22
06
Disassembly and Reassembly Instructions
Operator’s Manual 2010 Rev B p/n 2010
DISASSEMBLY (6000 SERIES)
1. Remove all oil drain plugs and vent plugs from
both ends of the blower. Before removing
any parts, match-mark each component
with a punch. This will allow the blower to be
reassembled with the components in the same
position. Match-mark the covers, endplate,
housing, and both rotors.
2. Remove drive key from drive shaft. Remove
gear end cover. Remove drive end cover. This
is best accomplished by using two small pry
bars at the dowel pins. Tap on cover with a
mallet while putting pressure on the cover with
the pry bar. The cover will slowly move off the
dowel pins. Inspect the drive shaft for grooves
and burrs. Remove drive shaft seal from drive
end cover.
3. Carefully remove the drive seal wear ring from
the drive shaft. The simplest method to do so
is to use a cut-off wheel and a die grinder. The
hardened ring will typically snap open once it is
cut most of the way through.
4. Remove washer from the rotor shaft on the
drive end. Remove oil slinger assemblies.
Remove bolts from drive end endplate.
5. Use 4 jacking screws on drive end endplate.
Apply even pressure to jack screws to push
the endplate from housing and rotor shafts.
Remove shims from endplate. Remove
bearings and seal assembly from endplate.
Rotate unit. Remove bolts and washers from
rotor shafts on the gear end. Remove the
timing gear bolts completely from the driven
rotor. Remove the timing gear from the rotor
shaft by using a gear puller.
See Figure 6-1
.
Rotate the gear as it is being removed to
prevent binding. Inspect gear teeth for wear
and pitting. Remove rotor key from keyways.
Inspect rotor shaft keyway for wear and
damage.
6. Remove bolts from gear end endplate.
7. Use 4 jacking screws on the gear end
endplate. Apply even pressure to the jack
screws to push the end plate from the housing.
Remove screws. Remove retainer plate. Push
rotors out of gear end endplate. Remove
bearings and remove bearing shield. Save
shims and measure for proper clearance for
rebuilding the unit. Remove seal assembly
from the endplate. OR Using a large arbor
press, orient the blower drive shaft down,
supported by the ports and use a straight bar
(such as a puller bar shown in
Figure 6-1
)
to put even pressure on the gear end of the
rotors. Once the rotors are pressed to flush
with the bearings, insert metric bolts in to the
rotor or use a spacer slightly smaller than the
shaft diameter to press the rotors through the
bearings. Save shims and measure for proper
clearance for rebuilding the unit. Remove seal
assembly from endplate.
8. Remove seals from the rotors with a plastic
mallet or by tapping towards the end of the
rotor shaft.
9. Use a hammer and brass bar to drive bearing
and seal housing from endplates. Inspect
bearing wear pattern and seal for wear and
heat marks. Clean all parts before inspecting.
Check the rotors’ bearing and seal fits for
bearing spinning along with seal housing on
the rotor shaft. Check bearing bores and seal
bores in the endplate for spinning of bearings
and seal housing.
ASSEMBLY (3200 AND 4600)
A maintenance kit containing all the components
that are replaced during a normal blower overhaul
is available from Tuthill Vacuum and Blower
Systems. Be sure to have these parts, at a
minimum, on hand prior to assembly. Be certain
to have your serial number available when you
contact the factory.
Check all parts to make sure they are clean and
free of burrs or nicks that may have occurred when
the blower was being disassembled. Check the
repair kit for the correct parts needed to complete
the assembly of the blower. Make sure you
have the proper tooling and training required to
assemble the blower. Take the proper time to read
the manual before you begin.
Summary of Contents for 3200
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