General Boards > Technical Support
Pac Brake not moving
Richard And Babs Ames:
You may want to lubricate the plunger shaft as the WD40 is more of a drying and cleaning agent and not a lubricant. Pac Brake should have a reccomendation. Sounds like a great price for the rotors.
Larry and Heidi Lee:
Hey Richard, Pac Brake does advise lubrication on the cylinder mechanism but the part that stuck was the electric air switch solenoid that feeds air to the cylinder. This electrical DC part should not be lubricated in my opinion. The original owners of this coach were from Florida and I found what appeared to be white salt deposits on the switch shaft probably from sitting and lack of use.
Richard And Babs Ames:
HilarLee I have seen a special high temperature lubricant reccomendation for the cylinder if one is used as the the wrong lubrication may do more harm than good.
David Rudisill:
--- Quote from: ]Hi Joel and fellow Beaver's, thanks for your responses. The "exhaust brake" light does illuminate when the switch is toggled so I suspect a mechanical failure of some sort.[/quote ---Our Pacbrake failed recently. Same symptoms: the "exhaust brake" light illuminates, but the brake does not engage. Cummins in Medford, OR took it apart and found that the butterfly rod was bent and there was soot jamming it. They cleaned it up and straightened the rod, but it failed again after it got hot.
BTW, an easy way to tell whether it is working is to watch the turbo boost on your Aladdin system. When the Pacbrake engages, the boost will drop to 0.0-0.3. If you don't see that drop, it isn't working.
I called Pacbrake. They gave had me read the number off the tag on the brake, then gave me the part number for the new (PRXB) brake for our engine. They said that list price is $769.60, and they gave me contact information for several retailers in the area. Here are the prices I got:
Cummins in Medford: "about $1,500"
Freightliner in Redding, CA: $876
J & H Performance Diesel in Redding: $770
Henderson's Line-up in Grants Pass, OR: $710
CLF Warehouse in West Sacramento, CA: $615.68
CLF had it dropped shipped from Pacbrake's Seattle warehouse on Friday, and it arrived here in Dunsmuir CA on Tuesday. Shipping was $9.50. OTOH, sales tax was over $50.
I have an appointment at a local truck repair shop to have it installed this afternoon. It should take well under an hour.
Hope that helps.
--
Dave Rudisill
2004 Monterey (Cummins 350)
--- End quote ---
Richard And Babs Ames:
David, Please let us know if can tell the "higher preformance" PXBR is better than the old one.
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