Trouble shooting – Sears 113.21371 User Manual
Page 19
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trouble shooting
WARNING:
FOR
YOUR
OWN
SAFETY,
TURN
SWITCH
"OFF"
AND
ALWAYS
REMOVE
PLUG
FROM
POWER
SOURCE
OUTLET BEFORE TROUBLE SHOOTING.
TROUBLE
PROBABLE CAUSE
REMEDY
Noisy Operation
1. incorrect belt tension
1. Adjust tension. See section "Getting To Know
Your Drill Press" . . .BELT TENSIONING ROD.
2. Dry Spindle
2. Lubricate spindle. See "Lubrication" section.
3. Loose spindle pulley
or motor pulley.
3. Tighten setscrews in pulleys.
Drill Burns.
1. incorrect speed
1. Change speed. See section "Getting To Know
Your Drill Press" . .. DRILLING SPEED.
2. Chips not coming out
of hole.
2. Retract drill frequently to clear chips.
3. Dull Drill
3. Reshapen drill.
4. Feeding too slow.
4. Feed fast enough . . .allow drill to cut.
5. Not lubricated.
5. Lubricate drill. See "Basic Drill Press
Operation" section.
6. Drill running backwards.
6. Check motor rotation. See "Motor Specifications
and Electrical Requirements" section.
Drill leads off ...
hole not round.
1. Hard grain in wood or
lengths of cutting
lips and/or angles
not equal.
1. Resharpen drill correctly.
Wood splinters on
underside.
1. No "back-up material"
under workpiece.
1. Use "back-up material" .. .See Basic Drill
Press Operation" section.
Workpiece torn
loose from hand.
1. Not supported or
clamped properly.
1. Support workpiece or clamp it. . .See "Basic
Drill Press Operation” section.
Drill Binds in
workpiece.
1. Workpiece pinching drill
or excessive feed
pressure.
1. Support workpiece or clamp it. . .See "Basic
Drill Press Operation” section.
2. Improper belt tension.
2. Adjust tension . . .See section "Getting to Know
Your Drill Press" . . .BELT TENSION ROD.
Excessive drill
runout or wobble.
1. Bent drill.
2. Worn spindle bearings.
1. Use a straight drill.
2. Replace bearings.
3. Drill not properly
installed in chuck.
3. Install drill properly . . .See "Basic Drill
Press Operation" section.
4. Chuck not properly installed.
4. Install chuck properly . . .refer to "Unpacking
and Assembly Instructions" . . .INSTALLING THE
CHUCK.
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