Troubleshooting
11
IMPORTANT:
When carrying out any adjustments turn off switch and make sure electrical leads are
disconnected from mains
power.
PROBLEM
POSSIBLE CAUSE
THE CURE
Excessive vibration
Out of balance work
Reduce spindle speed.
Prepare wood to a true circle before loading into lathe.
Point of holding may not be centralised.
Holding method may not be suffi ciently tight.
Drive belt has been over tensioned or damaged
Weight of motor should be suffi cient prior to locking.
Motor pulley not in correct alignment with
headstock pulley.
Re-align motor pulley to headstock pulley square and
parallel to each other.
Headstock pulley loose
Check pulley is correctly on shaft.
Tighten L.H. Locknut.
Tighten both grub screws in pulley
Bolts holding motor to support plate are loose
Tighten all bolts and check correct pulley alignment.
Single phase motor
Many single phase motors due to their method of design
produce minor vibrations which usually can not be
altered
Face plate or chucks
running out of true
Dirt build up on rear of faceplate or chucks or around
hexagon locking face.
Clean off all build up
Belt not running true
or becoming damaged
on edges.
Headstock and motor pulley incorrecly lined up
1. Open access cover on bed.
2. Loosen motor bolts.
3. Re-align both pulleys square and parallel to each
other.
TAILSTOCK
Tailstock handwheel
becoming hard to turn
Build up of dust and wood resin on quill or inside of
handwheel thread.
Remove quill and handwheel from tailstock body. Wipe
clean all areas including inside of tailstock body lightly oil
quill and grease handwheel. Re-assemble.
Tailstock not locking
correctly onto bed.
Incorrect clamp plate adjustment
By adjusting the nut under the clamp plate increased or
decreased clamp pressure can be obtained.
Tailstock not running
smoothly on bed ways.
Dirty bed ways and underside of tailstock body
Clean bed ways and underside of tailstock body with
kerosine or similar.
Incorrect adjustment on clamp plate
Adjust clamp plate nut.
TOOLREST
Turning tools not
running smoothly
across toolrest
Damaged surface on toolrest face caused by sharp
edged tools.
Using a fi ne fi le, smooth surface on top of toolrest and
polish with sandpaper. Remove sharp edges from
corners of turning tools.
CAM-LOCK TOOLREST BRACKET
Toolrest bracket not
running smoothly on
bed ways.
Incorrect clamp plate adjustment.
By adjusting the nut under the clamp plate increased or
decreased clamp pressure can be obtained.
Dirty bed ways and underside of cam-lock brocket.
Clean bed ways and underside of toolrest brkt. body with
kerosine or similar.
Toolrest bracket not
locking correctly onto
bed.
Incorrect clamp plate adjustment.
(Excessive pressure on cam lever should be
avoided.)
By adjusting the nut under the clamp plate increased or
decreased clamp pressure can be obtained.
Toolrest bracket be-
coming tight to turn
Dirty cam shaft and clamp tube.
Remove cam shaft from cam-lock bracket and clean all
parts with kerosine or similar.
CENTRES
Spur drive centre or
tailstock centre not
holding into tapers
when turning
Small end of taper has been damaged due to
dropping or hitting.
File or polish away any damage.
Check that inside of tapers have not been scored.
Grease or oil inside of tapers.
Wipe clean inside of tapers. Smear of oil between uses
will help to reduce rusting.
Insuffi cient pressure when loading.
Quick fi rm pushing by hand is required. Do not knock in
with solid object.
