Update on ZF trouble 87FC35

[one_dusty_hoot]

Alan,
A diesel engine doesn't need a lot to keep running.
There is an upright fuel shut-off solenoid at the
front of the engine near center. A little smaller
than a drink can. This get 12 v from the ignition
switch and allows the engine to have fuel.

The fuel pump at the tank gets 12V when the oil pressure
switch on the 3208 has oil pressure. There is an internal
an internal pump within the injector pump as well and may
be to pull the fuel from the tank. This is a mechanical pump.

With 12V on the solenoid, bump the starter, it should start.

NOW, not for the faint at heart. This is not safe at all and you
can be killed doing this so you are at risk in more ways than the
coach rolling over you.

****UNDERSTAND COMPLETELY THE RISK, PROCEED WITH CAUTION******

There is a lever on the ZF that will get the coach to move in just
such a situation. It is a short lever on the transmission. This has
the function of Forward, Neutral, Reverse.

Forward 20* down
Neutral center
Reverse 20* up

The engine and torque converter has to be running.
Someone in coach with parking brake, not foot brake on
(must be ready to keep the coach from moving.)
Another person goes under the coach and moves the lever
to go forward or reverse then return to center (neutral).

Personally this scares the hell out of me to consider doing this
but if you have to get it moved this will do it. Understannd also
this coach is very heavy and can crush you.

Bob Janes, Greenville, SC





--- In WanderlodgeForum@yahoogroups.com, "Alan"
wrote:
>
> Well, after many hours this is where I currently am.
>
> 1. I have zero volts going to my ZF ECU.
> 2. The coach won't start. Now I'm pretty sure that's because
> without voltage to my ECU, the coach doesn't know if it's in gear
or
> not. (I can jump my starter solenoid and it starts.)
> 3. I talked to Dan at ZF in Chicago and he was quite helpful. He
> told me how to check voltage on the ZF. BUT he didn't know where
the
> ZF gets it's power off the coach.
> 4. I am getting volts out of my 75amp ignition relay with the key
> turned on.
>
> There are bunches of ZF wires behind the grill in the steering
> column access panel. There are also two silver boxes with what are
> apparently ZF wires going in and out of them. The boxes are about
> 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> located underneath the push-button gear selectors by the driver. I
> don't know if they have anything to do with power.
>
> Questions (If anyone knows):
> 1. Where/how does the ZF get power from the coach?
> 2. Does the power go through the filtered power source under the
> couch?
> 3. What would keep me from getting any power to the ECU?
>
> Tomorrow I'm ordering a full set of electronic drawings, but in the
> mean time my neighbors would appreciate it if I can get the coach
> moved from the street.
>
> Thanks,
> Alan Johnson
> 972.769.2526
> 87FC35
>