ENGINE AR-PRIMARY 4173389 - Caterpillar

2. Remove four bolts (1) that hold engine oil cooler to the cylinder block. 3. Remove two bolts (2) that hold water inlet pipe (3) to water pump. Remove two bolts (4) to disconnect water inlet hose. 4. Remove engine oil cooler from the engine. Remove water outlet pipe (5) and water inlet pipe (8) from the engine oil cooler. Remove coupling (7) from water inlet pipe. Remove O-ring seal (6) from water outlet pipe and O-ring seals (9) from coupling. Inspect seals and make replacements if necessary.Install Engine Oil Cooler
1. Put clean engine oil on O-ring seal. Install seal on water outlet pipe and install the pipe into the engine oil cooler.2. Put clean engine oil on O-ring seals for the coupling. Put O-ring seals on coupling and install coupling into water inlet pipe. Install pipe into engine oil cooler. 3. Put engine oil cooler in position on engine. Install the four bolts that hold it to the cylinder block. Install two bolts that hold it to the water pump. Connect water inlet hose to the water inlet pipe and install the two bolts.end by:a) install oil filter base