Rockwell Differentials

Tommy

New member
Rockwell-Standard Differentials

Hello all.

Please refer to this thread :icon_biggrin: -

http://forums.IHPartsAmerica.com/readers-rides/12420-International-harvester-xf4-army-prototype.html

Sorry to bother you with more questions but I am hoping members May be able to provide some info or guide me to the relevant information in relation to the two differentials I have in my xf4.

Both the front and rear differentials are rockwell-standard. I have managed to extract the following information from the differential housings.

rockwell
5200

a4 a5 73

3 (or 5) 83

5 1470 nki (not confident this is correct)​

I presume the differential is a rockwell 5200. Could the a4 a5 73 be the date stamp. Could 3 (or5) 83 be the ratio? Not sure on the last code as I am not confident that I have read it correctly.

I cannot find anything on the internet about 5200 differentials.

Unfortunately, the workshop manual does not refer to any particular model of rockwell differential. The illustrations and photographs show the differentials with different, 'smoother' gusset-less housings. If the date of 1973 is correct, then this would suggest that both differential assemblies were replaced after the army trials.


Front differential

front%20diff1_zpsy4zvp5wp.jpg


front%20diff2_zpsysq88kmq.jpg


front%20diff3_zpsotemrt2k.jpg


Rear differential

rear%20diff1_zpsthmuqnow.jpg


rear%20diff2_zps9m2knoo3.jpg
 
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