Noooo not again!!! bad differential

[ninos]

Just a year and two weeks and ten thousand miles ago I had my rear diferential replaced at a freightliner dealer because when I drained it for a regular fluid change I found lots of metal shavings and small pieces of metal and the fluid was black, so today I was greasing the chassi and I decided to check the dif fluid and again lots of metal shavings almost like gliter this time its not as bad as last time but its not good. I will be at the dealer first thing in the morning droping it off for them to check it out, I hope that they will be able to warranty this thing, by the way I have a 2006 fleetwood discovery. As any one else had dif problems or is it just my RV? Joe

[pwf16129]

is this left over from the previous repair? a poor job of cleaning will pollute the fluid quickly if so should be warrantied.
but we do see very fine metal particles on the drain plugs of our fleet trucks at every service it will be a gray mush, we clean the magnets and if we suspect more problems we run a magnet to the bottom and check for flakes.

[ninos]

Well I toke it to the dealer and they sad that its probably was from the previous repair so I had them change the fluid and I will keep a look on it. Joe

[savitbound]

Have them flush it not just drain it!

[Mike Canter]

I am sorry to say but that is bad. All those metal particles that were left in the housing have now gone through all the carrier bearings, pinion bearings and wheel bearings and have damaged the races and roller bearings. That oil doesn't just sit in a pool inside that housing the gear meshing while driving is like a pump and that oil is thrown around everywhere with those particles. That differential housing should have been stripped and washed out when it was rebuilt. I think you and that service department to come to some agreement as to either taking it back apart and cleaning it and inspecting and installing all new bearings if required. If not then I would have him sign something on an extended agreement if you have a future bearing failure.

[ninos]

They did take it all apart and cleaned it all out checked the bearings and replaced the seals, this time it's not that bad that it's got lots of metal they told me that most likely that was some residue from the previous failure so for now I had them change the fluid and before I put it away for the winter I will check it again. Joe