−
55
−
Trouble
Oil wick of the face plate has dried out.
Cause and corrective measure
• Check whether the route of oil wick from the float case is interrupted.
• Fill oil to oil wick as pump priming in case of a long period of disuse.
Cause and corrective measure
• Plunger is not fitted in the groove of plunger of the hook driving shaft.
Remove plunger screw, spring and plunger, and check that the groove of
plunger is in the center of the hole of machine bed.
↓
At the time of NG
Longitudinal position of the hook driving shaft is slipped or the position of
pump metal is slipped.
Adjusting the longitudinal position of hook driving shaft
Finely adjust so that the groove of plunger of the hook driving shaft is
aligned with the plunger hole. At this time, loosen the thrust screw of
the hook driving shaft.
Adjusting the position of pump metal
Move the pump metal to the right or left (fine adjustment) and
determine the position of pump metal so that work holes in the
machine arm (plunger hole) are aligned with the plunger holes of pump
metal. (Be sure to check that the plunger smoothly enters.)
In addition, an O ring is mounted on the pump metal. So, be careful at
the time of adjustment.
After determining the position, fix the pump metal fixing screw.
(Tightening torque : 25 Nm)
• When the position of the pump metal is properly adjusted, correct the position
of the hook shaft. (Adjust the groove of plunger to the center of the hole of
machine bed.)
Loosen the setscrews in the hook shaft and adjust the position of the
hook shaft to 9 mm from the end face. Adjust the backlash of the hook
bevel gear when tightening the setscrews.
(Open the gear box cover and correction of the gear position, hook shaft
bearing support and position of thread trimmer cam are necessary.)
Worn-out or burr of the top end of the plunger
↓
At the time of NG
Replace the plungrer.
• The shape of the top end of the oil amount adjustment screw is
defective.
→
Replace it.
• The hook shaft front stop plug felt clogs.
→
Replace the felt.
• The oil hole of the lubricating hook clogs.
→
Replace the hook.
• Re-check the adjustment of the oil amount.
7. TROUBLES AND CORRECTIVE MEASURES
(WITH REGARD TO LUBRICATION)
1) Oil fails to come to oil wick of the face plate.
2) Oil amount in the hook is not obtained or insufficient.
Trouble
Plunger pump fails to operate.
(Oil coming out from the joint section of
machine bed does not move.)
Oil in the pipe is moving, however, the
amount of oil is insufficient.
Hook shaft
setscrew
Hook
driving
shaft
Pump
metal
Plunger
hole
Hook
shaft
Screw
9
Pump metal fixing
screw
Hook driving
shaft
Plunger screw
