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Bearings
Throughout the Mudd-Ox are bearings which enables parts to rotate. It’s extremely important to maintain bear-
ings, as replacement is a time consuming and expensive process. Grease bearings every 25 hours or after enter-
ing mud or water, whichever comes first. Only use marine wheel bearing grease.
Signs of Worn Bearings
• Water leaks inside the Mudd-Ox around the outer axle bearings.
• Control and shift lever assemblies wobble in all directions.
• The axle and wheel assembly wobbles in all directions.
• Drivetrain is put into a bind, making a “popping” sound.
• Sprockets and chains have uneven wear.
Inspection
See Raising the Mudd-Ox under Jack Points to raise the vehicle using the wooden block method. To check axle
bearings, simply grab a wheel and firmly attempt to wobble it in all directions. If the entire axle assembly has any
slop or movement, at least (1) axle bearing is worn. As it is difficult to determine exactly which bearing is faulty,
we recommend replacing all bearings on the axle assembly while it’s being serviced. See Removal under Axles
replacement.
Figure-1
Check for Slop
Bearing Quantities
For each axle, there is (1) inner bearing and (2) outer bearings. Total (24) axle bearings, with (8) being inside the
Mudd-Ox lower body and (16) being outside.
Grease Zerk Configurations
XL may have various grease zerk setups:
A. Standard zerks: The grease zerk for each bearing is located right on its flange. You must reach each individual
bearing to perform maintenance (Figure-2).
B. With optional Grease Zerk Relocation Convenience Kit: All axle bearing grease zerks are rerouted to centralized
locations. This makes greasing much faster and easier (Figure-3).
Figure-2
Standard Zerk
Figure-3
Optional Relocated Zerk
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