VALVE GP-TILT CONTROL 4T1640 - Caterpillar

1. Remove coolant from the engine.2. Remove pipe (1) from between the turbocharger and the cover assembly. 3. Loosen clamps (5) and remove oil breather cap (4).4. Loosen clamp (6) and remove bar (2) and the bolts that fasten tube assembly (3) to the aftercooler cover assembly. Remove tube assembly (3). 5. Remove O-ring seal (7) from tube assembly. 6. Remove adapter (8) and gasket from the aftercooler housing. An O-ring seal on each end of the aftercooler core holds adapters (8) and (11) in position. 7. Remove four bolts that fasten tube assembly (9) from the oil cooler bonnet to the aftercooler housing. Loosen hose clamp on the opposite end of tube assembly and remove tube assembly (9) from the aftercooler housing. 8. Remove O-ring seal (10) from the tube assembly. 9. Remove adapter (11) and gasket and disconnect tube assembly (12) from the air fuel ratio control. 10. Remove two bolts (13) that fasten the cover assembly to the housing. 11. Remove the remainder of bolts (15) and cover assembly (14) from the housing. 12. Remove aftercooler core assembly (16) and gasket from the housing. Remove O-ring seals (17) from each end of the core assembly. 13. Remove two bolts (18) on the inside of the aftercooler housing. 14. Disconnect wire (20) from the aftercooler housing switch. Make a note of the location of bolt spacers before removal.15. Remove bolts (19), housing (21) and gasket from the cylinder head.Install Aftercooler
Inspect all O-ring seals and gaskets and make replacements if necessary. Put a thin layer of clean engine oil on all O-ring seals and in the bores of each adapter. 1. Put aftercooler housing gasket in position on the cylinder head and install aftercooler housing (1). Make a note of the location of two spacers (2) from the remove story. 2. Connect wire (3) to the aftercooler housing switch. 3. Install aftercooler core gasket (6) in position on housing.4. Install O-ring seals (5) on each end of the aftercooler core (4).5. Put aftercooler core (4) in position in housing. 6. Install gasket (7) and cover (8) in position on aftercooler core. Be sure all hose and wire clips are in place. 7. Connect tube assembly (9) to cover assembly. Install gasket and adapter (10). 8. Install O-ring seal (11) on tube assembly. 9. Install tube assembly (12) in position. Be sure hose and tube clamps are in place. Install hose on opposite end of tube assembly to the oil cooler bonnet. 10. Install gasket and adapter (13) in cover assembly. 11. Install O-ring seal (14) on tube assembly. 12. Put tube assembly (16) in position and install bar (15). Slide hose in position on the water pump bypass elbow and tighten two clamps (18).13. Install breather cap (17) and tighten bolt to a torque of 14 3 N m (10 2 lb.ft.). Tighten clamp (19). 14. Intall pipe (20) between turbocharger and aftercooler cover assembly.15. Fill the radiator with coolant to the correct level. See MAINTENANCE GUIDE.