CRANE PUMPS & SYSTEMS Crown POLA Series User manual

A Crane Co. Company
INSTALLATION and OPERATION MANUAL
Self-Priming Centrifugal Pumps
IMPORTANT! Read all instructions in this manual before operating pump.
As a result of Crane Pumps & Systems, Inc., constant product improvement program,
product changes may occur. As such Crane Pumps & Systems reserves the right to
change product without prior written notification.
420 Third Street 83 West Drive, Bramton
Piqua, Ohio 45356 Ontario, Canada L6T 2J6
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]
www.cranepumps.com Form No. 094862-Rev. X
Series: POLA
POLB
POLC
2” thru 6”

2
TABLE OF CONTENTS
SAFETY FIRST ............................................................................................... 3
A. GENERAL INFORMATION
(Receiving, Storage, Service Centers) .............................................................4
B. INSTALLATION RECOMMENDATIONS
(Clearances, Pump Suction, Base Mounted Units) .........................................4
(Pump Discharge) (Fig 1 & 2) ..........................................................................5
(Infl uent Pipe, Level Controls) ..........................................................................6
C. PUMPS PARTS & FUNCTIONAL INFORMATION (Fig. 3) ..............................6 - 7
D. OPERATION RECOMMENDATIONS ..............................................................7
E. PREVENTATIVE MAINTENANCE ...................................................................8
F. LUBRICATION MAINTENANCE
(Single Mechanical Seal) (Fig. 4) .....................................................................8
(Double Mechanical Seal) (Fig. 5)....................................................................8 - 9
(Bearing-Oil); Bullseye, Opto-Matic) (Fig. 6, 7 & 8) ..........................................9
G. SHAFT SEAL REPLACEMENT
(Replacement through Hatch Cover) ...............................................................9 - 10
(Replacement By Removing Pedestal) ............................................................10
(Single Seal Installation) (Fig. 9 & 10)..............................................................10 - 11
(Double Seal Installation) (Fig. 11 & 12) ..........................................................11 - 12
(Seal Installation Tool) (Fig. 13 & 14) ...............................................................12
H. BELLEVILLE WASHER INSTALLATION (Fig. 15 & 16) ...................................12 - 13
I. OPTIONAL EQUIPMENT
(Pump Case Heater) (Fig. 17) ..........................................................................13
(Temperature Control) (Fig. 18) ........................................................................13
J. TROUBLE SHOOTING ....................................................................................14 - 15
K. REPLACEMENT PARTS ..................................................................................15
PO2LA CROSS-SECTION & PARTS LIST ......................................................16 - 18
PO3LA & PO3LB CROSS-SECTION & PARTS LIST ......................................19 - 21
PO3LC, PO4LA & PO4LB CROSS-SECTION & PARTS LIST ........................22 - 24
PO4LC CROSS-SECTION & PARTS LIST ......................................................25 - 27
PO6LB & PO6LC CROSS-SECTION & PARTS LIST ......................................28 - 30
RETURNED GOODS POLICY .........................................................................31
WARRANTY ...................................................................................................32
START-UP REPORT for Electric Motor Drive ..................................................33 -34
WARRANTY REGISTRATION
Other brand and product names are trademarks or registered trademarks of their respective holders.
® CROWN is a registered trademark of Crane Pumps & Systems, Inc
® Tefl on is a registered trademark of E.I. Dupont de Nemours and Company
® Crane-Carb is a registered trademark of John Crane International
1994, 2002, 3/04, 8/05, 2/06, 8/06, 9/06, 3/07 Alteration Rights Reserved

3
Please Read This Before Installing Or Operating Pump.
This information is provided for SAFETY and to PREVENT
EQUIPMENT PROBLEMS. To help recognize this information,
observe the following symbols:
IMPORTANT! Warns about hazards that can result
in personal injury or Indicates factors concerned with
assembly, installation, operation, or maintenance which
could result in damage to the machine or equipment if
ignored.
CAUTION ! Warns about hazards that can or will cause minor
personal injury or property damage if ignored. Used with symbols
below.
WARNING ! Warns about hazards that can or will cause serious
personal injury, death, or major property damage if ignored. Used
with symbols below.
Only qualifi ed personnel should install, operate and repair
pump. Any wiring of pumps should be performed by a qualifi ed
electrician.
WARNING ! - To reduce risk of electrical shock, pumps
and control panels must be properly grounded in
accordance with the National Electric Code (NEC) or
the Canadian Electrical Code (CEC) and all applicable
state, province, local codes and ordinances. Improper
grounding voids warranty.
WARNING! - To reduce risk of electrical shock, always
disconnect the pump from the power source before
handling or servicing. Lock out power and tag.
WARNING! Operation against a closed
discharge valve will cause premature bearing
and seal failure on any pump, and on end
suction and self priming pump the heat build
may cause the generation of steam with resulting dangerous
pressures. It is recommended that a high case temperature
switch or pressure relief valve be installed on the pump body.
CAUTION! Pumps build up heat and pressure
during operation-allow time for pumps to cool
before handling or servicing.
WARNING! - DO NOT pump hazardous materials
(fl ammable, caustic, etc.) unless the pump is specifi cally
designed and designated to handle them.
CAUTION! - Do not block or restrict discharge hose, as
discharge hose may whip under pressure.
WARNING! - DO NOT wear loose clothing that may
become entangled in the impeller or other moving parts.
Always wear appropriate safety gear, such as safety
glasses, when working on the pump or piping.
WARNING! - Keep clear of suction and discharge
openings. DO NOT insert fi ngers in pump with power
connected.
Always wear eye protection when working on pumps.
Make sure lifting handles are securely fastened each
time before lifting. DO NOT operate pump without
safety devices in place. Always replace safety devices
that have been removed during service or repair.
Secure the pump in its operating position so it can not
tip over, fall or slide.
DO NOT exceed manufacturers recommendation for
maximum performance, as this could cause the motor
to overheat.
WARNING! If Engine driven, never operate in an
enclosed building or area where exhaust gases can
accumulate. Never operate near a building where
exhaust gases can seep inside. Never operate in a
pit or sump without making provisions for adequate
ventilation.
WARNING! Do not breathe exhaust fumes when
working in the area of the engine. (Exhaust gases are
odorless and deadly poison.)
WARNING! Allow exhaust system to cool before
touching.
Never add fuel to the tank while the engine is running.
Stop engine and allow to cool.
Do not smoke while refueling the engine
Do not refuel near open fl ame
Carefully read instruction manuals supplied by engine
manufacture before attempting to assemble, operate
or service the engine or any part. The “WARNING”
statements indicate potentially hazardous conditions for
operator or equipment.
WARNING! Products Returned Must Be Cleaned,
Sanitized, Or Decontaminated As Necessary Prior
To Shipment, To Insure That Employees Will Not Be
Exposed To Health Hazards In Handling Said Material.
All Applicable Laws And Regulations Shall Apply.
Bronze/brass and bronze/brass fi tted pumps may
contain lead levels higher than considered safe for
potable water systems. Lead is known to cause cancer
and birth defects or other reproductive harm. Various
government agencies have determined that leaded
copper alloys should not be used in potable water
applications. For non-leaded copper alloy materials of
construction, please contact factory.
IMPORTANT! - Crane Pumps & Systems, Inc. is not
responsible for losses, injury, or death resulting from a
failure to observe these safety precautions, misuse or
abuse of pumps or equipment.
SAFETY FIRST!
Hazardous fluids can
cause fire or explo-
sions, burnes or death
could result.
Extremely hot - Severe
burnes can occur on contact.
Biohazard can cause
serious personal injury.
Hazardous fluids can Hazard-
ous pressure, eruptions or ex-
plosions could cause personal
injury or property damage.
Rotating machinery
Amputation or severe
laceration can result.
Hazardous voltage can
shock, burn or cause death.
Toxic Fumes -
Breathing can cause
nausea, fainting or death
Eye protectiong required

