CAMSHAFT AS 3131953 - Caterpillar

Remove & Install Camshaft Bearings
Start By:a. remove camshaftb. remove flywheel housingc. remove pistons and connecting rod assembliesd. remove timing gears and plate 1. Use tool (A) to remove the camshaft bearings from the cylinder block starting with the rear bearing. The following steps are for the installation of the camshaft bearings.2. Use tooling (A) to install the camshaft bearings in the cylinder block.3. All camshaft bearings must be installed so that the holes in the bearings are 90° 15° from the oil holes in the cylinder block. Make sure the bearing joint position is above the oil holes. 4. The installation depth of dimension A of the front bearing from the front face of the block is 2.8 0.5 mm (.11 .02 in.).5. Install the remainder of the bearings to the dimensions given from the front face of the block: B. 181.9 0.5 mm (7.16 .02 in.), C. 353.3 0.5 mm (13.91 .02 in.), D. 524.8 0.5 mm (20.66 .02 in.), E. 696.2 0.5 mm (27.41 .02 in.), F. 867.7 0.5 mm (34.16 .02 in.), G. 1039.1 0.5 mm (40.91 .02 in.). 6. After assembly, the inside diameter of bearings (1) must be 69.969 0.048 mm (2.7500 .0019 in.). The remainder of the bearing must have an inside diameter of 69.982 0.061 mm (2.7552 .0024 in.).End By:a. install timing gears and plateb. install camshaftc. install pistons and connecting rod assembliesd. install flywheel housing