Brake proportioning valve replacement (and lines leading to...)

Ahhh, that's on the special "NewEnglander" menu... Extra, EXTRA crispy!

Took 13 hours to replace 18' of hard line and one hose. Ugh. Still need to replace the rear drum cylinders and hard lines on the axle. But, that's a task for later...

 

Old thread - but this info helped me out a lot. Just wanted to thank all you guys for sharing your solutions to this problem. Mine started leaking so I eliminated it.

When finished, I used a power bleeder to bleed the system but I did not like the master cylinder adapter that Motive Power makes. Have any of you guys ever made an adapter out of a Toyota MC cap? (Maybe I should start a new thread for this)

 

I'm about to tackle this job myself. It was also very very helpful! Thank you.

 

Greatthree, been wanting to do this for a while, and now I have all the info I need down to the fitting sizes.

 

You guys are a great help, learning some good stuff here.

I use my '03 Tacoma 4WD V6 Xtra cab daily. I'm at 225Kmi and it's just running great. I drive like granny so my brakes are still in great shape after 80Kmi. I'm looking to install some Air Lift ride controls (Kit No. 59537) on the rear, I don't need them often and will never have more than 500lbs in the bed, never tow anything. But a couple times a year I do a 6,000mi trip thru Yellowstone and have to load up with all my camping gear and camera equipment. The load isn't drastic, and all the heavy stuff goes in first and is placed evenly. This pitches the front end up noticeably and thought this might be more than enough to level the ride.

Instructions for this mention the rear brake proportioning valve and state this - IMPORTANT: Your vehicle may be equipped with a rear brake proportioning valve. Any type of load assist product could affect brake performance. We recommend that you check with your dealer before installing this type of product. If your vehicle DOES NOT have a rear brake proportioning valve or is equipped with an antilock type brake system, installation of a load assist product will have NO EFFECT ON BRAKE SYSTEM PERFORMANCE.

Is there a way around this? Can I just install standard air shocks instead? Like I said, very rarely do I load up the bed.

Any help would be most awesome, Thanks

 

The lower the rear of the truck drops the more brake fluid is allowed to the rear brakes

If your worried about raising the suspension figure out how high it needs to be to sit level loaded .

Make a extension for the LSPV so it sits in the same position as when loaded

Since I deal with older Trucks I have yet to have a LSPV that still worked .

If indeed your springs are in good shape I can`t see 500 pounds making a drastic change causing that much drop in the rear of the truck .

 

Thanks Wyoming09, I may put a bit more than 500lbs in the bed, not much more that that though, but it does sit low at that point.

I'll look up LSVP extension.

 

Unless it’s an actual hydraulic fitting bought from a hydraulic shop, not one of those crappy brass ones....

 

You can install a manual valve

https://forum.ih8mud.com/threads/wr...-install-a-manual-proportioning-valve.782430/

 

It is a state by state issue maybe here Compression fittings would be an automatic failure .

If you can use them up there it works for you