TM 5-3610-253-14
Table 5-21. ORGANIZATIONAL TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. MAIN MOTOR WILL NOT START - Cont
Check resistance on main motor windings.
Step 4.
Remove terminal cover from motor and disconnect power lines
from main drive motor terminal block. Take ohmmeter readings
across terminals according to chart below, and be sure that all
three readings are in range indicated below. Readings for all
three phases must be equal.
THREE-PHASE MOTOR TESTS
Correct Ohmmeter Readings
Test Lines at Terminals
3-5 ohms
U and X
3-5 ohms
V and Y
3-5 ohms
W and Z
5-414
