BEARING SET-ROD 2257781 - Caterpillar

Remove Aftercooler Core
1. Drain the radiator to a level below the aftercooler.2. Loosen bolt (6) and remove bolt (2). Move bar (1) away from the aftercooler housing.3. Remove four bolts and elbow (3) from the side of the aftercooler housing.4. Remove the bolts that hold dampers (4), (7) and (9) to the bracket. The 3408 Generator Sets do not have dampers (4) and (9).5. Remove two elbows (8) from the end of the aftercooler housing. Remove the bolts and cover (5). 6. Remove adapters (10) and (11) from the end of the aftercooler housing. 7. Fasten a hoist to the aftercooler core as shown. Remove aftercooler core (12) from the engine. The weight of the aftercooler core is approximately 25 kg (55 lb.).Install Aftercooler Core
1. Put clean engine oil or glycerine on four seals (2). Fasten a hoist to the aftercooler core as shown. Install aftercooler core (1) in the engine. The weight of the aftercooler core is approximately 25 kg (55 lb.). 2. Make sure O-ring seals (5) are in position on both adapters (4). Put clean engine oil or glycerine on both O-ring seals.3. Install adapters (4) and (3) in the end of the aftercooler. Install the two O-ring seals that go on the outside face of adapters (3). Put clean engine oil or glycerine on the seals. 4. Install cover (9) and the bolts that hold it in place.5. Make sure the O-ring seal is in position on the end of tube (13). Put clean engine oil or glycerine on the O-ring seal. Install two elbows (12) on the end of the aftercooler housing.6. Install dampers (10), (11) and (14) on the fuel lines. Tighten the bolts that hold the dampers in place to a torque of 9.5 2.8 N m (84 25 lb.in.). The 3408 Generator Set does not have dampers (10) and (14).7. Make sure the two O-ring seals are in position on the end of elbow (7). Put clean engine oil or glycerine on the O-ring seals. Install elbow (8) and the gasket.8. Install bar (6).9. Fill the radiator with coolant to the correct level.