Mega M4B User manual
OWNER’S MANUAL
Model M4B
Frame Mounted Centrifugal Pump
Hydraulic Coupling Drive
© 2012 BE1015-MEGA (08/13/12)
700 Osunda Rd. N.E., Albuquerque, NM 87113
Phone: 800-345-8889
www.MegaCorpInc.com
Important
For best possible performance and continuous, satisfactory operation,
read these instructions before installing your new pump.
Should service be required, this manual can be a valuable guide.
It should be kept near the installation for ready reference.
CORP.®
Table of Contents
Page 2
...................................................................................................................................... 3
..................................................................................................... 4
General Information........................................................................................................... 5
Parts Breakdown .......................................................................................................... 6, 7
General Information....................................................................................................... 8, 9
Routine Inspection........................................................................................................... 10
General Information......................................................................................................... 11
Packing Ring Replacement ............................................................................................ 12
Shaft Sleeve Installation/Replacement ........................................................................... 13
Impeller Replacement ..................................................................................................... 14
Mechanical Seal Maintenance/Replacement .................................................................. 15
Shaft Maintenance/Replacement .................................................................................... 16
................................................................................................................ 17
Page
General Information
Safety First
Page 3
General Safety
Do not allow pump, piping, or any other system
component containing water to freeze. Freezing may
damage system, leading to injury or flooding. Allowing
pump or system components to freeze will void
warranty.
Pump approved liquids only with this pump.
Periodically inspect pump and system components.
Wear safety glasses at all times when working on
pumps.
Keep work area clean, uncluttered and properly lighted;
store properly all unused tools and equipment.
Keep visitors at a safe distance from the work areas.
Stay clear of equipment and
keep shields in place while
pump is running.
Stop motor or engine before
servicing pump.
Read owner’s manual before
using equipment.
When you see
this symbol on your pump or in this manual, look
for one of the following signal words and be alert to the
potential for personal injury:
warns about hazards that cause
serious personal injury, death or major property
damage if ignored.
warns about hazards that or
cause serious personal injury, death or major property
damage if ignored.
warns about hazards that or cause
minor personal injury or property damage if ignored.
The label indicates special instructions which
are important but not related to hazards.
Keep safety labels in good condition.
Replace missing or damaged safety labels.
Use care and proper lifting equipment when
handling pump for installation. Size and weight of some
units will require hoists for safe handling.
When properly positioned, the suction and discharge
openings of the pump will be aligned with system piping.
Page 4 F00637
General Information
Transport and Storage
The
pump has been prepared for shipment at the factory
in such a way as to minimize potential damage due to
handling and transport.
The following instructions
are for the safe handling of the pump. When shipment
is received extreme care should be exercised during
unloading. Heavy parts should be skidded to the
ground if lifting equipment is not available. It is
recommended a forklift be used to unload equipment.
Bare pump: Using a nylon sling, chain, or wire rope,
hitch around both the inboard and outboard bearing
housings. Size the equipment for the load, and so the
lift angle will be less than 45° from the vertical.
Immediately upon receipt of the pump
equipment, carefully check to see that all items have
been received and are in undamaged condition.
Report any shortage or damage to the transport
company handling the shipment and to the equipment
manufacturer, noting the extent of damage or shortage
on the freight bill and bill of lading. This should be done
at once. Do not unpack any more than required to
verify that the equipment is complete and undamaged
unless installation is to be done immediately. Do not
leave the pump unit or any accessories exposed to
weather or construction hazards, which may cause
damage to the equipment.
The pump and equipment,
as shipped, have adequate protection for short-term
(up to three months) storage in a covered, dry, and
ventilated location prior to installation.
If the equipment will be
subject to extended (more than three months) storage
prior to installation and commissioning, then the
standard warranty of the equipment may be affected.
Periodic rotation of the pump and driver shaft is
recommended during long-term storage (consult the
equipment manufacturer as to the frequency), and
inspection of the equipment by a factory representative
prior to start-up is normally required to ensure
equipment integrity and compliance with warranty
requirements.
• Remove and discard stuffing-box packing. Fill the
stuffing box with a crusting grease (Rust-Ban 326
or equal), then pack the end of the stuffing box with
rolled vapor phase inhibitor paper and seal with
weatherproof tape.
