a - Grease fitting b - Vent hose
NOTE: After 30 hours of operation, pump in extra grease to purge
out any moisture. Visually inspecting the purged grease at this time
will give an indication of conditions inside the bearing housing. A
gradual increase in moisture content indicates seal wear. If the
grease begins to turn dark or dirty gray, the driveshaft bearing and
seals should be inspected and replaced if necessary. Some
discoloration of the grease is normal during the break‑in period on
a new set of seals.
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