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Old 01-29-2014, 12:55 PM   #15
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Originally Posted by t55watson View Post
I have a exhaust brake made by Jacob. Now tell me, do I have a jake brake?
I have the same brand. It is called an Exhaust Brake. Some are by Jacobs and some by PacBrake but they are both essentially an Air Operated Butterfly Valve.

I doubt it can be freed up in place. You will most likely have to remove the two clamps holding it in place, remove the valve and use a penetrating oil etc to try and free it up.
This can be a Can Of Worms as I found out. Getting the valve freed was the easy part. A few hours of squinting, tapping, heating and Bingo.
But, The rest of the Exhaust System was rusted out and ended up changing everything from the Turbo to the muffler. Including the Muffler.
My point is, as the Boy Scouts Motto "Be Prepared"

IMHO, the reason they seize up is from not being used frequently.

Dennis & Carol
Said so long to our DSDP. Coming Soon, 2019 Unity LTV CB - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird
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Old 01-29-2014, 01:03 PM   #16
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Ooh so right Dennis. Yes my system is pretty rusty being 13yrs old. Has a couple flex pipe patches on it now. So will most likely need to replace my system too. If I pull the pieces out take to a shop Im hoping they can make me a system I can install myself.

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Old 01-29-2014, 01:06 PM   #17
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Old 01-29-2014, 01:09 PM   #18
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Use this guide for correct lubrication of the PacBrake. See below.

I would second Diplomat Don's suggestion for the upgrade to the PRXB. I did a few years ago and I am very happy with the results. I am almost 37,000 lb's on the coach pulling another 11,000 lb's with the rolling garage behind me.

I want everything and anything available to me for slowing, stopping and controlling this rig.

Here is the link to the lubrication points. There are 6 points needing routine lubrication. Click on each letter for more help.


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Old 01-30-2014, 11:17 AM   #19
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Soak it daily with PB Blaster penetrant for several days before attempting to move the parts, It will help to loosen the rust and exhaust buildup. Once you have the parts operating, clean off the penetrant with alcohol, then apply Pacbrake high-temp lubricant. If you need to replace the unit, that website has a very good price for the newest model.

2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
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