G3508B, G3512B, G3512B, G3516B and G3520B Petroleum Engines Caterpillar


Water Pump - Remove

Usage:

G3520B GLF


Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
138-7573  Link Bracket 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.



NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.


  1. Drain the coolant from the cooling system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".


    Illustration 1g01340688

  2. Remove bolts (2) and the retainer from elbow (4).

  3. Remove bolts (5) from water pump (3).

  4. Remove elbow (4) from tube assembly (1).


    Illustration 2g01340689

  5. Disconnect hose assembly (6). Remove clip (7).

  6. Use Tooling (A) and attach a suitable lifting device to water pump (3). The weight of water pump (3) is approximately 22 kg (50 lb). Remove bolts (9), bolts (8), and water pump (3).

Handling the Water Pump


NOTICE

Radial movement of the pump drive shaft can allow the shaft to contact the ceramic seals in the water pump. This can damage the ceramic seals. Damage to the seals will cause leaks and failure of the pump. Do not cause radial movement of the pump drive shaft.




Illustration 3g01340816
Section view of the water pump
(10) Ceramic seals
(11) Pump drive shaft

Use the following guidelines for handling the water pump:

  • Do not cause radial movement of the pump drive shaft. Never use any Tooling that will cause radial movement of the shaft.

  • Never place the water pump on a surface so the shaft rests on the surface.

  • Never handle the water pump by the shaft.

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