C04034 Power Train C4-7
Joining Alternator and Komatsu SSDA16V160 or
SDA16V160 Engine
When lifting alternator, attach hoist to lift eyes
only. The alternator weighs approximately 4037
kg (8,900 lbs). 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 cap screws (2)
into alternator housing (1). Tighten to 237 N·m
(175 ft lbs) torque.
4. Install cap screws (5) through engine drive ring
(6) into the alternator rotor adapter (7). Rotate
crankshaft to access and align holes. Tighten
cap screws (5) to 237 N·m (175 ft lbs) torque.
5. Install alternator-to-cradle structure mounting
cap screws and washers (1, Figure 4-2) and
tighten to 1017 N·m (750 ft lbs) torque.
6. Tighten engine-to-cradle structure mounting
cap screws (3, Figure 4-2) to 465 N·m (345 ft
lbs) 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.
The total Engine Crankshaft End-play (step 7)
must equal the original measurement or 0.51 mm
(0.020 in.) (alternator end-play), whichever is
smaller. If the end-play after the alternator and
engine are assembled is less than 0.51 mm (0.020
in.), and less than the starting engine crankshaft
end-play, RESHIMMING IS REQUIRED.
FIGURE 4-7. ALTERNATOR TO ENGINE
MOUNTING
1. Alternator Housing
2. Cap Screw
3. Flywheel Housing
Adapter
4. Engine Flywheel
Housing
5. Cap Screw
6. Engine Drive Ring
7. Alternator Rotor
“B” Drive Shims
“D” Housing Shims
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