4
SECTION A: GENERAL INFORMATION
A-1) To the Purchaser:
Congratulations! You are the owner of one of the fi nest
pumps on the market today. CROWN® Pumps are products
engineered and manufactured of high quality components. Over
one hundred years of pump building experience along with a
continuing quality assurance program combine to produce a
pump which will stand up to the toughest pumping projects.
This manual will provide helpful information concerning instal-
lation, maintenance, and proper service guidelines.
A-2) Receiving:
Upon receiving the pump, it should be inspected for damage
or shortages. If damage has occurred, fi le a claim
immediately with the company that delivered the pump. If the
manual is removed from the crating, do not lose or misplace.
A-3) Storage:
Short Term - Crown pumps are manufactured for effi cient
performance following long inoperative periods in storage.
For best results, pumps can be retained in storage, as factory
assembled, in a dry atmosphere with constant temperatures
for up to six (6) months.
Long Term - Any length of time exceeding six (6) months, but
not more than twenty four (24) months. The units should be
stored in a temperature controlled area, a roofed over walled
enclosure that provides protection from the elements (rain,
snow, wind blown dust, etc..), and whose temperature can be
maintained between +40 deg. F and +120 deg. F.
If extended high humidity is expected to be a problem, all
exposed parts should be inspected before storage and all
surfaces that have the paint scratched, damaged, or worn
should be recoated with a water base, air dry enamel paint. All
surfaces should then be sprayed with a rust-inhibiting oil.
A-4) Service Centers:
For the location of the nearest Service Center, check your
Crown pumps representative or Crane Pumps & Systems in
Piqua, Ohio, telephone [phone] or Crane Pumps &
Systems Canada Inc., Brampton, Ontario [phone].
SECTION B: INSTALLATION RECOMMENDATIONS
(See Figure 1 For Typical Installation)
B-1) Clearances:
Allow a minimum of 18 inches in front of the pump case cover
or hatch cover to permit easy removal and access to the
interior of pump. On belt-drive units, allow a minimum of 10
inches at the shaft end to permit easy removal of the pedestal
or rotating cartridge.
B-2) Pump Suction:
1. Locate the pump as close to the wet well as possible.
The closer the pump can be located to the high water
level, the faster the pump will prime and the greater the
capacity that can be obtained.
2. All horizontal suction lines (item 3) should slope up to the
pump to avoid trapped air pockets.
3. When horizontal suction line (item 3) exceeds 10 feet, or
less than 1 foot or when total horizontal and vertical
length exceeds 30 feet, consult factory for operation limits.
4. An adjustable stand, pipe clamp (item 16) or fl oor fl ange
must be installed to support the weight of the suction line.
5. Suction line must be air tight.
6. Maximum performance is obtained when suction line and
pump size are matched (with a 3 inch pump use a 3 inch
suction line).
7. The velocities of 8 to 11 feet per second are obtained
when the suction line is sized to the pump suction. This
tends to keep solids in suspension and the suction line
cleaner.
8. The use of oversized suction line will increase priming
time and could cause clogging at the reducers.
9. Do not use a suction strainer on the suction line.
Solids handling pumps are designed to handle the solids
normally found in a wet well. Should an extreme case
exist (such as a large amount of undissolved paper
material), the possible use of a trash basket to screen
the infl uent should be considered.
10. A suction end-bell (item 6) is required only when a
minimum submergence and velocity demand. Allow at
least 6 inches clearance between bottom of wet well and
the bottom of the suction end-bell and 12 inches
between the bottom of the suction end-bell and the
low level pump cutoff to prevent vortexing on all 3, 4 and
6 inch pumps.
11. A long radius elbow (item 4) is preferred especially if it is
needed to help reduce friction.
12. The vertical portion (item 5) of the suction line should
be in one piece to eliminate joint leaks.
13. The easy-access elbow (item 2) can be turned 90° right
or left to facilitate installation and accessibility to the
pump case cover.
B-3) Base Mounted Units:
All fl exible coupled and V-Belt drive pump units should be
permanently grouted onto concrete foundation. The pumps
should be level to provide favorable operating conditions.
Check and realign the fl exible coupling in order to eliminate
excessive wear on the coupling. The standard couplings that
are furnished can be adequately aligned with a straight edge.
On other types it will be necessary to read their instructions.
In no case should there be any problems with fl exible cou-
plings if alignment is proper.
All pump units rotate clockwise when looking from the mo-
tor end (driven end) of the pump. Also, rotation arrows are
located on the pump.

5
B-4) Pump Discharge:
1. The air bleed line (item 12 & 13) should be 3/4 inch on
3 inch pumps, one inch on 4 and 6 inch pumps in order
to reduce the priming time to a minimum. This is
mandatory on force main installations.
2. To eliminate recirculation, a fl ow control device on the
bleed line may be considered.
3. An optional air-bleed valve nay be placed in this line, but
it is not necessary, See Figure 2. A clear plastic line is
excellent, allowing the operator to detect any clogging.
4. There are two ways (item 12) & (item 13) of returning
this line to the pit: (a) The line discharging above the
liquid level (item 12). (b) The line discharging below the
low liquid level (item 13). The (a) condition is generally
accepted, but has the disadvantage of losing its prime
if the suction check valve is held open by debris.
This is generally no problem at higher speeds (1600 rpm
or higher).
The (b) condition works well for slower speeds where
considerable debris is encountered. However, the pipe
should not project more than one foot below the low
liquid level. If there are no leaks in the system, the pump
never loses prime.
FIGURE 1
TYPICAL INSTALLATION
FIGURE 2

