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08-10-2007, 06:25 PM
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#1 |
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Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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Bad Prop Valve???
Do I possibly have a bad prop valve, or am I barking up the wrong tree?
I just installed my disc brake conversion kit. All fittings seem good & tight. I bled the MC & at all 4 wheels. My brakes seem perfect for the first dozen or so stops... but then the light comes on & it feels funny. Here's the weird thing that makes me question the prop valve. The fluid level of fluid in the back chamber of the M.C. goes down, the fluid level up front goes up!?. The MC is new & for a 71 C-10. The prop valve I think is from a 71-72 3/4 or 1 ton. I made new lines from the MC to the prop valve. Front resorvoir to the front & back to back, normal for a C-10. Does this sound like a bad prop valve? Other suggestions?
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85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days!  05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal! 
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08-10-2007, 06:51 PM
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#2 |
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Junior Member
 Join Date: Dec 2006
Location: Florida, Myakka River
Posts: 143
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Re: Bad Prop Valve???
I think your prop valve has the squirts.
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'63 C10 lwb flatbed '66 C10 lwb stepside '68 C10 lwb stepside (parts) '68 C10 lwb fleetside (17 yr old son's ongoing project) '03 HUMMER H2 (wife's) '06 3500 flatbed liftgate (My work truck) |
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08-10-2007, 07:39 PM
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#3 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Bad Prop Valve???
i'd suspect the master cylinder before the combination valve// did you try centering the pin to make the light go out? better yet did you clamp and center the pin when bleeding the brakes?
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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08-12-2007, 10:32 PM
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#4 |
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Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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Re: Bad Prop Valve???
I did not clamp & center the pin. How much force should it take to push the pin in?
I pushed against it pretty hard & it didnt' budge a bit.
__________________
85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal!
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