Special information maintenance – Viking Pump TSM161.3: LS-M 127/4127 User Manual

Page 2

Advertising
background image

SECTION TSM 161.3

ISSUE

D

PAGE 2 OF 12

SPECIAL INfORMATION

MAINTENANCE

ROTATION: Viking pumps operate equally well in a clock-

wise or counterclockwise rotation. Shaft rotation determines

which port is suction and which is discharge. Port in area

where pumping elements (gear teeth) come out of mesh is

suction port.

PRESSURE RELIEF VALVES:

1. Viking pumps are positive displacement pumps and

must be provided with some sort of pressure protection.

This may be a relief valve mounted directly on the pump,

an inline pressure relief valve, a torque limiting device or

a rupture disk.

2. There are relief valve options available on those pump

models designed to accept a relief valve. Options may

include a return to tank relief valve and a jacketed relief

valve. Pumps equipped with a jacketed head plate are

generally not available with a relief valve.

3. If pump rotation is reversed during operation, pressure

protection must be provided on

both sides of pump.

4. Relief valve adjusting screw cap must always point

towards suction side of pump. If pump rotation is

reversed, remove pressure relief valve and turn end for

end.

Refer to figures 1 and 2.

5. Pressure relief valves cannot be used to control pump

flow or regulate discharge pressure.

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.

For additional information on pressure relief valves,

Refer

to Technical Service Manual TSM000 and Engineering

Service Bulletin ESB-31.
SPECIAL MECHANICAL SEALS
Extra care must be taken in repair of pumps with mechanical

seals. Read and follow all special information supplied with

pump.

Series 127 and 4127 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 hand gun to all lubrication fittings every 500 hours of

operation with multi-purpose grease, NLGI #2. Do not over-

grease. Applications involving very high or low temperatures

will require other types of lubrication.

Refer to Engineering

Service Bulletin ESB-515. Consult factory with specific

lubrication questions.
PACKING ADJUSTMENT: New packed pumps require initial

packing adjustment to control leakage as packing “runs in”.

Make initial adjustments carefully and do not over-tighten

packing gland. After initial adjustment, inspection will reveal

need for packing gland adjustment or packing replacement.

Refer to instructions under Disassembly, page 4, and

Assembly, page 5, regarding repacking pump.
CLEANING PUMP: Keep pump as clean as possible. This

will facilitate inspection, adjustment and repair work and help

prevent overlooking a dirt covered grease fitting.
STORAGE: If pump is to be stored, or not used for six months

or more, pump must be drained and a light coat of non-

detergent SAE 30 weight oil must be applied to all internal

pump parts. Lubricate fittings and apply grease to pump shaft

extension. Viking suggests rotating pump shaft by hand one

complete revolution every 30 days to circulate the oil.
SUGGESTED REPAIR TOOLS: The following tools must

be available to properly repair Series 127 and 4127 pumps.

These tools are in addition to standard mechanics’ tools such

as open end wrenches, pliers, screw drivers, etc. Most of the

items can be obtained from an industrial supply house.
1. Soft Headed hammer
2. AlIen wrenches (some mechanical seals and set collars)
3. Packing hooks, flexible (packed pumps)

Large for 0.375 inch and up cross section packing

4. Mechanical seal installation sleeve

Viking Part No. 2-751-005-630 for 2.4375 inch seal;

Q-M4127
5. Bearing locknut spanner wrench

(Source: #472 J. H. Williams & Co. or equal)

6. Spanner wrench, adjustable pin type for use on double

end caps (Source: #482 J. H. Williams & Co. or equal)

7. Brass bar
8. Arbor press

Advertising