MARUTI SUZUKI Wagon R, Руководство пользователя

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Engine Mechanical: 1D-17
Connecting Rod Bearing Clearance
CAUTION
!
Do not rotate crankshaft while gauging
plastic is installed.
NOTE
After checking connecting rod bearing
clearance, check connecting rod bolt for
deformation referring to “Connecting rod
deformation” under “Piston Pins and
Connecting Rods Inspection”: .
1) Clean connecting rod bearings and crankshaft pin.
2) Place a piece of gauging plastic (1) to full width of
crankshaft pin as contacted by bearing (parallel to
crankshaft), avoiding oil hole.
3) Install connecting rod bearings and its cap. )
4) After three minutes elapsed, remove cap and using a
scale (2) on gauging plastic envelope, measure
gauging plastic (1) width at the widest point.
Connecting rod bearing clearance
Standard: 0.031 – 0.049 mm (0.0012 – 0.0019 in.)
Limit: 0.065 mm (0.0025 in.)
If measured oil clearance is less than standard value
or more than service limit, replace connecting rod
bearings with new ones referring to “Selection of
Connecting Rod Bearings”: , and recheck oil
clearance.
Depending on measured oil clearance with new
bearing, select other bearings according to the
following procedures, and recheck oil clearance.
• More than standard:
Replace bearings with one size thicker or regrind
crankshaft pin to under size and use 0.25 mm
(0.0098 in.) undersize bearings.
• Less than standard:
Replace bearings with one size thinner or regrind
crankshaft pin to under size and use 0.25 mm
(0.0098 in.) undersize bearings.
Selection of Connecting Rod Bearings
Standard size
1) Check connecting rod big-end inside diameter
according to the following procedures.
• There is stamped number (any of “1”, “2” or “3”) on
each connecting rod and it cap as shown in figure.
• That number represent connecting rod big-end
inside diameter as follows.
Connecting rod big-end inside diameter
2) Check crankshaft pin diameter according to the
following procedures.
• There are three stamped alphabets (any of “A”,
“B” or “C”) on crank web No.6 as shown in figure.
• Those alphabets represent crankshaft pin
diameter as follows.
Crankshaft pin diameter
1
I7V20A141100-01
1
2
I7V20A141101-01
Stamped
number
Connecting rod big-end inside diameter
1
41.0000 – 41.0060 mm
(1.61417 – 1.61440 in.)
2
41.0061 – 41.0120 mm
(1.61441 – 1.61464 in.)
3
41.0121 – 41.0180 mm
(1.61465 – 1.61488 in.)
1. Connecting rod big-end inside diameter number
2. Weight indication mark
Stamped alphabet Crankshaft pin diameter
A
37.9940 – 38.0000 mm
(1.49583 – 1.49606 in.)
B
37.9880 – 37.9939 mm
(1.49559 – 1.49582 in.)
C
37.9820 – 37.9879 mm
(1.49535 – 1.49558 in.)
2
1
I8T401142106-02