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DISASSEMBLY AND REASSEMBLY
08
Operator’s Manual 2009 Rev B p/n 2009
DISASSEMBLY OF BLOWER
1. Drain lubricant from either end and disconnect
all external oil lines. Do not attempt to remove
oil distribution line bushing in the non-drive end
plate until the end cover has been removed
and the internal fittings are disconnected. The
oil filter and heat exchanger may be removed
or left fastened to the cover. Mark piping and
other parts so they can be placed in their
original position when reassembling.
Free End Disassembly
2. Support free end cover using a lifting strap.
Remove cap screws and install two of them
as jacking screws in the tapped holes next to
the dowel pins. Use two studs 8 in. (203 mm)
long to assist in supporting the cover until it
has cleared the dowel pins. It is not necessary
to remove oil pump and the adapter plate
from the cover unless these items are being
replaced.
3. Remove large O-ring, four slinger cap screws
(5/16-12 point socket required), and oil slinger.
Tap the drive shaft lightly with a mallet to
remove it from the rotor shaft. Remove cap
screws and the oil retaining rings.
Gear End Disassembly
4. Remove drive shaft key. Remove all burrs and
other defacements from the drive shaft.
All series except Seal/Lube Series 9 or
Series 66/69:
Remove cap screws and place
two screws in jackscrew holes provided to
remove seal adapter plate. Tap out the seal
and discard O-ring.
Seal/Lube Series 9 or Series 66/69:
Remove
cap screws. Remove seal housing and remove
stator portion of the mechanical seal. Using a
spanner wrench, remove the adapter sleeve by
turning counterclockwise. Remove mating ring
and O-rings.
5. Support drive end cover as done on the non-
drive end. Remove cap screws. The drive
end cover also has jacking screw holes, but
it must slide off the spherical roller bearing
on the drive shaft. To keep the bearing outer
race from cocking, use the drive shaft bearing
pressing tool.
See Figure 13-2 on page 44
.
6. Remove cap screws and the drive shaft.
Pull the bearing at this time unless it is to be
pressed apart after the drive shaft has been
removed.
7. Stand the blower up on the non-drive end on
6 in. × 6 in. (152 × 152 mm) blocks. Remove
cap screws from the driven gear and align the
match marks on the timing gear teeth. Using a
suitable puller or extended pry bar, remove the
gear shell from their hubs. The shell and hub
are matched. Do not interchange. Re-mark if
the original markings are no longer visible.
8. Unlock spanner nut lock washers and remove
spanner nut and lockwashers. Remove gear
hubs with the puller. Remove gear keys.
9. Remove oil sight gauge. Remove cap screws
and mounting feet (Series 66 and 69). All feet
are mounted on 1-1/8 in. (28.7 mm) hollow
locating dowels from which they should easily