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10.0 TROUBLE SHOOTING
Trouble or Failure
1
The electricity is on, but the spindle
does not run after the starting lever
is moved downward or upward
2
Outflow of coolant fluid is weak
3
No coolant fluid comes out of coolant
nozzle
4
Spindle does not stop instantly even
when treadle is fully depressed.
Sharp, shriek noise in braking action
5
Intermittent noise in headstock
6
Headstock and gear train are
running and starting lever is moved
upward or downward, but the feed
rod or leadscrew does not rotate
7
When turning long workpiece the
right end is smaller than the left end
in diameter
8
Chatter line occurs on turned
workpiece
9
No oil comes out of one shot
lubrication
10
Carriage vibrates during heavy
cutting
11
Oil leaks at right side of gearbox
EGH-1880 | EGH-2180 | EGH-21120
Possible Causes
1. Fuse is burned
2. Thermal relay is overloaded
1. Running orientation of coolant
pump is wrong
2. The inside of coolant pipe is rusted
or otherwise restricted
The steel ball inside the coolant pipe
is stuck to the "O" ring
Brake lining has been worn out
Headstock shift levers are not in
position
Gearbox shift levers are not in
position
Tailstock is not in good alignment to
headstock
1. Lathe cutter is dull
2. Bearing is too loose
Too much air is caught in oil groove
Gib is too loose in fitting
The lubricant in gearbox is too light
Correction
1. Replace fuse
2. Reset thermal relay
1. Interchange any two line of 3
phase line
2. Clear the pipe by compressed air
or rigid steel rod
Separate the steel ball from "O" ring
by compressed air
Replace brake lining
Gearbox shift levers are not in
position
Shift levers to correct positions as
specified on data plate
Offset tailstock until the center line
between headstock is parallel to
carriage movement
1. Sharpen the cutting angles of lathe
cutter
2. Adjust the tightness of nut.
Keep on pushing one shot lubrication
pump until all air is driven out
Adjust screw in cross slide to drive
the gib slightly inside
Replace with slightly denser lubricant
in gearbox
23
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