Table of Contents
Advertisement
ENGINE/ALTERNATOR MATING
Komatsu SSDA16V160 or SDA16V160 Engine
The following instructions must be followed to
ensure proper alignment and engine crankshaft
endplay. Failure to follow these instructions can
result in serious damage to the engine and/or
alternator.
General Instructions
• Never pry on the engine crankshaft damper!
• Loosen or remove fan belt prior to measuring
crankshaft end-play to insure that the crank-
shaft moves easily and completely.
• When taking measurements, always take four
equally spaced readings and average them.
• Always measure from mating surface to mating
surface.
• References to crankshaft rotation; clockwise
(CW), or counterclockwise (CCW), is the direc-
tion of rotation when looking at the front
(damper end) of engine.
• Crankshaft end-play for Komatsu SSDA16V160
or SDA16V160
Engine:
0.13 - 0.38 mm (0.005 - 0.015 in.).
SERVICE DATA - Eccentricity & Runout Limits
Description
Max. Flywheel Housing Bore
Eccentricity
Max. Face Runout, Flywheel
Housing
Max. Eccentricity of Flywheel
(Coupling Assembly)
Max. Axial Runout of Flywheel
Face (Coupling Assembly)
C04034
Measuring Procedure
1. Thoroughly clean the alternator housing mount-
ing surface, rotor drive adapter mounting sur-
face and flywheel housing adapter mounting
surfaces.
2. 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:
• Verify end play is within 0.13 - 0.38 mm (0.005 -
0.015 in.).
Record Total Crankshaft End-play:____________
3. Refer to Figure 4-5. Move the engine crank-
shaft to the rear of its end travel.
a. Carefully measure Dimension "C" at four
1st measurement:_________________________
2nd measurement: ________________________
3rd measurement: ________________________
4th measurement:_________________________
Dimension "C": ____________________ Average
b. Add 1/2 (one-half) of Total End-play (Step 2).
c. Record (a + b) as;
"Measurement C":_________________________
T.I.R.
0.66 mm
(0.026 in.)
0.25 mm
(0.010 in.)
0.18 mm
1. Alternator Housing
(0.007 in.)
2. Alternator Rotor
3. Flywheel Housing
0.25 mm
(0.010 in.)
Adapter
4. Flywheel Housing
5. Engine Drive Ring
Power Train
locations, 90° apart:
FIGURE 4-5. SHIM LOCATION
"A": Dimension "A"
"B": Dimension "B"
"C": Dimension "C"
"D": Dimension "D"
C4-5
Advertisement
Chapters
Table of Contents