• Dry pump internals and spray the liquid end with a
water-displacement rust inhibitor (Rust-Ban 392,
Crown 6011, Arma 245, Ensis fluid 254, Sunkote
1303, or equal).
• Enclose vapor inhibitor in pump internals (Shell VPI
260 or equal).
• Apply a film of compatible lube oil over the water-
displacement rust preventative. A compatible lube oil
is Rust-Ban 632 or equivalent.
• After the pump has been thoroughly drained, cover
the pump suction and discharge flanges with full
gasket material and blank off these openings with
metal blank flanges and a minimum of four full-
sized bolts. Cover the pump stuffing-box opening
with a nonhygroscopic tape. If packed-type pump,
the packing gland may be left on the pump shaft,
but should be wired or otherwise securely fastened
in position. If mechanical seals have been used,
then the annular opening between seal plate and
shaft should be closed by a nonhygroscopic tape to
exclude airborne dust.
• All exposed machined surfaces should be thoroughly
coated with a firm film rust-preventative material
(Rust-Ban 373, CRC-SP-350, Enis fluid 264, Protec
612801, or equal) that is readily removable with a
petroleum distillate product.
• All exposed painted surfaces should be dry, clean,
and free of grease and other contaminates.
• The pump should be covered with a weather-
resistant cover of waterproof paper or plastic to
prohibit the buildup of dirt and dust accumulations.
• The pump should be inspected at regular periods
during storage, and the pump shaft should be rotated
by hand at intervals of approximately four to six
weeks.
• To place the pump in operation, all protective
coverings and coatings should be properly removed.
If packed type pump, then repack with the proper
number of packing rings in each stuffing box in
accordance with normal repair and maintenance
instructions furnished with the pump.
• Rotate pump shaft several revolutions at least once
per week to coat the bearing with lubricant and
to retard oxidation and corrosion, flat spots, and
staining.
• Long-term storage procedures should be followed as
detailed by the OEM when the start-up of equipment
is made over three months from the date of shipment
from the factory.
F00637 Page 5
General Information
Pump Nomenclature
6577 0712
MODEL S.N. OR DATE
IMPELLER DIA.
WWW.MEGACORPINC.COM
B.M.
800-345-8889
M15806
B86085
G100894
M4B
13-1/2”
MODEL S.N. OR DATE
IMPELLER DIA.
WWW.MEGACORPINC.COM
B.M.
6578-0712
Record your nameplate data here.
800-345-8889 M15806
Locate the nameplate on the pump, plate is normally
on the bearing bracket. Information found on this plate
is shown below. To ensure correct parts are received,
provide all nameplate data when ordering. The
number is the most important. Write
your nameplate information on the blank nameplate
below for future reference as nameplates can become
worn or lost.
Illustration on the following page show typical com-
ponents used in the assembly of bearing frame mounted
centrifugal pumps. Refer to this drawing when ordering
any replacement parts.
SAMPLE ONLY
Page 6
Pump Nomenclature
Parts Breakdown
• Drawing is representative of a typical bearing frame
pump. Parts on some models may vary slightly.
Bearing Frame Mount/Packing Seal
O-Ring
Impeller Washer
Hex Capscrew
Lock External Tooth Washer
Casing
Wear
Ring
Casing
O-Ring
Impeller
Wear
Ring
Seal Plate
Frame
Mount
Bracket
Grease
Fitting
Hex
Capscrew
Pipe Plug
Stud
Hex Nut
Shaft Sleeve
Bearing Cap Motor Bracket
Oil Seal
Ball Bearing
Roller Bearing
Water Slinger
Thrust Ring
Grease Fitting
External Retaining Ring
Shaft
Slotted Split Gland
Packing Rings
Metallic Ring
6579-0712
Oil
Seal
Hex
Capscrew
Page 7
Parts Breakdown
Bearing Frame Mount/Mechanical Seal
Pump Nomenclature
• Drawing is representative of a typical bearing frame
pump. Parts on some models may vary slightly.
