Section V - Servicing
Preparation for New Seal Installation
Inspect the compressor shaft for burrs
♦
or deep scratches at the wear sleeve
area. Using a 100 grit emery cloth,
lightly sand horizontally any rust or
Loctite
™
on the shaft. Using a fine file
or emery cloth, deburr the key area of
the rotor shaft. Cover the keyway with
masking tape to prevent damage to the
new seal during installation.
Clean the seal adapter with fast drying
♦
solvent. Assure that the scavenge drain
in the seal adapter is clean and open.
Place the outer face of the 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.
Apply a thin coat of Loctite
♦
™
290 to the
outer steel case of the seal and position
the seal in the seal adapter bore.
Insert the proper seal driver over the
♦
seal. 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 wear sleeve (in a small
♦
oven) to 350°F.
Do not preheat in
warm oil.
Apply a thin film of Loctite
♦
™
406 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
shaft until the driver bottoms on the
shaft shoulder.
Seal Installation
Apply a thin coat of compressor fluid to
♦
the outer face of the wear sleeve and
seal lip.
Slide the proper seal installation sleeve
♦
against the wear sleeve with the taper
toward the end of the rotor shaft.
Install a new o-ring on the seal adapter
♦
and lubricate with compressor fluid.
Install a new o-ring around the
♦
scavenge port (use petroleum jelly to
hold the o-ring on the seal adapter face
during installation).
Carefully slide the seal adapter with the
♦
new seal installed over the end of the
rotor shaft and up against the adapter
bore.
Using care not to damage the o-ring,
♦
evenly draw the adapter into the bore,
install the four retaining bolts and
tighten to the specified torque.
Remove the installation sleeve.
♦
Apply a thin film of compressor fluid to
♦
the o-ring and seal lip of the outer fluid
slinger.
Install the outer slinger over the end
♦
of the rotor shaft and push into the
scavenge bore using both thumbs.
39
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Страница 80: ...Appendix A Dimensional Drawings QGV 20 25 30 460V tank mounted 76...
Страница 81: ...Appendix A Dimensional Drawings QGV 20 25 30 460V dry tank mounted 77...
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