MARUTI SUZUKI Wagon R, Manual

Page: 142 / 240

1D-16 Engine Mechanical:
Crankshaft Pin and Connecting Rod Bearings
Inspection
AENAR90A1406037
NOTE
For identification of each cylinder, refer to
“Cylinder Identification Description: Petrol
model” in Section 1A in related manual
mentioned in the Foreword of this manual or
“Cylinder Identification Description”: in
Section .
Crankshaft Pin Diameter
• Using micrometer, measure crankshaft pin diameter
at several points and calculate taper and out-of-round
conditions.
If calculated taper and/or out-of-round is out of their
service limit, replace crankshaft or regrind crankshaft
pin to undersize and use undersize bearing.
CAUTION
!
If crankshaft pin is regrind, new undersize
bearings must be installed and bearing
clearance must be checked.
Crankshaft pin diameter
Standard: 37.982 – 38.000 mm (1.49535 – 1.49606 in)
Crankshaft pin taper ([a] –[b]) and out-of-round ([1]
–[2])
Limit: 0.01 mm (0.0003 in.)
Connecting Rod Bearing General Information
• Service connecting rod bearings are available in five
standard sizes and 0.25 mm (0.0098 in.) undersize
bearing. The difference of those sizes is thickness.
• Specified colors for identification of sizes are painted
at specified location (1) as shown in figure.
Connecting Rod Bearing Visual Inspection
Check bearing shells for signs of fusion, pitting, burn or
flaking and observe contact pattern. If abnormality is
found, replace connecting rod bearings.
1. Front mark 4. 2nd ring end gap and oil ring spacer gap
2. Oil ring upper rail gap 5. Oil ring lower rail gap
3. 1st ring end gap 6. 45°
I7V20A141094-01
Painted
color
Bearing thickness
Standard size
Blue
1.4981 – 1.5010 mm
(0.05898 – 0.059094 in.)
Yellow
1.4951 – 1.4980 mm
(0.05886 – 0.05897 in.)
Colorless
1.4921 – 1.4950 mm
(0.05874 – 0.05885 in.)
Black
1.4891 – 1.4920 mm
(0.05863 – 0.05874 in.)
Green
1.4860 – 1.4890 mm
(0.05850 – 0.05862 in.)
0.25 mm
(0.0098 in.)
undersize
Red
1.6050 – 1.6150 mm
(0.06319 – 0.06358 in.)
[a] [b] [1]
[2]
I8C50A140066-01
I2RH01140164-01