Viking Pump TSM151.2: LS-M 123/4123 - Manual (Page 6)

SECTION TSM 151.2 ISSUE B PAGE 6 OF 14
6. Using a 0.15-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 and equal distance between port
connections to allow for proper flow of liquid through
pump.
If pump is equipped with jacketed head plate, install at
this time along with new gasket.
Tighten head capscrews evenly.
If pump was equipped with a relief valve and it was
removed during disassembly, install on head with new
gaskets. Relief valve adjusting screw cap must always
point toward suction port. Refer to Figures 1 and 2 on
page 1. For relief valve repair or adjustments, refer to
PRESSURE RELIEF VALVE INSTRUCTIONS, page
13.
7. Slide inner spacer collar over shaft with recessed end
facing rotor. Q, QS and M 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 Q, QS
and M size pumps. Refer to Figure 4, page 5.
8. Press lip seal, lip facing end of shaft, in inner end cap
and insert end cap through shaft end of bracket. Turn
end cap clockwise, looking at shaft end, until it engages
threads. End cap spanner wrench holes must be facing
Rotor. Turn end cap with spanner wrench until it
projects slightly from opening on side of bracket. End
cap must not be turned so far that lip seal drops off end
of spacer collar on shaft or end cap becomes
disengaged from threads. Refer to Figure 4, page 5.
9. Pack ball bearing with multi-purpose grease, NLGI #2.
Place on shaft and push or gently drive in place in
bracket.
10. Press lip seal, lip facing end of shaft, in outer end cap
and insert end cap in bracket. Turn end cap in bracket
until it is tight against bearing. Refer to Figure 4, page
5.
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 170-
190 ft – lbs. Torque. 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 pump end clearance. Refer to THRUST
BEARING ADJUSTMENT, page 12.
13. Lubricate all grease fittings with multi-purpose grease,
NLGI #2.
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.