Viking Pump TSM151.2: LS-M 123/4123 - Manual (Page 5)

6. Carefully remove rotor and shaft to avoid damaging
bracket bushing.
7. Remove packing gland from side of bracket.
8. Loosen four setscrews over the inner and outer end
caps. Remove both end caps with lipseals, spacer
collars and ball bearing. Refer to Figure 4.
The inner cap can be removed through the side opening
of the bracket.
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 12.
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
carbon graphite bushing, refer to INSTALLATION OF
CARBON GRAPHITE BUSHINGS, page 12.
SECTION TSM 151.2 ISSUE B PAGE 5 OF 14
FIGURE 4
BALL BEARING
INNER LIP
SEAL
SHAFT
BRACKET
OUTER SPACER
COLLAR
OUTER LIP SEAL
INNER SPACER
COLLAR
HALF ROUND
RINGS
INNER END CAP
NYLON INSERT
GREASE FITTING LOCATION
OUTER END CAP
SETSCREWS
LOCKWASHER
LOCKNUT