ARMY TM 9-6115-464-34
AIR FORCE TO 35C2-3-445-2
NAVY NAVFAC P-8-624-34
Figure 3-7. Alternator Test Leads Installation
(3) Check alternator total circuit voltage as follows:
Install alternator in test circuit as shown in figure 3-6.
The test circuit is identical to the alternator installation circuit. If an operational
generator set is available, the alternator maybe installed on it for testing. (Refer to the
Operator and Unit Maintenance Manual for installation instructions.
With switch open, compare voltage readings at V1 and V2. The readings should be identical.
While checking voltage at V2, check to see if the reading varies when the cable or the
connector plug on the alternator cover assembly is disturbed. This could indicate
inadequate test connections which must be corrected before proceeding with the tests,
If voltage at V2 is low or zero, the alternator positive and negative output circuits must be tested as
indicated in steps (4) and (5) below.
If voltage readings at V1 and V2 are identical, proceed with alternator output and voltage protector
test in step (10) below.
(4) Test alternator positive output circuit as follows:
(a) Check voltage at V3 as shown in figure 3-9.