Suzuki GA413 Service Manual page 370

6A-64 ENGINE MECHANICAL
INSPECTION
Crankshaft
Crankshaft runout
Using a dial gauge, measure runout at center journal. Rotate
crankshaft slowly. If runout exceeds its limit, replace crankshaft.
Limit on runout: 0.06 mm (0.0023 in.)
Crankshaft thrust play
Measure this play with crankshaft set in cylinder block in the normal
manner, that is, with thrust bearing and journal bearing caps
installed.
1. Thrust bearing
Use a dial gauge to read displacement in axial (thrust) direction of
crankshaft.
If its limit is exceeded, replace thrust bearing with new standard
one or oversize one to obtain standard thrust play.
Crankshaft
thrust play
Thickness of crank-
shaft thrust bearing
Out-of-round and taper (uneven wear) of journals
An unevenly worn crankshaft journal shows up as a difference in
diameter at a cross section or along its length (or both). This differ-
ence, if any, is determined by taking micrometer readings.
If any one of journals is badly damaged or if amount of uneven wear
in the sense explained above exceeds its limit, regrind or replace
crankshaft.
Limit on out-of-round and taper: 0.01 mm (0.0004 in.)
Item Standard
0.11 – 0.31 mm
(0.0044 – 0.0122 in.)
Oversize:
Limit
0.38 mm
(0.0149 in.)
2.500 mm
Standard
(0.0984 in.)
0.125 mm 2.563 mm
(0.0049 in.) (0.1009 in.)