Veris Technologies 3100 Soil EC Mapping System (1997-2008 CF card drive 1.77D) - Operating Instructions - Manual (Page 10)

Veris Technologies
Pub. #OM 1CM02-1
10
grease zerk
Hubs -- Use good quality wheel bearing or lithium grease for lubrication, but we
suggest that you grease the hubs sparingly. Over-lubricating the hub
will result in pre-mature seal failure, and an excessive amount of grease
in the hub cap/commutator. On an interval of 150 hours, 1-2 strokes of
grease should be sufficient.
Grease zerk
ADJUSTMENTS
Commutators-- The spring-loaded commutators are located in the center of each coulter
electrode hub cap. They are factory preset, and should not need
routine adjustment. If a continuity test shows abnormally high resistance,
the commutators should be checked. This may be performed in the following
manner:
1) Remove the 3/8” allen head set screw.
2) Remove the commutator by turning counter-clockwise.
3) Depress the spring loaded tip on a hard surface to determine if
plunger has adequate tension and can move freely.