Viking Pump TSM630: H-LL Universal Seal - Manual (Page 10)

SECTION TSM 630 ISSUE H PAGE 10 OF 12
FIGURE 11
TAPERED INSTALLATION SLEEVE
SHAFT
MECHANICAL SEAL
ROTARY MEMBER
end cap into the bearing housing until tight against the
bearing. Lock in place with two set screws in the flange
of the bearing housing.
14. Put lockwasher and locknut on shaft. Insert length of
hardwood or brass through port opening between rotor
teeth to keep shaft from turning. Tighten locknut to 50-
70 ft.– lbs. Torque (H, HL) or 100-130 ft. – lbs. Torque
(K, KK, L, LQ, LL) . Bend one tang of lockwasher into
slot of locknut. If tang does not line up with slot, tighten
locknut until it does. Failure to tighten locknut or engage
lockwasher tang could result in early bearing failure and
cause damage to pump.
Remove length of hardwood or brass from port opening.
4. Move rotary member all the way on the rotor shaft until
it is against the rotor hub. If the seal uses setscrews to
secure the seal to the shaft, tighten the setsecrews once
the seal is in place. Some PTFE seals are equipped with
holding clips which compress the seal springs. Remove
holding clips to release springs after seal is installed on
shaft.
5. Lubricate outer diameter of seal seat gasket with oil.
Press seal seat into bore until back, unlapped face
bottoms in bore. Make sure the seat anti-rotation pins
are aligned with slots in the bracket bushing.
6. Coat rotor shaft and face of mechanical seal with light
oil. Start end of shaft in bracket bushing turning from
right to left, slowly pushing rotor in casing.
7. Coat idler pin with light oil and place idler and bushing
on idler pin in head. If replacing with carbon graphite
bushing, Refer to installation of Carbon Graphite
Bushings, page 11.
8. Using a .010 to .015 inch head gasket, install head and
idler assembly on pump. Pump head and casing were
marked before disassembly to insure proper reassembly.
If not, be sure idler pin, which is offset in pump head,
is positioned toward the equal distance between port
connections to allow for proper flow of liquid through
pump. If pump is equipped with jacketed headplate,
install at this time along with new gasket.
9. Tighten head capscrews evenly.
10. Slide inner spacer collar over shaft with recessed end
facing rotor. H and HL size bearing spacer collars are
not recessed.
Place pair of half round rings on shaft and slide inner
bearing spacer collar over half round rings to lock them
in place. There is no pair of half round rings on the H
and HL size pumps.
11. Install the lip seal (lip toward end of shaft) in the bearing
housing and turn the bearing housing into the bracket.
12. Pack the ball bearing with grease, place on the shaft and
push or drive into place in housing.
13. Install the lipseal (with lip toward end of shaft) and
bearing spacer collar in the outer end cap and turn the
THRUST BEARING ADJUSTMENT
SIZE H, HL, K, KK, L, LQ, LL PUMPS
PUMP
SIZE
MODEL
STANDARD
END
CLEARANCE
(Inch)
TURN BRG.
HOUSING
C.C.W.
LENGTH
ON O.D.
(Inch)
ADDITIONAL
LENGTH ON
O.D. BRG.
HOUSING FOR
.001” END CL.
(Inch)
H
HL
124A
4124A
4124B
126A
4126A
123A
4123A
0.003 .75 .22
127A
4127A 0.005 1.125
K,KK
L,LQ
LL
124A
4124A
124AE
4124AE
4124B
126A
4126A
123A
4123A
0.005 1.25 .25
127A
4127A 0.008 2
TABLE 1
3. Place tapered installation sleeve on the shaft. Coat
tapered sleeve and inside of the rotary member
with a generous quantity of light oil. Grease is not
recommended. Start rotary member on shaft and over
tapered sleeve. Refer to Figure 11.
1. Loosen the two set screws in the outer face of the
bearing housing and turn this thrust bearing assembly
clockwise until it can no longer be turned by hand. Back
off counter-clockwise until the rotor shaft can be turned
by hand with a slight noticeable drag.
2. For standard end clearance, back off the thrust bearing
assembly the required length measured on the outside
diameter of the bearing housing. See Table 1.
3. Tighten the two self-locking type “Allen” set screws, in
the outboard face of the bearing housing, with equal
force against the bracket. Your pump is now set with
standard end clearances and locked.
NOTE: Be sure the shaft can rotate freely. If not, back off
additional length on outside diameter and check again.