Crankshaft - wsm M6040 Workshop Manual

M6040, M7040, WSM

(4) 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 out of specifications because of the
crankshaft journal wear, replace it with an oversize one referring
to the table and figure.
Factory specification
Side clearance of
crankshaft
Allowable limit
(Reference)
• Oversize dimensions of crankshaft journal.
Oversize
41.10 to 42.10 mm
Dimension A
1.619 to 1.657 in.
28.20 to 28.25 mm
Dimension B
1.111 to 1.112 in.
2.8 to 3.2 mm radius
Dimension C
0.11 to 0.12 in. radius
The crankshaft journal must be fine-finished to higher than Rmax = 0.8S.
(A) Side Clearance of Crankshaft
Crankshaft Alignment
1. Support the crankshaft with V block on the surface plate and set
a dial indicator with its tip on the intermediate journal at right
angle.
2. Rotate the crankshaft on the V block and get the misalignment
(half of the measurement value).
3. If the misalignment exceeds the allowable limit, replace the
crankshaft.
Crankshaft alignment Allowable limit
1-S75
0.15 to 0.35 mm
0.0059 to 0.0138 in.
0.50 mm
0.0197 in.
0.20 mm 0.40 mm
0.0079 in. 0.016 in.
41.20 to 42.20 mm
1.622 to 1.661 in.
28.40 to 28.45 mm
1.1191 to 1.120 in.
2.8 to 3.2 mm radius
0.11 to 0.12 in. radius
9Y1210143ENS0120US0
0.02 mm
0.00079 in.
9Y1210143ENS0121US0
KiSC issued 07, 2012 A
ENGINE