martinwcox
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- Wilmington, MA
Unlike the M939 series, the M915A1 has 'wet' hubs as in oil filled.
The front axle has a regular commercial style filled hub with a sight glass etc.
The rears are 'sealed' from the outside, to fill these, the differential has to be filled to the correct level and then the truck needs to be 'tilted":

Another 'leaning' experience!
(Note: No animals or small children were harmed in the filling of these hubs.)
Martin.
The front axle has a regular commercial style filled hub with a sight glass etc.
The rears are 'sealed' from the outside, to fill these, the differential has to be filled to the correct level and then the truck needs to be 'tilted":

Another 'leaning' experience!
(Note: No animals or small children were harmed in the filling of these hubs.)
Martin.