Viking Pump TSM142.2: LS-M 225/4225 - Manual (Page 7)

SECTION TSM 142.2 ISSUE E PAGE 7 OF 14
5. Tap the shaft forward approximately ½ inch and check
for a pair of half circle, round wire rings under the inner
bearing spacer collar. See Figure 4.
NOTE: These must be removed before rotor and shaft
can be removed from the pump. (These rings are not
used in Q, QS and M size pumps.)
6. Carefully remove rotor and shaft to avoid damage to the
bracket bushing.
7. Remove the packing gland from side of bracket.
8. Loosen the four setscrews over the inner and outer end
caps. Remove both end caps, lip seals and bearing
spacer collars. See Figure 4.
The inner cap can be removed through the side opening
of the bracket.
9. Remove the packing and packing retainer washer.
10. Clean all parts thoroughly and examine for wear and
damage. Check lip seals, ball bearings, bushings
and idler pin and replace if necessary. Check all other
parts for nicks, burrs, excessive wear and replace if
necessary.
Wash bearings in clean solvent. Blow out bearings with
compressed air. Do not allow bearings to spin; turn them
slowly by hand. Spinning bearings will damage race
and balls. Make sure bearings are clean, then lubricate
with non-detergent SAE 30 weight oil and check for
roughness. Roughness can be determined by turning
outer race by hand.
If bearings have roughness, bearings will need to be
replaced.
11. Casing can be checked for wear and/or damage while
still mounted on bracket.
5. Coat the idler pin with light oil and place the idler and
bushing on the idler pin in the head. If replacing a carbon
graphite idler bushing see “Installation of Carbon
graphite Bushings” page 12.
6. Put the .010” to .015” thick head gasket on the head and
install the head and idler assembly on the pump. The
jacket head plate and gasket must be installed at this
time (if your pump is equipped with this feature). Tighten
the head capscrews.
7. Slide the inner bearing spacer collar over the shaft with
recessed end toward the rotor. Q, QS and M bearing
spacer collar is not recessed.
Place the pair of half round rings (not used on Q, QS
and M) in the shaft and slide the inner spacer collar over
them. See Figure 4.
8. Press the lip seal (lip toward end of shaft) into the inner
end cap and insert the end cap through the shaft end of
the bracket. With two fingers turn it clockwise (looking at
end of shaft) until it engages the threads. The bosses on
the end cap must be toward the rotor. Turn the end cap
until it projects slightly into the opening on the side of the
bracket.
NOTE: The end cap must be turned so far that the lip of
the seal drops off the end of the spacer collar on the shaft
or the end cap becomes disengaged with the threads.
See Figure 4.
9. Pack the ball bearing with multi-purpose grease, place
on the shaft and push or drive into place in the bracket.
10. Install the lip seal (lip toward end of shaft) and bearing
spacer in the outer end cap and turn the end cap into the
bracket until tight against the bearing. See Figure 4.
11. 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 120-
150 ft.– lbs. Torque (LS) or 170-190 ft. – lbs. Torque (Q,
QS, M). 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 rest of pump. Remove length of hardwood or
brass from port opening.
12. Adjust the pump end clearance as in “Thrust Bearing
adjustment”, page 12.
1. Install the bracket bushing. (If carbon graphite see
“Installation of Carbon graphite Bushings” page 12).
2. Assemble the rotor and shaft in the bracket. Start the
end of the shaft in the bracket bushing and turn from
right to left, slowly, pushing the rotor into the casing.
3. Place the packing retainer washer in the bottom of the
packing chamber and pack the pump. It is good practice
to install a set of new packing. The pump should be
packed with a packing suitable for the liquid being
pumped. Install and seat each ring of packing one at a
time, staggering the ring joints from one side of the shaft
to the other. Lubricate the packing rings with oil, grease
or graphite to aid assembly. A length of pipe or tubing
will help to install and seat each packing ring.
4. Install the packing gland, capscrews and nuts. Back
the rotor and shaft out of the casing just far enough to
insert the packing gland through the side opening of
the bracket and over the end of the shaft. This gland
cannot be installed with the rotor and shaft in place.
NOTE: Make sure the gland is installed square and nuts
tightened evenly. Tighten nuts wrench tight and then
back off until gland is slightly loose.
DaNgER !
Before starting pump, be sure all drive
equipment guards are in place.
Failure to properly mount guards may
result in serious injury or death.
aSSEMBlY