Eaton rs 402

We have about half dozen halfway decent shops around here but nobody can tell/recommend what to do for this upgrade

 

I don't think that was what caused the driveshaft to fail. I know for a fact my dad would always lock in the inter-axle and center rear drive axle at all times in adverse conditions in the bush. He'd lock in the rear and front axles as needed and he has never lost a driveline. Every other logger with tandem and tri-drive trucks does the same thing without failures. 77k miles means nothing. If your U-joints aren't getting grease 2 all 4 trunnion ends, it'll fail unbelievable fast. I've seen U-joints fail at under 50k miles due to lack of lubrication.

 

Id say a rd 402 is getting hard to come by. Im curious as well....

 

I checked on one for a customer and found eaton makes a detroit no spin. Remove spider gears and install in place. Run about 1000 but cheaper than axles and carrier. There not driver selectable but kicks in when needed. A cheaper alternative I considered for my service trucl

 

Those have been around for years. My old man put one in his '78 back in the 90's.

 

I'm with you on this one NM. I pull a super B, with DS402's and a locker only in the back diff. Not my first choice of a setup, wish it had full locks, but it doesn't. I manage ok, but I'm very careful with it also. The main driveshaft is the big one 1810 I believe its called, but the one between the diff's ain't very big. Just gotta drive er like a "ship of glass".
Oh, and keep er greased.