Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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ENGINE MECHANICAL (G16 ENGINE) 6A1-73
Main bearing clearance
Check clearance by using gaging plastic according to following
procedure.
1) Remove bearing caps.
2) Clean bearings and main journals.
3) Place a piece of gaging plastic (1) to full width of bearing
(parallel to crankshaft) on journal, avoiding oil hole.
4) Install bearing cap as previously outlined and evenly toque
cap bolts to specified torque.
Bearing cap must be torqued to specification in order to
assure proper reading of clearance.
Tightening torque
Crankshaft bearing cap bolt
(a) : 54 N·m (5.4 kg-m, 39.0 lb-ft)
5) Remove cap and using scale (2) on gaging plastic (1) enve-
lope, measure gaging plastic width at its widest point. If
clearance exceeds its limit, replace bearing. Always replace
both upper and lower inserts as a unit.
A new standard bearing may produce proper clearance. If
not, it will be necessary to regrind crankshaft journal for use
of 0.25 mm (0.009842 in.) undersize bearing.
After selecting new bearing, recheck clearance.
Crankshaft bearing clearance
Standard : 0.02 – 0.04 mm (0.0008 – 0.0015 in.)
Limit : 0.060 mm (0.0023 in.)
NOTE:
Do not rotate crankshaft while gaging plastic is installed.