Veris Technologies Quad 1000 Soil EC Mapping System - Operating Instructions - Manual (Page 32)

OM17-Quad1000
6-11
Procedure:
1) Remove hub cap by removing the four carriage bolts.
2)
If plunger is frozen in cap, remove the 3/8” nut on the outside of the hub
cap and apply penetrating oil on both sides of plunger. Let this stand for a
few minutes and try to remove. If it will not back out with allen wrench, lock
vise grips on the inside portion and turn out through inside of hub.
3) Clean all hub cap surfaces, coat plunger with di-electric grease and install
as outlined above.
4) At the same time, inspect the end of the spindle bolt. Over time the plunger
will wear a slight depression in the spindle bolt face. This is common, and
more noticeable on high acreage units, or units that have been operated at
high field speeds. If the depression is 1/16” or more, carefully grind the
head of the spindle bolt or replace the bolt. Clean any metal dust from
around the bearing that may have resulted from sanding.
5) Re-install hub cap and tighten firmly. You may have to re-set the plunger
to compensate for the reduced length on the newly ground spindle bolt.
Re-adjust as outlined above.
Note: If you are still unable to obtain favorable resistance readings, check for excessive corrosion
at the disk blade mounting bolt, or the disk connector wire terminal. Also, it may be necessary to
grind the spindle bolt end smooth, if a dimple has developed.