ENGINE AR-PRIM 10R7921 - Caterpillar

1. Use a magnet (1) to remove valve lifters (2).2. Check the diameter of the valve lifter. The diameter of the valve lifter (new) must be 33.287 0.013 mm (1.3105 .0005 in.). The bore in the block for new valve lifters must be 33.388 0.025 mm (1.3145 .0010 in.). The maximum permissible clearance between the lifter and the bore for the valve (worn) is 0.30 mm (.012 in.). If the original lifters are to be installed in the engine, make sure they are installed in their original locations.3. Put clean engine oil on the valve lifters and the lobes of the camshaft.4. Use a magnet to install the valve lifters in the cylinder block.end by:a) install rocker shaft and push rods