GEAR (20 Teeth) 8K6321 - Caterpillar

Remove & Install Oil Cooler
1. Drain the coolant from the cooling system.2. Drain the oil from the oil cooler. 3. Remove the bolts and retainers (3) from both ends of tube (2).4. Remove the bolt and clamp (1).5. Remove the four bolts and disconnect flange (4) and tube (5) from the water line adapter. 6. Remove the bolts, elbow (6) and tube (7) as a unit from the oil cooler bonnet. 7. Disconnect detonation sensor harness (12).8. Fasten a hoist to the oil cooler. Remove two bolts (8) and two bolts (11).9. Put oil cooler (10) from oil tube (9) and remove tube (2). Remove the oil cooler from the engine. The weight of the oil cooler for 3512 Engines is 65 kg (145 lb). The weight of the oil cooler for 3616 Engines is 78 kg (171 lb). The following steps are for the installation of the oil cooler.10. Make sure the O-ring seals are in position on tubes (2) and (9) and put clean engine oil on the seals. Fasten a hoist to oil cooler (10). Install tube (2) on the oil cooler. Install the oil cooler on oil tube (9). Make sure tube (2) is positioned correctly in the oil filter housing adapter.11. Install two bolts (8).12. Install two bolts (11). Remove the hoist from the oil cooler.13. Put clean engine oil on the O-ring seal on the end of tube (7). Install elbow (6) and tube (7) in the bonnet. Make sure the gasket is in place and install the bolts.14. Make sure the gasket is in place and install the bolts to hold flange (4) and tube (5).15. Install clamp (1) and the bolt that holds tube (2) to the engine.16. Install retainers (3) and the bolts on both ends of tube (2).17. Check the oil level in the engine. Fill the cooling system with coolant to the correct level. See the Maintenance Manual.Disassemble Oil Cooler
Start By:a. remove oil cooler 1. Remove the bolts and elbow (1) with tube (2), as a unit, from the oil cooler.2. Remove tube (2) from elbow (1). Remove the O-ring seals from tube (2) and elbow (1). 3. Mark bonnet (3) and