Suzuki Jimny Service Manual page 565

6A1-84 ENGINE MECHANICAL (M13 ENGINE)
5) Remove bearing caps and using scale (1) on gauging plastic
(2) envelop, measure gauging 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 undersize bearing.
After selecting new bearing, recheck clearance.
Main bearing clearance
Standard : 0.025 – 0.045 mm (0.0010 – 0.0018 in.)
Limit : 0.065 mm (0.0026 in.)
NOTE:
After checking the bearing clearance, check for thread
deformation of each bearing cap No.1 bolt according to
previous mentioned Step 4) once again.
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 44.994 – 45.000 mm (1.7714 –
1.7717 in.).
Crankshaft journal diameter
Stamped numbers
1
2
3
Journal diameter
44.994 – 45.000 mm
(1.7714 – 1.7717 in.)
44.988 – 44.994 mm
(1.7712 – 1.7714 in.)
44.982 – 44.988 mm
(1.7709 – 1.7712 in.)