C7 Industrial Engines Disassembly and Assembly – Unit Injector Hydraulic Pump – Remove

Removal Procedure for Non-Dual Tapered Roller Bearing HEUI Pump

Table 1

Required Tools
Tool	Part Number	Part Description	Qty
A	192-5092	Removal Tool	1

Start By:

1. Remove the air compressor.
2. Remove the fuel filter base, if necessary.

 

 

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.

 

Illustration 1 g03601539
Non-Dual Taper Roller Bearing HEUI pump

Illustration 2 g03601540
Dual Taper Roller Bearing HEUI pump

Note: Refer to Illustrations 1 and 2 in order to identify each unit injection hydraulic pump.

1. Use Tooling (A) in order to disconnect hose assembly (3) .

 

2. Disconnect tube assembly (4) .

 

3. Disconnect hose assemblies (5) , and (6) .

 

4. Disconnect harness assembly (2) from unit injector hydraulic pump (1) .

5. Support unit injector hydraulic pump (1) by hand and remove bolts (7) and the washers. Remove unit injector hydraulic pump (1) .

6. Remove O-ring seal (8) .

Removal Procedure for Dual Tapered Roller Bearing HEUI Pump

Table 2

Required Tools
Tool	Part Number	Part Description	Qty
A	192-5092	Removal Tool	1

Start By:

1. Remove the air compressor.
2. Remove fuel filter base, if necessary.

 

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.

 

Illustration 6 g03601539
Non-Dual Taper Roller Bearing HEUI pump

Illustration 7 g03601540
Dual Taper Roller Bearing HEUI pump

Note: Refer to Illustrations 6 and 7 in order to identify each unit injection hydraulic pump.

Illustration 8 g03607901
Disconnect harness assembly (1) . Use Tooling (A) in order to disconnect hose assembly (3) . Remove tube assembly (2) .

Illustration 9 g03607991
Support unit injector hydraulic pump (5) and remove bolts (4) .

Rotate unit injector hydraulic pump (5) counterclockwise as shown, then remove unit injector hydraulic pump (5) .

Remove O-ring seal (6) .