Should I changed DD fluid?

[mountaincat 800]

Just an update...dealer said no service needed if my sled only has 100 miles since last change. Said if I decided to do it, it would be 2.5 hours of labor plus fluid.

2.5 hours! Wow, now I'm not sure about that better than most dealers comment. Unless they are taking the diamond drive out and opening it up there is no way they could charge 2.5 hours. By the way I do agree with no service needed if only 100 miles.

 

[BordnBill]

2.5 hours! Wow, now I'm not sure about that better than most dealers comment. Unless they are taking the diamond drive out and opening it up there is no way they could charge 2.5 hours. By the way I do agree with no service needed if only 100 miles.

I thought that it sounded like a lot, but I checked my invoice from the one I had back in December and it listed it at 2.0 hours and had charges for the fluid and gasket. The gasket was needed because I had the bearing updated. I will call again, but I'm almost sure she said 2.5 hours labor to service the DD.

 

[Tomkat700]

Just bought a 2010 M8 HCR with 450 miles, I don't think the bearing has been done. I am going to tear down clean and inspect the DD this summer, What bearing should I replace it with and where is the best place to get one?

 

[BordnBill]

Just bought a 2010 M8 HCR with 450 miles, I don't think the bearing has been done. I am going to tear down clean and inspect the DD this summer, What bearing should I replace it with and where is the best place to get one?

I got the 4203 replacement from the dealer.

 

[Paul27]

Tomkat;

For more info than any sane person would ever want about DD's: http://www.snowestonline.com/forum/showpost.php?p=3239405&postcount=524

For a 2010 M8 HCR I believe the 3203 bearing type is best, in "A" style (no grease grooves), "TN9" polyamide (nylon) cage, with "C3" added clearance (0.0003") for press fit (definitely don't use "C2" tight fit, normal fit [no C designation] is OK, C3 is better), without rubber seals (not "2RS1"), and without steel shields (not "2Z"). The "SKF Explorer" brand and version are my favorite. Total bearing name & number is: SKF 3203 ATN9/C3. Search "SKF 3203" on eBay and several are for sale, but only a few are C3. Get a new one, sealed in plastic wrap. Your local industrial bearing supply store should have several on their shelf.

FAG, NSK, Koyo and NTN are also very good bearing brands. I don't use Chinese bearings - too many poor quality fakes from that country.

5203 type is an old style, with the same dimensions, but less quality. 4203 type is less common, used more in England, and has a thinner width dimension, with less axial load capacity.