| Author |
Message |
Rory Braatvedt
Tinkerer
North Island
Soarer v8
Posts: 46
Reg: 06-2009
|
Hey guys, i'm trying to lower my UZZ31 but i found Peter's instructions on PlanetSoarer a little vague at times. I made a mark on the middle nut of the rod, then i undid the next nut up at the top, unscrewed it about 3mm down the thread. Then i undid the bottom nut too, however when i was unscrewing that the whole rod turned without my realising and it's all screwed up now. In the end i just tightened both nuts up as nothing much was visibly happening when i turned the middle nut.
Can someone please explain this part a little more directly for me? I'd greatly appreciate it. Cheers |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1913
Reg: 03-2007
|
Rory, the top and bottom nuts are lock nuts only!, just slacken them off and turn the rod using the welded nut in the middle, making the rod longer drops the height. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1914
Reg: 03-2007
|
Sorry i should say "make the rod shorter |
Tom Richards
Goo Roo
nsw
V8
Posts: 1016
Reg: 08-2005
|
it is very sensitive, maybe 1:10, IE changing the rod 1mm will change the height of the car ~10mm |
Rory Braatvedt
Tinkerer
North Island
Soarer v8
Posts: 47
Reg: 06-2009
|
Ohhh haha ok thanks for that Dave, it's a bit hard to see if the rod's getting shorter with each turn though, so i end up turning it a few times clockwise - don't see any change so went back the other way, then lost my original placing haha |
Rory Braatvedt
Tinkerer
North Island
Soarer v8
Posts: 49
Reg: 06-2009
|
SOLVED: The threads were confusing me. Basically, you turn the locknuts (both top and bottom) the OPPOSITE way to what you normally would think to undo them. If you use the same hand, you will essentially be turning both locknuts the same direction. Then, you turn the rod the opposite direction to the direction you turned the locknuts to lower the car.
Figured it out. All finished, looks good although not perfectly balanced. Thanks for help Dave |
Vincent Chan
TryHard
nsw
v8
Posts: 245
Reg: 12-2010
|
Rory. I am still confuse.
1.) Do yourn turn the top nut clockwise or anticlockwise to loosen.
2.) Do you turn the bottom nut clockwise or anticlockwise to loosen.
3.) If you turn the rod clockwise will it lengthen or shorten?
Thanks |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1915
Reg: 03-2007
|
Vincent , undo top nut 2 or three ITS A LOCK NUT only, undo bottom nut 2 or 3 turns ITS A LOCK NUT only
now turn the welded middle one ...one way will make rod longer other way will make it shorter, this is because they are left and right hand threads . |
Rory Braatvedt
Tinkerer
North Island
Soarer v8
Posts: 51
Reg: 06-2009
|
@Vincent:
It's very confusing to explain. To undo the locknuts, turn them the opposite way to what you normally would - remember lefty loosey? If you figure out what way you would turn it to loosen it following 'lefty loosey' then turn it the OTHER way.
Then, once those locknuts have been loosened and are a couple of mm down the thread, turn the middle nut on the rod the OPPOSITE way to the way you just turned the locknuts to effectively scew the rod in and lower the car. You will know when you'r doing it right because it will close the gap between the thread of the rod and the locknuts that you loosened a couple of mm down the threads.
Make sense? I should have taken a short video. |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 52
Reg: 11-2010
|
OK....this Height Sensor adjustment only alters how much the airbag pumps up?....there is no other mechanical way that the suspension could be 'locked' in a fully extended position ? Mine is very high and has been since I've had it 18 months and has never been any lower |
Vincent Chan
TryHard
nsw
v8
Posts: 246
Reg: 12-2010
|
Thanks guys. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1919
Reg: 03-2007
|
Greg ,the height sensor also lets air out to drop the car. |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 53
Reg: 11-2010
|
Dave, so air is the only thing that holds it in the highest position, there is no mechanical means? Mine has been in a 'high' position since I've had it so I'm assuming that the actual airbags must be in good condition, holding pressure, as I never hear an air pump working?
Do the height sensors go out of 'whack' over time or would something have happened to mine to be in the high position? Any info is appreciated |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1922
Reg: 03-2007
|
Yes to first question, and yes sensors do play up as does the computor.Is it high front and rear? You could pull the air line off in the boot behind carpet to drop the car ,then see if it returns to same height!also bad switches (on gear change plate) can cause it to stay up. |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 54
Reg: 11-2010
|
dave, it is high equally front and back....is the air line in the boot below the 'off/on' switch on the side but behind the boot carpet/liner?
I recently replaced the height switch located on the gear shift console, had my fingers crossed that was the problem, which still could be correct as there is no guarantee the replacement switch was any good as I just picked it up from the wreckers however the TEMS switch does function now. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1924
Reg: 03-2007
|
Greg, its behind carpet that covers the tank r/h/s you cannot miss it just pull pipe off ,air will blast out car will drop(do not adjust safety valve) , also whats the gap between tyre and guard |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 55
Reg: 11-2010
|
Ok, I'll move the carpet and take the pipe off. I'm assuming that I don't touch the on/ off switch on LHS
The gap between tyre & guard is approx 100 to 120mm |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1926
Reg: 03-2007
|
yes, leave switch on,just pull carpet from the top as there are just 4 clips, once car is down and pipe reconnected start engine and touch the brakes a few times it seems to wake up the computer. |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 56
Reg: 11-2010
|
Dave, which bits do I disconnect? There does not appear to be one main air line? Would there be a pic on here somewhere, what is the correct part name so u can search for it |
Rory Braatvedt
Tinkerer
North Island
Soarer v8
Posts: 54
Reg: 06-2009
|
I feel the need to point out that Soarers are ridiculously high from stock on either setting, when you flick the high/low switch, hop out the car and wait up to 3-4 minutes and watch, it usually takes quite some time. |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 57
Reg: 11-2010
|
Rory, I wish there was something to watch....mine is stuck on high...has been since I got it.
I replaced the height switch on the gearshift console, but it is till the same.
I just need to work out what I have to disconnect in the boot as Dave Rose has suggested and see what happens then. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1928
Reg: 03-2007
|
Greg, just disconnect the one that goes to the r/h/s (they work as a pair) ,the back will go down, reconnect ,start engine ,touch brakes (saves you waiting for the comp to cut in> |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 58
Reg: 11-2010
|
Dave, ok I'll do that in the morning, where is the easiest access to do the same for the 2 x front ones?
Also do the little silver circlips just pull back to release the airline from the fitting? |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 1929
Reg: 03-2007
|
Yes clips release pipe , leave the fronts for now ,lets see how the back comes back up. |
Greg Wyllie
Tinkerer
NSW
V8 Limited
Posts: 60
Reg: 11-2010
|
Dave, disconnected air line, reconnected, started engine and it pumped right back up again. I didn't measure it prior however it looks exactly the same. The height switch still makes no change.
I'm assuming that the height sensor rods need adjusting? Is it usual that all four are out of whack together?
Or could it be something else? |
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