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Adjusting Jimny brake proportioning valve

Tech Talk for Suzuki owners.

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Posts: 5226
Joined: Sun Jul 27, 2003 2:03 pm
Location: Sydney

Adjusting Jimny brake proportioning valve

Post by Squik »

Yes, I've searched and all I get is 3000 odd suggestions on other stuff...

I need to adjust it for a 40mm lift (or do I?) - how do I do this? Pics would be appreciated :D

Ta!
DRS smells like a cat-food milkshake... and wet socks... and gorgonzola cheese... all whizzed up in a blender
Posts: 158
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Post by ROK88 »

what is the reason for this wierd contraption
JIMNY EXTREME ON LUX DIFFS
http://www.outerlimits4x4.com/ftopic185229.php
It's a JIMNY thing! (We don't care if you can't understand)
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Joined: Tue Oct 10, 2006 12:25 pm
Location: bris

Post by fordy1 »

pm zuk nutter on auszookers as he adjust's his from in the cab while driving!!
www.outdoorauto.com.au - we love doing new GVs....
Posts: 158
Joined: Sat Nov 18, 2006 10:16 pm
Location: Gold Coast

Post by ROK88 »

sounds cool just read what they are for
JIMNY EXTREME ON LUX DIFFS
http://www.outerlimits4x4.com/ftopic185229.php
It's a JIMNY thing! (We don't care if you can't understand)
Posts: 5226
Joined: Sun Jul 27, 2003 2:03 pm
Location: Sydney

Post by Squik »

See below:

I've just found out that for up to a 50mm suspension lift, you can just adjust them as per the info below.
After that, you need a spacer to bolt between the bracket on the diff and the 'keeper plate' that anchors the bottom of the spring.

Dimensions for this spacer (metal block) are: 40mm x 50mm x required height (2/3 of the suspension height - ei: 40mm for 60mm suspension lift). Hole needs to be drilled 20mm at centre from the 40mm wide edge.
Unsure of the bolt diameter (stuffed back stopped me from measuring that) and of course you will need a longer bolt.

The aim is to keep the spring horizontal and tensioned to the correct length mentioned.

Image

Image
DRS smells like a cat-food milkshake... and wet socks... and gorgonzola cheese... all whizzed up in a blender
Posts: 158
Joined: Sat Nov 18, 2006 10:16 pm
Location: Gold Coast

Post by ROK88 »

Good bit of info their squirk should probably check mine
JIMNY EXTREME ON LUX DIFFS
http://www.outerlimits4x4.com/ftopic185229.php
It's a JIMNY thing! (We don't care if you can't understand)
Posts: 5226
Joined: Sun Jul 27, 2003 2:03 pm
Location: Sydney

Post by Squik »

ROK88 wrote:Good bit of info their squirk should probably check mine
I'm a Squirk... :D - I like that :D

Yup, now I know why when we first lifted Stimpy up 100mm that he used to lock up and I would end up face planted on the windcsreen, surrounded by the contents of the parcel area... until someone at the workshop said "Yup, know what that is" tweaked something in Stimpy's rear end and walked away...now I now what it was :D

I've adjusted Stumpy's now and he is heaps better :armsup:
Last edited by Squik on Sun Aug 30, 2009 12:11 pm, edited 1 time in total.
DRS smells like a cat-food milkshake... and wet socks... and gorgonzola cheese... all whizzed up in a blender
Posts: 12
Joined: Wed Aug 26, 2009 8:05 pm
Location: Brisbane

Post by zukenutter »

Actually there's more to this. Luckily I have a stock Jimny as well to compare with. Without an extension bracket the valve will actually be operated in reverse. When you are carrying a load it is meant to send more braking force to the rear, and when unloaded more force to the front.

For it to continue to work properly you would need to extend the bracket by the same amount as your lift. It works differently to what you'd imagine and was not until I compared to stock vehicle that it made sense. I also used the same diagram that squik uploaded. Great info, very handy.
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