HEAD 1F7206 - Caterpillar

5 Thoroughly clean both sides of the 4N2104 Spacer Plate (1). Check the thickness of spacer plate (1); the thickness must be .338" .001" (8.59 0.03). If the spacer plate thickness is correct, use a 31/32" diameter 8 or 10 fluted reamer at a speed of 110 rpm to increase six holes (A) to a diameter of .968" .010" (24.6 0.3). 6 Remove all burrs (rough, sharp edges) at locations (B) of each hole (A). Use a steel stamp to mark the part number 7N624, a minimum of .19" (4.8) high, on the edge of the spacer plate at location (C), to let it be known that the reconditioning has been done and new seals and gaskets have been installed in the engine. 7 Install all cylinder liners (2) with new O-ring seals and a 9L5854 Filler Band (3). Check cylinder liner projection. See the Service Manual for procedure. Install the 7N631 Gasket (4) and 7N624 Spacer Plate (1) on the cylinder block. Install the gasket and spacer plate dry.
The top of the cylinder block and both sides of spacer plate (1) and gasket (4) must be clean and dry at installation.
8 Install the 7N632 Head Gasket (5), clean and dry, on the spacer plate. Put a 7N623 Seal (6) in each of the six holes (A) that were made larger in step 5. Install all other water seals and seals that are needed. Install cylinder head (7) and all head bolts (8). Tighten the head bolts according to the torque and procedure given in the Service Manual.9 Install the new radiator hoses, engine oil filter and all other parts that were removed. Put clean oil in the engine and fill the cooling system with the correct coolant.