California Air Tools 3010 Service Manual Page 212

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9-22 CRANKSHAFT/CRANKCASE
Crankshaft and Connecting Rods
Check the crankshaft main journals and crankpins for
wear and taper.
Crankshaft Main Journal Diameter [A]
Standard: 41.976 42.000 mm (1.6526 1.6535 in.)
Crankshaft Crankpin Diameter [B]
Standard: 36.976 37.000 mm (1.4557 1.4567 in.)
Crankshaft Out of Round and Taper
Service Lim it: 0.02 mm (0. 0008 in.)
If the crankshaft main journals are not within specification,
the crankshaft may be re-ground and undersize bearing
inserts installed.
Undersize Crankshaft Main Bearing Inserts
0.25 mm (0.0 098 in.) Undersize
The final finishing dimensions should be as shown in the
table.
Finishing Dimensional Specifications
[A]
41.726 41.750 mm (1.6428 1.6437 in.)
[B]
36.726 36.750 mm (1.4459 1.4468 in.)
[C] R 2.5 mm (0.0984 in.)
[D]
R 2.1 mm (0.0827 in.)
Measure the crankshaft runout at #3 main journal.
If the measurement exceeds the service limit, replace the
crankshaft.
Crankshaft #3 Main Journal Runout
Service Limi t: 0.06 mm (0.0024 in.)
Visually inspect the crankshaft gear teeth [A].
Do the timing gear inspection procedure (see Timing Gear
Inspection).
If the crankshaft gear teeth are damaged or worn, replace
the crankshaft.
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