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FIGURE 12: MECHANICAL SEAL FOR SEP1 PUMPS
(HJ, HL, AS, AK, AL SIZES)
Casing
2
7
1
3
Shaft
1. Stationary Seat
2. O-Ring
3. Rotating Face (Washer)
4. O-Ring
FIGURE 13: MECHANICAL SEAL FOR GG4197-SEP1
Rotor
5
6
4
1. Stationary Seat
2. O-Ring
3. Rotating Face (Washer)
4. O-Ring
FIGURE 14
TSM 1741 | Issue B | Page 8 of 20
8
4
6
5
5. Retainer Cartridge
6. Springs
7. Anti-Rotation Pin
8. Drive Set Screws
Casing
2
7
1
3
5. Retainer Cartridge
6. Spring
7. Anti-Rotation Pin
Clean off the assembly just installed. Insert the spring and
disc. Lubricate the two piece wedge or O-Ring inside and
outside with SAE 30 oil or food grade equivalent. Place the
tapered sleeve furnished with the replacement seals on the
shaft against the largest shaft diameter and coat it with SAE
30 oil or food grade equivalent. Push the wedge or O-Ring
assembly over the tapered sleeve and using the carbon
washer, push the wedge or O-Ring onto the retainer against
the disc. Align the retainer with the carbon washer indents,
compress and secure with retainer ring. When the carbon
face is compressed against the spring, some "drag" should
be felt, but the spring must be able to push the wedge or
O-Ring and carbon face out against the retainer ring.
2. Remove the installation sleeve.
3. All models - Flush sealing faces of both the rotary member
and the seal seat with light oil, and install the rotor and shaft.
Push the rotor and shaft into the casing slowly until the ends
of the rotor teeth are just below the face of the casing.
Place the gasket on the head and install the head and idler
assembly on the pump. The pump head and casing were
marked before disassembly to ensure proper reassembly.
If not, be sure the idler pin, which is offset in the pump
head, is positioned toward and equal distance between the
port connections to allow for proper flow of liquid through the
pump.
4. Tighten the head capscrews evenly.
5. If the pump was equipped with a relief valve, and was
removed during disassembly, install on the head with new
gaskets. The relief valve adjusting screw cap must always
point towards the suction port. Refer to "Figure 3" on
page 10. For relief valve repair or adjustments, refer to
"Pressure Relief Valve Instructions," page 9.
6. In 2005, the use of single seal bearings were phased out.
Pumps of all sizes now use "Sealed for Life" bearings
that have seals on both sides. The new bearings can be
installed either side first and do not need to be packed
with grease.
7. Install the single row ball bearing in the casing. (For older
models using single seal bearings, pack the ball bearing
with multi-purpose grease, NLGI #2, and install in the
casing with the sealed end towards the head end of the
pump.) Install the inner snap ring in GG, HJ and HL size
pumps. See "Figure 6" on page 5.
AS, AK, AL: Pumps do not have a snap ring; a bearing
retainer washer must be assembled over the end of the
shaft before the bearing is assembled. See "Figure 7" on
page 5.
8. AS, AK, AL: Place the bearing spacer over the shaft,
and against the single row ball bearing in the casing. See
"Figure 7" on page 5.
9. GG, HJ, HL: Install the shaft snap ring in the groove in the
shaft. See "Figure 6" on page 5.
10. For models using single seal bearings, pack the
lubrication chamber between the inner ball bearing and
the double row ball bearing in the thrust bearing assembly
approximately half full with multi-purpose grease, NLGI #2.
See "Figure 6" on page 5 and "Figure 7" on page
5.
© 2019 Viking Pump, Inc. • Cedar Falls, IA
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