6
5. The return of the air bleed line to the pit must be
separated from the suction pipe as far as possible in
order to eliminate churning air into the sump liquid.
6. The discharge check valve (item 7), required by standard
of design, should be installed in the horizontal position to
avoid deposits between the disc and the body. This
check valve should have a spring loaded or externally
weighted arm.
7. Standards of design require a gate valve (item 8) down
stream from the check valve and is necessary when
cleaning or repairing the check valve.
8. Support the discharge line to prevent strain on the pump
case.
B-5) Infl uent Pipe:
If the infl uent pipe (item 15) is located where falling water
churns air into the sump liquid causing air to enter the suction
pipe, a baffl e may be necessary to keep pumping and priming
from being aff ected.
B-6) Sump Liquid Level Controls:
Because priming will be severely aff ected, air bubbling liquid
level control pipes (item 14) must not be located near or
attached to the suction inlet pipe (item 5).
SECTION C: PARTS & FUNCTIONAL INFORMATION
See Figure 3 For Typical Pump Cut-away, Actual cross
sections at back of manual.
(item 20) Easy access clean out & fi ll hole. The cover serves
as a fi ll hole for initial priming of the pump, for easy examina-
tion or replacement of check valve, and as a quick clean out
hatch for unclogging the impeller.
(item 21) Easily replaceable check valve.
(item 22) The gaskets at the suction and discharge fl anges
are of a high quality and not likely to leak, but the suction
gasket should not be overlooked if trouble exists.
(item 23) If this o-ring leaks (even only a few drops), a prim-
ing problem will exist. Make sure the chamfer which the o-ring
seats against is clean and smooth with no nicks in the o-ring.
Always grease the o-ring and the area where it seats when
installing.
(item 24) The large hatch cover can be easily removed for
inspection or replacement of internal parts on 2” through 6”
pump models only.
(item 25) This o-ring is not as critical as (item 23). However,
it must never leak around the top half of the case or suc-
tion problems can exist. Always grease this o-ring and the
complete area this o-ring slides in before inserting case cover
(item 24).
FIGURE 3

7
(item 26) The clearance between the impeller and the volute
is set at approximately .015 inches at the factory. As wear
clearance increases, the pump head pressure is reduced
and priming ability is severely aff ected. Readjust by removing
shims (item 41).
(item 27) Both drain plugs must be removed to properly drain
the pump. When draining for winter storage or for sever cold
weather, remove the complete hatch cover (item 24).
(item 28) Impeller.
(item 29) Volute.
(item 30) This o-ring is not critical in regard to leaks. It nor-
mally is covered with water.
(item 31) Seal plate.
(item 32) It becomes critical if this o-ring should leak on high
suction lifts. The situation becomes more critical if the clear-
ance at (item 39) becomes great due to severe impeller - seal
plate wear. A clearance of 1/8 inch at (item 39) is approaching
critical.
(item 33) This is the mechanical seal.
(item 34) This lip type seal retains the grease provided by the
spring loaded grease cup (item 38) and normally should be
replaced when the mechanical seal is replaced.
(item 35) The pedestal assembly complete with impeller
attached can be removed through the pump case opening
on the following models: PO2LA-6C, PO3LA-7B, PO3LB-7B,
PO4LA-8D, PO4LB-8D, PO4LC all sizes, PO3LC-8L, PO6LB
& PO6LC all sizes. Those models requiring the impeller to
be removed by fi rst removing the hatch cover (item 24) and
volute (item 29) are as follows: PO3LA-8D and PO4LA-9D. All
impellers are keyed on, and two threaded holes are provided
so a common puller can be used.
(item 36) Lip-type seals are used at these locations to retain
the oil and exclude dirt from the pedestal bearings. A dam-
aged lip seal, a plugged breather, or too high an oil level can
cause oil to leak from the seals.
(item 37) This is a breather cap that allows expansion and
contraction of the air in the pedestal.
(item 38) This spring loaded grease cup is described in
Section F-1. Never remove the grease cup and insert a zerk
fi tting for lubricating this seal or the seal will be permanently
damaged.
(item 39) A new pump has a 1/32 inch clearance at this point,
and when this wears to 1/8 inch or more, priming is aff ected
considerably. This is especially true on high suction lifts.
(item 40) The volute is normally held in the case by three
stainless steel studs and cap screws. The volute can be
removed only after the hatch or case cover (item 24) has
been removed.
(item 41) Horse shoe shims are used between the case and
the pedestal permitting external adjustment of clearance
between impeller and volute wear surface (item 26) without
dismantling the pump. Loosen 6 nuts, remove or add shims
in equal amounts at each location, and retighten the 6 nuts
until the proper clearance is obtained. The thinnest shims are
approximately .015 inches thick. O-ring (item 32) provides the
necessary sealing at all times.
SECTION D: OPERATION RECOMMENDATIONS
1. Before starting the pump:
A.) Check the pedestal (item 42) for the proper amount
of SAE No. 30 non-detergent oil.
B.) Place the self feeding grease lubricator (item 38)
in operation by turning the wing nut on the threaded
plunger shaft counter clockwise as far as it will go.
Do not force the plunger into the grease cup as this
can cause a seal failure. See Section F, Paragraph. 1
and 2 for instructions on fi lling the grease cup
C.) For priming purposes, fi ll the pump case with water.
2. The pump case will not freeze during cold weather
operation as long as the pump is running. To avoid
freezing during idle periods:
A.) Drain the pump case by removing the one or two
drain plugs (item 27) at the bottom of the pump case.
B.) Heat the room, the pump or the water in the pump.
An electrical pump case heater is available from
the factory as an option.
3. To obtain more capacity, increase the speed of the pump.
To reduce capacity, lower the speed of the pump or
restrict the discharge line by means of a valve.increasing
the speed will require more horsepower.
4. The discharge (item 8) (See Figure 1) of a self-priming
centrifugal pump may be closed without damaging the
pump. However, it is undesirable to run the unit for a long
period of time with a closed discharge as the liquid in the
pump case may heat up and reach the boiling point after
a short period of time.
5. The pump should not be run without liquid in the pump
case as the rotary shaft seal may be damaged.
6. If the pump has been idle for some time between uses, it
may appear to be stuck or locked in place. This sticking
may be caused by a fi lm of rust or dirt lodging between
the impeller (item 28) and the pump volute (item 29).
All that is necessary is to give the shaft a quick jerk.
7. Sometimes it is desirable to run a pump at a higher
speed to improve priming without increasing capacity.
This is done by increasing the speed of the pump, which
increases the capacity and head, and then spring load or
weight the discharge check valve (item 7) lever arm. This
puts an imitation head on the pump. A powerful spring
is needed if the speed is increased considerably. The
spring or weight on the check valve will allow debris to
pass through if necessary.

