Viking Pump TSM343.3: Vi-Corr Pumps - Manual (Page 13)

SECTION TSM 343.3 ISSUE F PAGE 13 OF 20
4. If installing new mechanical seal, check the driver shaft keyway and the bracket seal bore
for burrs and remove any that are found. The sealing faces on mechanical seals should not
be touched with anything but clean fingers or a clean cloth.
Rubber Bellows Type Mechanical Seals
(REFER TO FIgURE 10)
Install retaining ring into the retaining
ring groove on the shaft. Apply a
liberal coating of lubricant to the
shaft. Start the rotary member;
seal face out, onto shaft and push
along shaft until the rotary member
contacts seal retaining ring.
Lubricate outside diameter of the
stationary seat O-ring. Press the
stationary seal seat into the bracket
bore, lapped face out.
PTFE Fitted Type Mechanical Seal
(REFER TO FIgURE 11)
Install retaining ring into the
retaining ring groove on shaft.
Apply a liberal coating of
lubricant to the shaft. Slide the
rotary member onto the shaft
and push along until it contacts
the retaining ring. Make sure the
rotating seal face points towards
you when installing. Tighten all
set screws securely to the shaft.
NOTE: Some PTFE seals are
equipped with holding clips
which must be removed after seal is installed on the shaft to release the seal springs.
Lubricate the outside diameter of the stationary seat PTFE wedge. Press the stationary seal
seat into the bracket bore aligning the notch in back of the seal seat with the drive pin in the
bottom of the seal bore in the bracket.
5. Flush the sealing faces of both rotary members and seal seat with lubricant.
6. Slide the shaft into the bracket ball bearing and install the snap ring. Place O-ring into the
O-ring groove. Install the alignment sleeves in the proper holes by tapping with a soft faced
hammer.
BRACKET
STATIONARY
SEAT
DRIvER
SHAFT
RETAININg
RINg
ROTARY
MEMBER
BRACKET
STATIONARY
SEAT
DRIvER SHAFT
ROTARY
MEMBER
RETAININg
RINg
SEAL
DRIvE
PIN
FIgURE 10
FIgURE 11