Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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6A4-92 ENGINE MECHANICAL (J20 ENGINE)
• If necessary, regrind crankshaft journal and select under-
size bearing to use with it as follows.
a) Regrind journal to following finished diameter.
Finished diameter of crankshaft journal
57.7439 – 57.7560 mm (2.2734 – 2.2738 in.)
b) Using micrometer, measure reground journal diameter.
Measurement should be taken in two directions perpendic-
ular to each other in order to check for out-of-round.
c) Using journal diameter measured above and alphabets
stamped on lower crankcase, select an undersize bearing
by referring to table given below.
Check bearing clearance with newly selected undersize
bearing.
Crankshaft undersize bearing specification
Oil Pump Sprocket
• Check teeth of sprocket (2) for wear or damage.
If any damage or wear is found, replace crankshaft (1).
Oil Pump Drive Chain
• Check oil pump drive chain for wear or damage.
Measured journal diameter
57.7500 – 57.7560 mm
(2.2737 – 2.2738 in.)
57.7440 – 57.7499 mm
(2.2734 – 2.2736 in.)
57.7380 – 57.7439 mm
(2.2732 – 2.2733 in.)
Alphabets stamped
on lower crankcase
A Green & Red Black & Red Red only
B Black & Red Red only Yellow & Red
C Red only Yellow & Red Blue & Red
Undersize bearing to be installed