Disassembly, Danger – Viking Pump TSM161.3: LS-M 127/4127 User Manual

Page 4

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SECTION TSM 161.3

ISSUE

D

PAGE 4 OF 12

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 proper flow of

liquid through pump.
Remove head from pump.

Do not allow idler to fall from

idler pin. Tilt top of head back when removing to prevent

this. Avoid damaging head gasket. If pump is furnished

with pressure relief valve, it need not be removed from

head or disassembled at this point.

Refer to Pressure

Relief Valve Instructions, page 10.
If LS pump has jacketed head plate, it will separate from

head when it is removed. The gasket between head and

jacket head plate must be totally removed. Use new

gasket when assembling pump. Q, QS and M pumps

have jacketed plate welded to head.

2. Remove idler and bushing assembly.
3. Insert length of hardwood or brass through port opening

between rotor 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. Remove packing gland nuts.
5. Tap shaft forward approximately 0.5 inch and remove

pair of half round rings under inner bearing spacer collar.

Q, QS and M size to not use half round rings.

6. Carefully remove rotor and shaft to avoid damaging

bracket bushing.

7.

Remove packing gland from side of bracket.

DISASSEMBLY

DANgER !

Before opening any Viking pump liquid

chamber (pumping chamber, reservoir,

relief valve adjusting cap fitting, etc.)

Be sure:
1. That any pressure in the chamber has

been completely vented through the

suction or discharge lines or other

appropriate openings or connections.

2. That the driving means (motor,

turbine, engine, etc.) has been “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 above listed

precautionary measures may result in

serious injury or death.

EXPLODED VIEW fOR MODELS Q, QS AND M127

ITEM

NAME Of PART

ITEM

NAME Of PART

ITEM

NAME Of PART

1

Locknut

13

Bracket Bushing

25

Idler Bushing

2

Lockwasher

14

Bracket and Bushing

26

Head Gasket

3

End Cap (Outer)

15

Grease Fitting

27

Idler Pin

4

Lip Seal for End Cap

16

Capscrew for Bracket

28

Head and Idler Pin

5

Bearing Spacer Collar

17

Bracket Gasket

29

Stud for Head

6

Ball Bearing

18

Nut for Flanges

30

Nut for Head

7

End Cap (Inner)

19

Stud for Flanges

31

Relief Valve Gasket

8

Packing Gland

20

Casing (QS size has opposite ports)

32

Capscrew for Relief Valve

9

Packing Gland Nut

21

Pipe Flange Gasket

33

Internal Relief Valve

10

Packing Gland Capscrew

22

Pipe Plug

34

Cover Plate, Relief Valve

11

Packing

23

Rotor and Shaft

12

Packing Retainer Washer

24

Idler and Bushing

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