8
SECTION E: PREVENTATIVE MAINTENANCE
Once a year, or whenever the suction line will not hold a
column of water, remove the Easy-access elbow cover (item
20) on the pump suction and inspect the check valve (item 21).
The rubber check valve may become torn or may deteriorate
with use. Deposits may also build up between the rubber and
the seat. When replacing, use a little grease on the rubber for
proper sealing.
There are times when it would seem proper to check the
internal parts, the volute (item 29), seal plate (item 31), impel-
ler (28), shaft and o-rings for wear and deterioration. However
as long as the pump works well, do not disturb. If the shaft
seal (item 33) ever needs replacement, these parts can be
inspected.
If the impeller is ever removed for any reason when the
mechanical seal (item 33) is in good condition, do not
disturb the seal other than removing or replacing the seal
spring, otherwise the seal will leak and requirereplacing.
SECTION F: LUBRICATION MAINTENANCE:
F-1) Single Mechanical Seal - Grease Lube: See Figure 4.
A self-feeding lubricator (item 38) is provided to supply grease
to the shaft seal of the pump on pumps with single seals.
The grease cup is empty when the wing nut, positioned at
the outer end of the threaded plunger shaft, recedes to the
cap of the grease cup. To refi ll the grease cup, rotate the
wing nut clockwise as far as it will go; attach a zerk gun to
the zerk fi tting; then fi ll until grease oozes from the relief
hole on the side of the cup. For operation, return the wing
nut to the end of the plunger. Never force the plunger
into the grease cup as this can cause seal failures.
A #1 grease is normally recommended. However, where
high ambient temperatures are encountered, such as direct
sunlight, a #2 grease can be used. Use a water resistant,
nonfi berous grease. Lithium base greases are excellent and
molydisulfi de is acceptable. Normally, the sodium soap base
greases are the only non-water resistant types that are not ac-
ceptable for mechanical seal lubrication.If the pump is inopera-
tive 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.
F-2) Double Mechanical Seal - Oiler (See Figure 5)
1. Observe oil level in the oil reservoir. Do this only while
pump is off and not under pressure (reading the oil level while
pump is under pressure could give a false reading). The level
can be read through the clear plastic tube (item 3). If air is
visible through the tube then oil needs to be added.
2. To add oil to the reservoir, follow these instructions: First,
be certain that the pump is not running and the case is not
under pressure. Then remove the 3/8ª pipe plug (item 2) from
the oil fi ll port. Through the oil fi ll port add SAE 30 non-deter-
gent oil until the chamber is full to the top. Replace the 3/8ª
pipe plug. If the plug does not seal tightly it may be necessary
to add pipe thread sealant to the plug. The plug must not leak
in order for the oiler to operate properly.
FIGURE 5
FIGURE 4

9
3. After adding oil it is a good idea to bleed off any air that is
in the seal cavity. To do this fi rst make sure that the pump is
running. Second, use a fl at head screwdriver to turn the air
bleed valve head (item 1) counterclockwise. This will open
the air bleed valve and at this point any air in the seal cavity
will be purged (bubbled) out through this valve. When nothing
but oil is coming out, then close the valve. This can only be
done when the pump is running (i.e. when there is pressure
in the oiler reservoir).
4. DO NOT loosen or open any other part of the pump or oiler
reservoir while the pump is running or under pressure. Oil can
spray out if under pressure.
IMPORTANT! - Always Wear Safety Glasses
While Working On The Pump Or Oiler Reservoir.
Use Caution When Working Around Pumps Or
Other Rotating Machinery.
F-3) Bearing Lubrication - Oil:
Bullseye Glass (See Figure 6)- Observe pump shaft bearing
oil level through ©bullseyeª glass plug (item 1) located on the
right hand side of the bearing pedestal (when looking from
the motor side). The oil level should be up to the center of the
bullseye. It should be noted that in order for both bearings to
be lubricated properly, the pump must be mounted level. If
the oil level is low, remove vent plug (item 2) and add SAE 30
non-detergent oil. Replace vent plug (item 2) when fi nished
refi lling.
Opto-Matic Oiler (See Figures 7 & 8)-On pumps where the
Opto-matic constant level oiler is used, the oiler will provide
an oil level to the center of the lower ball of the bearings, if
the pump is sitting level and the oiler is properly fi lled. Refi ll
with SAE 30 non-detergent oil. Replace vent plug (item 2)
when fi nished refi lling.
Fill bottle as shown in Figure 8, then invert and quickly screw
into lower reservoir. Several fi llings of the bottle may be re-
quired before the oil level in the bearing reservoir is equal to
the level for which the oiler is set. Never fi ll through the lower
reservoir because there is danger of over fi lling and oil being
thrown from the seals. If there is ever any question about the
oil level, drain the reservoir and start over.
If for various reasons, conditions require a higher oil level,
loosen the screws as shown in Figure 8, adjust to the desired
level and tighten screws.
Note: A vent is furnished on the top of the bearing housing
and this must be clean and open so the oiler can maintain its
proper oil level.
DO NOT clean the plastic bottle with solvents such as alcohol
or lacquer thinners. They will attack and destroy the plastic.
SECTION G: SHAFT SEAL REPLACEMENT:
G-1) Replacement Through Hatch Cover:
G-1.1) Disassembly:
All parts of the pump are easily dismantled by simply remov-
ing nuts and screws. Rotating parts of the shaft seal grip
the shaft by friction and may be frozen to the shaft through
long usage. If the mechanical shaft seal is not leaking and
it is necessary to dismantle part of the pump for inspec-
tion or cleaning, DO NOT disturb the shaft seal other than
its spring if the impeller is removed. Once a shaft seal
has been in operation it cannot be reused without leaking.
Remove hatch cover (24), by removing wing nuts and prying
the cover off . Now remove capnuts (40) and pull the volute
(29) and seal Plate (31) out of the pump case, (See Figure 3).
Remove the impeller nut, it is a standard right hand thread,
remove impeller washer, and then remove the impeller (28).
The impeller has been provided with two drilled and tapped
holes for a wheel puller, if necessary use a wheel puller to
remove the impeller.
FIGURE 6
FIGURE 7
FIGURE 8

