TUBE AS 2181154 - Caterpillar

2. Remove the bolts that hold tube (1) to the oil filter base and bypass valve body, and remove the tube. Cap or plug all openings immediately.3. Remove clip (3) and bolts (2), and remove bonnet (4) and the adapter as an assembly. 4. Remove adapter (5) from bonnet (4), and remove the O-ring seals from the adapter. 5. Remove clip (8).6. Remove the bolts that hold elbow (6) and bypass valve body (7) to the cylinder block, and remove them as an assembly with engine oil cooler (9).7. Remove the bolts that hold elbow (6) and bypass valve body (7) to the oil cooler, and remove the elbow and the bypass valve body.8. Use a 3.17 mm (.125 in) diameter rod to clean each tube of the engine oil cooler.
Spring force is present behind cover (10). Remove the bolts slowly and evenly that hold cover (10) in position to avoid possible personal injury.
9. Remove cover (10).10. Remove spring (11) and the plunger from bypass valve body (7). 11. Remove elbow (6) from tube (12), and remove the tube from bypass valve body (7).12. Remove the O-ring seal from tube (12).Install Engine Oil Cooler
1. Replace all O-ring seals that are worn or damaged, and put clean engine oil on them. 2. Install the O-ring seal on tube (3), and install the tube in elbow (1) and bypass valve body (2). 3. Install plunger (5) and spring (4) in bypass valve body (2), and install the gasket and cover. 4. Put the O-ring seals in position in elbow (1) and bypass valve body (2), and install them on engine oil cooler (6). 5. Install O-ring seal (7) on the flange.6. Put engine oil cooler (6) in position on the flange. Make sure the O-ring seal is in place in elbow (1), and install the bolts that hold the elbow and bypass valve body (2) to the cylinder block.7. Install the clip that holds the engine oil cooler to the flange. 8. Install the O-ring seals on adapter (9), and install the adapter in bonnet (8). 9. Put a new gasket in place on the water pump and elbow (10).10. Install bonnet (8) on the engine oil cooler, and install the bolts that hold the bonnet to the water pump and elbow (10).11. Install the clip that holds the bonnet to the engine oil cooler. 12. Put the O-ring seal in place on tube (11), and install the tube in the bypass valve body.13. Put the gasket on the oil filter base, and connect tube (11).14. Fill the cooling system to the correct level. See the Operation & Maintenance Manual.15. Check oil level in the engine. See the Operation & Maintenance Manual.