Viking Pump TSM142.1: H-LL 225/4225 - Manual (Page 9)

SECTION TSM 142.1 ISSUE F PAGE 9 OF 13
fIgURE 7
fIgURE 9
fIgURE 8
ASSEMBLY
Standard Mechanical Seal
(PTfE fitted Type)
The seal type shown in Figures 8, 9, 10 are setscrew driven
and the stationary seats have anti-rotation pins which mate
with slots in the end of the bracket bushing.
1. Install bracket bushing. If bracket bushing has a
lubrication groove, install bushing with groove at 6:00
o’clock position in bracket. If carbon graphite, refer to
Installation of Carbon graphite Bushings, page 11.
2. Install lip seal in bracket. Refer to figure 7.
3. Clean rotor hub and bracket seal housing bore. Refer to
figure 8. Make sure both are free from dirt and grit. Coat
outer diameter of seal seat gasket and inner diameter of
seal housing bore with non-detergent SAE 30 weight oil.
4. Start seal seat in seal housing bore. Make sure seat
anti-rotation pins are aligned to engage slots in end of
bracket bushing. Refer to figure 8.
5. Using a cardboard disc to protect lapped face of seal
seat, press seal seat assembly to bottom of seal housing
bore using a piece of wood. An arbor press can also be
used to install the seal seat. Seal seat must be started
square and carefully pressed to bottom of seal housing
bore.
K size pumps require a 0.25 inch spacer between seal
and rotor hub to properly position seal on shaft.
6. Place tapered installation sleeve (furnished with H, HL,
K, KK, L, LQ and LL size replacement mechanical seals)
on shaft. Refer to figure 9. Coat inner diameter of
seal rotary member, tapered installation sleeve and the
shaft with a generous quantity of non-detergent SAE 30
weight oil. Place rotary member on shaft over sleeve and
against hub of rotor. Refer to figure 10.
fIgURE 10
INSTALLATION TOOL
ANTI-ROTATION PINS ALIgNED
WITH SLOTS IN BUSHINg
COAT WITH LIgHT OIL
BEfORE ASSEMBLY
BRACKET SEAL HOUSINg BORE WITH SEAL SEAT
INSTALLED. NOTE SPECIAL INSTALLATION TOOL USED
fOR fACTORY ASSEMBLY.
TAPERED INSTALLATION SLEEVE
SHAfT
MECHANICAL SEAL
ROTARY MEMBER
ROTOR HUB
MECHANICAL SEAL
ROTARY MEMBER
SHAfT
0.25 INCH THICK SPACER COLLAR
USED HERE ON “K” SIZE PUMP.
LIP SEAL fOR SEAL CHAMBER
TAPERED
INSTALLATION SLEEVE
BRACKET
BRACKET
BUSHINg
SHAfT