Komatsu 830E Shop Manual page 109

Joining Alternator and Komatsu SSDA16V160 or
SDA16V160 Engine
When lifting alternator, attach hoist to lift eyes
only. The alternator weighs approximately 7,700
lbs. (3493 kg). Use a lifting device that can handle
the load safely.
1. Use the two top lift brackets provided on the
alternator for lifting. The top front lifting bracket
should be equipped with some method of
adjusting the alternator to keep it horizontal.
2. Carefully move alternator into place and engage
the engine drive ring (6, Figure 4-7) into the
alternator rotor drive (7) using shims "B", if
required (refer to step 5.a. "Determining
Shims").
3. Install flywheel housing adapter capscrews (2)
into alternator housing (1). Tighten to 175 ft.
lbs. (237 N.m) torque.
4. Install capscrews (5) through engine drive ring
(6) into the alternator rotor adapter (7). Rotate
crankshaft to access and align holes. Tighten
capscrews (5) to 175 ft. lbs. (237 N.m) torque.
5. Install alternator-to-cradle structure mounting
capscrews and washers (1, Figure 4-2) and
tighten to 750 ft. lbs. (1017 N.m) torque.
6. Tighten engine-to-cradle structure mounting
capscrews (3, Figure 4-2) to 345 ft. lbs. (465
N.m) torque.
Never pry on the engine crankshaft damper!
7. With magnetic base mounted on the front of the
engine and the dial indicator on the front of the
crankshaft, measure total crankshaft end-play:
Record Total Crankshaft End-play: ____________
8. Compare the step 7 value to the measurement
taken before alternator was installed on engine.
C04026 4/03
FIGURE 4-7. ALTERNATOR TO ENGINE
1. Alternator Housing
2. Capscrew
3. Flywheel Housing
Adapter
4. Engine Flywheel
Housing
The total Engine Crankshaft End-play (step 7)
must equal the original measurement or 0.020 in.
(0.51 mm) (alternator end-play), whichever is
smaller. If the end-play after the alternator and
engine are assembled is less than 0.020 in. (0.51
mm), and less than the starting engine crank-
shaft end-play, RESHIMMING IS REQUIRED.
9. Rotate the crankshaft one full revolution and lis-
ten for any unusual noise caused by moving
components contacting stationary parts.
10. Install engine sidecover, if removed. Install lock-
wire on all alternator mounting capscrews.
11. Remove barring tool and install access covers
on flywheel housing.
12. Reinstall fan belt. Refer to engine manufac-
turer's Operation and maintenance Manual.
Power Train
MOUNTING
5. Capscrew
6. Engine Drive Ring
7. Alternator Rotor
"B" Drive Shims
"D" Housing Shims
C4-5