10
Remove the seal spring and spring holder. At this time the
rotating portion and the seat can be removed without further
dissassembling of the pump. However, it is generally easier to
remove the four (4) nuts that hold the pump side in place and
by using two pry bars, force the pump side with the old seal
off the shaft. The grease cup (38) must fi rst be removed.By
using this method the lip seal (34) can be be replaced and
the seal seat can be easily removed and cleaned. Use care
in cleaning the shaft because nicks can allow the new seal to
leak.At this time the shaft slinger used on single seal applica-
tions, should be examined and replaced if necessary.Inspect
o-ring (32) carefully for cuts or nicks. Clean the groove in the
pump side and the mating bore in the pump case carefully
and grease at reassembly. See Section G-3 for Single seal
installation or G-4 for Double seal installation.
G-1.2) Reassembly:
After the seals have been replaced and the impeller secured
on the shaft (see Table 1), Place the seal plate (31) over the
studs of the volute (29) and insert this assembly over the im-
peller with the volute studs projecting through the case.
Replace the cap or self locking nuts and tighten them (only
fi nger tight at this time). NOTE: On models PO6LB and PO6LC
it is necessary to insert the seal plate over the impeller then
insert the volute.
Replace o-ring (30) on the volute, and o-rings (23) and (25)
on the hatch cover, grease these o-rings and the areas they
contact thoroughly. Now insert the hatch cover (24) and
securely tighten the wing nuts. Normally these wing nuts can
be tightened suffi ciently by hand. This method of securing the
hatch cover fi rst, centers the volute properly over the impeller.
Tighten the cap nuts (40) that hold the volute in place.
The clearance between an open faced impeller and its wear sur-
face in the volute is set at the factory to approximately .015 inch-
es on PO2 to PO6 pumps. This clearance is readjustable on all
pumps by adding or removing of horseshoe shims (33) located
at the bearing adapter fl ange, or on small units by relocating the
shaft at the clamping arrangement. Add or remove shims until
the impeller rubs slightly, then add one thin shim (.015 thick) on
2” to 6” pumps at each location and tighten the nuts securely.
G-2) Replacement By Removing Pedestal:
On belt drive units the belt tension must be relieved and the
guard and the belts removed. On fl exible coupled units the
motor base bolts must be removed and the motor detached
from the coupling. Then remove the pedestal bolts attaching
the pedestal to the base.
The only models that have impellers too large to be removed
through the case pump side opening are PO3LA-8D and
PO4LA-9D.
After removing the pedestal assembly, the impeller, the old
seal, and pump side parts are removed. First remove the
impeller nut, it is a standard right hand thread, then remove
the impeller (28). The impeller has been provided with two
drilled and tapped holes for a wheel puller, if necessary use a
wheel puller to remove the impeller. Remove the the four (4)
nuts that hold the pump side in place and by using two pry
bars, force the pump side with the old seal off the shaft. The
grease cup (38) must fi rst be removed. The lip seal (34) can
be be replaced and the seal seat can be easily removed and
cleaned. Use care in cleaning the shaft because nicks can al-
low the new seal to leak. At this time the shaft slinger used on
single seal applications, should be examined and replaced if
necessary.Inspect o-ring (32) carefully for cuts or nicks. Clean
the groove in the pump side and the mating bore in the pump
case carefully and grease at reassembly. See Section G-3 for
Single seal installation or G-4 for Double seal installation.
Reassemble pedestal assembly into pump and set the clear-
ance by adding or removing shims (33) until the impeller rubs
slightly, then add one thin shim (.015 thick) on PO2 to PO6
pump at each location and tighten the nuts securely.
G-3) Single Seal Installation:
Carefully identify all the parts in Figures 9 and 10, and famil-
iarize yourself with their part names.
The mating ring (7) and seat (1) have been precision lapped
and must not be scratched or cracked during assembly. Also,
cleanliness is of utmost importance.
STEP 1:
Make sure that the shaft and seat areas in the pump side are
as clean as possible. Shoulder “A” on the shaft must not be
sharp, but neatly rounded and polished to a 1/32” radius. This
radius and the shaft, on which the rubber bellows grips, must
be polished with 180 to 240 grit emery cloth. The seal will
install relatively easy if the shaft is properly polished.
STEP 2:
Install the seat assembly (1 and 2 or 1A and 2A, see Figure
10) (see section G-4), in the bottom of the pump side using
P-80 rubber lubricant emulsion (from International Products
Corp.) or SAE 10 non-detergent oil can be used, on the rub-
ber parts. They may install easier by fi rst inserting the rubber
part and then sliding the seat part into the rubber. All of this
must be done with the fi ngers only.
STEP 3:
We are now ready to install the rotating portion of the seal
without the spring (see section G-4). Lubricate the shaft and
the inside of the bellows (8) each with 2 or 3 drops of P-80
rubber lubricant emulsion (from International Products Corp.)
or SAE 10 non-detergent oil can be used. Now with dry clean
hands, grasp this rotating portion in one or both hands (one
hand for small seals - two hands for large sizes) and use a
circular and rocking motion to push this portion onto the shaft,
FIGURE 9

11
sliding it all the way down against the bottom stationary seat.
If a seal installing tool or piece of tubing is used to push this
portion on, it must push against the heel of the rubber bellows
(8) and drive band (4). Once the seal is in place install the
spring (5) and the spring holder (6) if one has been furnished
with your particular seal.
The spring holder (6) is furnished specifi cally for installations
where the impeller hub is not large enough and is needed to
properly space the spring. If the spring does not go over the
hub of the impeller the spring holder (6) can be left out.
STEP 4:
Replace the impeller, torque impeller nut per Table 1, and
your seal installation is complete.
STEP 5:
Seals of this type are generally lubricated by a spring loaded
automatic grease cup. For grease lubrication, use a good
quality non-fi brous #1 or #2 lithium base grease. The #1 is
best, except when high ambient temperatures are encoun-
tered.
TABLE 1 - Impeller Nut Torque Values
PUMP MODEL NUT P/N TORQUE VALUE
PO2LA M-7246 55 ft. lbs
PO3LA M-7883 100 ft. lbs
PO3LB M-7883 100 ft. lbs
PO3LC M-7884 240 ft. lbs
PO4LA M-7884 240 ft. lbs
PO4LB M-7884 240 ft. lbs
PO4LC M-7884 240 ft. lbs
PO6LB 525-00263 300 ft. lbs
PO6LC 525-00263 300 ft. lbs
G-4) Double Seal Installation:
Carefully identify all the parts in fi gures 10 and 11, and famil-
iarize yourself with their name parts. You will note that inner
and outer stationary seats are identical. The rotating portion
is held together with four clips (12) and masking tape. DO
NOT REMOVE THIS TAPE AND CLIPS until the proper time
of assembly. Cleanliness is of utmost importance. The carbon
mating rings (10), (3), and ceramic seats (1) have been preci-
sion lapped and must not be scratched nor cracked during
assembly. See Figure 12.
STEP 1:
Make sure that the shaft and seat areas in the pump side and
closure plate are as clean as possible. Shoulder “A” on the
shaft must not be sharp, but neatly rounded and polished to a
1/32” radius. If this radius and the fi rst 1/4” past the shoulder
is highly polished with crocus cloth, the rotating portion of the
seal will install relatively easy. The rest of the shaft on which
the rotating portion of the seal will grip, should be cleaned
with 180-grit emery cloth.
STEP 2:
Install the seat assembly (1 & 2), see Figure 12 and section
G-4, in the bottom of the pump side and closure plate using
P-80 rubber lubricant emulsion (from International Products
Corp.) or SAE 10 non-detergent oil can be used on the rubber
parts. They may install easier by fi rst inserting the rubber cup
(2) and then sliding the ceramic seat (1) into the rubber cup.
This all must be done with the fi ngers only.
STEP 3:
We are now ready to install the rotating portion of the seal
(see section G-4) with CLIPS AND TAPE STILL IN PLACE.
Lubricate the shaft and internal rubber parts of the rotating
portion of the seal with P-80 rubber lubricant emulsion (from
International Products Corp.) or SAE 10 non-detergent oil can
be used. Note where the o-ring (9) is in the seal. This o-ring
must be the fi rst rubber part to go onto the shaft. Grasp the
complete rotating assembly in both hands and then by using
a circular and rocking motion, push this portion onto the shaft,
sliding it all the way down against the bottom stationary seat.
1 - Ni-Resist Stationary Seat
1A - Ceramic Stationary Seat
2 - Buna-N Seat Ring
2A - Buna-N Seat Cup
3 - Stainless Retainer
4 - Stainless Drive Band
5 - Stainless Spring
6 - Stainless Springholder
7 - Crane-Carb® Mating Ring
7A - Carbon Mating Ring
8 - Buna-N Bellows
Cross Section of Seals.
Two Styles Shown.
FIGURE 10
FIGURE 11

