Pentair STA-RITE - Mechanical Shaft Seal Installation

Maintenance 13
Mechanical Shaft Seal
Installation
Procedure and parts will vary slightly depending on pump style.
• Placebracketonasmooth,flatsurface,pump
sideup.
• ApplyasmallamountofmineraloiltoO-Ringon
stationary seal and press into seal cavity.
Cover ceramic face with cardboard washer and press
straight in using a piece of pipe or tubing.
• Reinstallbracketonmotorusingextremecarenotto
scratch or chip ceramic face of seal with shaft.
• Applyasmallamountofmineraloiltoinside
diameter of rubber ring in rotating seat and
outside of shaft sleeve. Slide rotating seat onto
shaft, polished face first, until it is tight against
ceramicface.
• Compresssealspringandinstallretainingringin
shaft sleeve groove (if used).
• Placeimpellerkeyinmotorshaftkeyway.Slide
impeller on to shaft as far as possible.
• Cleanthreadsthoroughly.
• Applynon-permanentthreadadhesivetoimpeller
capscrew and shaft threads.
• Installimpellerwasher,shakeprooflockwasher,
andcapscrew.
• Installgasketandvoluteonbracket.Useanew
gasketorO-Ringwhenreassemblingtoprevent
leakage (a coat of grease on gasket will aid in future
disassembly and maintenance).
• Applyanti-seizingcompoundtocapscrewsand
tighten securely.
3 4
21
5
6563 0412
6559 0412
6560 0412
6561 0412
6562 0412
Key
If shaft is threaded, cover
threads with tape to protect
seal during installation.
NOTICE Do not scratch
or chip polished ceramic
face. Also . . .do not
touch polished surface.
Polished ceramic face
Cardboard washer
(supplied with seal)