schematic needed for a 4106 Desperate here Please

happycamperbrat · May 08, 2011, 10:43:50 AM

We still need a schematic..... Cant figure out circuit #85 This is for the people in my backyard from Alaska. George Todd is here and helping, but we need to find out about circuit 85 PLEASE....... if anyone has one......

zubzub · May 08, 2011, 12:22:49 PM

on an '04 it is a spare wire for electrical fuel gage, so presumably does not go to the rear circuit board....probably does not correspond but I thought I would throw it out there. Once again I am going to suggest a couple of 50' extension cords running down the bus, you can snake them out the rear window into the engine bay if you want. I have seen buses make it home with a fuel hose running along the side to bypass a blocked line, this is easier and safer. using the main + bar in the drivers circuit board, you can send power to any component in the back, I used a few cube relay in the rear circuit panel, and the rear + bar to control, engine stop, reverse, starter and to monitor temp and oil pressure....this got me home no problem.....since then I have been struggling to get all my wiring back up to speed, and think I might have been better off getting rid of all the old wires as I'm sure there are some frayed wires cross circuiting and making my life miserable

happycamperbrat · May 08, 2011, 12:39:54 PM

Thanks Patrick! They have the bus running now and the batteries are charging and everything as should be. The reverse is now working too! It's just they want to figure out this #85 before sending them on a long journey because they also mentioned having braking problems...... and there are a LOT of other misc. electrical issues.

buswarrior · May 08, 2011, 12:43:18 PM

Listen to zubzub.

There's a reason the electrics have been monkeyed with, these folks need a guarantee to get home, not part way up the road and have another intermittent electric problem via the old wiring.

Bypass it all with temp wires, fool with as time and leisure allow at home.

These busnuts need to get their freaking selves home with the few pennies they have left, not pass a concourse inspection on their electrics.

Get 'em home George!!

happy coaching!
buswarrior

buswarrior · May 08, 2011, 12:45:22 PM

Good news!

These folks sound like they are in way over their heads.

Get 'em home safely.

happy coaching!
buswarrior

happycamperbrat · May 08, 2011, 12:47:13 PM

Yes, that's the idea! Try to get them home and figure out the misc stuff later. They are using blocks of ice in the refer, etc. But just wanted to make sure #85 isnt something real important, especially to do with the brakes

papatony · May 08, 2011, 01:01:56 PM

camperbrat # 85 post is a spare for fuel gauige on special equepment It should not be connected to anything tony

zubzub · May 08, 2011, 01:10:37 PM

Brakes have nothing to do with the electrics except for brake lights/and the brake light monitor on the dash. "Problems" with the brakes does not bode well unless it is just lighting stuff. The slacks need to be adjsuted and monitored big time, and if the bus does not have maxis/spring brakes the driver needs to monitor air pressure very carefully.
Finally in terms of brakes (my major concern with all old/unknown vehicles) if it still has a handbrake they need to make sure it is functioning and adjusted properly (but not too tight as it will drag and cause a fire if it is too tight BTDT)

zubzub · May 08, 2011, 01:12:34 PM

Quote from: papatony on May 08, 2011, 01:01:56 PM
camperbrat # 85 post is a spare for fuel gauige on special equepment It should not be connected to anything tony

cool that circuit 85 is the same on '04 and '06 I really like the way GMC kept a lot of things the same along the PD line

TedsBUSted · May 08, 2011, 01:25:37 PM

I have an '06 schematic, I can look up and confirm #85 and then report back.

With a two-man crew, reverse can be easily engaged manually.
Or, better yet, with careful planning reverse won't be needed.
One desperate man and a bungee cord can also get reverse without electricity.

Ted

happycamperbrat · May 08, 2011, 01:38:37 PM

Well......hmm, bad news again...... I just got inside and the guys said the starter is bad afterall and will have to be rebuilt. No one around here does that kind of work. The guys are hoping maybe the bushings can be switched and it will work. Otherwise they will probably have to have it towed to Bakersfield and stored there for awhile. Their insurance AAA will cover the 200 miles..... and as for #85 it is hooked up to "something" on their bus and the guys are trying to run that down too

TedsBUSted · May 08, 2011, 02:18:32 PM

I'm not telling anyone what to do, but myself, I wouldn't sweat driving 200 miles (or 2000 miles) without a starter motor, especially with a standard trans. And after all, the hammering starter motor will start the engine; just eliminate its use except for an absolute emergency. Otherwise plan all engine stops for a rolling re-start.

I'm with Buswarrior and Zubzub, connect rudimentary starting, charging, and lighting circuits, and then aim it North.

With my schematics, I found:
#84 Driver's fan
#86 Head/fog lamp selector switch
Couldn't find #85.

One more time... the original starter motor, when connected directly to a battery, bypassing the solenoid, does nothing? No arc, no spin, no drag? I hate to keep questioning that, but although it's possible, an instant open is unusual in a starter motor.

Ted

happycamperbrat · May 08, 2011, 04:23:39 PM

George and Ron can explain this much better then me.... but yes the old starter is completely dead. The new starter was taken out (again) and jumped to the batteries on Georges truck and didnt do right..... so now they are currently taking apart the new starter and hoping they can just replace the bushings. There is no place around here that will rebuild starters. Because it is left hand turning, it is harder to find a replacement and more expensive. If they cant do anything about the starter, they are probably going to either drive it or tow it to Bakersfield to Don Fairchild.

K234039 · May 09, 2011, 07:12:06 PM

Are they changing these starters from underneath or from the top from inside the bus?

Richard

happycamperbrat · May 10, 2011, 12:06:35 AM

Hi Richard! Im sorry I didnt update this thread. There were 3 threads regarding the problems they were having and I only updated the other 2.

But what happened was that after they got the new stater opened up they found a tiny stripped screw. The little screw was causing connection issues. When they replaced that stupid tiny screw, it all worked good!

#85 and much of the other wiring was custom and only is known by the converter. There was no custom schematic either. By if and by guess and with much searching both Ron and George were able to chase down the important wiring and/or bypass stuff and get the coach working well enough to travel. The house system (lights, refer, etc.) isnt working but they are making due with blocks of ice and kerosene lamps, etc. They are still concerned about bad grounds and that the reason the original starter pooped out was because of a bad ground that will cause them more problems up the road. But they did take off out of here this morning and headed north....... so this story may not be quite over yet. Stay tuned