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First Gen Brake Proportioning Valve Repair


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Contributed by Prairiehammer.

 

In the write-up, Ed cautions that the "brass center pipe" should not be removed for fear of damage.

That part must be removed in order to clean and inspect the primary working part of the proportioning valve. There will be no damage done by removing the copper colored spindle. It simply slides into the bore of the proportioning valve. Attached to the spindle is a nitrile cup. This "rubber" cup is prone to damage or debris. Additionally, there is a constrictive port behind the cup that should be inspected and insured to be clear.

Attached are pertinent photos I have taken when I disassembled my proportioning valve.

[ATTACH=CONFIG]103059[/ATTACH][ATTACH=CONFIG]103060[/ATTACH][ATTACH=CONFIG]103061[/ATTACH][ATTACH=CONFIG]103062[/ATTACH][ATTACH=CONFIG]103063[/ATTACH]

IMG_0453 (Large).jpg

IMG_0454 (Large).jpg

Proportioning Valve Spool 1b.jpg

Proportioning valve spool 1a.jpg

proportioning piston correct with cup in cap.jpg

Edited by Freebird
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