6580 0712
Casing
Wear
Ring
Casing
O-Ring
Impeller
Wear
Ring
Seal Plate
Frame
Mount
Bracket
Grease
Fitting
Hex
Capscrew
Pipe Plug
Oil
Seal
Hex
Capscrew
Shaft Sleeve
Pipe Plug
Roller Bearing
Shaft
Bearing Cap Motor Bracket
Oil Seal
Thrust Ring
Grease Fitting
O-Ring
Ball Bearing
External Retaining Ring
Water Slinger
Shaft Seal
External
Retaining
Ring
Impeller Washer
Hex Capscrew
Lock External Tooth Washer
Page 8
General Information
Start-up
C
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c
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w
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i
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n
12
6
39
6588 0712
System piping should be at least one commercial pipe
size larger than pump connections and flow velocity
should not exceed eight (8) feet per second. Suction and
discharge pipes must be naturally aligned with pump
connections.
NOTICEMisalignment of piping with pump case or
excessive pipe strain can cause distortion of pump
components resulting in rubbing, breakage and reduced
pump life.
Insure that piping is supported in a manner that prevents
the exertion of force on pump connections. This can be
checked by the following procedure. With the pump shut
down, remove pipe flange bolts. If the mating flanges
come apart or shift, misalignment is present and causing
pressure on the connections. Adjust pipe supports until
flanges mate without any force. This procedure can be
done throughout piping system.
LIQUID END of pump requires no lubrication. Wear
rings, packing rings, and models using a mechanical
shaft seal are lubricated by the liquid being pumped. Do
not run dry!
General maintenance - add approximately 5.5 ounces
(150cc) of a lithium-based NGLI No. 2 extra pressure ball
bearing grease to the outboard bearing and 2.5 ounces
(75 cc) to the inboard bearing every 90 days.
NOTICE Excess grease will cause bearings to run hot.
The following are factory approved brands of grease for
use with Mega Pumps: Alvania EP2, Shell Oil;
Mobilith AW2, Mobil Oil, Ronex MP, Exxon, Litholine
EP2, Atlantic Richfield; and Amolith EP2, Amoco.
Pump priming is the displacement of air with water
in the pump and suction piping. Pump
completely filled with water when operating.
Hydraulic balanced pumps operate with a very low
positive pressure across the stuffing box, permitting a
much looser fit of the packing rings around the shaft
sleeve to control the loss of water from the pump
through the stuffing box.
• Open air vent (or pipe plug) in the highest tapped
opening in pump case.
• Open inlet isolation valve, allowing water to fill the
pump completely and force all air out through vent.
• Rotate shaft slowly allowing any air trapped in
impeller to escape.
• Close vent opening when water without air emerges.
Before pump is put into operation, rotational direction
must be checked to assure proper performance of
pump. Refer to .
NOTICE. Running pump without
water will overheat pump and damage internal parts.
Always make sure pump is primed prior to start-up.
NOTICE Refer to maintenance section if pump has
packing for adjustment prior to start-up.
Set discharge valve to minimum flow. Turn on power to
pump. Slowly open discharge valve until desired flow
rate is achieved.
Starting new pump. Before starting pump for the first
time, loosen gland nuts and retighten finger tight.
Proceed with pump start-up procedure. Allow packing to
leak liberally for a few moments. Then tighten gland nuts
one complete turn each until leakage is reduced to 40 to
60 drops per minute.
Pump will stop automatically when the flow to the driver
motor stops. If hydraulic shock occurs, the check valve
closure rate may need adjustment or additional controls
may be needed.
Page 9
General Information
Start-up
When the pump and system operation have been
stabilized, verify that pump unit is operating properly.
Observe the following:
All rotating machines can be expected to
produce some vibration, however, excessive vibration
can reduce the life of the unit. If the vibration seems
excessive, discontinue operation, determine cause of
the excessive vibration and correct.
When the unit is operating under load, listen
closely for unusual sounds that might indicate that the
unit is in distress. Determine the cause and correct.
During operation, heat
is dissipated from the pump and the driver. After a short
period of time, the surface of the pump bracket will be
quite warm (as high as 150°F / 65°C), which is normal.
If the surface temperature of the pump bracket or driver
is in excess of 180°F (82°C), discontinue operation,
determine cause of the excessive temperature rise and
correct. Bearings will run hotter for a brief run-in period
after packing which is normal. However, worn bearings
will cause excessive temperatures and need to be
replaced. The pump unit is cooled by the water flowing
through it, and will normally be at the temperature of the
water being pumped.
After a short period of operation, verify
that the stuffing box area and gland are not hot.
