Viking Pump TSM164: GG-AL 4197 - Manual (Page 3)

SECTION TSM 164 ISSUE F PAGE 3 OF 10
MAINTENANCE
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 these pumps.
Relief valve options include an internal relief valve and a
return to tank relief valve.
3. If pump rotation is reversed during operation, pressure
protection must be provided on both sides of the pump.
4. The relief valve adjusting screw cap must always point
towards the suction side of the pump. If pump rotation is
reversed, remove the pressure relief valve and turn end
for end. Refer to figure 3 below.
5. Pressure relief valves should not be used to control flow
or regulate discharge pressure.
For additional information on pressure relief valves, refer
to Technical Service Manual TSM 000 and Engineering
Service Bulletin ESB-31.
Series 4197 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.
CLEANING PUMP: Keep the pump as clean as possible.
This will facilitate inspection, adjustment and repair work
and help prevent overlooking a dirt covered grease fitting.
STORAGE: If the pump is to be stored, or not used for six
months or more, the pump must be drained and a light coat
of non-detergent SAE 30 weight oil must be applied to all
internal pump parts. Lubricate the fittings and apply grease
to the pump shaft extension. Viking suggests rotating pump
shaft by hand one complete revolution every 30 days to
circulate the oil.
SPECIAL MECHANICAL SEALS:
Extra care should be taken in repair of these pumps. Be
sure to read and follow all special instructions supplied with
your pump.
ROTATION: Viking pumps operate equally well in a clockwise
or counterclockwise rotation. Shaft rotation determines which
port is suction and which is discharge. Suction port is where
pumping elements (gear teeth) come out of mesh.
fIgURE 3
RELIEf VALVE ADJUSTINg SCREW CAP
SUCTION
DISCHARgE
SUGGESTED REPAIR TOOLS: The following tools must be
available to properly repair Series 4197 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. Allen wrenches (set screws & special mechanical seals)
3. Snap Ring Pliers
INTERNAL – Viking P/N 2-810-047-999 GG-HJ-HL 4197
EXTERNAL – Viking P/N 2-810-029-375 GG-HJ-HL 4197
4. Mechanical Seal Installation Sleeve
2-751-001-730 for 0.75 inch seal; GG 4197
2-810-004-730 for 1.25 inch seal; AS-AL 4197
5. Bearing Locknut Spanner Wrench – 2-810-043-375
6. Spanner Wrench, adjustable pin type for use on bearing
housing end cap – 2-810-008-375
7. Brass bar
8. Arbor press
DISASSEMBLY
1. Refer to figures 7 & 8, page 6, for model to be
disassembled and name of parts.
2. Mark the head and casing before disassembly to ensure
proper reassembly.
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.