Front Rotor Assembly; Front Housing – Rotor, Shaft & Core Assembly - Komatsu 930E-2 Shop Manual

4. Using tool BF4818 and a press, press front bear-
ing into front housing until bearing seats against
retaining ring (Figure 13-24). Outer ring will be
installed after housing is placed on shaft.
FIGURE 13-24.
1. Tool BF4818

FRONT ROTOR ASSEMBLY

1. Position rotor assembly on front end of shaft and
core assembly.
Note: Front end of shaft and core assembly has
woodruff key slot in shaft (Figure 13-25).
2. Using six flanged locknuts or self tapping screws,
fasten rotor assembly to shaft and core assembly.
(Loctite should be applied to studs or screws
before installing). Torque flanged locknuts to 45
in. lbs., 5.0 Nm, screws to 65 lb-in, 7.3 Nm.
Note: Center studs or holes of core in the center of slot
in rotor plate.
FRONT HOUSING – ROTOR, SHAFT & CORE
ASSEMBLY
Note: When replacing shaft and core assembly, (using
ring seal) refer to Figure 13-35 before proceeding with
assembly.
1. Support rotor, shaft and core assembly on blocks
with the rear bearing end down.
2. Position bearing in front housing assembly onto
shaft, drive side of housing facing up.
3. Using tool BF4810 press bearing on shaft until
bearing inner race seats on shaft shoulder (Figure
13-26).
4. Install tapered retaining ring with tapered side to
front outer side, in front outer groove of front
housing (1, Figure 13-23).
M13003 04/01
1. Shaft
1. Arbor Press
Niehoff Alternator Overhaul Manual
FIGURE 13-25.
3. Slot
FIGURE 13-26.
2. Tool BF4810
M13-19