12
STEP 4:
Now with a tweezers or a small long nose pliers, remove the
masking tape and the four clips (12) . Immediately place the
closure plate with its gasket in place onto the pump side and
insert the capscrews. This completes the seal installation.
STEP 5:
Double seals of this type are generally lubricated through the
use of a pressure balanced oil cylinder or a spring loaded au-
tomatic grease cup. In either case, the air must be bled from
this seal cavity while it is being fi lled with oil or grease. Where
oil is used, a thumb vent screw is furnished for venting and
where grease is used, a 1/8” pipe plug is furnished. Be sure
to vent all the air out of this cavity. It is best to use an SAE 30
non-detergent oil for the oil lubrication.
G-4) Seal Installation Tool:
G-4.1) Installing stationary element:
A seal installation tool must be used. The seal must be
seated securely in the seat ring with the lapped face out.
The unlapped face is marked and correctly assembled when
shipped. Oil the seat ring with light oil and seat it fi rmly and
squarely. If this cannot be done with the fi ngers, use a sleeve
as shown in Figure 13, inserting the cardboard shipping disc
between the sleeve and the lapped face to prevent scratching
sealing face.
G-4.2) Installing rotating element:
Oil shaft with light oil. Shaft should be clean and polished
smooth. Slide seal body on shaft (washer end fi rst) and seat
fi rmly. A sleeve as shown in Figure 14 will facilitate this opera-
tion and prevent the rubber driving ring from pulling out of
place as the seal body is slid along the shaft.
Assembly of impeller automatically sets the seal in the proper
position. MAKE SURE AT ALL TIMES, AND PARTICULAR-
LY BEFORE FINAL ASSEMBLY, THAT BOTH SEALING
FACES ARE ABSOLUTELY CLEAN.
NOTE: Do not use petroleum based products to lubricate
EPT or EPDM elastomers - use only water based lubricants.
SECTION H: Belleville Washer Installation:
The bearing support bracket pedestals use belleville spring
washers between the bearing and closure plate at the shaft
extension end. These eliminate the shaft end play and must
be installed correctly as shown in Figures 15 and 16.
FIGURE 12 1 - Ceramic Stationary Seat
2 - Buna-N Cup
3 - Carbon Mating Ring
4 - Buna-N Bellows
5 - Stainless Retainer
6 - Two Springs
7 - Stainless Disc
8 - Stainless Drive Band
9 - Buna-N O-ring
10 - Carbon Mating Ring
11 - Tefl on Back-Up Ring
12 - Holding Clips (4)
FIGURE 13
FIGURE 14
FIGURE 15

13
SECTION I: OPTIONAL EQUIPMENT:
I-1) Pump Case Heater:
The pump case heater is located on the bottom right hand
side of the pump as viewed from the shaft end on 3” through
6” models and the thermostat will replace the bottom pipe
plug on the front of the pump case. For 2" pumps, the heater
will replace the bottom pipe plug on the front of the pump
case and the thermostat is located in the fi ll hole cover. The
heater is rated for 250 or 350 watt, 115 or 230 volts AC. The
thermostat is rated for 10 Amp @ 115 volt or 5 Amp @ 230
Volt, On 37°F Off at 40 - 1/10°F. See Figure 17 for wiring
connection.
I-2) Temperature Control:
The pump temperature control is attached to pump case
so that the bimetal disc sensing element is fi rmly against
the pump’s surface, thereby sensing the pump’s surface
temperature.
Wiring Instructions: - (See Figure 18a)
1. For N.C. (Normally Closed) Hook up - Use white wire
and yellow wire (Contact opens at 130°F, closes when
temp. drops 10-25°F).
Use RED wire and BLACK wire to motor controls.
2. For N.O. (Normally Open) Hook up - Use white wite and
brown wire (Contact closes at 130°F, opens when temp.
drops 10-25°F).
IMPORTANT ! - USE ONLY TWO WIRES, BLANK
OFF WIRE NOT NEEDED.
Wiring Instructions: - (See Figure 18b)
1. For N.C. (Normally Closed) Connection - Contact opens
at 130°F, closes at 100°F.
Use RED wire and BLACK wire to motor controls.
2. For N.O. (Normally Open) Connection - Contact closes
at 130°F, opens at 100°F.
Use RED wire and BROWN wire to motor controls.
IMPORTANT ! - USE ONLY TWO WIRES, BLANK
OFF WIRE NOT NEEDED.
N516-00037 High-Temp Control
Obsoleted Oct. 1, 2016
FIGURE 16
The normal installation
consists of 2 washers
as shown
On some models
more spring loading is
required and an extra
fl at washer is added as
shown
FIGURE 17
FIGURE 18b
FIGURE 18a

