Viking Pump TSM151.2: LS-M 123/4123 - Manual (Page 4)

DANGER
BEFORE OPENING ANY VIKING PUMP
LIQUID CHAMBER (PUMPING CHAMBER,
RESERVOIR, RELIEF VALVE ADJUSTING
CAP FITTING, ETC.) BE SURE:
1. THAT ANY PRESSURE IN CHAMBER
HAS BEEN COMPLETELY VENTED
THROUGH 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 THE ABOVE LISTED
PRECAUTIONARY MEASURES MAY
RESULT IN SERIOUS INJURY OR DEATH.
EXPLODED VIEW Q, QS AND M123
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 * 32 Capscrew for Relief Valve
9 Packing Gland Nut 21 Pipe Flange Gasket 33 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 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 13.
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 0.50 inch and remove
pair of half round rings under inner bearing spacer
collar. Q, QS and M size do not use half round rings.
SECTION TSM 151.2 ISSUE B PAGE 4 OF 14