wheel size SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

1 or 2
Piston
No.1 Cylinder
No.2 Cylinder
No.3 Cylinder
No.4 Cylinder
Crank
pulley
side
Flywheel
side
6A1-60 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
5) Remove cap and using a scale (2) on gaging plastic (1) enve-
lope, measure gaging plastic width at the widest point (clear-
ance).
If clearance exceeds its limit, use a new standard size bearing
and remeasure clearance.
Item
StandardLimit
Bearing
clearance0.020 – 0.050 mm
(0.0008 – 0.0019 in.)0.080 mm
(0.0031 in.)
6) If clearance can not be brought to within its limit even by using
a new standard size bearing, regrind crankpin to undersize
and use 0.25 mm undersize bearing.
ASSEMBLY
NOTE:
Two sizes of piston are available as standard size spare part
so as to ensure proper piston-to-cylinder clearance. When
installing a standard size piston, make sure to match piston
with cylinder as follows.
a) Each piston has stamped number 1 or 2 as shown. It represents
outer diameter of piston.
b) There are also stamped numbers of 1 and 2 on the cylinder block
as shown. The first number represents inner diameter of No.1
cylinder, the second number of No.2 cylinder, the third number
of No.3 cylinder and the fourth number of No.4 cylinder.

1. Gaging plastic
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-71
Main Bearings
General information

Service main bearings are available in standard size and 0.25
mm (0.0098 in.) undersize, and each of them has 5 kinds of bear-
ings differing in tolerance.

Upper half of bearing (2) has oil groove (3) as shown in figure.
Install this half with oil groove to cylinder block (1).

On each main bearing cap, arrow mark and number are em-
bossed as shown in figure.
When installing each bearing cap to cylinder block, point arrow
mark toward crankshaft pulley side and install each cap from that
side to flywheel side in ascending order of numbers “1”, “2”, “3”,
“4” and “5”. Tighten cap bolts to specified torque.
Inspection
Check bearings for pitting, scratches, wear or damage.
If any malcondition is found, replace both upper and lower halves.
Never replace one half without replacing the other half.
Main bearing clearance
Check clearance by using gaging plastic (1) according to the follow-
ing procedure.
1) Remove bearing caps.
2) Clean bearings and main journals.
3) Place a piece of gaging plastic 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
(a): 54 N
.m (5.4 kg-m, 39.0 lb-ft)
NOTE:
Do not rotate crankshaft while gaging plastic is installed.

“a”: 23 mm (0.91 in.)
6A1-76 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
Flywheel

If ring gear is damaged, cracked or worn, replace flywheel.

If the surface contacting clutch disc is damaged, or excessively
worn, replace flywheel.

Check flywheel for face runout with dial gauge.
If runout exceeds its limit, replace flywheel.
Limit on runout: 0.2 mm (0.0078 in.)
Cylinder Block
Distortion of gasketed surface
Using straightedge and thickness gauge, check gasketed surface
for distortion and, if flatness exceeds its limit, correct it.
Item
StandardLimit
Flatness0.03 mm
(0.0012 in.)0.06 mm
(0.0024 in.)
Honing or reboring cylinders
1) When any cylinder needs reboring, all other cylinders must also
be rebored at the same time.
2) Select oversized piston according to amount of cylinder wear.
Size
Piston diameter
O / S 0.2574.220 – 74.230 mm
(2.9220 – 2.9224 in.)
O / S 0.5074.470 – 74.480 mm
(2.9319 – 2.9323 in.)
3) Using micrometer, measure piston diameter.
4) Calculate cylinder bore diameter to be rebored.
D = A + B – C
D: Cylinder bore diameter to be rebored.
A: Piston diameter as measured.
B: Piston clearance = 0.02 – 0.04 mm
(0.0008 – 0.0015 in.)
C: Allowance for honing = 0.02 mm (0.0008 in.)