HORN ASSEM. 7N1138 - Caterpillar

Sea Water Pump (3412) Remove Sea Water Pump
1. Remove the inlet and outlet water lines to the pump.2. Remove oil supply line (1) from the sea water pump.3. Remove nuts (3) and sea water pump (2). The weight of the sea water pump is approximately 27 kg (60 lb.).Install Sea Water Pump
1. Install sea water pump (1) and gasket (2) on the engine. The weight of the pump is approximately 27 kg (60 lb.). 2. Install oil supply line (3).3. Install the inlet and outlet water lines to the pump.Disassemble Sea Water Pump
START BY:a) remove sea water pump 1. Remove the bolt and washer from the sea water pump shaft. Remove gear (3) with tooling (A).2. Remove housing (1).3. Remove clamp (4). Remove end cover (2). 4. Remove O-ring seal (8) and ring (6). Remove plate (9) from end cover (2).5. Remove cotter pin, nut and washer (7). Remove impeller (5) with tool (B). 6. Remove plate (14) from body (10).7. Remove the key from shaft (13). Remove shim (12) and washer (11). 8. Remove nuts (15) that hold body (10) to housing (16). 9. Use a press to remove housing (16) and shaft (13) from body (10). Remove seal (17).
Do not let housing (16) fall when it is removed from body (10).
10. Remove the ceramic ring from body (10) with tooling (C) and a press. If seal (17) or the ceramic ring have damage, use new parts for replacement. 11. Remove the rubber washer (thrower) from shaft (13). Remove seal (18) with tool group (D). 12. Remove snap ring (19) with tool (E). Steps 14 through 17 are for sea water pumps on 3408 Generator Sets.13. Bend the lock from nut (21). Remove nut (21) and the lock with tool (F). Remove snap ring (20) with tool (E). 14. Remove shaft (13) from housing (16) with a press. Do not let the shaft fall as it is removed.15. Remove the bearing and the collar from shaft (13) with a press.16. Remove the bearing from housing (16) with tool (C) and a press. Steps 18 through 21 are for sea water pumps from a 3412 Generator Set.17. Bend back the lock from nut (23). Remove nut (23) with tool (F). Remove the lock. Remove spacer (22). 18. Remove shaft (13) from housing (16) with a press. Do not let the shaft drop as it is removed.19. Remove the bearing from shaft (13) with a press.20. Remove bearing retainer (24). Remove the bearing from housing (15) with tooling (C) and a press. 21. Use tool (G) to remove bearing race (25) from the housing.Assemble Sea Water Pump
1. Install the bearing race in housing (1) with tooling (A). Install the bearing until it is against the shoulder in housing (1). Use tooling (B) to install the bearing in the housing for the 3412 Generator Set. 2. On the 3408 Generator Sets, use tooling (A) to install bearing (2) in housing (1). On the 3412 Generator Sets, use tooling (B) to