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What does this switch do? on 2011 John Deere 85D Excavator

S

Serega

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Joined
May 5, 2019
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22
Location
Washougal WA
Hey does any one know what this little toggle switch is for on 2011 John Deere 85D.
It is located inside the fuse box and has a guard over it... see picture JD Switch pic.jpg
 
R

Ronsii

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Jun 26, 2011
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Western Washington
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s/e Heavy equipment operator
Emergency engine kill is at the bottom of the seat, pull lever.

I jumped through the operators manual but didn't see anything... self destruct???? ;)
 
uffex

uffex

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Lincoln UK
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Good day
On many machines there are ECU by-pass with a separate engine control this looks kind of similar.
Kind regards
Uffex
 
mg2361

mg2361

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It is a "learning switch" and should not be touched. Just make sure it stays in the center position (which it looks like it is). It is used for engine speed learning when any engine speed components have been replaced or adjusted.
 
S

Serega

Member
Joined
May 5, 2019
Messages
22
Location
Washougal WA
Ronsii said:
Emergency engine kill is at the bottom of the seat, pull lever.

I jumped through the operators manual but didn't see anything... self destruct???? ;)
Click to expand...
yea.. I don't want to play with it to see what would happen just not to cause some issue but it bothers me not to know what it does...
 
S

Serega

Member
Joined
May 5, 2019
Messages
22
Location
Washougal WA
mg2361 said:
It is a "learning switch" and should not be touched. Just make sure it stays in the center position (which it looks like it is). It is used for engine speed learning when any engine speed components have been replaced or adjusted.
Click to expand...
Interesting... (Would EGR delete be considered one of those?)
 
LACHAU

LACHAU

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Joined
Aug 11, 2009
Messages
991
Location
Saigon, Vietnam
mg2361 said:
It is a "learning switch" and should not be touched. Just make sure it stays in the center position (which it looks like it is). It is used for engine speed learning when any engine speed components have been replaced or adjusted.
Click to expand...
You are right, Sir.

LEARNING SW.png

LEARNING SW 2.png
 
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