If heating is detected, loosen the gland nuts evenly until
water is just running out of stuffing box in a
form (approximately 40-60 drops per minute). Water
must not be streaming or spraying out.
Verify cool operation periodically. Adjust gland nuts
as necessary for lubrication and cooling of the
packing. If packing has been tightened to the limit of the
packing gland travel, additional packing is necessary.
Provide drain valves to empty
system, including pump case, to prevent freezing
damage.
If possible, provide shelter for unit to protect
from weather. Allow adequate space around pump unit
for service. When effectively sheltered a small amount
of heat will keep temperature above freezing. Provide
adequate ventilation for unit when running.
When the temperature of metal parts
is below dew point and the surrounding air is moist,
water will condense on the metal surfaces and can
cause corrosion damage. In severe situations, a space
heater can be considered to warm the unit.
Periodically check the output of the pump. If
performance is noticeably reduced, refer to Trouble-
shooting section.
Refer to Packing Ring Replacement section.
Adjustment or maintenance is normally not required.
The seal is enclosed within the pump and is self
adjusting. The seal is cooled and lubricated by the liquid
being pumped. Consult factory for proper replacement
procedure.
Page 10
Inspect all system piping connections for leakage
or possible misalignment.
Complete any lubrication requirements as
dictated by pump and driver owner’s manual.
Inspect packing or mechanical seal for possible
replacement. Examine shaft sleeve, if present, for
wear and replace if necessary.
Check pump and driver bearings for signs of
wear. Repack or replace as necessary.
_______________________________________
Inspect all system piping connections for leakage
or possible misalignment.
Complete any lubrication requirements as
dictated by pump and driver owner’s manual.
Inspect packing or mechanical seal for possible
replacement. Examine shaft sleeve, if present, for
wear and replace if necessary.
Check pump and driver bearings from signs of
wear. Repack or replace as necessary.
_______________________________________
Inspect all system piping connections for leakage
or possible misalignment.
Complete any lubrication requirements as
dictated by pump and driver owner’s manual.
Inspect packing or mechanical seal for possible
replacement. Examine shaft sleeve, if present, for
wear and replace if necessary.
Check pump and driver bearings for signs of
wear. Repack or replace as necessary.
_______________________________________
Inspect all system piping connections for leakage
or possible misalignment.
Complete any lubrication requirements as
dictated by pump and driver owner’s manual.
Inspect packing or mechanical seal for possible
replacement. Examine shaft sleeve, if present, for
wear and replace if necessary.
Check pump and driver bearings for signs of
wear. Repack or replace as necessary.
_______________________________________
Inspect pump and entire pumping system for
signs of wear.
Inspect system valves, screens, etc.
Check pump impeller eye for clearance.
Inspect impeller, volute case, and seal chamber
for signs of excessive wear or corrosion.
Routine Inspection
Maintenance
Record
F00637 Page 11
If pump is to be out of service for an extended period of
time, such as the winter months, the following storage
procedures should be followed:
• Remove exterior dirt and grime or any substance
that may trap moisture. Exposed metal is subject to
oxidation; prime and repaint if necessary. If this is not
possible, coat with grease or heavy oil.
• Flush suction and discharge lines. Check for leaks at
this time and replace any worn gaskets.
• Remove lowest plug in pump and drain pump casing
and suction/discharge lines.
• Lubricate bearings.
• If possible, keep unit clean and dry during storage
period to guard against corrosion.
• Seal all open ports to keep out foreign objects such
as insects, rodents, dust and dirt.
• Rotate driver shaft periodically to prevent freeze-up
of internal components.
• Shelter unit from elements if possible.
• Work oil into impeller wear ring by dripping oil into
the gap while rotating by hand.
• Inject sufficient grease into the bearings to displace
old grease. (See Bearing Frame Lubrication in Start-
up section).
• Visually inspect pump.
• Rotate by hand, if any binding occurs, disassemble
and inspect.
A well maintained pumping system will extend the life
of the unit and will require fewer repairs. This means
less down time which can be very critical when constant
delivery of water is required.
A routine maintenance and inspection schedule should
be set up on a weekly, quarterly, and annual basis
with records kept of these actions. For weekly checks,
refer to general maintenance. For quarterly and annual
maintenance, refer to routine inspection check list. Copy
page as necessary for continual usage.
