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⚠
DANGER !
Before opening any Viking pump liquid chamber
(pumping chamber, reservoir, relief valve adjusting cap
fitting, etc.) be sure:
1. That any pressure in the chamber has been
completely vented through the suction or discharge
lines, or other appropriate openings or connections.
2. That the driving means (motor, turbine, engine, etc.)
has been "locked out" or made non-operational, so that
it cannot be started while work is being done on pump.
3. That you know what liquid the pump has been handling
and the precautions necessary to safely handle the
liquid. Obtain a material safety data sheet (MSDS) for
the liquid to be sure these precautions are understood.
Failure to follow above listed precautionary measures
may result in serious injury or death.
REMOVAL: CARTRIDGE
MECHANICAL SEAL
Cartridge mechanical seals are designed so that they may be
replaced with minimal pump and piping disassembly
1. Insert brass or plastic bar through port opening between
rotor teeth to keep shaft from turning. Bend up tang of
lockwasher and with a spanner wrench, remove locknut
and lockwasher from shaft.
2. Loosen two set screws in the face of the bearing housing
and remove the bearing housing assembly from the
bracket.
3. Remove the pair of half round rings (K, KK, L, LL, LS sizes
only) under the inner spacer collar from the shaft.
4. Remove any flush or barrier fluid tubes connected to the
seal gland.
5. Replace or turn centering clips to original position.
6. Loosen setscrews on the seal collar to free the cartridge
seal from the shaft.
7. Loosen and remove the two nuts holding the seal to the
pump and slide the cartridge seal out through the bearing
housing opening.
If the pump is to be disassembled further, refer to "Pump
Disassembly" on page 11.
© 2024 Viking Pump, Inc. • Cedar Falls, IA
INSTALLATION: CARTRIDGE
MECHANICAL SEAL
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. Place tapered installation sleeve on shaft. Coat rotor
shaft, tapered installation sleeve, and O-ring in the inside
diameter of cartridge seal sleeve with a generous amount
or equivalent. See "Figure 9" on page 7.
of P-80
®
4. Slide cartridge seal over installation sleeve on shaft
until it contacts the seal chamber face. Remove tapered
installation sleeve from shaft.
5. Place pair of half round rings in groove on shaft (K, KK, L,
LL, LS sizes only) and turn bearing housing assembly into
bracket.
6. Put lockwasher and locknut on shaft. Tighten locknut and
bend one tang of lockwasher into slot of locknut. See
"Table 3" on page 13.
7. Adjust pump end clearance, refer to "Thrust Bearing
Adjustment" on page 14.
8. Insert gland capscrews and secure gland to bracket face
using washers and nuts.
NOTE: turn shaft several turns while gland is loose to
center seal; then tighten nuts enough to compress gland
gasket. Tighten only enough to contain leakage and not to
distort gland.
9. Tighten setscrews on seal drive collar to shaft. Remove or
turn centering clips out of the way so as to clear the drive
collar.
10. Turn shaft by hand or jog motor to check drive collar for
runout.
11. Connect circulation line or vent stuffing box seals without
circulation line until liquid is present on start up.
NOTE: For maximum seal life, circulation line should
be used.
⚠
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.
FIGURE 9
Tapered Installation Sleeve
NOTE: Coat rotor shaft, tapered installation
sleeve and inner diameter of mechanical seal
with P-80
or equivalent before assembly.
®
P-80
is a registered trademark of International Products Corporation
®
TSM 2700 | Issue A | Page 7 of 26
Shaft
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