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LMTV M1079 11k self recovery winch installation

R

Ronmar

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Looks like the A0 is wired to lockout transmission when operating PTO, so no power tot he wheels when winching. Seems to me I read something similar in the operators manual...
 
Another Ahab

Another Ahab

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Ronmar said:
Looks like the A0 is wired to lockout transmission when operating PTO, so no power to the wheels when winching. Seems to me I read something similar in the operators manual...
Click to expand...
If so, well that kills the whole idea right there:

- DEAD

But only if so...TM page and paragraph?
 
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Another Ahab

Another Ahab

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That little bird told me something critical.

The bird suggests that the ONLY source who might have the key to unlock the mystery here (synched vs unsynched) is an SS member named David Doyle.

Goes by DDoyle: anybody know the good man?

If so, will you kindly knock on his door and see if he is in?
 
coachgeo

coachgeo

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Another Ahab said:
That little bird told me something critical.

The bird suggests that the ONLY source who might have the key to unlock the mystery here (synched vs unsynched) is an SS member named David Doyle.

Goes by DDoyle: anybody know the good man?

If so, will you kindly knock on his door and see if he is in?
Click to expand...
according to his profile last time he was on ss was back in April...... butt..... he once last year left a calling card you might say

calling card said:
David Doyle
David at daviddoylebooks dot com
Click to expand...
 
Another Ahab

Another Ahab

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coachgeo said:
according to his profile last time he was on ss was back in April...... butt..... he once last year left a calling card you might say
Click to expand...
Outstanding. Thanks, coachgeo!!

I am going to go outside right now to search the trees for that little bird, and mention this.

Please stand-by. I'll be right back...



AA.jpg
 
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R

Ronmar

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Another Ahab said:
If so, well that kills the whole idea right there:

- DEAD

But only if so...TM page and paragraph?
Click to expand...
Foldout 21 of 34 in the A0 schematics(vehicle interface module) found in the back of the tech manuals. You are looking at the contacts of relay SF02 in the VIM which go to pine E2-E3 and on to the PTO/winch controls...

from page 1-33 of the operators manual:
“(5) The transmission may include an electrically controlled PTO (8). The PTO provides power to a hydraulic pump, which powers the 11K Self-Recovery Winch (SRW) (if equipped). The transmission will not shift from Neutral (N) if the PTO is engaged and the winch switch is in the on position.”
 
Floridianson

Floridianson

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Ronmar said:
Foldout 21 of 34 in the A0 schematics(vehicle interface module) found in the back of the tech manuals. You are looking at the contacts of relay SF02 in the VIM which go to pine E2-E3 and on to the PTO/winch controls...

from page 1-33 of the operators manual:
“(5) The transmission may include an electrically controlled PTO (8). The PTO provides power to a hydraulic pump, which powers the 11K Self-Recovery Winch (SRW) (if equipped). The transmission will not shift from Neutral (N) if the PTO is engaged and the winch switch is in the on position.”
Click to expand...
I know nothing about the winch set up on the FMTV's and was just reading the thread for it's info. It is a shame that a truck may have an electrically controlled PTO and can not be used along with tire's turning / transmission. One would think it was set up that way so someone not knowing the PTO was in gear and winch live could do damage to anything. Just a stupid question what if the PTO was not electrically controlled but manual / cable controlled could the winch be used with the transmission in gear?
 
R

Ronmar

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Yea, something to make it more operator proof, to prevent say attempting to drive in the direction opposite winching direction. Or it was something specced by Allison to keep from possibly overloading the trans/engine with drive and PTO outputs simultaneously...
 
Another Ahab

Another Ahab

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Ronmar said:
Exactly what idea are we talking about?
Click to expand...
Another Ahab said:
- With a Deuce in AWD (front engaged) transfer case in Low and transmission in first gear, that the Winch take-up to the spool is perfectly matched (and actually engineered) to match the forward progression of the truck (totally synchronized).

- "Self-Recovery Winch", right?

Anybody know if this is SO (like back it up with the TM's)?
Click to expand...
In response:

- Is the spool take-up of the Deuce winch designed/ engineered to synchronize with the forward progression of the Deuce (when it is in Low/First)?

This question was only "parked" here in this thread to save the trouble of starting a new stand-alone thread. But of course, now in hindsight, that will make any possible revelation here completely unsearchable. Man...

Anyway, there is the idea.
 
R

Ronmar

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Well any winch cable feed rate varies with the number of layers of cable on the spool. This is especially true of a mechanical PTO winch. With a mechanical PTO there may be a combination where cable speed = vehicle speed but I would not expect that situation to last as you spool cable...

An electric winch can be a little more consistent in this regard. As you add a layer to the spool the cable speed will increase, but the mechanical advantage will decrease so the motor will have more load and slow down...
 
Another Ahab

Another Ahab

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Floridianson said:
Yes on the Deuce winch slow in and first low seems to play nice.
Click to expand...
"Seems" is good, and in the right direction.

But on behalf of others, the hope was to get a confirmation of intent (even the engineering), through a reference to "chapter-and-verse" in a TM, or something similar.

Maybe though that kind of verification just does not exist.
 
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