3516 MARINE ENGINE Caterpillar


Water Pump

Usage:

Remove And Install Water Pump

1. Drain the coolant from the cooling system.

2. Remove the bolts, and remove damper guard (1) from the engine.

3. Remove four bolts (2), and pipe (3).

4. Remove eight bolts (4) and ring (6). Remove three bolts (5) and elbow (8). Remove three nuts (9) and adapter (7).

5. Fasten a hoist to water pump (12). Remove four bolts (10), four bolts, nuts and washers (11) and water pump (12). The weight of water pump (12) is 27 kg (60 lb).

NOTE: Installation of the water pump is accomplished in the exact reverse order from removal.

6. Install a new O-ring seal on the rear side of the water pump and lubricate with clean engine oil. Make sure that the gasket is in position on the water line adapter.

7. Make sure when installing the water pump that the splines in the pump shaft are correctly engaged with the pump drive splines.

8. If necessary, make replacements to the O-ring seals on each end of the pipe (2) and put clean engine oil on the seals.

Disassemble Water Pump

Start By:

a. remove water pump

1. Remove elbow (1) from housing assembly (2). Remove the O-ring seal from elbow (1).

2. Remove O-ring seal (5) from the back of housing assembly (2).

3. Remove washer (4) that holds shaft assembly (3) in housing assembly (2).

4. Remove cover (6) from housing assembly (2). Remove the O-ring seal from cover (6).

5. Loosen nut (8) and the washer that hold impeller (7) to the pump shaft. Use tooling (A) to loosen impeller (7) from the end of the pump shaft. Remove tooling (A), nut (8), the washer and impeller (7) from the pump shaft and housing assembly (2).

6. Remove spring (10) from seal assembly (9) and shaft assembly (3).

7. Use a soft faced hammer and push shaft assembly (3) out of seal assembly (9) and housing assembly (2). Remove seal assembly (9) from housing assembly (2).

8. Remove ceramic seal (11) from the rubber ring. Remove the rubber ring from housing assembly (2).

9. Remove seal (12) from the back of housing assembly (2).

Assemble Water Pump

1. If necessary, make a replacement of the two filters in the pump housing at location (13).

2. If necessary, make a replacement of plug (14) and the seal.

3. Use tool group (A) to install the seal in the housing assembly. Make sure the lip of the seal is toward the outside as shown. Put clean engine oil on the lip of the seal.

4. Install shaft assembly (3) in housing assembly (2). Install washer (4) and the bolts to hold shaft assembly (3) in position. Install O-ring seal (5) on the back of housing assembly (2).


NOTICE

Clean water only is permitted for use as a lubricant for assembly. Do not damage or put hands on the wear surface of the carbon ring or the ceramic ring. Install the ceramic ring with the smoothest face of the ring toward the carbon seal assembly.


5. Put ceramic seal (11) in position in the rubber ring. Use hand pressure and the tool (which is with the replacement seal) to install the ceramic seal.

6. Remove the spring from seal assembly (9). Use hand pressure and the tool (which is with the replacement seal) to install the seal assembly. Push the seal assembly on the shaft until the seal faces make light contact.

7. Install spring (10) on the carbon seal assembly.

8. Put impeller (7) in position on the pump shaft as shown.

9. Install washer and nut (8). Tighten nut (8) to a torque of 200 ± 25 N·m (150 ± 18 lb ft). Hit the nut with a hammer, and tighten it again to a torque of 200 ± 25 N·m (150 ± 18 lb ft).

10. Make sure the studs for cover (6) are tightened in the pump housing. Tighten the studs to a torque of 27 ± 4 N·m (20 ± 3 lb ft).

11. Put clean engine oil on O-ring seal (15), and install it on cover (6). Put cover (6) in position, and install the nuts to hold it to the pump housing.

12. Put clean engine oil on the O-ring seal, and install it in elbow (1). Put elbow (1) in position on housing assembly (2), and install the bolts to hold the unit together.

13. Put clean engine oil on the O-ring seal, and install it on the back of housing assembly (2).

End By:

a. install water pump

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