Forum Discussion
AH64ID
Aug 22, 2014Explorer
It's commonly considered a sales gimmick, and is an option from the axle manufacturer. The option gains the user nothing in terms of service interval, just knowing they have a zerk makes them happy.
IMHO it came to the RV world from the boat trailers with bearing buddies, which are useful.
Where does the old grease go? What is the bearing preload or end play? What shape are the bearings in?
It's also a common misconception that the wheel is to be spun during the process, yet it's not part of the manual procedures. Spinning the axle will compleatly fill the cavity, causing the bearings to run hot.
Check out the timken site on common failures, overpacking is on the list along with under packing and too much preload.
IMHO it came to the RV world from the boat trailers with bearing buddies, which are useful.
Where does the old grease go? What is the bearing preload or end play? What shape are the bearings in?
It's also a common misconception that the wheel is to be spun during the process, yet it's not part of the manual procedures. Spinning the axle will compleatly fill the cavity, causing the bearings to run hot.
Check out the timken site on common failures, overpacking is on the list along with under packing and too much preload.
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