Viking Pump TSM630.3: N-RS Universal Seal - Manual (Page 7)

SECTION TSM 630.3 ISSUE H PAGE 7 OF 13
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.
SEAL REMOVAL
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.
10. Thread the bearing housing with lipseals, end cap,
outer bearing spacer collar and bearings installed into
bracket.
11. Put lockwasher and locknut on shaft. Insert length of
hardwood or brass through port opening between rotor
teeth to keep shaft from turning. Tighten locknut to 170-
190 ft.-lbs. torque. If tang does not line up with slot,
tighten locknut until it does. Failure to tighten locknut
or engage lockwasher tang could result in early bearing
failure and cause damage to rest of pump. Bend one tang
of the lockwasher into a slot on the locknut. Remove the
length of hardwood or brass from the port opening.
12. Adjust pump end clearance as in Thrust Bearing
Adjustment page 10.
13. Reinstall drain plug in casing. Lubricate all grease fittings
with multi-purpose grease, NLGI #2.
MECHANICAL SEAL
REPLACEMENT
This manual deals with the three standard types of mechanical
seals supplied on Universal Bracket models 4323A, 4324A,
4324AH, and 4327A.
1. Cartridge (Figure 6, page 8)
2. Elastomeric O-ring (Figure 8, page 9)
3. PTFE Wedge (Figure 9, page 9)
Identification of seal type is an important step towards
proper maintenance. For mechanical seal types not
shown, see the Seal Installation Drawing (SID) furnished
with the pump or contact a Viking representative.