General Information
Maintenance
It is recommended that the following spare parts be kept
on-site as a minimum back-up to service your pump
and reduce down-time. Check your model/style against
parts breakdown; See when selecting
spares.
• Mechanical Shaft Seal
• Packing Set and Packing Hooks
• Shaft Sleeve(s)
• All O-Rings Required for One Pump
• Wear Rings
• Retaining Rings
If having a pump non-operational has severe
consequences, a back-up pump should be considered.
Otherwise, a back-up impeller, volute case, bearings
and shaft are advised.
Before disassembling
a pumping unit, it is very important to ensure that the
unit is thoroughly cleaned and there are no residual
contaminants that could cause injury or illness. The
method of cleaning pumps will vary with the design and
construction of the pump. In general, the pump needs
to be properly drained, flushed out, and any evidence
of contamination removed. Contents of the pump,
cleaning materials, and wash-down materials should
be properly disposed. In addition to thorough cleaning,
disinfecting all surfaces for protection from injury and
illness is recommended. During the decontamination
and disassembly work to the pump, workers are
required to wear protective clothing and equipment
to protect them from exposure to potentially harmful
materials.
When decontaminating a pump, it is important to use
a fluid or compound that will not damage (e.g., corrode
or swell) pump components. Often the pump materials
of construction are suitable for limited corrosive service
with pumpage liquids, such as potable water. Limited
contact time with the pump is recommended. Before
disinfection or decontamination of a pumping unit,
careful consideration must be given to the following
items: mixing concentration prior to entering the
pump, method of dosage, and pumping operation,
e.g., limiting flow, throttling, and limiting retention time.
Pump components particularly sensitive to disinfection
fluids or compounds include pump shafting, bearing
journals, and elastomeric sleeve-type bearings.
It is recommended to always contact the pump
manufacturer prior to disinfecting or decontaminating a
pump.
Page 12
Packing Ring Replacement
Maintenance
• Unfasten hardware holding packing gland in place and
slide back on shaft to expose packing rings. A split
packing gland with threaded studs is shown.
• Remove packing rings from stuffing box using two
commercially available packing hooks as shown.
• Clean shaft sleeve and packing gland.
• Inspect shaft sleeve for wear; replace if needed
(requires disassembly of pump).
• Install new packing rings in stuffing box by placing
over shaft sleeve and pushing them in as far as they
will go.
• Rotate ring joint 90 degrees when installing each ring.
• Slide packing gland into position (gland must enter
stuffing box bore) then gently and evenly tighten nuts
to force rings into place and seat. Loosen nuts to hand
tight.
• Start primed pump and allow packing to leak liberally.
• While pump is running, evenly tighten gland nuts one
complete turn at a time until leakage is reduced to
droplet form (40 to 60 drops per minute).
Shaft
Frame
Mount
Bracket
Stud
Hex Nut
Slotted Split Gland
Packing Rings
Metallic Ring
Seal Plate
w/ Wear Ring
Shaft Sleeve
6581 0712
Packing
6582 0712
Hooks
Page 13
Dress the shaft with fine emery
cloth. Wipe it clean with a rag.
Slide the new sleeve onto the
shaft for a trial fit (it should be a slip
fit). Remove it.
Use of activator will
decrease set time from 5 minutes to
2 minutes.
Sealant Use Available
Used Activator from
Saf-T-Lok®R42 Saf-T-Lok®www.saftlok.com
Saf-T-Lok®R80 Primer N Precision
Industries
Loctite®648 Loctite®7649 www.loctite.com
Fastenal
Spray activator on the area of the
shaft covered by the sleeve (rotate
the shaft for even coverage) and on
the inside of the new sleeve.
Apply adhesive around the inside
of the leading edge of the new
sleeve and in a line along the top of
the shaft where the sleeve rests. On
2-1/4” shafts, use two parallel beads
on the shaft.
Slide the new sleeve onto the
shaft. Rotate the sleeve at least
twice before butting it against the
shaft shoulder. Wipe any excess
adhesive off the shaft and sleeve.
With activator, the adhesive
will begin to set within one minute
of sleeve installation.
Once the adhesive has set
(about 2 minutes for a 7/8” shaft
up to about 5 minutes for a 2-1/2”
shaft), complete the assembly of
the pump.
