I couldn't find the part in the humvee manuals, but I was able to identify it as part # 12339141 through kascar Bracket, Electrical Modulator Control
Bracket, Electrical Modulator Control,1993 and 1994 H1 and all HMMWV with Turbo 400 Transmission
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I couldn't find the part in the humvee manuals, but I was able to identify it as part # 12339141 through kascar Bracket, Electrical Modulator Control
Bracket, Electrical Modulator Control,1993 and 1994 H1 and all HMMWV with Turbo 400 Transmission
That makes perfect sense.
I had forgotten about the "NON vacuum" modulators on the MIL Hummers
Anyone have part numbers for the cable and modulator?
I don't know much about humvees and I know even less about transmissions but these are parts that I believe might be involved. Use these as a jumping off point only.
trans control module 5714645
connecting link 12339149
modulator 5596528
kick down switch 5572065
OK now you have identified that what is this on the side of pump
Is that the "kick-down" switch? I know that the VRV (vacuum regulator valve) used in the civilian app includes a KD switch in addition to the variable vacuum regulator.
Trans control module? That's what a computer is called for the Allison 1000. The TH400 is not computer controlled.Quote:
trans control module 5714645
connecting link 12339149
modulator 5596528
kick down switch 5572065
When I toured AMG's Mishawaka HMMWV plant in 2006, I learned that AMG used a separate TCM in the mil-spec HMMWV for the 4L80-E. Not sure what company provided it.
The cable operated modulator is sometimes refered to (erroniously) as a module instead of as a modulator.
That little unit has a wire harness coming out the opposite end from the little roller.
My bet is that its the kick down switch for the TH400.
The civy trucks have a little switch mounted under the dash that the arm on the throttle pedal activates.
I have never gotten real close and personal with a MIL Hummer, so I can't say for sure.
It makes sense that any and all important controls for the engine and tranny would be industrial quality and not the cheezy little plastic stuff that we see on the civy stuff.
If that is the kick down switch, the contacts would close at or near the WOT position.
There is likely two wires in the little harness. The kickdown Solenoid is a simple device thats either on or off.
Activating the switch would turn the solenoid on and cause the 3-2 downshift or 2-1 downshift depnding on road speed.
The cable device controls the throttle pressure which also controls line pressure in the tranny.
More throttle = more hydraulic pressure to the clutches etc.
The reason for the cable control would be simple, the HMMWV does not use a vacuum pump and it would also likely be considered a "weak link" in the system.
The cable is a pretty much "Bomb Proof" way to go.
Interesting goodies you have there.
Missy
I got code # M196 can any one help me for the year of this block Thanks