BOLT 4471728 - Caterpillar

Disassembly Procedure
Start By:
Remove the engine oil cooler. Refer to Disassembly and Assembly, "Engine Oil Cooler - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01135749
Remove bolts (7). Remove elbow (6). Remove gasket (8) from the elbow.
Remove tube (4) from elbow (6). Remove O-ring seals (5) from tube (4).
Remove the bolts and cover (9) from elbow (6). Remove the gasket from the elbow.
Place an identification mark on oil cooler bonnet (3) and on engine oil cooler core (1) for assembly purposes. Remove bolts (10) and remove oil cooler bonnet (3) from engine oil cooler core (1). Remove gasket (2) from the engine oil cooler core.
Illustration 2 g01135795
Place an identification mark on oil cooler bonnet (14) and on engine oil cooler core (1) for assembly purposes. Remove bolts (13) and remove oil cooler bonnet (14) from engine oil cooler core (1). Remove gasket (16) from the engine oil cooler core.
Remove bolts (11) and elbow (12) from the engine oil cooler bypass. Remove the O-ring seals from the elbow.
Remove cover (17) and the O-ring seal.
If necessary, remove drain plug (15) and the O-ring seal.
Thoroughly clean the tubes in the engine oil cooler core.
Illustration 3 g01135796
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Remove bolts (22), cover (21), O-ring seal (18), spring (19), and bypass valve (20) from elbow (12).