Each new shaft sleeve is oversize for its corresponding
shaft, allowing it to easily slip on the shaft. Saf-T-Lok®
R42 or R80, or Loctite®648, seals the sleeve onto the
shaft. Assembly is:
A) Safer – No torch required for installation of the new
sleeve.
B) Faster – No need to heat the new sleeve or let it cool
before proceeding.
C) Easier – The sleeve will not stick or gall the shaft
during assembly.
(Using a LITTLE heat may make it easier to
remove the old sleeve.)
1. Peen the old sleeve along the shaft. BE SURE to
support the shaft!
2. Rotate the shaft 90° and repeat.
3. When the sleeve will turn on the shaft, hold the shaft,
twist and pull to remove the sleeve.
Follow the procedure outlined below.
Shaft Sleeve Installation/Replacement
Maintenance
Page 14
Impeller Replacement
Maintenance
• Remove pump casing.
• Remove O-ring and discard.
• Remove impeller locking capscrew, lockwasher,
impeller washer O-ring and discard.
• Unscrew threaded impeller.
Pumps with clockwise rotation as viewed from
the shaft (driver) end have a right-hand threaded
impeller. Pumps with counterclockwise rotation as
viewed from the shaft (driver) end have a left-hand
threaded impeller. The impeller cap screw is always
right-hand thread.
• Check the clearance between the impeller inlet wear
ring and casing wear ring. If it is more than .020”
(0.5mm) on a side, replace the casing wear ring.
• Check the clearance between the impeller hub wear
ring and seal plate wear ring. If it is more than .020”
(0.5 mm) on a side, replace the seal plate wear ring.
• If removed, reinstall seal plate into the bracket.
• Install new impeller by threading onto the shaft until it
seats solidly against the shaft shoulder, then secure
using a new impeller washer, lock washer and
capscrew with Loctite®Threadlocker Red 271™ or
equal. Torque to 50 ft-lb (68 Nm).
• Reinstall casing using a new O-ring. Apply Loctite®
Threadlocker Red 271™ or equal to the casing
capscrews. Torque to 100 ft-lb (135 Nm).
• Rotate pump to insure free rotation.
Shaft Seal
Shaft
Casing
w/ Wear Ring
Frame
Mount
Bracket
Seal Plate
w/ Wear Ring
Impeller
Casing
O-Ring
O-Ring
Shaft Sleeve
External
Retaining
Ring
6583 0712
Page 15
Mechanical Seal Maintenance/Replacement
Maintenance
Installing New Seal
1. Remove pump casing.
2. Remove O-ring and discard.
3. Remove impeller locking capscrew, lockwasher,
impeller washer O-ring and discard.
4. Unscrew threaded impeller.
Pumps with clockwise rotation as viewed from
the shaft (driver) end have a right-hand threaded
impeller. Pumps with counterclockwise rotation as
viewed from the shaft (driver) end have a left-hand
threaded impeller. The impeller cap screw is always
right-hand thread.
5. Remove the seal retaining ring and pull the rotating
part of the seal off the shaft.
6. Remove the 2 capscrews holding the seal plate in
place.
7. Pull the seal plate out until it clears the shaft,
bringing the stationary part of the seal out with it.
Tap the seal out of the seal plate and clean the seal
cavity.
8. Inspect shaft sleeve, replace if necessary.
9. Install the new stationary seal in the seal cavity.
• Apply a small amount of mineral oil to the O-ring
or cup seat of the stationary seal.
• Use the seal installation tool to press the
stationary seal into place. (See ).
• Do not damage the seal face!
10. Reinstall the seal plate. Hold in place with
2 capscrews.
• Cover all shaft threads with the seal installation
bull-nose tool to protect the seal during
installation.
• Apply a small amount of mineral oil to the inside
diameter of the rubber ring in the rotating seal and
to the outside of the shaft sleeve and the outside
of the seal assembly tool.
11. After lubricating the rotating part of the seal, slide it
onto the shaft and sleeve until it seats against the
stationary (ceramic) part using the seal installation
tool.
12. Compress the seal spring on the shaft sleeve and
reinstall the seal retaining ring.
13. Re-install impeller by threading onto the shaft until it
seats solidly against the shaft shoulder, then secure
using a new impeller washer, lock washer and
capscrew with Loctite®Threadlocker Red 271™ or
equal. Torque to 50 ft-lb (68 Nm).
