TM 9-4910-663-12
volt units, and the 7 ohm resistance with 24 volt units. However,
with 6 volt units of less than 15 amperes capacity, some specifica-
tions will call for the use of 1 1/2 ohms fixed resistance in order to
avoid interference with the current regulator, and with 12 volt regu-
lators of less than 15 amperes capacity, the use of 2 1/4 ohms may be
specified for the same reason. The 1/4 ohm resistance is used for
certain 6 and 12 volt systems, but it is connected to the positive
bus.
2-9. OPERATING AND TEST INSTRUCTIONS. Operating and test instruc-
tions in the remaining paragraphs of this section provide the operator
with general test procedures for items that can be checked and tested
(Refer to table 2-1.1.) Each item must be
using the test stand.
thoroughly bench inspected, adjusted, and tested before attempting to
test the item on the test stand. Always refer to the latest pertinent
technical manual and/or technical bulletin for the item, as publica-
tions will contain the latest rebuild procedures, settings, adjust-
ments , and test procedures. To obtain a more accurate setting and
adjustment, items should be reset and readjusted several times, and a
test made after each setting and adjustment.
Table 2-1.1 Items That May Be Tested
Army part
Test setup
Manufacturer's
fig. no.
Manufacturer
part no.
no.
Item
Lear-Siegler
Lear-Siegler
Lear-Siegler
Prestolite
Leece Neville
Rectifier
Rectifier
Leece Neville
Leece Neville
Rectifier
Regulator
Delco Remy
Delco Remy
Regulator
Vapor
Regulator
Vapor
Regulator
Regulator
Vapor
Prestolite
Regulator
Leece Neville
Regulator
Prestolite
Leece Neville
Leece Neville
Leece Neville
Leece Neville
Leece Neville
Leece Neville
Leece Neville
Bendix
Starter
Bendix
Starter
Delco Remy
Starter
2-32
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