Gardner Denver Industrial Series, Parts List Operating And Service Manual

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HF-7-602 Page 50
41. 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. 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. To ensure gear remains tight
against bearing race, do not remove tooling until gear has cooled to at least 120°F. Reference
FIGURE 9-9.
Figure 9-9 – PINION GEAR INSTALLATION
Note:
Maximum load applied to threaded rod must NEVER EXCEED 5 TONS.
42. Remove assembly from trunnion and place in a horizontal position on a work table.
43. 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. Record these clearances.
Rotor tip to case clearance (inlet): 0.011" min
Rotor tip to case clearance (discharge): 0.005" min
44. 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!
45. Lightly oil bolt threads, bolt head bearing areas and tapered surfaces of inner ring of shrink disk
half (19).
46. 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.
47. Install shrink disk/timing gear assembly onto rotor shaft and align teeth so timing gear and pinion
gear mesh. Firmly push against bearing inner race. Finger tighten the 12 locking bolts ensuring
the gear can still be rotated on shaft. Reference FIGURE 9-10.