SEAL 0006452 - Caterpillar

Removal Procedure for Non-Dual Tapered Roller Bearing HEUI Pump
Start By:
Remove fuel filter base, if necessary.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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 pumpNote: Refer to Illustrations 1 and 2 in order to identify each unit injection hydraulic pump.
Illustration 3 g03614617
Disconnect tube assemblies (3) , (4) , (5) , and (6) .
Disconnect hose assembly (7) .
Disconnect harness assembly (2) from unit injector hydraulic pump (1) .
Illustration 4 g03614660
Support unit injector hydraulic pump (1) by hand and remove bolts (8) . Remove unit injector hydraulic pump (1) .
Illustration 5 g03614696
Remove O-ring seal (9) .Removal Procedure for Dual Tapered Roller Bearing HEUI Pump
Start By:
Remove fuel filter base, if necessary.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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 g03615086
Disconnect harness assembly (1) . Disconnect hose assemblies (4) and tube assembly (3) . Remove tube assembly (2) and tube assembly (5) .
Illustration 7 g03615089
Support unit injector hydraulic pump (7) and remove bolts (6) .
Illustration 8 g03615416
Rotate counterclockwise as shown, then remove unit injector hydraulic pump (7) .
Illustration 9 g03615091
Remove O-ring seal (8) .