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06
Disassembly and Reassembly Instructions
Operator’s Manual 2010 Rev B p/n 2010
Gear End Assembly (3200 and 4600)
1.
Seat the rotors on a fixture with the gear end of
the rotors upward and in the “T” position. Make
sure the drive rotor is in the correct location for
the proper flow and rotation required for the
application.
2. Install the end plate and housing assembly
onto the rotors. Using a seal pressing tool,
press the seal assembly onto the rotor shafts
and into the bores of the end plates. Add
shims as needed. Install the seal slinger. Add
shims as needed. Press the oil shield onto the
rotor shafts. The oil shield is part of the seal
assembly, but it must be pressed on after the
seal assembly is installed.
3. Install the bearings press until seated. Install
the retainer and bolts. Install the keys into the
shaft. Install the gear assembly. Install the solid
gear onto the long-tail drive rotor and two-piece
gear onto the driven rotor. Install the locks.
Install the screws.
Drive End (Free End) Assembly (3200
and 4600)
1. Turn the blower over. Set on the face of the
gears and with feeler gauges check the gear
end for proper clearances.
2.
See Figure 6-5
regarding bearing bore stack
up and seal measurement.
3. Put depth micrometer on the housing and
measure the distance to the rotor face or use
flat block and feeler gauge. Add shims to get
proper free end clearances. Install O-ring into
groove.
4. Install end plate onto dowels. Bolt down with
screws. With feeler gauge, check free end
clearance. Adjust with shims appropriately.
5. Install seal assembly onto rotor shafts and into
end plates. Press the slinger onto the shaft.
Press the oil shield onto the shaft. Install the
bearings. Install the slingers. Tighten the set
screws into the shaft. Install the washer and
install flat-head cap screw into the end of the
shaft.
.004”
GEAR END CLEARANCE
A
A
B
DETAIL A
SCALE 3:1
EXAMPLE:
A = 1.511
B = 1.495
C = 0.010
E = 0.004
1.511 - (1.495 + 0.010) = 0.006
0.006 + 0.004 = 0.010 (HEIGHT OF SHIM STACK-UP)
A:
DIMENSION FROM END PLATE
FACE TO BEARING BORE STEP
B:
SEAL ASSEMBLY HEIGHT
C:
BEARING SHIELD THICKNESS (0.010")
D:
DIMENSIONAL DIFFERENCE BETWEEN
BEARING BORE LIP AND SEAL ASSEMBLY
HEIGHT PLUS BEARING SHIELD
THICKNESS
E:
DESIRED GEAR END CLEARANCE
A - (B + C) = D
D + E = HEIGHT OF SHIM STACK-UP
Figure 6-5 – Bearing Bore Stack-Up and Seal Measurement
Содержание 3200
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