Cat 259B3 Crankshaft specifications
Cat 259B3 Crankshaft Specifications
Standard Main Crankshaft Journal Diameter 77.955 - 77.970 MM
Standard Rod Journal Diameter 57.955 - 57.970 MM
Oil Clearance Between Main Crankshaft Journal and Main Bearing 0.050-0.110 MM
Oil Clearance Between Rod Crankshaft Journal and Rod Bearing 0.030-0.090 MM
Deflection or Bend , Assembly Standard, 0.02 MM
Deflection or Bend , Repair Limit, 0.05 MM
Center to Center Distance Between Main Journal and Rod Journal, Assembly Standard, 60.00 MM
Center to Center Distance Between Main Journal and Rod Journal, Tolerance, plus or minus 0.04 MM
Parallelism Between Main Journal and Rod Journal, Tolerance, less than 0.01 MM
Circularity of Main Journal, Tolerance, less than 0.01 MM
Circularity of Rod Journal, Tolerance, less than 0.01 MM
Taper of Main Journal, Tolerance, less than 0.01 MM
Taper of Rod Journal, Tolerance, less than 0.01 MM
Filet Radius of Main Journal, Assembly Standard, 3.00 MM plus or minus 0.20 MM
End Play of Crankshaft, Assembly Standard 0.100 - 0.264 MM
(6) Flywheel To Crankshaft Bolts Size M12 x 1.25
(2) Flywheel To Crankshaft Dowel Pins
(1) Front Crankshaft Pulley Bolt Size M30 x 1.50
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Note: The early type 3044 CT engines had different compression ratios,
different pistons, and different crankshafts than the later type C3.4 engines. Some internal parts are different. Please give us your serial number so we can determine the correct parts for your engine.
Cat 259B3 Engine Parts
Heavy Equipment Restoration Parts LLC
4730 118th Ave
Fennville Michigan 49408 USA
Phone: 269 673 1638
Fax: 269 673 7226
email: EngineParts@HeavyEquipmentRestorationParts.com
alternate email: EngineParts2@gmail.com
Website: www.HeavyEquipmentRestorationParts.com