brake question
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brake question
So I have a 70 camper special with factory disc/drum setup. It appears the booster is incorrect and was likely swapped at some point and a PO put in the drum/drum variant. It works but is kinda hard to push. Id like to get a dual diaphragm(54-73112) version or something like kind. My brake light is also on and I believe has been for quite some time, just unplugged(I just got the truck) leading me to believe the spool is stuck in the pressure differential valve one side or the other. Assuming that to be my case, are my options as follows.
1. Rebuild pressure differential valve and replace booster with 54-73112
2. Could I swap the booster/MC for this https://www.summitracing.com/parts/sum-760214 and dump the differential valve and metering valve for this proportional valve https://www.summitracing.com/parts/tff-2301na or the like.
3. I could also just replace the booster with the correct one and dump the differential valve and metering valve for this proportional valve https://www.summitracing.com/parts/tff-2301na but that's just a slightly cheaper version of 2.
Did I miss something. With 2 or 3 I assume I could just plum new lines to the fronts and tie back into the rear where the differential valve is now.
1. Rebuild pressure differential valve and replace booster with 54-73112
2. Could I swap the booster/MC for this https://www.summitracing.com/parts/sum-760214 and dump the differential valve and metering valve for this proportional valve https://www.summitracing.com/parts/tff-2301na or the like.
3. I could also just replace the booster with the correct one and dump the differential valve and metering valve for this proportional valve https://www.summitracing.com/parts/tff-2301na but that's just a slightly cheaper version of 2.
Did I miss something. With 2 or 3 I assume I could just plum new lines to the fronts and tie back into the rear where the differential valve is now.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
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From: Brentwood,CA
I nominate number 1 but I also eliminated the differential valve on mine and instead install an adjustable prop valve on the rear brake line. The booster is another issue, they don't exist! No one has had them in years, its down to a rebuild only service.
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Also, can I just tie the two wires together to the light(ive read they are anyway) and attach to a single feed like in the proportional block above. That way my light works how its supposed to on a modern vavlve?
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