Usage:
3116 Engine Shown
NOTE: The procedure for removing the raw water pump on the 3116 and 3126 Marine Engines are very similar. Only one procedure will be shown.
1. Drain the coolant from the engine into a suitable container for storage or disposal.
2. Loosen hose clamps (1). Remove hose (2).
3. Remove two bolts (4). Remove raw water pump (3) from the housing.
NOTE: The following steps are for the installation of the raw water pump.
4. Position gasket and raw water pump (3) on the housing. Install bolts (4).
5. Install hose (2). Tighten hose clamps (1).
6. Fill the cooling system with coolant to the correct level. See the Operation & Maintenance Manual.
Disassemble & Assemble Raw Water Pump
Start by:
a. remove raw water pump
1. Remove the nut that holds the gear onto the shaft
2. Remove gear (1) from the shaft with Tool (A).
3. Remove two bolts (4), then remove plate (3) from pump housing (2).
4. Remove seal (5) from plate (3).
5. Remove snap ring (6) from pump housing (2).
6. Remove three bolts (7), then remove plate (8).
7. Remove O-ring seal (11) from housing, impeller (9) and key (10) from the shaft.
8. Remove screw (14) from side of pump housing, then remove plate (13) and brass washer (12) from inside pump.
9. Remove the snap ring and the washer from the shaft.
10. Place pump in press as shown.
11. Press shaft (17) with attached bearings out of pump housing (2), then remove seal (16) from inside rear of pump housing (2).
12. Place pump in press as shown. Use Tool (B) to press inner seal (15) out of pump housing (2).
13. Remove snap ring (21) and washer (20) from shaft (17).
14. Place shaft (17) with bearings in a press. Press and remove bearings (18) and spacer (19) from shaft (17) using Tooling (C).
NOTE: The following steps are for the assembly of the raw water pump.
15. Press bearings (18) and spacer (19) on shaft (17), then install washer (20) and snap ring (21) on shaft (17).
16. Position inner seal (15) in pump housing (2), then position pump housing (2) in press. Press inner seal (15) into place using Tool (D).
17. Install shaft (17) with bearings (18) and spacer (19) back into pump housing (2).
18. Position shaft seal (16) and press onto shaft (17) using Tools (D) and (E).
19. Install washer and snap ring onto shaft (17).
20. Position brass washer (12) into pump housing (2). Locating point (23) should be facing down and lining up with marking slot (22) in pump housing (2).
21. Install plate (13) and screw (14).
22. Install key (10) and impeller (9) onto the shaft and O-ring seal (11) onto the housing.
23. Position plate (8), and install three bolts (7).
24. Install snap ring (6) into pump housing (2).
25. Install seal (5) in plate (3).
26. Position plate (3) on pump housing (2), and install two bolts (4).
27. Install gear (1) onto the shaft, and install the nut.
End by:
a. install raw water pump