Viking Pump TSM141.1: G-LL 125/4125 - Manual (Page 6)

SECTION TSM 141.1 ISSUE E PAGE 6 OF 16
3. Place the packing retainer washer in the bottom of the
packing chamber. Use packing suitable for the liquid being
pumped. Lubricate the packing rings with oil, grease or
graphite to aid assembly. A length of pipe will help to seat
each packing ring. (Install packing, staggering the joints
from one side of shaft to other.)
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 over the end of the shaft. Make sure the gland
is installed square and the nuts are tightened evenly.
Tighten the nuts wrench tight then back off until the gland
is slightly loose .
5. Coat the idler pin with non-detergent SAE 30 weight oil and
place the idler and bushing on the idler pin in the head.
6. Using a .010 to .015 inch head gasket, install the head
and idler assembly on the pump. Pump head and casing
were marked before disassembly to ensure proper
reassembly. If not, be sure the idler pin, which is offset in
the pump head, is positioned toward and equal distance
between the port connections to allow for proper flow of
liquid through the pump.
If the pump is equipped with a jacketed head plate, install
at this time along with a new gasket.
Tighten the head capscrews evenly.
7. Slide the inner spacer collar over the shaft with the
recessed end facing the rotor. G, H and HL size bearing
spacer collars are not recessed.
Place pair of half round rings on the shaft and slide the
inner bearing spacer collar over the half round rings to
lock them in place. There is no pair of half round rings on
G, H and HL size pumps. Refer to Figure 6, page 5.
8. Press the lip seal, the lip facing the end of the shaft, in
the inner end cap and insert the end cap through the
shaft end of the bracket. Turn the end cap clockwise,
looking at the shaft end, until it engages the threads. The
end cap spanner wrench holes must be facing the rotor.
Turn the end cap with a spanner wrench until it projects
slightly from the opening on the side of the bracket. The
end cap must not be turned so far that the lip seal drops
off the end of the spacer collar on the shaft or end cap
becomes disengaged from the threads. Refer to Figure
6, page 5.
If this happens, remove the inner spacer collar, half
round rings and end cap and start over at Step 7.
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.
9. Pack the ball bearing with multi-purpose grease, NLGI
#2. Place on the shaft and push or gently drive in place
in the bracket.
10. Press the lip seal, the lip facing the end of the shaft, in
the outer end cap and insert the end cap in the bracket.
Turn the end cap in the bracket until it is tight against the
bearing. Refer to Figure 6, page 5.
11. Put the lockwasher and locknut on the shaft. Insert a
length of hardwood or brass through the port opening
between the rotor teeth to keep the shaft from turning.
Tighten the locknut and bend one tang of the lockwasher
into the slot of the locknut. There is no lockwasher on G
size pumps.
12. Adjust pump end clearance. Refer to Thrust Bearing
Adjustment, page 13.
13. Lubricate all grease fittings with multi-purpose
grease, NLGI #2.