a rant on jd

[chickenman]

Not sure what is is with JD and manuals. My new 4105 never even came with one. I did finally get it 2 months later. Thank god they had the online version :confused2:

this is about the repair manual which has to be paid for not the operators manual

 

[slaveToHorses]

Gee, being the electrical engineer amongst a conclave of mechanics, I was always the guy that did the electrical troubleshooting. I don't think I ever worked on a vehicle whose wiring actually matched any of the schematics in the manuals. They are always a little different here and there. The looms always evolve over time and vendor changes.

Rant on, if it makes you feel better. Otherwise just trace it out and be done with it.

 

[billb3]

I work on electronic equipment and not quite exact schematics are more the norm not the exception unfortunately. Even some of those troubleshooting guides in the back pages were written before a product was built. They usually don't represent much beyond rudimentary prototype field testing.

Usually there's a blurb/disclaimer on a front page stating manufacturing deviations may exist.


I have a tendency to pencil in changes that apply to my model - every now and then it saves some time.

 

[chickenman]

Gee, being the electrical engineer amongst a conclave of mechanics, I was always the guy that did the electrical troubleshooting. I don't think I ever worked on a vehicle whose wiring actually matched any of the schematics in the manuals. They are always a little different here and there. The looms always evolve over time and vendor changes.

Rant on, if it makes you feel better. Otherwise just trace it out and be done with it.

tracing a wire is easy but what voltage is the controller looking for coming out of a pot?

that would be nice to know

 

[twarr1]

Years ago I worked for a "major aircraft manufacturer". You could go to the drafting department with a serial number and get any drawing for any aircraft ever built by them. And it was correct. If they can do it, seems like everyone should be able to. I realize people make repairs and modifications after a product leaves the factory, but the company should know what they built!
Just to balance things out, I do like JD's online parts diagrams.

 

[hawkeye08]

If the paper manual was made for the xx generation and then electronic versions available by serial number, it would solve most of these type of issues.

 

[chickenman]

I worked for boeing and the same situation, i could go to the print crib and get a printout of anything i needed

 

[Interlaux]

Bless you Chickenman:drink:
Being an engr. when I first read the rant I was kinda thinking - so what - I work on some really old stuff and also have to meter stuff out but...
I have an early serial number 4610 and my $80 manual wiring diagrams (checked today) are not 100% accurate.
Here is my cunning plan...
My local JD dealer has an open door policy and have used it to corner Charlie the local service guru a time or two.
If I need some help with wiring or test point voltages etc.. I'll corner him and hope with my serial number, some tenacity and the JD service computer mother-ship I'll get what I need.
Something about going to the dealer and getting free coffee and Charlies time is rewarding to me.
Hope that the controller and some seat time make you fell better!

 

[chickenman]

Bless you Chickenman:drink:
Being an engr. when I first read the rant I was kinda thinking - so what - I work on some really old stuff and also have to meter stuff out but...
I have an early serial number 4610 and my $80 manual wiring diagrams (checked today) are not 100% accurate.
Here is my cunning plan...
My local JD dealer has an open door policy and have used it to corner Charlie the local service guru a time or two.
If I need some help with wiring or test point voltages etc.. I'll corner him and hope with my serial number, some tenacity and the JD service computer mother-ship I'll get what I need.
Something about going to the dealer and getting free coffee and Charlies time is rewarding to me.
Hope that the controller and some seat time make you fell better!

i have a mountain of print outs and none cover the wiring on my tractor

It appears it's a problem that doesn't crop up often so they don't know much about it themselves

my tractor has a speed sensor deleted and different pin outs on the computer than shown in the wiring diagrams

when you trace a wire to a black box, where does the signal come out and what is the voltage supposed to be?

 

[lilranch2001]

i have a mountain of print outs and none cover the wiring on my tractor

It appears it's a problem that doesn't crop up often so they don't know much about it themselves

my tractor has a speed sensor deleted and different pin outs on the computer than shown in the wiring diagrams

when you trace a wire to a black box, where does the signal come out and what is the voltage supposed to be?

Maybe its like the nuns used to tell us in catholic school when we asked theological questions, and they did not know how to answer it so they said.....

"Its a mystery"