ILRB-3000 GEA20261
RAS and RAS-J WHISPAIR Blowers
Page 19 of 33
B - Installing Gears with Gear Locking Assemblies
1. Apply Neverseez paste on the gear locking device screw threads, under the screw heads, on the tapered rings, on the collar
tapers, and on the gear hub outside diameters.
2. Slide each tapered ring collar and the web clearance holes and screw them loosely into the opposite collar. Note: Do not
tighten the screws at this time.
3. Degrease the gear hub bore and shaft. The gear fit must be free of lubricant.
4. Install two 12-inch-long threaded rods (see Table 5 for size information) in the bearing carrier puller holes. Line up the gear
puller holes with the rods and use the proper nuts on the guide rods to push the gears on flush with the shaft end.
Make sure that the gear match marks line up. Snug up any three or four equally spaced locking screws.
5. Set the impeller timing as described under Step 4 of Operation C.7. Once satisfactory timing is achieved, use a calibrated
torque wrench to tighten the locking screws (values noted in Table 7). Tighten all of the locking screws gradually in either a
clockwise or counter-clockwise sequence, not in a diametrically opposite sequence. Tighten the screws half a turn at a time.
Check that the screws cannot be turned any more by applying the specified torque.
Removing 10” Taper Bore Gears
1. Remove the gear nut.
2. Install Gear Remover within 1/8 inch of the gear face. Note: This gap is necessary to unseat the gear from the shaft taper.
3. Apply Neverseez on 3/4-
10X3” long, grade 8 cap screw threads and under the hex heads.
4. Install cap screws through the gear remover holes into the gear
puller holes. Tighten the cap screws a quarter turn at a time in
either a clockwise or counter-clockwise sequence, not a
diametrically opposite sequence, until the gear is unseated from
the taper.
If the gear does not come off using the above procedure, use the
hydraulic assist feature provided in the gear in addition to the
above steps. A hydraulic pump capable of generating about
20,000 PSI pressure is required. Make sure that all of the tubing
and fittings are good for 40,000 PSI. The gear connections are
1/4-inch NPT. Hook the pump up
to the bottom connection.
Leave the top hole open. Crank the pump until some oil comes
through the open hole bleeding all air out. Close the top hole
with a 1/4-inch NPT solid steel plug. Crank the pump up until
the gear comes off. Do not exceed 20,000 PSI oil pressure. If
you are not sure how to use the hydraulic removal system,
contact the factory.
Installing 10” Taper Bore Gears
1. Block the impellers inside the blower using wooden
blocks/wedges.
ILRB-3000 GEA20261 RAS and RAS-J WHISPAIR Blowers.pdf 19
03/09/2015 13:21:27
Summary of Contents for Roots RAS Whispair
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