Ranger 2WD V6-245 4.0L VIN X SFI (1997)
Crankshaft Main Bearing: Specifications
DIMENSIONS
Main Bearing Thrust Face
Surface Finish ............................................................................................................................................................................................... 20 Max.
Runout (T.I.R.) ................................................................................................................................................................................... 0.001 inch Max.
Main Bearing Clearance to Crankshaft
Desired ......................................................................................................................................................................................... 0.0008-0.0015 inch
Allowable ..................................................................................................................................................................................... 0.0005-0.0019 inch
Bearing Wall Thickness (Std.)(1)
Std. ................................................................................................................................................................................................ 0.0708-0.0711 inch
Yellow ........................................................................................................................................................................................... 0.0712-0 0715 inch
(1) 0.002 inch Undersize = add 0.001 inch to standard thickness.
TIGHTENING SPECIFICATIONS
NOTE: Lightly oil all attaching bolt and stud threads before installation, except those specifying special sealant.
-
Place crankshaft upper main bearings in position in the bores with the tang fitting in the slot provided. Lubricate bearings with SAE 50 Service SO
oil.
-
Install the lower main bearings in the bearing caps.
-
Lower crankshaft into place. Use care to prevent damage to bearing surfaces.
-
Check clearance of each main bearing.
-
After crankshaft main bearings have been fitted, apply SAE 50 Service SO oil to the journals and bearings.
-
Install all bearings and caps except thrust bearing cap (No.3 bearing). MAKE SURE MAIN BEARING CAPS ARE INSTALLED IN THEIR
ORIGINAL POSITION. Tighten bearing caps to 90-104 Nm (66-77 ft. lbs.).
NOTE: Apply Silicone Rubber D6AZ-19562-BA meeting Ford specifications ESB-M4G92 and ESE-M4G195-A or equivalent in a 1.59 mm
(1/16-inch) bead in each corner of rear main bearing cap saddle, the full length of the saddle.
-
Install thrust bearing cap (No.3) with bolts finger-tight.
-
Pry crankshaft forward against thrust surface of upper half of bearing.
-
Hold crankshaft forward and pry thrust bearing cap to the rear. This will align thrust surfaces of both halves of the bearing.
-
Retain forward pressure on crankshaft. Tighten No.3 cap bolts to specification.
