Suzuki RA410 Manual page 318

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3
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(a)
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Crank Pin and Connecting Rod Bearings
Inspect crank pin for uneven wear or damage. Measure crank
pin for out-of-round or taper with a micrometer. If crank pin is
damaged, or out-of-round or taper is out of limit, replace crank-
shaft.
Crank pin diameter : 37.982 – 38.000 mm (1.4954 – 1.4961 in.)
Out-of-round and taper limit: 0.01 mm (0.0004 in.)
Rod bearing:
Inspect bearing shells for signs of fusion, pitting, burn or flaking
and observe contact pattern. Bearing shells found in defective
condition must be replaced.
Rod bearing clearance:
1) Before checking bearing clearance, clean bearing and crank
pin.
2) Install bearing in connecting rod and bearing cap.
3) Place a piece of gaging plastic (1) to full width of crankpin as
contacted by bearing (parallel to crankshaft), avoiding oil
hole.
4) Install rod bearing cap (1) to connecting rod.
When installing cap, be sure to point arrow mark on cap (2)
to crankshaft pulley side (3), as shown in figure. After apply-
ing engine oil to rod bolts, tighten cap nuts to specified torque.
DO NOT turn crankshaft with gaging plastic installed.
Tightening Torque
.
(a): 33 N m (3.3 kg-m, 24.0 lb-ft)
ENGINE MECHANICAL 6A4-59