Jake Brake Problem

[Kurt Horvath]

The blue prints show 7 pin locations

Legend

Wire < Cannon Plug Location & Pin # < Wire Size & Color - Description


119 < ATEC A-9 < 18ga YELLOW - Engine brake on-off on-off-on
switch

132A < ATEC B-19 < 18ga WHITE - #30 on two C,Y relays to Cannon
Plug

583 < ENG B-22 < 18ga. LT. BLUE/BLACK - #87A on C,Y relays

979 < ENG B-21 < 18ga WHITE -

231 < ATEC B-13 < 18ga. Yellow - #86 on Ignition Relay, also ties
into a Neutral Safety Relay

768 < CHAS B-20 < 14ga. PURPLE - Neutral Safety Relay

714 < CHAS B-4 < 14ga. PURPLE - Neutral Safety Relay

It looks like we'll have to check 4 different plugs.

Better check them all.

ATEC- A
ATEC- B
ENG.- B
CHAS - B

Looks straight forwards enough.

Kurt Horvath
95 PT-42
10AC

P.S. Thanks for the B.P. Wallace



--- In WanderlodgeForum@yahoogroups.com, "Kurt Horvath"
wrote:
>
> Johnny,
>
> Look at this post, Oslo Switch-rocker switch-dashboard on the
W.O.G.
> Forum. This explains a lot and would be good to check all the
Cannon
> Plugs for P.M. Leroy is on the right track, the Cannon Plugs sound
> like the weak link in this sysytem. I have some blueprints and will
> get them out tonight and let you know what I find in the AM.
>
> Kurt Horvath
> 95 PT-42
> 10AC
>
>
> --- In WanderlodgeForum@yahoogroups.com, Leroy Eckert
> wrote:
> >
> > I cannot help you specifically with your coach. I am posting to
> suggest that if you have a master print of your coach, a huge
> blueprint which shows the overall 12v electrical plan for the
running
> gear; it should have harness pin identifiers, mine are lettered,
and
> with some time spent you should be able to formulate a picture of
how
> it is wired. I did it on my coach for the DDECII, the ATEC, and the
> DDL including how they interface. For instance pin A on the main
> harness may have A1 A2 and A3 and may tie up to another harness
with
> different letters or numbers or any combination thereof. You have
to
> study it closely, but once you get it down it is relatively simple.
> > 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@yahoogroups.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
> >
>