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8.2 REASSEMBLY OF BLOWER
After thorough cleaning of the seal and
bearing bores of both end plates apply
a thin coat of sealant on the outside
diameter of the new seals and press
them into the end plate using a tool that
will bear on the outer edge of the seal.
Spring side of the seal should be facing
you. Apply a thin coat of grease to the
seal lip.
See page 34 for drawings and
dimensions of seal and bearing pressing
tools.
Using the drive end plate as a fi xture,
support it high enough so the input shaft
of the drive rotor clears the assembly
surface. (Refer to Figure 17). Place
rotors in fi xture with the drive rotor to the
left. (See Figures 17 and 20)
8.2.1 MECHANICAL SEAL
INSTALLATION
1. Clean and deburr seal bore in
endplate. Clean the face of the
carbon and mating ring with alcohol
etc. Apply a thin layer of silicon to
the bottom face of the seal.
2. Place end plate [Item 4] on rotors.
3. Apply a thin coat of lubricant on the
rotor shafts and the inner race of the
bearings. Tap the bearings [13] into
place using a tube with a fl anged
end that will contact both the inner
and outer bearing races. (Refer to
Figure 18).
WARNING
Keep hands and loose clothing away from lobes and gears.
Figure 17 - Rotors Assembled
on Drive End Plate
(Model 4000 with tri-lobe rotors shown)
Figure 18 - Tapping Bearings
into End Plates
Figure 19 - Checking Gear End
Clearances
Figure 20 - Checking
Gear End Clearances
2-LOBE UNITS
ALL MODELS
3-LOBE UNITS
4000 MODELS
3000 AND 5000 MODELS
DRIVE
DRIVEN
DRIVE
DRIVEN
DRIVE
DRIVEN