TM 9-3405-215-14&P
SAW GUIDES (Insert-Type)
(2) High band speed causing friction. Use Saw-Eez, or
coolant, to lubricate band. Use roller saw guides, if
possible.
packed for life with a special lubricant.
They are
(3) Roller guide rollers adjusted too tightly on
replaced by removing snap ring; then pulling out bearing
(4) Chip brush worn or not property adjusted. This
and shaft. New bearings are easily installed with a light
allows chips to stay on wheel.
press fit.
(5) Back-up bearing needs replacement.
DRIVE MOTOR
PREMATURE SAW BAND DULLING
Follow manufacturer's maintenance instructions for main
(1)
Saw band not bei ng properly broken in on first few
drive motor. They are on a tag attached to motor.
cuts. Reduce feed pressure and speed on first
cuts.
(2) Band speed too high, causing abrasion.
(3) Saw band pitch too coarse.
(4) Feed pressure too light.
TROUBLE SHOOTING
(5) Coolant not covering saw band.
(6) Cutting rate is too high.
MACHINE WILL NOT START
(7) Faulty material: heavy scale, inclusions, hard spots,
etc.
(1) Check band tension limit switch (if provided).
(8) Saw band vibration.
(9) Chipped tooth lodged in cut.
(2) Check band drive motor starter reset. Starting and
(10) Chip welding.
stopping machine a number of times in quick
(11) Inserts too wide for blade width, allowing them to hit
succession will cause an overload to trip starter
set teeth. Listen for clicking sound during band
heater.
Push reset button after locating and
operation.
correcting trouble.
BAND SLIPS FROM WHEELS
(3) Check fuses located behind DC circuit board.
(1) Upper wheel not correctly aligned. Band should
MACHINE VIBRATION
track near wheel tire's center.
(2) Too much coolant, or slippery coolant, being used.
(1) Band wheels have become unbalanced.
(3) Incorrect initial machine alignment.
(2) Drive belt is unbalanced.
(4) Improper guide block used.
(3) Machine base is not shimmed properly.
SURFACE FINISH ON WORK TOO ROUGH
SAW BAND VIBRATION
(1)
Saw guide insert worn. Re-adjust or replace.
(1) Worn blade teeth. (Inserts too wide for blade will
(2)
Saw band speed too low.
damage set teeth).
(3)
Saw band pitch too coarse.
(2) Workpiece scale not removed.
(4)
Feed is too heavy.
(3) Blade too wide for radius being cut.
(5)
Machine vibration.
(4) Incorrect band or insert alignment.
(5) Incorrect feed force or band speed.
FILE BAND BREAKS
(6) Coolant not being applied evenly to both band sides.
(7) Upper post saw guide not close enough to
(1) Feed force is too high.
workpiece.
(2) Wrong file band type being used.
(8) Incorrect saw band tension.
(9) Check for loose post.
Adjust cover plate, if
POOR BAND FILING FINISH
necessary.
(1) Feed force is too high.
EXCESSIVE INSERT AND BLADE WEAR
(2) File band not correctly assembled.
(3) Band tension is too high. Set for same as 1/8-inch
(1) Inserts adjusted too tightly on blade.
(3.2 mm) wide carbon band.
15
