jaypry

pac-brake sticks on, when I turn switch on the brake comes on quickly like normal. however when I turn switch off or add throttle the brake remains on, even under full throttle, except no power or boost, and egt rise pretty quick. I tried to see if the butterfly in the brake was sticking but it dosen't seem to. It moves freely. could this be the electric/vacuum switch not turning off?

thanks

rebal

solenoid is sticking,add a drop of oil in the air line forward and in back of the valve it should start working again use some pack brake lube on the butterfly also this should be a maintaince thing

Clayten

If they don't get used enough they can get stuck with soot.

jaypry

thanks for the help I found the problem .It was the vacuum valve it was a little bit sticky put a couple of drops of marvels mystery oil and it seems to work great thanks again. p.s. butterfly shaft was still very free no sticking at all. I oiled it with the superlube about 4 months ago.

Joe

Ed ke6bnl

this is a cut a paste answer to your problem I got off this site.


Dear Ed ke6bnl,

Harold-Pacbrake has just replied to a thread you have subscribed to entitled - Need help with Pacbrake Exhaust Brake on 99 Ram3500 - in the Performance and Accessories 2nd gen only forum of Dodge Diesel - Diesel Truck Resource Forums.

This thread is located at:
https://www.dieseltruckresource.com/...9&goto=newpost

Here is the message that has just been posted:
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Just pushing the reset button is not going to do alot for you the issue will more then likely reoccur follow the instructions below.

To properly clean the solenoid, remove the blade screws in both the top and bottom of the solenoid. From the coil end remove the white oval spacer and the o-ring (wipe clean with a rag) then working from the body end (opposite coil end), remove the o-ring, and the small spring and set a side. Now take the black plastic spacer and push it straight through the body of the solenoid to reveal the sleeve. Remove the 5 o-rings on the sleeve (it is easier to start in the center of the body and roll each o-ring over the other).

Pull the control valve out from the center of the sleeve soak both the control valve and the sleeve in mineral sprits for a few minutes (I found nail polish remover works real good). Then wipe the control valve dry. Twist a clean towel/rag and feed it through the sleeve and soak the rag and sleeve with the cleaner while turning the sleeve on the rag.

In order to check if the parts are cleaned properly place the control valve back in the sleeve they them horizontally between your index finger and thumb the sleeve should spin free (like a top toy) on the control valve. Reassemble the solenoid.

To help prevent frequent cleaning of the solenoid remove Pacbrake supplied brass filter from the solenoid insert a barbed fitting run a small hose up to the fire wall and install a universal style fuel filter. Of if you wash your engine down put a plastic bag over the solenoid so water doesn't enter the solenoid through the filter.
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