HEAD 1U1145 - Caterpillar

Illustration 1 g02601037
Illustration 2 g02603416
Illustration 3 g02603456
Cut cable strap (2) and cable strap (7) from plastic tube assembly (1).
Remove plastic tube assembly (1) from the crankcase breather canister. Refer to Disassembly and Assembly, "Crankcase Breather - Remove" for the correct procedure.
Disconnected harness assembly (3) from the fuel temperature sensor. Refer to Disassembly and Assembly, "Fuel Temperature Sensor- Remove and Install" for the correct procedure.
Disconnected harness assembly (4) from the engine oil pressure sensor. Refer to Disassembly and Assembly, "Engine Oil Pressure Sensor - Remove and Install" for the correct procedure.
Cut cable straps (5) from harness assembly for crankshaft position sensor (6) (not shown). Disconnect the harness assembly from crankshaft position sensor (6) (not shown). Refer to Disassembly and Assembly, "Crankshaft Position Sensor - Remove and Install" for the correct procedure.
Cut cable straps (8) from harness assembly for camshaft position sensor (9) (not shown). Disconnect the harness assembly from camshaft position sensor (9) (not shown). Refer to Disassembly and Assembly, "Camshaft Position Sensor - Remove and Install" for the correct procedure.
Disconnect harness assembly (10) from atmospheric pressure sensor (10). Refer to Disassembly and Assembly, "Atmospheric Pressure Sensor - Remove and Install" for the correct procedure.
Illustration 4 g02467198
Disconnect plastic tube assembly (12) and plastic tube assembly (15) from tube assembly (13). Use Tooling (A) in order to plug the plastic tube assemblies and to cap the tube assembly.
Disconnect hose assembly (17) from connection on tube assembly (13). Remove O-ring seal (18) (not shown). Use Tooling (A) in order to plug the hose assembly and to cap the tube assembly.
Use a suitable tool in Position (X) in order to hold tube assembly (13) as nut (19) is loosened. Remove bolt (14) from tube assembly (13).
Remove tube assembly (13) from the bracket and the cylinder head.
Remove O-ring seal (19) (not shown) from tube assembly (13).
Use Tooling (A) in order to plug the cylinder head and to cap the tube assembly.
Illustration 5 g02466856
Cut cable straps (20) from engine harness assembly. Ensure that all the cable straps are removed.
Loosen bolt (25) and remove bolt from Electronic Control Module (ECM) plug (21).
Loosen the allen head bolt (23) that secures ECM plug (21) for engine harness assembly (27) to ECM (29). Disconnect the engine harness assembly from the ECM.
Position engine harness assembly (27) away from the ECM.
Loosen bolt (26) and remove the bolt from Original Equipment Manufacture (OEM) plug (22).
Loosen the allen head bolt (24) that secures OEM plug (22) for the OEM harness assembly (28) to ECM (29). Disconnect the OEM harness assembly from the ECM.
Position OEM harness assembly (28) away from the ECM.
Illustration 6 g02466957
Make temporary identification marks on the plastic tube assembly (38), plastic tube assembly (39) in order to show the correct position of the plastic tube assemblies.
Place a suitable container below the ECM (29) in order to catch any fuel that might be spilled.
Disconnect plastic tube assembly (38) and plastic tube assembly (39). Drain the fuel from ECM (29).
Use Tooling (A) in order to plug plastic tube assembly (38) and plastic tube assembly (39).
Use Tooling (A) in