Viking Pump TSM161.3: LS-M 127/4127 - Manual (Page 7)

SECTION TSM 161.3 ISSUE D PAGE 7 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. Standard Mechanical Seal (PTFE fitted type) is setscrew
driven. Setscrews in rotary member must be loosened
before shaft can be removed. Access to collar setscrews
is through seal access hole on left hand side of mounting
bracket (viewed from shaft end, Refer to figure 5.)
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 Pipe Plug 25 Idler and Bushing
2 Lockwasher 14 Grease Fitting 26 Idler Bushing
3 End Cap (Outer) 15 Bracket and Bushing 27 Head Gasket
4 Lip Seal for End Cap 16 Capscrew for Bracket 28 Idler Pin
5 Bearing Spacer Collar 17 Bracket Bushing 29 Head and Idler Pin
6 Ball Bearing 18 Bracket Gasket 30 Stud for Head
7 End Cap (Inner) 19 Stud for Flanges 31 Nut for Head
8 Nut for Seal Holder 20 Nut for Flanges 32 Relief Valve Gasket
9 Capscrew for Seal Holder 21 Casing (QS size has opposite ports) 33 Capscrew for Relief Valve
10 Seal Holder Plate 22 Pipe Flange Gasket 34 Internal Relief Valve
11 Seal Holder 23 Pipe Plug Cover Plate, Relief Valve
12 Mechanical Seal 24 Rotor and Shaft