PUMP GP-METERING 1U2104 - Caterpillar

Remove Aftercooler
1. Drain the coolant from the cooling system. 2. Remove fuel lines (1) from the engine.3. Disconnect junction box (2) from the brackets that hold it to the engine and fasten it to the engine as shown in illustration B36292X1.4. Remove oil tube (3) from the engine. 5. Remove water tube (4) and remove bolts (5) that hold water line (6) to adapter (7). 6. Remove bolts (8) and remove water line (6) from the engine. 7. Remove elbow (9) from the aftercooler housings. 8. Remove bolts (10) and remove adapter (7) from the aftercooler housings. 9. Remove sleeve (11) and adapter (12) from both ends of the aftercooler housings. 10. Remove bolts (13) to disconnect air lines (16) from air intake shutoff housing (15) and exhaust manifolds (17). Disconnect wiring harness (14). 11. Use tooling (A) to fasten a hoist to aftercooler housings (18). Remove the bolts that hold the aftercooler housings to the engine and remove aftercooler housings (18). The weight of the 3512 Aftercooler Housings is 82 kg (180 lb.). The weight of the 3508 Aftercooler Housings is 36 kg (80 lb.).
Be careful when the aftercooler core assembly is removed the lower part of the core is held in position by a connector and O-ring seals.
12. Fasten a hoist to aftercooler core assembly (19). Remove bolts (20) and remove the core assembly. The weight of the 3512 Core Assembly is 52 kg (115 lb.) and the weight of the 3508 Core Assembly is 29 kg (65 lb.).13. Remove pipes (21) from both ends of the aftercooler core. Remove the O-ring seals from the pipes.14. Remove O-ring seals (22) from each end of the core assembly. 15. Remove ring (23) to remove connector (24) from the core assembly. Remove the O-ring seals from connector (24).Install Aftercooler
Clean and inspect all of the O-ring seals and gaskets. Make a replacement of any worn or damaged seals and gaskets. 1. Install the O-ring seals on connector (2) and put clean engine oil on the seals. Put connector (2) in position and install ring (3) to hold the connector in the core assembly.2. Install O-ring seals (1) on the ends of the core assembly and put clean engine oil on the seals. 3. Install the O-ring seals on pipes (4) and put clean engine oil on the seals. Install pipes (4) on the ends of the aftercooler core assembly.4. Fasten a hoist to the aftercooler core assembly as shown and put it in position on the engine. Make sure connector (2) is correctly engaged with adapter (5) in the cylinder block. Install the bolts to hold the core assembly in position. If the aftercooler housings were taken apart and new gaskets installed, cut the gaskets even with the bottom of the housings. 5. Fasten a hoist to aftercooler housings (6) with tooling (A). Put housings (6) and the gasket in position and install the bolts to hold the housings in position. Tighten the bolts to a torque of 55