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Crank drive, cylinder block A16XER, Z16XER
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Illustration
| 1. |
Main bearing journal |
| 2. |
Con-rod bearing journal |
| 3. |
3 Main Bearing Journals (Guide Bearing) |
| 4. |
Crankshaft colour code |
| 5. |
Bearing shell colour code |
| 6. |
Bearing shell identification |
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Illustration
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A 16 XER, Z 16 XER:
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1
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Cylinder block production date
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2
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Index identification for cylinder bore of cylinder 1
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3
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Index identification for cylinder bore of cylinder 2
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4
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Index identification for cylinder bore of cylinder 3
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5
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Index identification for cylinder bore of cylinder 4
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6
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Index-identification of crankshaft bearing shell mount in
cylinder block
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Engine
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A 16 XER, Z 16 XER
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Crankshaft dimensions
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Ø Main bearing journal
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Colour code
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1 – 5
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Standard size
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mm
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54.991- 54.997
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brown
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mm
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54.980 - 54.991
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green
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Ø Con-rod bearing journal
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1 – 4
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Standard size
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mm
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42.971 – 42.987
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-
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Engine
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A 16 XER, Z 16 XER
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Crankshaft bearing
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Lower crankshaft bearing shell
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1, 2, 4, 5
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Colour code
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Thickness
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Identification
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GM 74, GM 985, GM 15
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Standard size
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mm
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brown
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1.987 – 1.993
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256 N
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mm
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green
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1.993 – 1.999
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257 N
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Perm. crankshaft bearing play
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mm
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0.017 - 0.047
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Perm. crankshaft end play
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mm
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0.100 – 0.202
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Engine
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A 16 XER, Z 16 XER
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3 crankshaft bearings
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Lower crankshaft bearing shell
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(guide bearing)
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Colour code
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Thickness
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Identification
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GM 74, GM 985, GM 15
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Standard size
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mm
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brown
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1.987 – 1.993
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859 N
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mm
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green
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1.993 – 1.999
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860 N
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Engine
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A 16 XER, Z 16 XER
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Con-rod bearing
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Lower con-rod bearing shell
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Colour code
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Thickness
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Identification
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GM 985.3
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Standard size
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mm
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-
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1.489 - 1.497
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264 N
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Upper con-rod bearing shell
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Standard size
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mm
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-
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1.489 - 1.497
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264 N
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Perm. con-rod play
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mm
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0.018 - 0.064
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Illustration
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1
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Index – identification of cylinder bore
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2
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Cylinder Bore
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3
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Double bevelled ring with spiral-type expander
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4
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Tapered compression ring or double trapezoidal ring
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5
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Rectangular compression ring
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6
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Piston diameter
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Engine
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A 16 XER, Z 16 XER
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Ø Cylinder bore
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Standard size
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Index 00
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mm
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78.992 - 79.008
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Ø Piston
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Standard size
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Index 00
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mm
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78.943 - 78.957
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Piston play
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mm
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0.035 - 0.065
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Engine
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A 16 XER, Z 16 XER
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Piston Rings
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Rectangular compression ring
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Height
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mm
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1.175 - 1.190
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Gap
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mm
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0.25 - 0.50
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Vertical play
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mm
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0.035 - 0.080
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Tapered compression ring
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Height
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mm
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1.170 - 1.195
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Gap
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mm
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0.25 - 0.50
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Vertical play
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mm
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0.035 - 0.070
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Oil scraper ring
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Height
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mm
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1,850
- 1.990
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Gap
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mm
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0.25 – 0.75
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Vertical play
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mm
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0.020 - 0.180
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Ring gap distribution
1)
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°
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120
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Engine
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A 16 XER, Z 16 XER
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Piston Pins
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Length
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mm
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55
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Diameter
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mm
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19.000 - 19.005
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Bearing
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Floating-mounted con-rod
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Play
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in piston
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mm
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0.004 - 0.015
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in con-rod
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mm
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0.007 - 0.020
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1 ) Arrange gap of upper oil scraper ring 25 to 50
mm offset to the left and gap of the lower ring 25 to 50 mm offset
to the right relative to the gap of the lower intermediate ring.
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