Mechanical Troubles - Foley United ACCU-Pro 670 Assembly And Service Manual

TROUBLESHOOTING (Continued)
--PROBLEM--
--MECHANICAL--
Carriage
traversing (varies
speed) while
grinding.
Traverse speed
is too slow.
--POSSIBLE CAUSE--
A--Oil on carriage drive shaft.
B--Lineal bearings in carriage
do not rotate freely.
A--Lineal bearings in the
carriage are set too tight.
B--Actuator springs set too
tight.
--REMEDY--
Wipe oil completely from shaft.
Spray down with WD-40 and
wipe off.
Replace the lineal bearings in
the main carriage. (For more
detail, see lineal bearing
replacement in the adjustment
section of the manual.)
Readjust bearings for proper
tension. (For more detail see
lineal bearing replacement in
the adjustment section of the
manual.)
Check to see if actuator
bearings have been over-
loaded, causing the bearings
to not rotate freely. (For more
detail, see actuator setting in
the adjustment section of the
manual.)
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TRAVERSING
--REASON--
Driving torque is lost
because the oil is
decreasing friction for
driving linear actuator
bearings.
Grinding grit over a period
of time does get into the
lineal bearings and cause
excessive drive torque of
carriage. Abrasive noise is
detectable when excessive
grit is in the lineal bearings.
When bearing preload is too
tight, it causes excessive
loading to drive the carriage.
When lineal actuator is
disengaged, the proper
traverse load 2 to 3 lb. Use
a tension scale to check.
(A general guide only.)
NOTE: Check with linear
actuator released.
When actuator spring
tension is excessive bear-
ings will not rotate freely
causing carriage to not run
freely.