Komatsu 4D98 Series Shop Manual page 163

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