I'm back with more brake questions - Page 3 - JeepForum.com
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post #31 of 31 Old 10-16-2020, 04:29 PM
bgredjeep
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1987 YJ Wrangler 
 
Join Date: May 2005
Location: Augusta, GA
Posts: 3,276
I looked up the manual this morning. Increase should mean increase pressure. I pasted the adjustment info below (sounds like you've seen it) . The first step sounds like they start as weak as they'll go, then slowly increase from there. With the trouble you're having I'd max out until you get something to happen. Lol

Also, I'll be at river rock tomorrow if that's where you are going.

Proportioning Valve Adjustment:The proportioning valve is used to adjust the rate of increase in rear brake line pressure, relative and proportionate to theincrease in front brake line pressure. For safety and performance, the rear brakes should never lock before the front brakes. Otherwise, an out of control situationcould occur.

1.Begin with the valve in the full proportioned (least pressure) position by turning the knob all the way out (counter-clockwise rotation).
2.In a safe location, make several hard stops from 30 MPH observing the function of the rear brakes. If the rear brakes do notlock up before the front, graduallyincrease the rear line pressure by rotating the valve clockwise (two turns each time).
3.Continue these adjustments until the maximum amount of rear brake pressure can be achieved, and no wheel rear lock is observed.
4.Test the vehicle again at 50 MPH and make any additional adjustments as needed.



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