M52A1 spedo cable adapter which one?

[jamboly]

The speedometer cable adapter on my M521A1 (MACK) seems to be the cause of the speedometer not working. The -20P parts manual calls out two different adapters. A regular one and one with a drive ration of 26 to 1. Does anyone know which one I would need? (transmission is an overdrive transmission).

 

[73m819]

7409623 is the p/n for stock with 1100x20s, over drive trans does not matter

 

[jamboly]

--2580-715-3866, over drive trans does not matter

Is this part of an NSN number. I can't seem to find anything on it if it is.

 

[73m819]

I changed my post to the correct number, sorry

 

[jamboly]

7409623 is the p/n for stock with 1100x20s, over drive trans does not matter

So then it is the same as the one on the M35 ??

 

[73m819]

do not know about m35, but for the 5t ton, it is the correct p/n, out of the ord-9, the 211, 260 tms, there is a different p/n for 1400x20s, 1200x20s (246,819)

 

[jamboly]

do not know about m35, but for the 5t ton, it is the correct p/n, out of the ord-9, the 211, 260 tms, there is a different p/n for 1400x20s, 1200x20s (246,819)

What is the date on your 211 manual? My 211-20P & 211-35P (w/change 2 dated 1989) show needing 99673R1 NSN 2520-740-9623 for 1100x 20 tires.

 

[jamboly]

I did some more looking after my last post. The M800 series manual has NSN 2520-740-9623 as a 7409623, so that is what I will go with.

 

[73m819]

I did some more looking after my last post. The M800 series manual has NSN 2520-740-9623 as a 7409623, so that is what I will go with.

7409623 is used with 1100x20s on ALL 5T, from the 6602 gassers to the 250 809s
Not sure but may be used on m34/35s with OEM 1100x20s, because the speedometer is the same as the 5Ts,