Hobart Brothers 6910, Руководство по эксплуатации и техническому обслуживанию с иллюстрированным списком запасных частей

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(6) Radiator
The radiator (16, Fig. 3) is a one-piece item designed for long periods of operation without servic-
ing. Refer to Section 2-1, Para. 7, G, for servicing procedure.
D. Generator
The 400-Hz generator is a brushless, revolving field, three-phase, alternating current type. The rotor
assembly is mounted by two, permanently lubricated, sealed, ball bearings: the front bearing sup-
ported by the fan housing; the rear bearing mounted in the exciter housing. Both of these housings
are attached to the main generator stator housing. The front end of the rotor shaft extends forward
beyond the rear bearing and into the exciter stator housing. The exciter rotor is mounted on this shaft
extension with a Woodruff key and is secured by a washer and 1/2"-13 thd, cap screw. A rectifier
with six diodes is mounted on the exciter rotor and converts exciter AC output to DC for excitation of
the generator revolving fields. The exciter DC output to the generator fields, and consequently the
generator output, is controlled by the amount of DC voltage supplied to exciter fields by the static volt-
age regulator. A centrifugal, radial-blade fan - part of the hub and coupling assembly - draws cooling
air over all internal windings. Air enters at the exciter end and is discharged at the drive end. The com-
plete generator is bolted to the engine flywheel housing.
Exhaust System
Figure 5
OM-2028
May 1/91 Revised 1-1
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