Viking Pump TSM142.1: H-LL 225/4225 - Manual (Page 10)

SECTION TSM 142.1 ISSUE F PAGE 10 OF 13
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.
7. Remove tapered sleeve from shaft.
8. 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. Tighten all
drive setscrews securely to shaft.
9. Coat rotor shaft with non-detergent SAE 30 weight oil.
Start end of shaft in bracket bushing and turn from right
to left, slowly pushing until the ends of the rotor teeth are
just below the face of the casing.
Leave the rotor in this position. Withdrawal of rotor and
shaft may displace the carbon seal rotating face and
result in damage to the seal.
10. 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 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, 2 and 3
on page 1. For relief valve repair or adjustments, refer to
Pressure Relief Valve Instructions, page 11.
11. 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
H and HL size pumps. Refer to figure 5, page 4.
12. 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 oft end of spacer
collar on shaft or end cap becomes disengaged from
threads. Refer to figure 5, page 4. If this happens,
remove inner spacer collar, half round rings and end cap
and start over at Step 11.
13. Pack ball bearing with multi-purpose grease, NLGI
#2. Place on shaft and push or gently drive in place in
bracket.
14. 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 5, page 4.
15. 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 100
ft.-lbs. torque. This is equal to a 100 lb. load applied at
a 1’ distance from locknut. 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.
16. Adjust pump end clearance. Refer to Thrust Bearing
Adjustment, page 11.
17. Lubricate the grease fitting over the seal chamber with
petroleum jelly, petrolatum (Vasoline) or other similar low
melting point lubricant. Lubricate all other grease fittings
with multi-purpose grease, NLGI #2.