Speedometer reading changed

[Hasdrubal]

Took my M1009 in today to a reputable transmission shop I have used before to take apart, replace seals snd bushing and re-seal my transfer case. Looks great, no leaks anymore. Drive away and notice that my speedometer is reading way too slow. Not bouncing or anything weird, worked perfectly this morning. Searching the forum I came up with this thread ;

"All the CUCV trucks came with the same gears inside the tcase for the speedometer. Because the 1009 is the odd ball, a gear reduction box was put between the tcase and the speedometer cable. That box however was used to speed up the speedometer cable."

Does anyone have a photo of this unit? As well what color is the gear inside supposed to be? Will call them tomorrow, I'm hoping the guy working on it left this reduction box on his bench.

 

[Keith_J]

Yes, they left off the speedometer correction unit. The mechanic probably didn't know what it was for as most vehicles use electronic speedometers.

 

[Barrman]

Go get your box back. It screws on real easily. It is silver, covered in crud and probably in their trash can by now.

 

[Warthog]

Item number 8 from the TM 9-2320-289-20p parts manual

 

[Hasdrubal]

Thanks for that pic, couldn't seem to find it when I searched last night. Turns out the guy who re & re'd it was different than the guy who hot tanked the cases. 2nd guy took said unit off and didn't tell first guy about it. Went in today and had it put on.