Jake Brake Problem

[Leroy Eckert]

Don't know Greg. I know they are in the engine compartment but have never tracked them down..I have several auto reset breakers back there. I also know my Royale is different than others. Maybe those Prevost converters knew something.????? Leroy Eckert 1990 WB-40 Smoke N Mirrors Royale Conversion --- On Thu, 9/18/08, Gregory OConnor wrote: From: Gregory OConnor Subject: [WanderlodgeForum] Re: Jake Brake Problem To: WanderlodgeForum@yahoogroups.com Date: Thursday, September 18, 2008, 12:55 AM If its a prob with the computer this guy has the answer. he lists a land line. lot of good info on his site. I sent him several computers to reprogram http://www.heavydut ypowertrain. com/detroitecms. htm I wonder if the two power sources for the ddec are the right two fuse/breakers behind the rear bumper?? the left is the ign switch and bulk oil switch greg --- In "WanderlodgeForum%40yahoogroups.com", Leroy Eckert wrote: > > One other thing I forgot. It has been a year since I studied my set up so I am going from memory. I specifically remember that my coach has two main DDEC power sources spliced somewhere near the DDEC control unit and two separate grounds. This set up presumably as a fail safe in case one of two fuses or relays on the power side malfunctions, and/or a bad ground in one location either of which prevents an engine shut down because the DDEC cannot think.(no power, no ground) I do not know if BB did this or Royale when they converted my coach. Hope this helps. > Leroy Eckert > 1990 WB-40 Smoke N Mirrors > Dahlonega, GA > Royale Conversion > > --- On Wed, 9/17/08, Johnny M Slone wrote: > From: Johnny M Slone > Subject: [WanderlodgeForum] Re: Jake Brake Problem > To: "WanderlodgeForum%40yahoogroups.com" > Date: Wednesday, September 17, 2008, 10:07 PM > > > > > > > > > > > > Thanks for the replies. I have been searching for a schematic that > > shows how the Allison WTEC and DDEC III are wired and what should be > > on each lead. I have a BB drawing that shows the control switches and > > relays. I have tested as best I could these circuits and I'm > > satisfied that this part is doig what it should. There appears to be > > a lead > > (engine brake enable) from the WTEC to a VIM. I suspect this is a > > relay. This enable lead opens when all conditions are satisfied for > > the jake to work. This circuit contols the engine brake disable lead > > to the DDEC III. Is anyone familiar with this circuit and know where > > to look for it. I may be on a wild goose chase. > > > > When the jake brake is working its not real loud inside the coach. > > Here in the mountians you definately know when it isn't. Going down a > > 6% grade for about a mile without a jake or a retarder will get your > > attention. > > > > Thanks again. > > > > Johnny M Slone > > Pikeville, Ky > > 98 LXI >