14
SECTION J: TROUBLE SHOOTING:
Locating a failure in a malfunctioning pump can be most
frustrating and even futile if not approached in a systematic
manner. To aid in locating the problem we recommend the
permanent installation of both of the following:
1. A vacuum gauge (10), See Figure 1, to provide information
from the suction side of the pump. A drilled and tapped hole
has been provided in the suction fl ange for such a gauge.
2. A low-pressure, pressure gauge (11), See Figure 1, to sup-
ply information from the discharge side of the pump. A drilled
and tapped hole has been provided on the discharge fl ange
for such a gauge.
Always use a small valve for attaching the gauges and keep
them shut off when not in use. A vacuum gauge left to fl utter
with pulsations will develop a crack in the internal tube caus-
ing it to leak unknowingly and give priming problems.By using
the vacuum and pressure gauges, one will be able to locate
most of the problems that will occur.
Most of the problems encountered in self-priming pumps are
due to air leaks on the suction side. Keeping this in mind, the
following chart should help locate the trouble.
If every check fails to identify where the leak is located, it may
be necessary to connect a pressure water supply to the drain
hole of the pump and hydrostatically test it. Keeping the water
pressure low, 5 to 10lbs. is ideal. Higher pressures may not
show an o-ring leak. Also remove the cover from the grease
cup to permit water to escape should the seal be leaking.
If the above shows no leaks, remove some bolts from the
suction fl ange, insert a solid steel backing plate and tighten
the fl ange. If, with the pump running, the vacuum gauge
reads as much or more than during normal operation, then
the problem is most likely in the suction pipe or sump area.
Don’t overlook the possibility of air entering the suction line,
air that could be coming from the air bubbler control pipe.
TROUBLE SHOOTING
CAUTION ! Always disconnect the pump from the electrical power source before handling.
If the system fails to operate properly, carefully read instructions and perform maintenance recommendations.
SYMPTOM POSSIBLE CAUSE(S) CHECK
A. Pump not primed - Vacuum
gauge reading less than normal
1. Air leak in suction side of system. a. Threaded joints in suction line for tight fi t
b. Gasket in suction line for tight fi t
c. O-rings in case cover for nicks or cuts
d. Mechanical seal for air leaks
e. Bottom drain plug for air leaks
f. O-rings in pump side for nicks or cuts
g. Vacuum gauge may be leaking internally
2. Air bleed line blocked, or Air bleed valve
closed. a. Check line or valve
3. Insuffi cient liquid in case a. Pump case for water level
b. Suction check valve for obstructions or deterioration
4. Operating speed to low a. Belts for proper tension
b. Motor for low voltage
5. Plugged pump a. Impeller for lodge foreign material
b. Vent line for stoppage
6. Mechanical defects
a. Impeller - volute for proper clearance
b. Impeller and volute for damage
c. Pump for worn parts
B. Pump not priming - Vacuum
gauge reads more than normal 1. Suction side of system clogged
a. End of suction line for obstructions
b. Suction pipe for obstructions
c. Suction check valve for obstructions
C. Pump primes - Vacuum gauge
reads normal, discharge gauge
reads lower than normal
1. Small air leak in suction side of system a. For excessive air in discharge line
b. Refer to A-1, a through g
2. Pump speed too slow a. Belts for proper tension
b. Motor for low voltage
3. Mechanical defects
a. Impeller - volute for proper clearance
b. Impeller and volute for damage
c. Pump for worn parts
D. Pump primes - Vacuum gauge
reads near normal, Discharge
gauge reads higher than normal
1. Plugged discharge a. Discharge line for obstructions
b. Discharge valves to insure proper operation
E. Pump looses prime when shut
off - Vacuum gauge recedes to
zero
1. Check valve leaking
a. Check valve for obstructions or deterioration
b. Leak in suction pipe threads or fl anges
c. Water level bubbler control line too close to suction pipe
d. The infl uent liquid for chuming air into the sump and
entering the suction pipe

15
SECTION K: REPLACEMENT PARTS
K-1 ORDERING REPLACEMENT PARTS:
When ordering replacement parts, ALWAYS furnish the fol-
lowing information:
1. Pump serial number and date code.
2. Pump model number.
3. Pump part number.
4. Part description.
5. Item part number.
6. Quantity required.
7. Shipping instructions.
8. Billing Instructions.
IMPORTANT ! When Ordering Parts, ALWAYS Provide
The Complete Part Number, Serial Number and Model
Number. Information Subject To Change Without Notice.
TROUBLE SHOOTING
CAUTION ! Always disconnect the pump from the electrical power source before handling.
If the system fails to operate properly, carefully read instructions and perform maintenance recommendations.
SYMPTOM POSSIBLE CAUSE(S) CHECK
F. Pump loose prime during op-
eration - vacuum gauge recedes
to zero
1. Drawdown too great a. Automatic cut-off control for failure
2. Pump taking air
a. Suction line for leak between cut-out and cut-off
b. End of suction line for vortexing to suction pipe
c. Water level bubbler control line too close to suction pipe
d. The infl uent liquid for chuming air into the sump and
entering the suction pipe
G. Pump primed and pumping,
but too noisy
1. Loose foundation
a. Foundation bolts for looseness
b. Grouting
c. For cracks
2. Air leaks a. Refer to A-1, a through g
3. Cavitation
a. Drawdown too great
b. Capacity too great
c. Unit not operating in proper NPSH rang
d. If reducing capacity quiets pump, then (c) above is
cause, close discharge valve partially
4. Bearings a. Balls for wear
b. Oil reservoir for lubrication
5. Misalignment a. Coupling for proper alignment
b. Check base, not properly bolted down
6. Vibration
a. Impeller for partial obstruction
b. Operating in cavitation range
c. Misalignment of coupling
H. Motor runing too hot
1. Low voltage a. Voltage at motor terminals when loaded
2. Overload
a. Amps at motor terminals when loaded
b. Trash lodged in pump impeller
c. Motor not large enough
I. Motor will not run
1. Overload relay kicked out
a. For one or more blown fuses
b. Fuses for proper size
c. For low voltage
2. Three phase motor hums but will not
rotate
a. For one of 3 blown fuses
3. Automatic sump control failure
a. Float rod for corrosion
b. Air bubbling pump not working
c. Air line for stoppage

16
FILL
123 456 7 8 9 10 11 12 13
15
16
17 18 19 20 21
22
23
24
25
26
27
28
2931
32 30
33343536373839404142
9
43
44
45
46
47
48
49
50
51
52
53
54
10
14
56
55
PUMP MODEL: PO2LA, 2C00D-0006C-001

17
PARTS KIT
Seal Kit.............................P/N: 089076 () 4, 11, 14, 29, 31, 34, 40, 42, 45, 54
Overhaul Kit, P02LA........P/N: 089087 () 4, 11, 14, 17, 18, 19, 20, 21, 26, 29, 31, 33, 34, 40, 42, 45, 54
PARTS LIST
ITEM QTY. PART NO DESCRIPTION
1 1 T-26624 Plate, Valve, Check
2 1 FP-3685-A Flange, Suction 2” NPT
3 1 4757 Plug, Pipe, Hex 1/4” NPT, Brass
4 1 T-15907  Valve, Check Neoprene
5 1 1-7-1 Screw, Hex Hd. 1/4-20 x 1.00 LG, Stainless
1 20-13-1 Washer, Lock, Split 1/4”
1 15-5-16 Nut, Hex 1/4-20, Stainless
1 P-3688 Valve, Check Neoprene
7 1 FP-4309 Elbow, Valve, Check
8 1 FP-4310 Cover, Fill
9 8 15-23-6 Nut, Hex 3/8-16, Zinc Pltd.
10 8 M-2635 Stud 3/8-16 X 1.50 Lg, Steel
11 1 T-26640  Gasket, Cover, Fill Buna-N
12 1 625-02802 Elbow, 2” NPT
13 1 625-02810 Nipple, Pipe 2” NPT x 3.50” Lg
14 1 M-2655  Cup, Grease
15 3 M-5479 Stud 3/8-16 x 1.75” Lg, Stainless
3 20-6-7 Washer, Flat 3/8”, Brass
3 M-6046 Nut, Cap, Hex 3/8-16, Steel/nylock
16 6 M-2635 Stud 3/8-16 X 1.50” Lg., Steel
6 20-14-6 Washer, Lock, Split 3/8”, Zinc Pltd.
6 15-23-6 Nut, Hex 3/8-16, Zinc Pltd.
17 1 M-6370  Spinner, Shaft Neoprene
18 1 089257  Glass, Sight
19 1 089258  Plug, Vent
20 2 625-00719  Bearing, Ball
21 2 T-27115  Gasket, Plate, Closure Vellumoid
22 2 FP-4342 Plate, Closure
23 2 M-6611 Spring, Disc
24 1 M-3169 Key 1/4” Sq X 1.50” Lg, Steel
25 1 T-27117 Shaft, Impeller
26 2 M-4799  Seal, Shaft
27 8 1-5-6 Screw, Hex Hd 1/4-20 X .75” Lg, Zinc Pltd.
8 20-13-6 Washer, Lock, Split 1/4”, Zinc Pltd.
28 1 FP-4341 Bracket, Support, Bearing
29 1 M-5625  Seal, Lip
30 1 FP-4343 Side, Pump
31 1 M-4292-F  Seal, Mechanical, 1.00”
32 4 M-2635 Stud 3/8-16 X 1.50” Lg, Steel
4 20-14-6 Washer, Lock, Split 3/8” Zinc Pltd.
4 15-23-6 Nut, Hex 3/8-16, Zinc Pltd.
33 6 T-27116  Shim, Plastic, .015”
6 T-27116-A  Shim, Plastic, .030”
34 1 M-6522  O-ring, Buna-N
35 1 FP-4305 Case, Pump
36 1 T-27337 Plate, Seal
37 1 FP-4348-B Impeller
38 1 TS-27114 Washer, Impeller, Stainless
39 1 M-7246 Nut, Lock 1/2-20, Stainless/Nylock
40 1 M-6457  O-ring Buna-N
41 1 FP-4307-B Volute
42 1 M-6458  O-ring Buna-N
43 1 625-00860 Plug, Pipe, Sq 1/8” NPT, Black
44 1 625-01247 Plug, Pipe 3/4” NPT, Galvanized
PUMP MODEL: PO2LA, 2C00D-0006C-001

