PRESSURE CONTROL VALVE GROUP 1P4143 - Caterpillar

Removal Procedure
Start By:
Drain the cooling system. If the engine uses diesel engine antifreeze/coolant, refer to Operation and Maintenance Manual, "Cooling System Coolant (DEAC) - Change". If the engine uses extended life coolant, refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change".
Remove the turbocharger, if equipped. Refer to Disassembly and Assembly, "Turbocharger - Remove".
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.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00846894
Loosen the hose clamps for the water inlet and the water outlet. Remove the coolant hoses from the exhaust manifold (2) .
Remove the ten bolts (3) that secure the exhaust manifold to the cylinder head. Begin at the ends of the exhaust manifold and work toward the center.
Remove the exhaust manifold (2) from the cylinder head.
Remove gaskets (1) from the cylinder head. Discard the gaskets.Installation Procedure
Illustration 2 g00846894
Clean the flange face of the cylinder head. Install six M10 x 170mm studs into the cylinder head. Slide three new gaskets (1) onto the alignment bolts.Note: The gaskets for the exhaust manifold do not use a sealing compound.
Place the exhaust manifold (2) into position on the alignment bolts. Install the inlet hose and the outlet hose. Install the exhaust manifold into the final position.
Ensure that all of the bolts (3) are clean. Apply 9S-3263 Thread Lock Compound onto the threads of the bolts. Install the bolts into the holes that do not have the alignment bolts. Remove the alignment bolts and install the remainder of the bolts (3) .
Tighten the bolts. Begin at the center of the exhaust manifold and work toward the ends. Tighten the bolts to a torque of 52 N m (38 lb ft).End By:
Install the turbocharger, if equipped. Refer to Disassembly and Assembly, "Turbocharger - Install".
Fill the cooling system. If the engine uses diesel engine antifreeze/coolant, refer to Operation and Maintenance Manual, "Cooling System Coolant (DEAC) - Change". If the engine uses extended life coolant, refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change".