TM 10-3530-207-14
Table 4-2. Unit Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CLOTHING SEWING MACHINE - continued.
12.
MOTOR DOES NOT START.
Use a multimeter and check for 110 Vac at power outlet box on the table tops.
a.
If power is not present, the power or distribution cable may be defective. Test cables (para.
4-60 and 4-61).
b.
If power is present, notify next higher evel of maintenance that motor or switch may be
defective.
13.
UNUSUAL NOISE IN MOTOR.
Notify next higher level of maintenance of defective motor.
14.
MOTOR DOES NOT PULL LOAD.
Step 1.
Check for loose, slipping, frayed or deteriorated drive belt.
Replace drive belt (para. 2-8 and 2-18).
Step 2.
Use a multimeter and check that input voltage at power outlet is 110 Vac.
If voltage is low, check generator set for proper power output.
Step 3.
Rotate handwheel toward operator, check sewing machine for binding.
If sewing machine is not binding, notify next higher level of maintenance of a possible
defective motor.
4-35
