two large blocks,one on top and one on the bottom and no way would those ever fail because they were lifted up against the car.

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Re: Trolley jack lifting points

Post by ADow » Mon 11 Apr, 2011 12:10 pm

This is a slight detour from the thread but I don't jack my Benzs at all but use metal ramps for anything under the car that does not require unweighting the wheels. They are cheap, quick and will prevent you from being hugged to death, but the car has to be a goer to mount the ramp.
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Re: Trolley jack lifting points

Post by lintonxy » Thu 14 Jul, 2011 5:56 pm

Rightio, I've read through this thread and am more confused than when I started :dontknow: Some say jack under the diff and some say don't. I hear merit in both arguments but no definitive reason that dictates an exact answer. No offence intended to any of the posters above but I am always wary of the argument 'I've always done it this way' as many people have died (not just under cars) doing things way 'they've always done it'.

So far I've had my 108 up on stands once. I jacked it under the diff, following the rules a manual I have. That said it was one of those generic Haynes-style manual that also states lines like "All of the power steering components are complicated and are best taken to a Specialist"! :wall:

I'm wary of trying jack from the factory jacking points with my trolley jack. I'd much rather lift the car up flat and put the stands in the correct spots.

Does anyone else have anything to add to this thread?
Linton

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Mercmad
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Re: Trolley jack lifting points

Post by Mercmad » Thu 14 Jul, 2011 7:18 pm

If you mean "where do i support it?" ,at the rear,in board of the jack points there is flat area. That is reinforced and will support the cars weight.
At the Front place the axle stands under the lower Control (A) arms of the front suspension. Dont allow the front end to hang on the front axle mount bush .
You can buy proper manuals for W108's for the mercedes classic center in Irvine, California on CD. They are around $28 USD. Most of those Chiltons things were simply pages taken from Manuals and I have one here which has a section on doing valves...in a chev V8!!.

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Re: Trolley jack lifting points

Post by stig0000 » Thu 14 Jul, 2011 7:24 pm

b4 i read this,, :think:

my car was lifted on a 2 poster and we just put the pads underthe seals were the jack points are, when it took the waght there was no creaking or craking, was up there for about 4-5 days geting work done, oh well, :violent1:
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Re: Trolley jack lifting points

Post by Mercmad » Thu 14 Jul, 2011 7:32 pm

Thats how a lot of W108's and W109s have buggered up sills . the pic taken from the shop manual shows where the rear lift points are and the front. I dont know how many W108's i have been under and seen things like crushed sills,bent floors etc all caused by holden mechanics with no clues lifting in the wrong place. You'll notice that the front arms are under the inner chassis rails. It's not a good place to lift because the weight is then on the rubber mount bushes and will tear them. You know it has been done when the car thumps,in front, over bumps .
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Re: Trolley jack lifting points

Post by gwunta » Sun 17 Jul, 2011 5:11 pm

Yep, I agree with Mercmad. Never under the sills. Ive had my 108, 109, my parts car (108) and a mates car (108) up and down with a trolley jack that many times Ive lost count. Every time I do it, its from the same points - Under the cetnre of the diff for the rear and under the front crossmember for the front. Ive never had any issues with any of the cars from jacking them up in this way. When my 108 has gone a car hoist its always been as per Mercmad's picutre above.
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Re: Trolley jack lifting points

Post by ANF » Wed 18 Sep, 2013 12:54 pm

Just had a rather bad experience trying to get my new 250S inspected for rego. Guy positioned hoist pads under the sills. I was trying to tell him to position them as per Ron's pic above.
This infuriated him and he told me to leave! Inspection was over! I was not being rude, just trying to tell him the best spot to lift them...... Bit of a shock!
Shows his level of professionalism!!

I will try again, elsewhere......

Cheers

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Re: Trolley jack lifting points

Post by dynamike » Mon 22 Jan, 2018 6:36 pm

Following on from above tips a photo of a 220sb on four stands.
20180121_091017.jpg
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