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
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
84 C10 J code intake.
83 C10 Scottsdale w/veggie conversion.
98 K3500 Silverado CC DRW, marine injectors, 4" exhaust (kitty cat MIA), boost and egt gauges, FSD relocated, #9 resistor thingy, reman Navistar block from Kennedy installed Jan 08, Reese Signature Series Gooseneck hitch.
95 C2500 F code. Rebuilt GEP. Daily driver since Jan 2014.
That makes perfect sense.
I had forgotten about the "NON vacuum" modulators on the MIL Hummers
(1) 1995 Suburban 2500 4x4
(1) 1997 Astro
(1) 2005 Suburban (Papa Smurf)
THIS IS BOW TIE COUNTRY
Anyone have part numbers for the cable and modulator?
84 C10 J code intake.
83 C10 Scottsdale w/veggie conversion.
98 K3500 Silverado CC DRW, marine injectors, 4" exhaust (kitty cat MIA), boost and egt gauges, FSD relocated, #9 resistor thingy, reman Navistar block from Kennedy installed Jan 08, Reese Signature Series Gooseneck hitch.
95 C2500 F code. Rebuilt GEP. Daily driver since Jan 2014.
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.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.
1993 Suburban 2wd 6.2L Diesel Conversion "Andromeda":
3.73:1 gears, THM 700-R4 transmission, and
J-code 6.2L diesel from a 1984 C2500 Suburban
1996 2wd to 4wd converted Ford F-150 300ci Inline 6 "The Argo" 336,000 miles and climbing
1992 Caprice Wagon 5.0L V8 "Enterprise-D"
"Ah ha ha ha! I swear! Tractors is so dumb!" - Mater
"The Argo? That ridiculous pile of scrap metal!"
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
(1) 1995 Suburban 2500 4x4
(1) 1997 Astro
(1) 2005 Suburban (Papa Smurf)
THIS IS BOW TIE COUNTRY
I got code # M196 can any one help me for the year of this block Thanks