SECTION TSM 410.2 ISSUE D PAGE 7 OF 10
FIGURE 8
FIGURE 9
COAT WITH LIGHT OIL
BEFORE ASSEMBLY
COAT WITH LIGHT OIL
BEFORE ASSEMBLY
TAPERED SLEEVE
MECHANICAL SEAL
(ROTARY MEMBER)
FIGURE 10
1. Install bracket bushing. If bracket bushing has a
lubrication groove, install bushing with groove at 6.00
o’clock position in bracket.
2. Install lip seal in bracket. Refer to Figure 7.
FIGURE 7
LIP SEAL FOR SEAL CHAMBER
TAPERED INSTALLATION
SLEEVE
SHAFT
BRACKET
BRACKET
BUSHING
Prior to installing rotating portion of mechanical seal, prepare
and organize rotor shaft, head and idler assemblies and
appropriate gaskets for quick assembly.
Never touch sealing faces with anything except clean hands
or clean cloth. Minute particles can scratch the seal faces and
cause leakage.
3. Coat idler pin with non-detergent SAE 30 weight oil and
place idler and bushing on idler pin in head.
4. Clean rotor hub and bracket seal housing bore. Make
sure both are free from dirt and grit. Coat outer diameter
of seal seat and inner diameter of seal housing bore with
non-detergent SAE 30 weight oil.
5. Install seal seat in seal housing bore, Refer to Figure
8. Make sure drive pins are located in slots in bracket
bushing.
6. Place tapered installation sleeve on shaft, Refer to
Figure 9. Sleeve is furnished with H, HL, K, KK, L, LQ
and LL size replacement mechanical seals. Sleeve for Q
and M size pumps may be purchased from Viking Pump
at additional cost. Coat rotor shaft, tapered installation
sleeve and inner diameter of mechanical seal rotary
member with a generous amount of non-detergent SAE
30 weight oil. Petrolatum may be used but grease is not
recommended.
NOTE: PTFE fitted seals come with installation sleeve
inside the rotary member. DO NOT remove this sleeve.
Coat shaft with oil and proceed with step 7.
7. Place seal spring on shaft against rotor hub. Refer to
Figure 10.
NOTE: Model M4625 uses a seal spring washer. Install
washer against rotor hub and then install seal spring.
8. Slide rotary member, lapped contact surface facing away
from spring, over installation sleeve on shaft until it is
against spring. Slot in the seal must line up with drive pin
shaft.
NOTE: For PTFE seals the rotary member and installation
sleeve go on together.
Do not compress spring.
Flush sealing faces of both rotary member and stationary
member with non-detergent SAE 30 weight oil just before
installing rotor and shaft.
9. Coat rotor shaft with non-detergent SAE 30 weight oil.
Start end of shaft in bracket bushing and turn from right
to left, slowly pushing until ends of rotor teeth are just
below face of casing.
Leave rotor in this position. Withdrawl of the rotor and
shaft, may displace seal rotating face and result in
damage to seal.
(10 pages)
(10 pages)
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