307B Excavator Machine Systems Caterpillar

Assembly Procedure

1. Be sure that all of the internal parts of the rotary joint are thoroughly clean and free of dirt and debris.
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   Illustration 1	g00551208

2. Check the condition of seals (9) and O-ring seals (3) and (7). If the seals are damaged, use new parts for replacement.

3. Install nine seals (9) in housing (5). Install O-ring seal (7) in housing (5). Put 5P-0960 Molybdenum Grease on the seals.
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   Illustration 2	g00551416

4. Install a new dust seal (6) in housing (5). Install the seal so that the lip is facing outward, as shown. Properly seat the seal in the housing.
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   NOTICE
   Do not damage the dust seal when installing the rotor into the housing.

5. Put 5P-0960 Molybdenum Grease on both ends of rotor (10). Be sure that there is grease on the rotor area that contacts dust seal (6) and O-ring (7). Install rotor (10) in housing (5).

6. Install spacer (4) on rotor (10) and in housing (5). Install snap ring (8) on rotor (10).

7. Put 5P-0960 Molybdenum Grease on O-ring seal (3). Install the O-ring seal in the top of housing (5).

8. Install cover (2) and four bolts (1) that hold the cover in place.

End By:

1. Install the swivel. Refer to Disassembly and Assembly, "Swivel - Install" in this manual.