C4.4 (Mech) Industrial Engine Caterpillar

Illustration 1	g00924764
Typical example

(1) Cylinder block

(2) Cylinder bore ... 105.000 to 105.025 mm (4.1338 to 4.1348 inch)

The maximum permissible wear for the cylinder bore ... 0 to 0.15 mm (0 to 0.0059 inch)

(3) Camshaft bearings

Diameter of the bore in the cylinder block for the number 1 camshaft bearing ... 55.56 to 55.59 mm (2.188 to 2.189 inch)

Diameter of the bore in the cylinder block for the number 2 camshaft journal ... 50.54 to 50.60 mm (1.990 to 1.992 inch)

Diameter of the bore in the cylinder block for the number 3 camshaft journal ... 50.038 to 50.090 mm (1.969 to 1.972 inch)

(4) Main bearings

Bore in the cylinder block for the main bearings ... 80.416 to 80.442 mm (3.1660 to 3.1670 inch)

(5) Main bearing cap bolts

Use the following procedure in order to install the main bearing cap bolts:

1. Apply clean engine oil to the threads of the main bearing cap bolts.

2. Put the main bearing caps in the correct position that is indicated by a number on the top of the main bearing cap. Install the main bearing caps with the locating tabs in correct alignment with the recess in the cylinder block.

3. Evenly tighten the main bearing cap bolts.

   Torque for the main bearing cap bolts. ... 245 N·m (180 lb ft)

Illustration 2	g00938203

Use the following procedure in order to install the allen head bolts for the bridge.

1. Use a straight edge in order to ensure that the bridge is aligned with the front face of the cylinder block.

2. Tighten allen head bolts (6) for the bridge.

   Torque for the allen head bolts ... 16 N·m (12 lb ft)

3. When the bridge is installed on the cylinder block, apply a thin bead of Tooling (A) into groove (7) at each end of the bridge.

   Note: The oil pan must be installed within 10 minutes of applying the sealant.

Total height of the cylinder block between the top and the bottom faces. ... 441.173 to 441.274 mm (17.3689 to 17.3729 inch)