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STATIONARY SEAT ASSEMBLY:
See "Figure 9" on page 7, "Figure 10" on page 7,
"Figure 12" on page 8 and "Figure 13" on page 8.
All Sizes: Coat the outside diameter of the seat ring
assembly and the inside diameter of the seal housing bore
with SAE 30 oil or food grade equivalent. Align the slot in
the back of the seal seat with the anti-rotation pin in the
bottom of the casing seat bore and start the seal seat into
this bore. Protect the lapped surface of the seal seat with
a disc of clean cardboard, and press the seal seat into this
bore until it is firmly at the bottom of the bore. A hammer
handle or wood dowel will serve to press against the
cardboard disc and seat.
ASSEMBLY OF SEAL ROTATING PORTION:
HJ, HL, AS, AK, AL: (see "Figure 11" on page 7)
- Generously coat the inside diameter of the rotating
assembly, shaft and tapered sleeve with P-80
equivalent. Be sure the shaft is free of any scratches,
nicks and burrs. Check the internal parts (wedge or
O-rings and carbon washer) of the rotating portion, so that
the parts concentrically align. This ensures the internal
parts will not be pinched or twisted during installation. With
the shaft pointed upward, push the rotating portion down
along the shaft, onto the large shaft diameter behind the
rotor. Remove the holding clips, which hold the spring-
loaded disc away from wedge or O-Rings and carbon
parts. See "Figure 8" on page 6. Push the seal
against the rotor hub and tighten the set screws to lock the
seal to the shaft. Remove the tapered sleeve.
GG: The rotating portion of the mechanical seal for the
GG4197 size pump does not have set screws to drive it,
and must depend upon interference fit with the rotor hub.
See "Figure 11" on page 7. The rotating portion must
be disassembled before the retainer (cartridge containing
spring, disc, wedges or O-Ring and carbon face) can be
pressed upon rotor hub. See "Figure 10" on page 7
or "Figure 13" on page 8.
To disassemble the rotating portion of the seal, compress
the carbon face and rapidly depress the retaining ring
through the notch at the end of the retainer cartridge, as
shown in "Figure 14" on page 8.
Press the retainer cartridge onto the rotor hub. See
"Figure 11" on page 7.
At the factory, an installation tube is used to press the
retainer cartridge onto the rotor hub. In lieu of a special
tool, a 6-1/2" length of one-inch schedule 40 pipe, or some
blocks of wood and a light hammer can be used.
Lubricate the rotor hub with PTFE paste, grease or SAE
30 oil, and start the retainer onto the leading edge of the
rotor hub as evenly as possible.
Insert one inch pipe onto the retainer cartridge and press it
against the rotor hub. See "Figure 11" on page 7. If a
pipe is not available, with two blocks of wood (one in each
hand), push on the outside edge of the retainer to force
the retainer down the hub. It may be necessary to use a
length of hard wood and a light hammer to completely set
the retainer cartridge against the back of the rotor.
Check the dimension from the end of the retainer to a
machined portion on the back of the rotor. Check at least
two places 180 degrees apart. The runout should not
exceed 0.003" (the plane formed by the end of the retainer
should be perpendicular to the shaft as closely as possible).
© 2019 Viking Pump, Inc. • Cedar Falls, IA
FIGURE 9: PTFE-FITTED MECHANICAL SEAL
1. Retainer Cartridge
2. Springs
or
®
3. Wedge
4. Rotating Face (Washer)
FIGURE 10: MECHANICAL SEAL FOR GG4197
1. Retainer Cartridge
2. Springs
3. Wedge
4. Rotating Face (Washer)
5. Stationary Seat
SEAL RETAINER CARTRIDGE ON ROTOR HUB
(HJ, HL, AS, AK, AL SIZES)
Casing
8
Rotor
1
2
3
4
5
6
Shaft
5. Stationary Seat
6. Seat Ring (Gasket)
7. Anti-Rotation Pin
8. Drive Set Screws
Seal Seat Bore
Casing
Rotor
2
1
8
Hub
3
7
4
5
6. Seat Ring (Gasket)
7. Disc
8. Retaining Ring
9. Anti-Rotation Pin
FIGURE 11:
Retainer Cartridge
Rotor
Groove For
Retaining Ring
Shaft
Tubular Installation
Tool
Interference
Fit
TSM 1741 | Issue B | Page 7 of 20
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