Preparation For New Seal Installation; Seal Installation - Quincy QSF Series Instruction Manual

Section V– Servicing

Preparation for New Seal Installation

1. 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" that was between the wear sleeve and
shaft. Using a fine file or emery cloth, deburr the key area of the rotor shaft. Cover the keyway with
masking tape to prevent any damage to the new seal during installation.
2. Clean the seal adapter with clean, 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.
With the 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 and the single lip facing the scavenge cavity and
drive motor.
3. 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 seal adapter bore. Insert the proper seal driver
over the seal. See Parts Manual for tool list for your specific 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.
4. Preheat the seal wear sleeve to 350
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 shaft until the driver bottoms
on the shaft shoulder.

Seal Installation

1. Apply a thin coat of compressor fluid to the outer face of the seal wear sleeve and seal lip.
2. Cover the keyway in the compressor shaft with masking tape so there is no chance of damage
occurring to the seal face during installation.
3. Inspect the bearing shims for damage. Assure they are installed correctly with the thickest shim
toward the seal adapter.
4. 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.
5. 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.
6. 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.
7. Reinstall drives motor and coupling. Reinstall the coupling guards before starting the compressor.
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in a small oven. Do not preheat in warm oil. Apply a thin film
Quincy Compressor – QSF Series