Quincy Compressor QMA Series Instruction Manual page 54

!lJAN G&K!
.- . .. --—.
inner jaws. Using a ratchet and socket, turn
L
Prior to performing any maintenance it is
necessary to disconnect, lock out and tag out the
electrical power supply. Fadure to do so could
result in serious personal injury or death.
1. Clearly mark both coupling halves so they are
reassembled in the same configuration that they were
removed. NOTE: reassembly of the coupling
halves different from their removai can resuIt in
excessive vibration.
2. Remove the shaft key.
3. Remove the fluid shaft seal adapter retaining bolts.
4. Using two of the fluid shaft seal adapter retaining
bolts as "jack" bolts, pull the seal adapter away from
the suction end of the compressor.
!NOTICE!
It is important to inspect all seal components to
determine a cause for the premature seal failure.
Failure to find and repair the cause of failure could
result in a future premature failure.
5. Place the fluid seal adapter on a clean work surface
and perform the following steps:
a.
b.
c.
d.
e.
With the machined surface of the fluid seal
adapter down, insert two small, flat screw
drivers under the outer lip of the fluid
slinger and pop the slinger from the seal
bore.
Using a brass drift, tap the shaft seal
assembly from the seal bore.
Inspect all seal lips for excessive wear
or lip flaws or damage.
Inspect the outer O-ring on the fluid
siinger for cuts or nicks.
Use the tools listed in the Parts Manual
for vour snecific machine needs.
f. To remove the seal wear sleeve, slide the
wear sleeve removal tool over the end of the
shaft and allow the jaws of the tool to snap
on the backside of the wear sleeve. Tighten
the outer shell of the tool down over the
the puller jack screw clockwise in against the
end of the rotor shaft.
!Caution!
I
Do Not use an impact wrench with this tool.
I
Preparation for New Seal Installation
1.
2.
3.
4.
51
Inspect the rotor shafl for burrs or deep
scratches at the wear sleeve area. Using a 100
grit emery cloth, lightly sand horizontally any
rust or LOCTITE" that was between the wear
sleeve and rotor shaft. Using a fine file or emery
cloth, deburr the key area of the rotor shaft and
cover the keyway with masking tape to prevent any
damage to the new seal during installation,
Clean the fluid seal adapter with a clean fast
drying solvent. Ensure that the scavenge line
fitting and cavity is clean and open. Place the
outer face of the fluid seal adapter on a flat, hard
surface. Remove the new triple lip seal from the
package and inspect for damage or imperfections
on the seal lips. With the fluid seal adapter
sitting on the outer face, the mechanic would be
looking down on the two lips that face the same
direction facing toward the rotor. The single lip
should face the scavenge cavity and drive motor.
With the lips of the seal facing the correct
direction, apply a thin coat of LOCTITE" 290 to
the outer steel case of the seal and position the
seal in the fluid seal adapters bore. Insert the
proper seal driver over the seal. See Parts
Manual for tool list for vour soecific
machine needs. Insert the proper wear sleeve
driver in the seal driver and tap the new seal
into the bore with a medium sized hammer.
Preheat the seal wear sleeve to 350° Fin a small
oven. Do not preheat in warm oil. Apply a thin
film of LOCTITE@ to the inner diameter of the wear
sleeve and immediately install on the compressor
shaft using the proper wear sleeve driver. Drive the
wear sleeve on the shail until the driver bottoms on
the shaft shoulder.