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Adjusting Jimny brake proportioning valve
Posted: Sun Jul 26, 2009 6:37 pm
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
Ta!
Posted: Mon Jul 27, 2009 5:56 pm
by ROK88
what is the reason for this wierd contraption
Posted: Mon Jul 27, 2009 6:05 pm
by fordy1
pm zuk nutter on auszookers as he adjust's his from in the cab while driving!!
Posted: Mon Jul 27, 2009 6:15 pm
by ROK88
sounds cool just read what they are for
Posted: Tue Jul 28, 2009 8:03 am
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.
Posted: Tue Jul 28, 2009 4:20 pm
by ROK88
Good bit of info their squirk should probably check mine
Posted: Wed Jul 29, 2009 11:11 am
by Squik
ROK88 wrote:Good bit of info their squirk should probably check mine
I'm a Squirk...
- I like that
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
I've adjusted Stumpy's now and he is heaps better
Posted: Wed Aug 26, 2009 9:06 pm
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.