Front wheel bearing service timeline ??

Some units have a sight glass, plastic, that all you have to do is to pop thee center cap off and look at the level.
I'm not able to see it real well on ours. It has been several years since a seal replacement and no leaks so far. Probably about time to see what the level is and maybe get it drained and refilled.
I wonder if to use synthetic or dino lube? On the differential,I had it changed, aad was told to use dino lube as it has sulfur and stuff for impact wear from the ring and pinon as well as the bearing wear.

He is probably talking about the rear hubs on the tag, that are bath. I actually don't know what my front ones are either, I assumed they are bath also. His tour has IS compared to my straight axle, so they may not be the same anyway.

wolfe10 wrote:
First, a question:

Do you have greased front hubs or oil bath front hubs?

Exactly!

And, by the way, you (the OP) state that the rear fluids are checked regularly, correct? May I ask, just how do you do that? Been around this kind of stuff for eons and, I know of no way to check that other than remove the plug in the diff to see what the level is.
Scott

First, a question:

Do you have greased front hubs or oil bath front hubs?

Just had mine checked at 51K not knowing the history of our used 05 Dynasty rig. Passenger inboard bearing was starting to mark, grease looked new when the cap was pulled. Drive side outboard bearing was near dry and had same mark on bearings. Changed over to synthetic gear oil. Cost of seals, bearings, and new oil caps was $300 and $300 labor. Now I can check oil on front axel when the tags are checked, worth it to me.

jwoods61us wrote:
Service the bearings when the brakes are replaced.

On a typical DP motorhome that would mean the bearings would never be serviced.

To the OP, are your bearings packed or are they wet lubed? I'd guess they were wet lubed but I certainly could be wrong. I can't remember if our last ones (Freightliner chassis) were packed or wet.

Either way, what does the chassis manual say? I'd think 20,000 would be a bit early.

Service the bearings when the brakes are replaced.

There are so many dependencies on bearings it's too hard of a question to ask. 20k though seems too soon to me. Do you drive primarily on good roads (not gravel/farm roads or pot holes / dusty roads)? I can't imagine they need it yet though at 20k.