Viking Pump TSM153: N-R 333/4333 - Manual (Page 5)

SECTION TSM 153 ISSUE D PAGE 5 OF 16
JACKSCREWS
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.
DETAILS FOR SECTIONAL VIEW - MODELS N AND R333
ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART
1 Locknut 14 Bushing, Rotor Bearing Sleeve 27 Bearing Housing Stand
2 Lockwasher 15 Casing 28 Packing Gland Stud
3 Bearing Spacer Collar 16 Rotor and Shaft 29 Packing Gland Nut
4 Capscrew for End Cap Lock 17 Idler and Bushing 30 Bearing Housing Stud
5 End Cap Lock 18 Idler Bushing 31 Bearing Housing Nut
6 Lip Seal 19 Idler Pin 32 Bearing Housing Capscrew
7 End Cap 20 Head and Idler Pin 33 Stud for Rotor Bearing Sleeve
8 Roller Bearing 21 Nut for Head 34 Nut for Rotor Bearing Sleeve
9 Grease Fitting 22 Stud for Head 35 Rotor Bearing Sleeve Gasket
10 Thrust Bearing Housing 23 Capscrew for Valve 36 Pipe Plug
11 Packing Gland 24 Idler Pin Nut (Not N) 37 Head Gasket
12 Rotor Bearing Sleeve & Bushing 25 Internal Relief Valve 38 Relief Valve Gasket
13 Packing 26 Pipe Plug * Suckback Line (Not Illustrated)
1. Mark head and casing before disassembly to ensure
proper reassembly. The idler pin, which is offset in pump
head, must be positioned towards and equal distance
between port connections to allow for proper flow of
liquid through pump.
It is not necessary to remove relief valve to take head
off pump; however, removing relief valve will lessen total
weight of part. Do not use chain or cable around relief
value body to support the head during removal. For
Pressure Relief Instructions, refer to page 14.
Remove nuts from head. Jackscrews should be used to
back head away from casing. Refer to figure 5. Proper
size and length of jackscrews for pump size are shown in
figure 6. The use of a hoist to support head will facilitate
its removal.
Back head away from casing. Remove head from pump.
Do not allow idler to fall from idler pin. To prevent this,
tilt top of head back when removing. A lifting hook will
provide adequate connection for hoisting head. If a hoist
is not available, cribbing or blocking can be used to
support head. This will eliminate having to lift head into
position when reassembling pump.
FIgURE 5