TM 10-3530-207-14
Table 3-1.
Operator Troubleshooting - continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CLOTHING SEWING MACHINE
18.
PRESSER FOOT PRESSURE REGULATOR THUMBSCREW IS HARD TO ADJUST.
Presser foot may have been lowered before change was made in the pressure setting.
a.
Raise presser foot with hand lifter. Decrease pressure on presser foot by turning the pressure
adjusting thumbscrew counterclockwise. Lower presser foot and adjust presser foot to the desired
pressure for the fabric being worked.
b.
If presser foot pressure cannot be increased or decreased, notify next higher level of
maintenance.
19.
MACHINE VIBRATES .
Step 1 Check that hinge plate mounting screws are tight and check that table is on a flat hard surface.
a.
If any screws are loose, tighten.
b.
Relocate table to flat, hard surface, if necessary.
Step 2. Check that all four felt pads are installed in the table tops.
If any felt pads are missing, notify next higher level of maintenance.
Step 3. Machine motor drive belt is probably too tight.
Adjust belt (paragraph 3-10).
Step 4.
Machine drive pulley or balance wheel is out of balance, loose, or installed wrong.
Notify next higher level of maintenance.
20.
LAMP DOES NOT LIGHT.
Step 1. Check lamp ON-OFF switch.
Set lamp ON-OFF switch to the ON position.
Step 2. Check that lamp light cord is plugged into power outlet.
Plug in light cord into power outlet.
3-18