18
45 1 M-6456  O-ring Buna-N
46 2 M-6499 Nut, Handle
47 2 M-2614 Stud 1/2-13 x 2.00” Lg, Steel
48 2 625-01104 Washer 1/2” Zinc Pltd.
49 1 M-4504 Key 3/16” Sq X .69” Lg, Steel
50 1 510-00521 Handle, Cover
51 2 2-114-6 Screw, Round Hd 1/4-20 X .50” Lg, Zinc Pltd.
2 20-13-6 Washer, Lock, Split 1/4”, Zinc Pltd.
52 2 M-5286 Stud 5/16-18 X 1.50” Lg, Steel
2 20-21-6 Washer, Flat 5/16”, Zinc Pltd.
2 M-3501 Nut, Wing 5/16-18, Zinc Pltd.
53 1 FP-4306 Cover, Case
54 1 T-26639  Gasket, Elbow Vellumoid
55 1 625-02828 Coupling, Reducer .38" x .25" NPT, Steel
56 1 625-01147 Nipple, Pipe .25" NPT x 1.50" Lg, Galvanized
PUMP MODEL: PO2LA, 2C00D-0006C-001

19
PUMP MODEL: PO3LA & PO3LB
PO3LA-7B, 3C01D-0007B-031
PO3LA-8D, 3C01D-0008D-031
PO3LB-7B, 3C03D-0007B-031

20
PUMP MODEL: PO3LA & PO3LB
PO3LA-7B, 3C01D-0007B-031
PO3LA-8D, 3C01D-0008D-031
PO3LB-7B, 3C03D-0007B-031
PARTS KIT
Seal Kit, P03LA/P03LB................P/N: 089077 (†) 4, 6, 10, 25, 31, 34, 39, 41, 51, 52, 54
Overhaul Kit, P03LA/P03LB........P/N: 089088 () 4, 6, 10, 17, 18, 19, 20, 25, 28, 31, 33, 34, 39, 41, 51, 52, 54
PARTS LIST
ITEM QTY. PART NO. DESCRIPTION
1 1 FP-4531 Elbow, Suction 3”
2 1 625-02841 Pin, Spring 1/4” Dia x 1.00” Lg
3 2 1-149-6 Screw, Hex Hd 7/16-14 x 1.25”, Z.P.
2 20-27-6 Washer, Flat 7/16”, Zinc Pltd
4 1 MT-9037 †  Gasket, Valve Neoprene
5 1 P-4530 Cover, Hatch
6 1 P-3748 †  Weight, Valve
1 002161 †  Bolt, Carraige 1/4-20 x 1.25”, Steel
1 20-13-1 †  Washer, Lock, Split 1/4”, Stainless
1 15-5-1 †  Nut, Hex 1/4-20, Stainless
8 4 M-2614 Stud 1/2-13 x 2.00” Lg, Steel
4 20-15-6 Washer, Lock, Split 1/2”, Zinc Pltd
4 15-6-6 Nut, Hex 1/2-13, Zinc Pltd
9 1 625-02121 Flange, Companion 3”
10 1 M-2655 †  Cup, Grease
11 1 625-02828 Coupling, Reducer 3/8” x 1/4” NPT, Stl
12 1 625-01147 Nipple, Pipe 1/4” NPT x 1.50”Lg Galv.
13 1 A-6694 Fitting, Discharge 3”
14 3 625-01247 Plug, Pipe 3/4” NPT, Galv.
15 3 M-5479 Stud 3/8-16 x 1.75” Lg, Steel
3 20-6-7 Washer, Flat 3/8”, Brass
3 M-6046 Nut, Cap, Hex 3/8”-16, Steel/Nylock
16 6 M-2771 Stud 1/2-13 x 1.75” Lg, Steel
6 20-15-6 Washer, Lock, Split 1/2”, Zinc Pltd
6 15-6-6 Nut, Hex 1/2-13, Zinc Pltd
17 1 M-4313  Spinner, Shaft Neoprene
18 1 089257  Glass, Sight
19 1 089258  Plug, Vent
20 2 T-24886  Gasket, Plate, Closure Vellumoid
21 2 FP-4261 Plate, Closure
22 2 M-4489 Spring, Disc
23 1 M-2222 Key 5/16” Sq x 2.00” Lg, Steel
24 1 T-24888-C Shaft, Impeller
25 3 M-4080 †  Seal, Lip
26 8 1-5-6 Screw, Hex Hd 1/4-20 x .75” Lg, Z.P.
8 20-13-6 Washer, Lock, Split 1/4”, Zinc Pltd
27 1 FP-4263 Bracket, Support
28 2 M-6142  Bearing, Ball
29 1 512-00007 Sleeve, Shaft, Stainless
30 1 FP-4262-B Side, Pump
31 1 M-3983-F †  Seal, Mechanical, 1.375”
32 4 M-2635 Stud 3/8-16 x 1.50” Lg, Steel
4 20-14-6 Washer, Lock, Split 3/8, Zinc Pltd
4 15-23-6 Nut, Hex 3/8-16, Zinc Pltd
33 6 T-27239  Shim, Plastic, .025”
6 T-27239-A  Shim, Plastic, .015”
34 1 M-7965 †  O-Ring, Buna-N