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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.

 

Содержание Series 123

Страница 1: ...ounted pump or pump unit model number and serial number are on the nameplate In the Viking model number system basic size letters are combined with series number 123 and 4123 indicating both unmounted or mounted pump unit UNMOUNTED PUMP UNITS PACKED LS123 Q123 QS123 M123 MECH SEAL LS4123 Q4123 QS4123 M4123 Units are designated by the un mounted pump model numbers followed by a letter s indicating ...

Страница 2: ...ad and follow all special information supplied with pump MAINTENANCE Series 123 and 4123 pumps are designed for long trouble free service life under a wide variety of application conditions with a minimum of maintenance The points listed below will help provide long service life LUBRICATION External lubrication must be applied slowly with a handgun to all lubrication fittings every 500 hours of op...

Страница 3: ...ing Spacer Collar Inner 20 Casing 33 Capscrew for Head 8 Ring Half Round 21 Nut for Flanges 34 Relief Valve Gasket 9 End Cap Inner 22 Capscrew for Flanges 35 Capscrew for Relief Valve 10 Packing Gland 23 Pipe Flange Gasket 36 Internal Relief Valve 11 Packing Gland Nut 24 Pipe Plug 37 Cover Plate Relief Valve 12 Packing Gland Capscrew 25 Rotor and Shaft 38 13 Packing 26 Idler and Bushing 39 EXPLODE...

Страница 4: ... Internal Relief Valve 10 Packing Gland Capscrew 22 Pipe Plug Suckback Line Not illus 11 Packing 23 Rotor and Shaft 12 Packing Retainer Washer 24 Idler and Bushing QS Casing has Opposite ports DISASSEMBLY 1 Mark head and casing before disassembly to insure proper reassembly The idler pin which is offset in pump head must be positioned toward and equal distance between port connections to allow for...

Страница 5: ...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 liqui...

Страница 6: ... 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...

Страница 7: ... Internal Relief Valve 13 Seal Holder 26 Pipe Plug 39 Cover Plate Relief Valve EXPLODED VIEW MODEL LS4123 ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART 1 Locknut 13 Set Collar 25 Rotor and Shaft 2 Lockwasher 14 Pipe Plug 26 Idler and Bushing 3 End Cap Outer 15 Grease Fitting 27 Idler Bushing 4 Lip Seal for End Cap 16 Bracket and Bushing 28 Head Gasket 5 Bearing Spacer Collar 17 Capscrew fo...

Страница 8: ...teeth to keep shaft from turning Bend up tang of lockwasher and with a spanner wrench remove locknut and lockwasher from shaft Remove length of hardwood or brass from port opening 4 Standard Mechanical Seal synthetic rubber bellows type uses a set collar behind the seal spring Two setscrews must be loosened before shaft can be removed Access to collar setscrews is through seal access hole on right...

Страница 9: ...n 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 gently If pump is equipped with a relief valve and it was removed during disassembly install on head with new gaskets Relief valve adjusting scre...

Страница 10: ...9 9 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 of bracket 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 space...

Страница 11: ...articles can scratch the seal faces and cause leakage Coat tapered sleeve and inside of the rotary member with a generous quantity of SAE 30 non detergent oil Grease is not recommended Start rotary member on shaft and over tapered sleeve Move rotary member so setscrews are directly below seal access holes on left side of bracket viewed from shaft end Refer to Figure 9 Tighten all setscrews securel...

Страница 12: ... 0 01 FIGURE 12 INSTALLATION OF CARBON GRAPHITE BUSHINGS When installing carbon graphite bushings extreme care must be taken to prevent breaking Carbon graphite is a brittle material and easily cracked If cracked the bushing will quickly disintegrate Using a lubricant and adding a chamfer on the bushing and the mating part will help in installation The additional precautions listed below must be f...

Страница 13: ...N LOCKED OUT OR MADE NON OPERATIONAL SO THAT IT CANNOT BE STARTED WHILE WORK IS BEING DONE ON PUMP 3 THAT YOU KNOW WHAT LIQUID THE PUMP HAS BEEN HANDLING AND THE PRECAUTIONS NECESSARY TO SAFELY HANDLE THE LIQUID OBTAIN A MATERIAL SAFETY DATA SHEET MSDS FOR THE LIQUID TO BE SURE THESE PRECAUTIONS ARE UNDERSTOOD FAILURE TO FOLLOW THE ABOVE LISTED PRECAUTIONARY MEASURES MAY RESULT IN SERIOUS INJURY O...

Страница 14: ...e and if such products are returned to Viking s factory at Cedar Falls Iowa transportation charges prepaid and if the products are found by Viking to be defective in workmanship or material they will be replaced or repaired free of charge FOB Cedar Falls Iowa Viking assumes no liability for consequential damages of any kind and the purchaser by acceptance of delivery assumes all liability for the ...

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