- Check cone screws and bushings on the feed finger arm and
the rocker head. These cone screws and bushings should be replaced every year.
Torque cone screws as instructed on page 18, question 5
of the Armstrong Band Saw Troubleshooting Guide (P/N 11103) included with
- The old style rocker arm assembly may need to be replaced
after 6,000 to 10,000 hours of operation (usually 10 to 15 years of moderate usage --
about 2 to 3 hours per day). The current, heavy duty rockers with replaceable feet will
usually last 50% longer before replacements is needed. See page 13 of the
Troubleshooting Guide for more about rocker arm replacement.
- Remove the grinding wheel and, with a magnetic base dial
indicator, check the arbor collar for run-out. Run-out should not exceed .003" (.075
mm). Replace the arbor or bearings as needed if more than .003" run-out is indicated.
Inspect the arbor drive belt and both pulleys. Replace all worn parts.
- Clean the faceplate as needed and inspect for proper
installation and wear, using a straight edge. Old style steel faceplates tend to wear
"hollows" under the hold down rollers and should be replaced with new,
self-cleaning carbide faceplates. Improperly installed faceplates on No. 4 and 6
sharpeners may be bowed or twisted on the sharpener. The hold down screws on these
faceplates should be snug but not too tight.