Gardner Denver Industrial Series, Parts List Operating And Service Manual

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HF-7-602 Page 39
43. Install key (36) into keyway on idler rotor shaft.
44. Thread pull rod into end of the idler rotor shaft.
45. Heat pinion gear to 350° F.
46. Place heated gear onto idler rotor shaft (over pull rod) and align keyway with key in shaft. Place driver tool
EQ144211-1 over pull rod. Reference FIGURE 7-11. Place portable hydraulic
c
ylinder over pull rod and onto
driver tool. Install 3/4" flat washer and nut onto pull rod and tighten against hydraulic cylinder. Press gear onto
rotor shaft until tight against bearing inner race. Piston ring carrier, bearing inner race, and pinion gear must
be clamped tight against rotor. To ensure gear remains tight against bearing race, do not remove tooling until
gear has cooled to at least 120°F.
Figure 7-11 – PINION GEAR INSTALLATION
Note:
Maximum load applied to threaded rod must NEVER EXCEED 5 TONS.
47. Remove assembly from trunnion and place in a horizontal position on a work table.
48. Measure rotor tip to air cylinder clearances for both rotors at inlet and discharge side of air cylinder.
Clearance should be measured along entire length of lobe and for all three lobes on each rotor and recorded.
Rotor tip to case clearance (inlet): 0.011" min
Rotor tip to case clearance (discharge): 0.005" min
49. Clean and lightly apply AEON PD oil inside and outside diameter of timing gear hub where shrink disk half
assembly mates.
Note:
Do not use molybdenum disulfide, molykote, or any other similar lubricants!
50. Lightly oil bolt threads, bolt head bearing areas and tapered surfaces of inner ring of shrink disk half (19).
51. Install shrink disk assembly over timing gear hub projection. Insert locking bolts (metric) through collar and
loosely screw them into threaded holes in timing gear.