Aerostar 2WD V6-183 3.0L (1991)
Crankshaft: Specifications
Rebuild Specifications
Main Bearing Journal Diameter ............................................................................................................................. 63.983-64.003 mm (2.5190-2.5198 in.)
Main Bearing Journal Out-of-Round Limit ...................................................................................................................................... 0.008 mm (0.0003 in.)
Main Bearing Journal Taper Limit ....................................................................................................................................... 0.06 mm (0.0006 in.) TOTAL
0.013 mm (0.0003 in.) per 25 mm (1 in.)
Main Bearing Journal Runout Limit
Runout of journals 2 and 3 to journals 1 and 4 ........................................................................................................................... 0.05 mm (0.002 in.)
Runout of adjacent journals to each other .................................................................................................................................. 0.05 mm (0.002 in.)
Surface Finish (RMS) ..................................................................................................................................................... 0.25 micrometers (10.0 micro in.)
Thrust Bearing Journal Length ................................................................................................................................ 25.775-25.825 mm (1.0148-1.067 in.)
Main Bearings Clearance to Crankshaft (Desired) ......................................................................................................... 0.025-.035 mm (0.001-0.0014 in.)
Main Bearings Clearance to Crankshaft (Allowable) .................................................................................................... 0.020-.066 mm (0.00050.0023 in.)
Main Bearing Wall Thickness (Std.) ............................................................................................ 2.444-2.481 mm (0.0962-0.0976 in.) 1st and 2nd
Main Bearing Wall Thickness (Std.) .......................................................................................... 2.491-2.427 mm (0.0980-0.0956 in.) 3rd and Rear