Viking Pump TSM142.1: H-LL 225/4225 - Manual (Page 6)

SECTION TSM 142.1 ISSUE F PAGE 6 OF 13
5. Tap shaft forward approximately 0.5 inch and remove
pair of half round rings under inner bearing spacer collar.
There is no pair of half round rings on H and HL size
pumps.
6. Carefully remove rotor and shaft to avoid damaging
bracket bushing.
7. Remove packing gland from side of bracket.
8. Loosen setscrews. Two on H and HL size pumps, four
on all other sizes. With a spanner wrench, remove both
end caps with lip seals. Remove ball bearing. Refer to
figure 5.
9. Remove packing and packing retainer washer.
10.
Clean all parts thoroughly and examine for wear and
damage. Check lip seals, ball bearing, 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 or damage while
mounted on bracket.
ASSEMBLY
1. Install bracket bushing. If bracket bushing has a
lubrication groove, install bushing with groove at 6:00
o’clock position in bracket. If carbon graphite, Refer to
Installation of Carbon graphite Bushings, page 11.
2. Coat shaft of rotor shaft assembly with non-detergent
SAE 30 weight oil. Start end of shaft in bracket bushing
turning from right to left, slowly pushing rotor in casing.
3. Place packing retainer washer in bottom of packing
chamber and pack pump with new packing. Use packing
suitable for liquid being pumped. Install packing,
staggering the joints from one side of shaft to other.
Lubricate packing rings with oil, grease or graphite to aid
assembly. A length of pipe will help to seat each packing
ring.
4. Install packing gland, capscrews and nuts. Back rotor
and shaft out of casing just far enough to insert packing
gland through side opening of bracket over end of
shaft. Make sure gland is installed square and nuts are
tightened evenly. Tighten nuts wrench tight then back off
until gland is slightly loose .
5. Coat idler pin with non-detergent SAE 30 weight 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 13.
6. 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.
7. 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.
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 5, page 4.
If this happens, remove inner spacer collar, half round
rings and end cap and start over at Step 7.
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 5, page 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 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 rest of pump.
Remove length of hardwood or brass from port opening.
12. Adjust pump end clearance. Refer to Thrust Bearing
Adjustment, page 11.
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.