Viking Pump TSM630.2: LS-QS Universal Seal - Manual (Page 7)

SECTION TSM 630.2 ISSUE I PAGE 7 OF 12
Elastomeric bellows and PTFE wedge seals generally require
pump disassembly to be replaced (See Disassembly, steps
1-5, page 4).
1. Loosen nuts and remove seal plate, seal plate holder,
seal seat and seal gasket(s).
2. Loosen setscrew in set collar (bellows) or mechanical
seal rotary member (wedge). NOTE: Piping and/or
plugs will need to be removed to access setscrews.
3. The remainder of the mechanical seal may be removed
in conjunction with Step 7 of Disassembly, page 4.
ELASTOMERIC BELLOWS
AND PTFE WEDGE TYPE
SEAL INSTALLATION
COAT ROTOR SHAFT, TAPERED INSTALLATION
SLEEVE AND INNER DIAMETER OF MECHANICAL
SEAL WITH LIGHT OIL BEFORE ASSEMBLY.
FIGURE 7
CARTRIDGE MECHANICAL SEAL
FIGURE 8
1. NOTE: Burrs left on shaft can damage O-ring on seal
sleeve during installation. Inspect shaft for burrs and
remove any found with a fine grade of emery cloth.
2. Clean rotor shaft and face of seal chamber.
3. Slide cartridge seal on shaft until it contacts the seal
chamber face.
4. Follow steps 9-12 on page 6 under Assembly.
5. Insert gland capscrews and secure gland to bracket face.
NOTE: Turn shaft several turns while gland is loose to
center seal; then tighten gland tight enough to compress
gasket. Tighten only enough to contain leakage and not
to distort gland.
6. Lock cartridge seal drive collar to shaft and remove or
turn centering clips out of the way so as to clear the drive
collar.
7. Turn shaft by hand or jog motor to check drive collar for
runout.
8. Connect circulation line or vent stuffing box seals without
line until liquid is present on start up.
NOTE: For maximum seal life, circulation line should be used.
CARTRIDGE TYPE
FIGURE 9
ELASTOMERIC BELLOWS SEAL
CIRCULATION LINE
CONNECTION
SEAL ACCESS
HOLE
MECHANICAL SEAL
(ROTARY MEMBER)
SEAT GASKET
SEAL HOLDER
(NOT USED ON LS)
SEAL PLATE
(PACKING GLAND
ON LS)
NUT
CAPSCREW
SEAL SEAT
SET COLLAR
ASSEMBLY
DANGER !
Before starting pump, be sure all drive
equipment guards are in place.
Failure to properly mount guards may
result in serious injury or death.
VENT CONNECTION
CARTRIDGE
MECHANICAL
SEAL
CENTER
CLIPS
SEAL
COLLAR
NUT CAPSCREW
TAPERED INSTALLATION SLEEVE
Q, QS SIZES
SHAFT