RING-SEAL 7G4817 - Caterpillar

Remove & Install Cylinder Head Assembly
Start By:a. remove rocker shaft assemblies and push rodsb. remove water temperature regulatorc. remove fuel injection linesd. remove exhaust manifold Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates.1. Remove the inlet manifold from the cylinder head. 2. Remove bolts (1) from the alternator bracket.3. Remove the bolts that hold plate (3), and remove the plate.4. Disconnect water line (2) from the air compressor. Turn the water line tee toward the lifting bracket in order to provide clearance to remove the head bolt. 5. Remove bolts (4) and (5) that hold the cylinder head assembly to the cylinder block.6. Fasten a hoist, and remove the cylinder head assembly. The weight is approximately 135 kg (300 lb).
Do not put the cylinder head assembly down on a flat surface. This can cause damage to the fuel injection valves.
7. Remove the gasket, seals (6) and O-ring seals (7) from the spacer plate. The following steps are for installation of the cylinder head. Be sure a new gasket has been installed between the spacer plate and the cylinder block. See the topic "Remove & Install Spacer Plate".8. Thoroughly clean the spacer plate and the bottom surface of the cylinder head assembly. Install a new head gasket, new seals (6) and two O-ring seals (7).9. Fasten a hoist, and put the cylinder head assembly in position on the cylinder block.
(1) Large bolts (3/4 inch). Put 6V-4876 Molycoat Paste Lubricant on bolt threads and between washers and underside of bolt heads. (2) Small bolts (3/8 inch). See Step h.10. Install the cylinder head bolts and washers. Tighten the bolts in sequence shown.a. Tighten bolts 1 through 14 in number sequence to 270 25 N m (200 20 lb ft).b. Tighten bolts 1 through 14 in number sequence to 470 20 N m (345 15 lb ft).c. Tighten bolts 1 through 14 in number sequence again to 470 20 N m (345 15 lb ft).d. Install the rocker arm shafts for the engine valves and the remaining (3/4 in) bolts and/or compression brake studs.e. Tighten bolts 15 through 26 in number sequence to 270 25 N m (200 20 lb ft).f. Tighten bolts 15 through 26 in number sequence to 450 20 N m (330 15 lb ft).g. Tighten bolts 15 through 26 in number sequence again to 450 20 N m (330 15 lb ft).h. Tighten the thirteen small bolts (2) to 45 7 N m (33 5 lb ft). If the studs for the exhaust manifold were removed, install new studs,