Adjustable spring plates adjustment...

[fallingoffalot]

I am going to have to raise my van a bit, I didn't realise until the other day that putting 6 bags of cement in would make the exhaust hit the speed bump in my road!!

Anyway I was looking at them yesterday, what sort of adjustment in terms of overall height can I get with the grub screws? They are about half way at the moment ( I suspect I may have to turn it on the splines).

 

[lemur]

I think you'll be surprised by how much a small adjustment on the plates translates into actual ride height, my advice would go a little, have a blast about for fun so everything settles and see what you think... you can always readjust

Liam

 

[fallingoffalot]

Ok thanks, if only the front was that simple!

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[fallingoffalot]

Wow, yes that's about a 2.5" height increase for a 5mm adjustment! Right now how the heck do you do the front!

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[67panel]

What style/make are the front adjusters? What ever if you look from left hand side rotate clockwise too higher.

 

[fallingoffalot]

Here it is, it's quite new <1 year old. It's got IGS, ICS or something like that embossed on the far side. Anyway I'll probably have a go this week some time, if I can't get it to move I'll have to wait until my mechanic is back.

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[fallingoffalot]

I found this article, which is the kind on info I was looking for...
https://www.ssvc.org.uk/phpbb/viewtopic.php?t=107660

 

[fallingoffalot]

One more question before I start, why are the 2 adjusters at different positions? I would have thought that they should be at the same position.

 

[Moseley]

I think you’re going to have issues trying to raise it. The adjusters should be two notches apart, but the upper one is as far raised as it can go (by the looks of it) without fouling the gear shift.

You could rotate the adjuster to raise the suspension on the lower tube, but it is going to be even further away from the setting on the top tube. This will mean you have lots of preload on the lower arms, but very little on the top so the suspension will be a lot softer, but might have some odd characteristics when on bumpy roads - the springs would be fighting each other as the suspension lengthens.

I think you’ll need to create some more clearance between shift rod and top adjusters before tackling moving them. CSP do an off-the-shelf notched adjuster which might be the answer.


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[fallingoffalot]

I found a picture of the adjusters before it was recently lowered by an inch or so, I took it from the other side and I wasn't really taking it of the adjusters, but I think the top one is slightly closer to the shift rod. Not 100% sure. Thanks for the info though, there always seems to be more to it!!

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[fallingoffalot]

That's annoying [emoji34]. On stands, wheels off, jacked suspension up a bit under shock mount. Loosened up serrated bracket, loosened grub screw. Nothing no movement, dispute moving the arms up and down. I can see the end of the leaf springs turning, but the adjuster is not. I didn't get as far as the top one as I imagine that'll be the same. Any ideas anyone?

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[sparkywig]

The trailing arms need to be pulled down to raise the height, not supported, if you undo the shock and leave the wheels on their weight can help slightly.
But sometimes you have to separate the trailing arms by removing the spindles to get the adjusters to move.

It's much easier to lower the suspension height rather than raising it, because you can use the weight of the bus.

When was the last time you greased the beam? Having a beam full of fresh grease can sometimes help as well.

 

[fallingoffalot]

OK thanks, I was only putting the jack under the shock to try and make sure there was no load on it before I released the grub screw. The beam is a year old and it was lowered slightly more whilst it was last in the garage having some other stuff done, so about 3 months ago. Issue is that a few weeks ago I went over a big dip in the road at speed, probably about 50mph, and it rubbed on the side of the arch slightly, well enough to take the paint down to metal. I may have another go tomorrow (or wait until monday and see if my mechanic is back from lockdown).

Picture shows where it rubbed.

 

[sparkywig]

That's not where the tyre normally rubs, it's usually under the seat tub.

I've just had a look at mine, there's no way my tyres can rub on the rear of the arch.

 

[fallingoffalot]

Yeah that did concern me a little, when I heard the rub I looked for it when I got home, but couldn't see anything as I was looking at the seat tub, it wasn't until I was poking about today that I noticed this. Looking at mine now it doesn't look like it would rub there, but obviously it did.

I could have been going round a corner?

 

[fallingoffalot]

Got it raised today. My mechanic said it was a bit of a bitch!

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