New Holland WorkMaster 50 Service Manual page 234

Four-Wheel Drive (4WD) axle - Inspect
1. Wash all parts in a suitable solvent and allow to air dry.
2. Inspect the gears for excess wear or damage. Replace
as necessary.
3. Check all the bearings for wear or roughness. Rotate
the bearings by hand and replace if necessary.
4. Inspect the axle shafts and pinion shaft for wear or
damage. Replace if necessary.
5. Inspect the front axle housing for any damage. Replace
if necessary.
Front axle system - Powered front axle
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