OPERATOR AR 3531994 - Caterpillar

Illustration 3 g00618790
Apply a light coat of clean engine oil to shaft assembly (18) and shaft assembly (19). Install the shaft assemblies into the rear housing. Note: In the steps that follow, ensure that the components are kept in alignment. This should be done by using the mark that was made before disassembly.
Illustration 4 g00618789
Install new O-ring seals on gear cases (16). Apply clean engine oil to the O-ring seals in order to hold the O-ring seals in position.
Install gear cases (16) on the rear housing.
Install dowels (17).
Illustration 5 g01290494
Install check valves (14) in middle housing (12).
Install a new O-ring seal (13) in middle housing (12). Apply clean engine oil to the O-ring seal in order to hold the O-ring seal in place.
Illustration 6 g00622500
Place middle housing (12) on the dowels and install middle housing (12) until middle housing (12) sits against the gear case.
Use Tooling (B) in order to install retaining ring (11).
Install dowels (10).
Illustration 7 g01290508
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Note: Do not touch the sealing surfaces of the carbon face seal. This may cause contamination by abrasive particles.
Install spring holder (31) and spring (30) on the shaft assembly. Note: Install carbon seal (29) immediately after applying oil to the rubber bellows. Oil causes the rubber bellows to expand.
Apply a light coat of clean engine oil to the rubber bellows of carbon seal (29).
Hold the outside of carbon seal (29) and place carbon seal (29) on the shaft assembly against spring (30). Seal seat (6) will be installed later in the front housing.
Illustration 8 g01290514
Illustration 9 g01290894
Illustration 10 g00622447
Use Tooling (C) in order to install lip seal (8) in front housing (4). Install the lip seal with the spring-loaded lip toward the bearing. Install O-ring seal (7) in the front housing. Note: There are two lip seals that are available for lip seal (8). One lip seal is for distillate fuel and the other lip seal is for residual fuel. Check for the engine application before installation.Note: Install seal seat (6) soon after applying oil to the O-ring seal. Oil causes the O-ring seal to expand.
Apply a light coat of clean engine oil to the O-ring seal that is on seal seat (6). Place the seal seat in the bore of front housing (4). Ensure that the finished surface is facing upward. Do not press directly against the finished surface.
Place the cardboard disc that is contained in the seal's package over the seal seat in order to protect the seal seat while the seal seat is being installed.
Use Tooling (C) in order to press the seal seat to the bottom of the bore.
Illustration 11 g01290831
Apply clean engine oil to the face of the carbon seal.
Place front housing (4) over the dowels in middle housing (12). Hold the front housing against the middle housing.
Illustration 12 g00618775
Install bolts (3) in order to hold the fuel transfer pump together.
Tighten the bolts to a torque of 67 13 N m (50