Suzuki Wagon R Plus RB310, Service Manual

Page: 426 / 846

ENGINE MECHANICAL (M13 ENGINE) 6A2-87
5) Remove bearing caps and using scale (1) on gaging plastic
(2) envelop, 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 (0.0098 in.) undersize bearing.
After selecting new bearing, recheck clearance.
Main bearing clearance
Standard: 0.025 – 0.045 mm (0.0010 – 0.0017 in.)
Limit: 0.058 mm (0.0023 in.)
Selection of main bearings
Standard bearing
If bearing is in malcondition, or bearing clearance is out of specifi-
cation, select a new standard bearing according to the following
procedure and install it.
1) First check journal diameter. As shown in figure, crank web
No.2 has stamped numbers.
Three kinds of numbers (“1”, “2” and “3”) represent the fol-
lowing journal diameters.
Stamped numbers on crank web No.2 represent journal
diameters marked with an arrow in figure respectively.
For example, stamped number “1” indicates that correspond-
ing journal diameter is 44.9940 – 45.0000 mm (1.7715 –
1.7716 in.).
Crankshaft journal diameter
Stamped
numbers
Journal diameter
1 44.9940 – 45.0000 mm (1.7715 – 1.7716 in.)
2 44.9880 – 44.9939 mm (1.7712 – 1.7714 in.)
3 44.9820 – 44.9879 mm (1.7710 – 1.7711 in.)