3126B Marine Engine Caterpillar


Auxiliary Water Pump - Disassemble

Usage:

3126B 3GS

Disassembly Procedure

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-1855     Retaining Ring Pliers     1    
B     1P-1861     Retaining Ring Pliers     1    
C     1P-0510     Driver Group     1    
D     9S-9152     Bearing Puller     1    

Start By:

  1. Remove the auxiliary water pump. Refer to Disassembly and Assembly, "Auxiliary Water Pump - Remove".


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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.





    Illustration 1g00653054

  1. Remove nut (1) and the washer that fastens gear (2) on the water pump.

  1. Remove gear (2) from the water pump.



    Illustration 2g00653069

  1. Remove four bolts (3) and the washers. Remove mounting plate (4) .



    Illustration 3g00653096

  1. Inspect lip seal (5) in mounting plate (4) for wear or damage. If the seal is worn or damaged, use a new part for replacement.



    Illustration 4g00653078

  1. Remove three bolts (6) and the washers. Remove cover plate (7) .



    Illustration 5g00653106

  1. Use a 3/4-16 Bolt to drive pump impeller (8) off the water pump shaft.

  1. Remove the key from the water pump shaft.



    Illustration 6g00653188

  1. Remove O-ring seal (9). Inspect the O-ring seal for wear or damage. If the O-ring seal is worn or damaged, use a new part for replacement.

  1. Remove bolt (10), the O-ring seal, and cam (11). Inspect the O-ring seal for wear or damage. If the O-ring seal is worn or damaged, use a new part for replacement.



    Illustration 7g00653156

  1. Remove plate (12) from the water pump housing. Inspect locator pin (13). If the locator pin is damaged, replace plate (12) with a new part.



    Illustration 8g00653542

  1. Use Tool (A) to remove retaining ring (14) that holds the seal assembly in the water pump housing.



    Illustration 9g00653549

  1. Use Tool (B) to remove retaining ring (15) that holds the bearing assembly in the water pump housing.



    Illustration 10g00653563

  1. Use a suitable press to drive shaft (16) out of the water pump housing from the impeller end of the water pump housing.



    Illustration 11g00653150

  1. Use Tool (C) to remove the seal assembly out of the water pump housing.



    Illustration 12g00653570

  1. Use Tool (A) to remove two retaining rings (17) and two washers (18) that fasten the bearings and the spacer on the water pump shaft.



    Illustration 13g00653154

  1. Use a suitable press and Tool (D) to drive two bearings (19) and spacer (20) off the water pump shaft.

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