Alternator End-Play; Rotor-To-Drive Ring; Alternator-To-Flywheel Housing Adapter - Komatsu 930E-2 Shop Manual

4. Refer to Figure 4-5. Alternator End-play:
a. Using a flat steel bar (3, Figure 4-5) bolted
rigidly to the alternator rotor (2), install a 5/8" -
11 capscrew (4) at each end into the alternator
housing (1). Leave capscrews finger-tight.
b. Move the alternator rotor (2) axially towards the
rear (slip-ring end) by alternately tightening the
capscrews (4) one-half-turn-at-a-time. Do
NOT exceed 12.0 ft. lbs. (16.3 N.m) torque on
each capscrew. This establishes the maximum
permissIble rear travel for the alternator rotor.
c. Alternately loosen the capscrews (4) one-turn-
at-a-time, until all torque is released. Carefully
remove the bar (3).
Note: The object is to leave the rotor in its most
rearward position.
Refer to Figure 4-4.
d. Carefully measure Dimension "A" (Do not
move alternator rotor) at four locations, 90°
apart, and average the measurements.
1st measurement:
2nd measurement:
3rd measurement:
4th measurement:
Dimension "A":
e. Add 0.010" to Dimension "A".
f. Record (d + e) as;
"Measurement A":
5. Determining Shims:
Compare "Measurement C" (Step 3.c.)
with "Measurement A" (Step 4.f.).
a. If C is greater than A, subtract: (C - A) = B
B =
to be installed at location B, Figure 4-4.

Rotor-to-Drive Ring

Location "B"
Shim Part Number
TM3467
TM3469
C4-4
Average
Shim pack thickness
Shim Thickness
0.004 inch
0.007 inch
Power Train
FIGURE 4-5. ALTERNATOR END-PLAY
1. Alternator Housing
2. Alternator Rotor
b. If A is greater than C, subtract: (A - C) = D
D =
to be installed at location D, Figure 4-4.

Alternator-to-Flywheel Housing Adapter

Location "D"
Shim Part Number
TM3466
TM3468
3. Steel Bar
4. Capscrew
Shim pack thickness
Shim Thickness
0.004 inch
0.007 inch
C04023 03/01