Stock Brake Proportioning Valve Adjustment? (1 Viewer)

[jralph125]

Hey Guys,
I have read through a bunch of threads on this topic but can't seem to find the simple answer. I have a 79 FJ40 with front discs and drum rear, recently I have been noticing when I have to lay into the brakes the rear drums lock up pretty easily. I know there is a stock proportioning valve mounted underneath the rear of the master. My question is, is that valve adjustable? if so what direction reduces and what direction increases? If not, does someone have a suggestion on a quality aftermarket adjustable valve? I have been looking at this one from Russel if it needs to be replaced and upgraded.
Add-on Brake Proportioning Valve - JTOutfitters
Thank you in advance

 

[gcrump01]

Try this. Good reviews from what I've seen.

Adjustable Brake Proportioning Valve for Toyota Brake Lines - Fits FJ40

 

[Fast Eddy]

IMO, if it is a recent phenomenon, you should disassemble it and clean it out. It's probably just rusty. Nothing is ever going to be as clean as the original, IMO.

This thread has some photos and seems to indicate that you can fix your issue:

Proportioning Valve photos Disassembled

Google is your friend. Add "site:ih8mud.com" after any search.

 

[jralph125]

Try this. Good reviews from what I've seen.

Adjustable Brake Proportioning Valve for Toyota Brake Lines - Fits FJ40

THANK YOU, so I take it the stock one is not adjustable?