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Komatsu 4D98 Series - Disassembly, Inspection, and Reassembly

Komatsu 4D98 Series
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10. Alternator
10.2.4 Disassembly Procedure
(1)
(2)
(3)
(4)
M5 through bolt
Remove the M5 through bolt. Then raise
the temperature at the center of the rear
cover by approx. 50°C by blowing with a
dryer. Insert the tip end of a flat head
screwdriver into the gap between the front
cover and stator core (at 2 places) to
separate the front side (front cover and ro-
tor) from the rear side (rear cover and sta-
tor).
Note: Carefully operate so as not to
damage the stator core with the
flat head screwdriver.
Dryer conditions
Dryer : 1 to1.5kW
Time
: 1 minute
Distance
: From the upper side
Pulley nut assy
Pulley
Rotor
Fix the rotor in a vise, and remove the
Ml6 pulley nut (24 mm). The pulley, front
cover and rotor can be removed.
*Parenthesized dimension is the wrench
size.
Fig. 21
Fig. 22
10-17

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