Viking Pump TSM710.1: HLE-ALE 4076/4176 - Manual (Page 3)

SECTION TSM 710.1 ISSUE C PAGE 3 OF 8
MAiNTeNANCe
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 the 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.
SPeCiAL iNfOrMATiON
ROTATION:
See
figure 3. Viking 4076/4176 pumps are directional due to
the loading groove in the head. Standard rotation is clockwise
as viewed from the shaft end.
If rotation is to be reversed, the following items need to be
changed:
1. The head and pin assembly must be replaced.
2. Position of the relief valve will have to be changed. Install
so the adjusting screw cap points towards the suction
side of the pump.
3. The flush line must be switched to the opposite port.
PRESSURE RELIEF VALVES:
Viking pumps are positive displacement pumps and must be
provided with some form of pressure protection. This may
be a relief valve mounted directly on the pump, an in-line
pressure relief valve, a torque limiting device or a rupture
disk.
Pumps equipped with relief valves have them mounted on
the casing.
If pump rotation is reversed during operation, pressure
protection must be provided on both the sides of the pump.
The relief valve adjusting screw cap must always point
towards the pump suction port.
Pressure relief valves are intended for use as a protection for
the pump only and should not be used to control pump flow
or regulate discharge pressure.
Viking 4076/4176 pumps are designed for long, trouble-free
service life under a variety of application conditions with a
minimum of maintenance. The following points will help
provide long service life.
LUBRICATION:
External lubrication must be applied slowly with a hand gun to
the lubrication fitting 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.
Note that the bushings used in this pump do not require any
external lubrication.
CLEANING THE 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, 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 the 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
Viking series 4076/4176 pumps. These tools are in addition
to standard mechanics’ tools such as open end wrenches,
pliers and screw drivers. Most items can be obtained from an
industrial supply house.
1. Soft headed hammer
2. Allen wrenches
3. Bearing locknut spanner wrench
4. Spanner wrench, adjustable pin type for use on bearing
housing end cap
5. Brass bar or wood block
6. Arbor press
figure 3
(Counter Clockwise Rotation Shown)
LOADiNg grOOve