Hobart 9OC24S Operation Manual page 287

HOBART
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;MOTOR GENERATOR DIVISION
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HOBART BROTHERS COMPANY
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OPERATION, MAINTENANCE, AND OVERHAUL MANUAL, TM-240A
SELF-PROPELLED GENERATOR SET, SPEC. NO. 5381A
(c) Slide the coupling assembly off of the shaft (see Figure 5), remove machine
key (6, Fig. 7).
(2) Remove exciter rotor assembly
(a) Remove exciter cover (2, Fig. 7).
c (b) Observe and note connection of the two rectifier-to-generator field leads
(A, Figure 8).
Disconnect and cut off terminal lugs (B).
NOTE: Cut near the terminal to save as much lead as possible.
(c) Remove varnished tape (C) h h
w ic secures the two leads between the
exciter armature fields (J) and rectifier (H).
(d) Attach a puller to the flywheel (D). Place a large, thick, flat washer or
other suitable item over the end of thegenerator shaft to prevent damage
to centering seat and threads.
(e) Pull the exciter rotor assembly off of the rotor shaft (E) carefully and
exercise the following cautions.
CAUTION: PAY CLOSE ATTENTION TO THE FIELD LEADS (A) WHILE
PULLING THE EXCITER FROM THE SHAFT. ONE MECHANIC
SHOULD WATCH THEM CONSTANTLY WHILE ANOTHER
OPERATES THE PULLER. MAKE CERTAIN THEY DO NOT
CATCH AND BE SURE THEY SLIDE SMOOTHLY THROUGH
THE EXCITER LEAD TUBES (F). STRAIGHTEN AND REMOVE
KINKS IN THE LEADS AS REQUIRED TO AVOID DAMAGE
TO INSULATION .
(3) Remove pin (10, Fig. 7) and machine key (11).
(4) Attach a chain hoist to exciter housing (12, Fig. 7) and remove screws which
attach the housing to generator stator (21). Use thin bars to pry the housing
off of the rear bearing (18). Move housing to a clear area and remove hoist.
(5) Attach the hoist to front bearing bracket (16) and remove attaching screws.
Pry the bracket off of the front bearing (17). Move the bracket to a clear
area and remove the hoist.
Ott 30/73
6-l
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