COVER-BEARING 3156505 - Caterpillar

Illustration 1 g01568759Bore diameter in the cylinder block for the cylinder liner: (A) ... 151.50 0.03 mm (5.965 0.001 inch) (B) ... 149.80 0.30 mm (5.898 0.012 inch) (C) ... 148.00 0.03 mm (5.827 0.001 inch) (D) ... 141.90 0.05 mm (5.587 0.002 inch)
Illustration 2 g01568760
Front view
(2) Bolt for the piston cooling jet (E) Diameter of the camshaft bore ... 85.000 0.015 mm (3.3465 0.0006 inch) (F) Distance from the centerline of the crankshaft bore to the top surface of the cylinder block ... 387.00 mm (15.236 inch) (G) Bore in the cylinder block for the main bearing ... 116.000 0.013 mm (4.5669 0.0005 inch) (H) Distance from the centerline of the crankshaft to the bottom surface of the cylinder block ... 120.0 mm (4.72 inch) (J) Dimensions of main bearing cap Width of the main bearing cap ... 178.000 0.020 mm (7.0079 0.0008 inch)Width in cylinder block for the main bearing cap ... 178.000 0.023 mm (7.0079 0.0009 inch) (1) Apply Loctite 574 to the bore of three cup plugs. Use the following procedure in order to tighten the main bearing cap bolts (3) :
Orient the main bearing cap correctly. The part number on the main bearing cap must face to the right and to the front face of the block. Also, the tab slots that are in the block and the main bearing caps must be adjacent. Note: The main bearing caps are marked with identification numbers 1 through 7. Install the main bearing caps into the correct positions.
Lubricate the main bearing cap bolts. Use SAE 30W oil or molybdenum grease to lubricate the threads and the washer face.
Tighten the main bearing cap bolts to 150 5 N m (110 4 lb ft).
Rotate each main bearing cap bolt in the clockwise direction for additional 60 5 degrees.
Illustration 3 g01568764Install the camshaft bearings into the cylinder block at the location that is specified. The distance that is listed below is measured from the front face of the cylinder block. (K) ... 972.50 mm (38.287 inch) (L) ... 816.50 mm (32.146 inch) (M) ... 660.50 mm (26.004 inch) (N) ... 504.50 mm (19.862 inch) (P) ... 348.50 mm (13.720 inch) (R) ... 192.50 mm (7.579 inch) (S) ... 36.50 mm (1.437 inch)
Camshaft bearings must be installed into their correct position. Failure to do so will result in engine damage.
Illustration 4 g01352353
(4) Bearing joint
(5) Oil hole (T) Bearing oil hole is located at the 45 degrees angle from vertical. All seven bearings have the same angle.