SEAL-U-CUP 7Y4670 - Caterpillar

Removal Procedure
Start By:
Drain the coolant from the engine into a suitable container for storage or disposal. Drain the engine oil from the engine into a suitable container. Refer to the Operation and Maintenance Manual for the procedure on draining the engine coolant and the engine oil.
Remove the hose from the air filter to the integral air inlet. Refer to the OEM information for further details.
Remove the fuel priming pump. Refer to this Disassembly and Assembly Manual, "Fuel Priming Pump - Remove and Install".
Remove the pipe for the boost control, if equipped.
Remove the fuel injectors. Refer to this Disassembly and Assembly Manual, "Fuel Injector - Remove".
Remove the exhaust manifold. Refer to this Disassembly and Assembly Manual, "Exhaust Manifold - Remove and Install".
Remove the rocker shaft assembly and the pushrods. Refer to this Disassembly and Assembly Manual, "Rocker Shaft and Pushrod - Remove".
Remove the glow plugs. Refer to this Disassembly and Assembly Manual, "Glow Plugs - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g01039425
Typical example
Disconnect the harness assembly from the coolant temperature sensor (1).
Remove the setscrews (2). Remove the bypass tube (3) from the cylinder head. Remove the O-rings from the bypass tube (3).
Illustration 2 g01039487
Sequence for tightening the setscrews for the three cylinder engine
Refer to the illustration 2 for three cylinder engines. Gradually loosen the setscrews in the reverse numerical order. This will help prevent distortion of the cylinder head.
Remove the setscrews from the cylinder head. Note: The cylinder head is heavy. To avoid injury, take care when the cylinder head is lifted. Also take care not to damage the machined surfaces of the cylinder head during lifting and lowering the cylinder head.Note: Do not use a lever to separate the cylinder head from the cylinder block.
Place the cylinder head on a surface that will not scratch the face of the cylinder head.
Use a suitable lifting device and carefully lift the cylinder head off the cylinder block.
Remove the cylinder head gasket and discard the cylinder head gasket.
Note the location of the dowels in the cylinder block for installation purposes.