6
If the pump is inoperative for a long period of time, or appears
not to use any grease, remove and clean the cup thoroughly.
Caked grease in the cup can create a problem of
non-lubrication to the seal.
Under normal conditions, a grease cup full of grease will last
three to four months. If a grease seal requires grease every
day, and it is not leaking past the outer lip seal it indicates that
the seal is wearing out. The internal pressure of the pump will
often force the cup plunger out when the seal leaks badly.
Grease Type*
Grease Color
Sohio Factran EP-3
Brown
Gulf Crown EP-3
Brown
Vulcan Lubriplate 630-A
Off-White
* Lithium Soap Base NGLI #3 grease
CAUTION! - DO NOT Operate Pump Without Liquid
In Pump Body As Operating Dry Will Result In
Damage To The Seal.
SECTION D: OPERATION:
D-1) Priming:
Remove the priming plug in the top of the discharge tee or in
top of pump body, and fill the pump body completely with liquid
as free of solids as possible. In freezing weather, the pump
should be primed with warm water, if possible, to prevent any
damage that may be caused by ice films within the pump.
D-2) Starting:
After completion of procedures outlined in Section C and D-1,
the pump is then ready for operation. Start pump by applying
power to motor or by starting engine as outlined in the ENGINE
or MOTOR INSTRUCTION MANUAL.
D-3) Shutdown:
Operation may be discontinued by stopping the engine as
outlined in the ENGINE MANUAL or by disconnecting electric
power if motor driven.
When the pump has been operating in freezing weather
or in liquid containing a considerable amount of solids, it is
advisable to drain the pump body by removing drain plug (26)
and flushing the solids out of the body. Replace the drain plug.
D-4) Restart:
At each subsequent start, particularly if the pump has been
drained, the priming liquid level should be checked since the
pump is self-priming only when the body is full of liquid.
SECTION E: PUMP SERVICE AND REPAIR:
E-1) Check Valve Service:
To clean out or repair check valve, disconnect suction piping.
Remove hex nuts (30) and suction flange (23).
DO NOT PRY
ON FLANGE
but rather bump off with a block of wood and
a hammer. Pull off gasket (22B) together with weights (22A)
and (22E), round head screw (22D) and lock washer (22C).
Examine and replace any parts showing wear or damage.
When replacing gasket and weight assembly onto pump body
make sure that HINGE section of gasket (22B) is at TOP and
that LARGE weight is on PUMP SIDE of gasket.
E-2) Body, Volute and Impeller Service:
To clean out or repair the body (18), volute (15) or impeller
(12), disconnect suction and discharge piping. Remove hex
nuts (21) and lock washers (20) and pull body (18) from
pedestal (2). This will expose O-ring (4), volute (15) and volute
gasket (17). To expose impeller (12), pull volute (15) from
intermediate coupling (38). Examine and replace any part
showing wear or damage.
When impeller (12) needs replaced, remove cap screw (13)
and washers (14) and unscrew the impeller from the shaft
(1). The impeller is screwed onto the shaft with right hand
thread and to break loose use a block of wood against a vane
and strike with a hammer. At reassembly, be sure to use the
required number of shims (10) and (11) to result in an impeller-
to-volute clearance of .010” to .020”.
E-3) Shaft Seal Service:
To examine or replace shaft seal, remove body (18) and
impeller (12) as outlined in Paragraph E-2. Remove impeller
shims (10) and (11). Remove spring, retainer cup and rotating
member of shaft seal (9) from shaft (1).
All of the components of the shaft seal are now exposed for
examination. If any part shows wear or damage, replace entire
shaft seal assembly.
When stationary member needs replacing, remove cap screws
(31) and lockwashers (37) and pull intermediate coupling (38)
from bearing pedestal (2). Press used stationary member from
intermediate coupling.
CAUTION! - Handle Seal Parts With Extreme Care.
DO NOT Scratch Or Mar Lapped Faces.
Replace intermediate coupling (38) onto bearing pedestal (2).
Lightly oil shaft (1) and inner surface of stationary member and
press over shaft and into intermediate coupling (38). Lightly oil
inner surface of rotating member, with lapped surface facing
pedestal, slide rotating member onto shaft until lapped faces
of the stationary and rotating members are together. Lightly oil
inner surface of retainer cup and slide over shaft sleeve until it
touches rotating member. Replace spring, shims (10) and (11)
and impeller (12), making sure that spring is properly seated
against impeller. Reassemble remainder of pump.
FIGURE 1
