RING-SEAL 6P7985 - Caterpillar

Disassembly Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-2320     Combination Puller     1    
B     1U-5429     Snap Ring Pliers     1    Start By:
Remove the fuel transfer pump. Refer to Disassembly and Assembly, "Fuel Transfer Pump - Remove".Note: Use 8T-0447 Dial Calipers to measure the dimensions in the following procedure.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00618774
Loosen bolt (2) and use Tooling (A) in order to separate gear (1) from the pump shaft.
Remove bolt (2), the washer, and gear (1) from the pump shaft.
Remove the O-ring seal from the fuel transfer pump.
Illustration 2 g00618775
Put an alignment mark across the sections of the fuel transfer pump. This is done in order to maintain alignment when the pump is assembled.
Remove bolts (3) that hold the fuel transfer pump together, but do not separate the components at this time.
Position the fuel transfer pump on the end of relief valve. This is the flat end.
Illustration 3 g00618778
Carefully lift front housing (4) off the dowels. Ensure that front housing (4) is oriented straight when front housing (4) is being lifted.
Illustration 4 g00618780
Inspect bearing (5) in front housing (4). The inside diameter of a new bearing (5) must be 15.951 mm (0.6280 inch).
If bearing (5) is worn or damaged, replacement of front housing (4) is necessary.
Turn over the front housing.
Illustration 5 g00618781
Remove O-ring seal (7) from front housing (4) .Note: Seal seat (6) has an O-ring seal which gives resistance to movement.
Remove seal seat (6). Seal seat (6) has an O-ring seal around the outside. Be careful not to damage front housing (4) while seal seat (6) is being removed.
Illustration 6 g00618783
Remove lip seal (8) from front housing (4). Be careful not to damage front housing (4) while the lip seal is being removed.
Illustration 7 g00618785
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Remove carbon face seal (9). The seal components are shown in the inset. Seal seat (6) was previously removed from the front housing.
Illustration 8 g00622500
Use Tooling (B) in order to remove retaining ring (11) .
Remove dowels (10) .
Carefully lift middle housing (12) off the dowels. Ensure that middle housing (12) is oriented straight when middle housing (12) is being lifted.
Illustration 9 g00618788
Remove O-ring seal (13) .
Remove check valves (14) from middle housing (12) .
Inspect bearings (15) in middle housing (12). The inside diameter of new bearings (15) must be 15.951 mm (0.6280 inch).
If bearings (15) are worn or damaged, replacement of middle housing (12) is necessary.
Illustration 10 g00618789
Remove dowels (17) .
Remove gear cases (16) .
Inspect the gear cases for wear. Also ensure that the gear cases are not damaged.
Illustration 11 g00618790
Remove shaft assembly (18) and shaft assembly (19) .
Inspect the shaft assemblies for wear. Ensure that the shaft assemblies are not damaged. The shaft diameter of a new shaft should be 15.869 0.006 mm (0.6248