Load Compensator Valve - Pick up 2005

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Load Compensator Valve - Pick up 2005

Post by g149 on Tue Apr 25, 2017 6:16 pm

Does anyone have a Load Compensator Valve (brakes) for Diahatsu Hijet Pickup 2005? Or does anyone have a photo of one or know if its the same part for both the pick up and van?  Thanks.

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Re: Load Compensator Valve - Pick up 2005

Post by Woodie on Tue Apr 25, 2017 7:03 pm

Hello Gee. Yes the Load Sensing Valve is the same for both van and pickup. How do you know that yours is not working is the first question. Second is: where in the UK are you? Always helps to know what area new members are in as you may have someone near to you who may be able to help you - or avoid you as the case may be. Rolling Eyes
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Re: Load Compensator Valve - Pick up 2005

Post by g149 on Tue Apr 25, 2017 7:23 pm

Thanks for prompt reply Woodie.  It's failed MOT and garage have told me the valve is seized and not giving braking to rear wheels, only to the front. So seriously fail!  I'm helping them to find parts.  I'm in Norwich.

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Re: Load Compensator Valve - Pick up 2005

Post by Woodie on Tue Apr 25, 2017 7:42 pm

Hard things to come by.. Some members have done away with the valve and put in a T piece I believe. OK if it is a van and you are carrying a bit of weight in the van.
Being a Pickup its a bit more awkward to have a bit of weight over the back wheels.
I have in the past dismantled the valve and cleaned it successfully.

There is only a small amount of movement on the piston literally a few millimetres. Might be worth trying to get it " unglued" before looking for another one. I don't think that I have any to spare. Have a couple more Hi-Jets to strip, but they have been standing for some time and probably stuck too.
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Re: Load Compensator Valve - Pick up 2005

Post by g149 on Tue Apr 25, 2017 8:19 pm

Thanks again Woodie.  My pick up (a Romahome Camper) is identical to yours. So there is a constant weight over the back wheels.  Would this then help?

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Re: Load Compensator Valve - Pick up 2005

Post by Woodie on Tue Apr 25, 2017 10:32 pm

I am not telling you what to do one way or another. I have just related what I have done and what other members have done.

If you think about it logically, with your Romahome body on the back will be sat down quite a bit and so the Load Sensing Valve will be in fully open position anyway. Talk with your garage. See what conclusion they come to if you put it to them the way I have put it to you. They are the ones you are paying to get it through the Mot.
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Re: Load Compensator Valve - Pick up 2005

Post by PFM on Wed Apr 26, 2017 7:59 am

HJ used to strip and unseize these, and I found these pics he took when looking for something else the other day.




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Re: Load Compensator Valve - Pick up 2005

Post by Woodie on Wed Apr 26, 2017 8:19 am

Well done Inspector PFM. Nice bit of Detective work there. We certainly miss Matt's massive input to this site.
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Re: Load Compensator Valve - Pick up 2005

Post by Logi on Wed Apr 26, 2017 9:18 am

MOT test reason for rejection;

Evidence that a load sensing valve has been removed or disconnected from a vehicle where it is known to have been fitted as standard.


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Re: Load Compensator Valve - Pick up 2005

Post by Woodie on Wed Apr 26, 2017 6:19 pm

Right, well that puts that to bed then.
Wouldn't like to have to buy a new one.
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Re: Load Compensator Valve - Pick up 2005

Post by PFM on Wed Apr 26, 2017 6:32 pm

Yes, because every MOT tester in the land will know these should have them fitted, won't they...?

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Re: Load Compensator Valve - Pick up 2005

Post by Logi on Wed Apr 26, 2017 6:46 pm

Maybe they won't realise that commercial vehicles have load sensing valves? Maybe. . . . . . . ?
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Re: Load Compensator Valve - Pick up 2005

Post by chinfuk on Tue May 02, 2017 11:02 am

Mine failed for the same reason. After copying and pasting some of highly jetted advice and sending it to my mechanic mate we realised it was probably a weak spring. The was a little panel that that moved up and down that was connected to the spring that we zip clipped up to stop it moving. It passed the test fine, although they didn't actually look under there to see what we had done. The figures on the rolling road was all I needed to get the certificate.

Once again thanks to highly jetted for saving me. I really owe you a few pints
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Re: Load Compensator Valve - Pick up 2005

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