DETROIT DIESEL 53
B A T T E R Y - C H A R G I N G GENERATOR (D.C. and A.C.)
The proper selection of a generator which will meet
The battery-charging circuit consists of a generator
the needs of the battery-charging circuit on the
(alternator). regulator. hatter) and the wiring. The
particular engine is mandatory. This, together with
battery-charging generator is Introduced into the
adherence to the recommended maintenance proce-
electrtcal system to provide a source of electrical
dures, will reduce generator troubles to a minimum.
current for maintatning the storage battery in d
Since most generators adhere IO the same basic design.
charged condition and to supply sufficient current to
the maintenance. removal and installation procedures
carry any other electrical load requirements up to the
for all are similar.
rated capacity of the generator.
1. Maintain the proper drive belt tension. Replace
worn or frayed belts. Belts should be replaced as a set
when there is more than one belt on the generator
2. Lubricate the generator bearings as outlined in the
Lubrication and Preventive Maintenance Chart in
The alternating current self-rectifying generator
(alternator), Figs. 2 and 3. is especially beneficial on
an engine with extra electrical accessories and one that
has to operate for extended periods at idle speeds.
1. Disconnect all of the leads from the generator and
Diodes, built into the slip ring end frame, rectify the
tag each one to ensure correct re-installation.
three phase A.C. voltage to provide D.C. voltage at the
2. Loosen the generator mounting bolts and nuts and
battery terminal of the generator, thereby eliminating
the adjusting strap bolt Then, remove the generator
the need for an external rectifier. The alternator is also
available in a variety of sizes and types.
May, 1971 SEC. 7.1 Page 1