Crankshaft - wsm wg972-e4 Workshop Manual

WG972-E4, WSM

(5) Crankshaft

Crankshaft Side Clearance
1. Set a dial indicator with its tip on the end of the crankshaft.
2. Measure the side clearance by moving the crankshaft to the
front and rear.
3. If the measurement exceeds the allowable limit, replace the
thrust bearings.
4. If the same size bearing is useless because of the crankshaft
journal wear, replace it with an oversize one referring to the
table and figure.
Factory specification
Crankshaft side
clearance
Allowable limit
(Reference)
• Oversize thrust bearing
Oversize Bearing
Thrust bearing 1 02
0.2 mm
0.008 in.
Thrust bearing 2 02
Thrust bearing 1 04
0.4 mm
0.02 in.
Thrust bearing 2 04
• Oversize dimensions of crankshaft journal
0.2 mm
Oversize
0.008 in.
46.00 to 46.20 mm
Dimension A
1.811 to 1.818 in.
23.20 to 23.25 mm
Dimension B
0.9134 to 0.9153 in.
1.8 to 2.2 mm radius
Dimension C
0.071 to 0.086 in. radius
The crankshaft journal must be fine-finished to higher than Rmax = 0.8S
Crankshaft Alignment
1. Support the crankshaft with V blocks on the surface plate at
both end journals.
2. Set a dial indicator with its tip on the intermediate journal.
3. Measure the crankshaft alignment.
4. If the measurement exceeds the allowable limit, replace the
crankshaft.
Crankshaft alignment Allowable limit
1-S52
ENGINE
0.15 to 0.31 mm
0.0059 to 0.012 in.
0.50 mm
0.020 in.
Code Number Marking
15261-23950 020 OS
15261-23970 020 OS
15261-23960 040 OS
15261-23980 040 OS
0.4 mm
0.02 in.
46.10 to 46.30 mm
1.815 to 1.822 in.
23.40 to 23.45 mm
0.9213 to 0.9232 in.
1.8 to 2.2 mm radius
0.071 to 0.086 in. radius
9Y1211108ENS0091US0
0.02 mm
0.0008 in.
9Y1211108ENS0092US0
KiSC issued 07, 2015 A