SITE INFORMATION AND CORRESPONDENCE

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L./ Moe GEAR END ASSEMBLY .I2s 1 5. Stand rotors (1) on arbor press with gear A end shafts up and both keyways facing to the right. The drive rotor should be on a the left. 6. Install the gear end plate (4), making sure C I the feet are facing in the right direction, over the rotor shafts and coming to rest so° on top of the rotor lobes. Be careful not D to damage seals. 4.00 7. On 57/81/64167 series, Lubricate and in- stall shaft O rings (314)`. Check lapped MATERIAL:MILD STEEL surface of seal mating ring to be sure it SEAL A e c D is perfectly clean. Use soft tissue and TOOL No. DIA. 01A. 01A. cleaning agent (acetone) if necessary. 27565 1.871 1.751 2.045 312 Place a few drops of lubricating oil on 1.870 1.771 z.044 its surface and install on shaft with lap- ped surface coming to rest on top of car- bon. Gently press with fingers to insure FIGURE 7 compression is taking place and ring is not hung up for any reason. 8. Lubricate shafts and press the double row ball bearings (9) on rotor shafts and 2. Press the labryinth seals (51) into seal into end plate bores. Secure with re- bores of both end plates (4) making sure tainer rings (14) and screws (30). the scalloped areas of seal case are g. Check clearance between the face of the aligned with openings in vent area of end plate and rotor lobes. See explod- seal bore. (All series except 16/47.) ed view for correct gear end clearances. 3. Lip seal installation 16147117146 series: If clearances are not within specifica- Apply a thin coat of #2 Permatex or tions, recheck parts to find cause of im- equivalent to O.D. of seal and press into proper clearances before proceeding. seal bore. Make sure seals are fully 10. Install spacer(17) (.260 thickness) on one seated without deforming. Seal lip shaft and spacer(18)(.200 thickness) and should face towards the bearing. oil slinger (20) on the other shaft. Lubricate lip seal only, with grease. Note: Oil slinger and its spacer should 4. Mechanical seal installation 57/81164/67 always be mounted on lower rotor series: Follow instructions for lip seal for horizontal flow units. It can be but do not grease. mounted on either shaft for ver- Note: For units handling gases other tical flow units. than air, it may be necessary to Install timing shim in same location as use an RTV or Locktite sealer in- found in disassembly. This does not stead of Permatex. Care should be taken that no sealer is left on necessarily insure the unit will be in pro- per time. Adjustments can be made later the carbon. Clean with soft tissue and cleaning agent if necessary. in the assembly process. Failure to remove will result in 11• gear shaft into the rotor leakage. Insert fits are not acceptable 13