• Reinstall casing using a new O-ring. Apply
Loctite®Threadlocker Red 271™ or equal the
casing capscrews. Torque to 100 ft-lb. (135 nm).
• Rotate pump to insure free rotation.
Polished Face up
Cardboard washer
(Supplied with seal)
6064 0609
Shaft Seal
Shaft
Casing
w/ Wear Ring
Frame
Mount
Bracket
Seal Plate
w/ Wear Ring
Impeller
Casing
O-Ring
O-Ring
Shaft Sleeve
External
Retaining
Ring
6585 0712
Page 16
Shaft Maintenance/Replacement
Maintenance
• Shaft assembly of bearing frame pumps should
be disassembled annually to inspect for worn
parts, cleaning, and re-greasing. More importantly,
the pump’s shaft sleeve and bearings should be
inspected for pitting. Replace worn components as
needed.
• Remove packing gland and packing arrangement, if
equipped. (Refer to packing ring replacement)
• Remove pump casing and impeller.
(Refer to impeller replacement)
• Remove seal plate and water slinger.
• Remove outer bearing cap and slide shaft assembly
from bearing bracket.
• Remove inner and outer grease seals from bearing
bracket and bearing cap and discard.
• Clean and inspect all components.
• Thoroughly steam clean or solvent wash the bearing
cavity of bracket to remove old grease and dirt. Check
surface of bracket for cracks, extreme corrosion, or
other defects.
• Install new inner and outer grease seals in the
bearing bracket and bearing cap. Lubricate with oil.
• Pack bearings with a lithium-based NLGI No. 2 extra
pressure ball bearing grease. Force enough grease
into each bearing to fill internal space between the
races.
• Coat the bearing bores of bracket and the inboard
grease seal with oil. Orient shaft assembly in the
direction shown in . Slide shaft and
bearing assembly into bearing bracket.
Slide shaft until the first bearing makes
contact with the bracket. Carefully align bearing with
the bearing bore and press or tap bearing assembly
into place.
Be sure bearing bores and bracket areas
are clean and free of contamination or early bearing
failure may occur.
• Reinstall outer bearing cap and oil seal.
• Apply Loctite®Threadlocker Red 271™ or equal
to capscrews. Torque to 50 ft-lb (68 Nm).
• Rotate pump by hand 10-12 rotations.
• Reassemble pump parts and reinstall unit to piping
system.
• To install Shaft Sleeve, refer to Shaft Sleeve/
Installation Replacement procedure.
Shaft
Sleeve
Roller Bearing
Shaft
Ball Bearing
Water Slinger
Shaft Seal
External
Retaining
Ring
6586 0712
Page 17
Troubleshooting
Maintenance
Hydraulic Drive Pump
A. Speed too low Refer to driver manufacturer’s manual.
B. Rotating and/or Refer to driver manufacturer’s manual.
reciprocating parts drag
C. Speed too high Refer to pump and driver power curves; Adjust.
D. Loose or broken parts Refer to driver manufacturer’s manual.
E. Improper adjustment Adjust per driver manufacturer’s manual.
A. Flow through pump completely or Locate and remove obstruction. Refer to repair instructions
partially obstructed for disassembly.
B. Wrong direction of rotation See manufacturer’s instructions for reversing driver.
C. Pump not primed Reprime; Inspect suction system for air leaks.
D. Internal leakage Check impeller for wear of controlled clearances (See repair instructions).
E. Loose parts Inspect. Repair.
F. Stuffing box not properly adjusted Adjust gland.
A. Pressure required by system at design Compare pump pressure and flow rate against pump characteristic curve.
flow rate exceeds pressure rating of pump Check for closed or partially closed valve in discharge piping system.
Reduce system pressure requirement. Increase pressure capability of pump.
B. Obstruction in suction piping Locate and remove obstruction.
C. Pressure rating of pump exceeds pressure Compare pump pressure and flow rate against pump characteristic curve.
requirement of system at design flow rate Inspect discharge piping system for breaks, leaks, open by-pass valves, etc.
If necessary, reduce flow rate by partially closing discharge valve.
Pump runs, but no water delivered X X X X X
Not enough water delivered X X X X X X X
Not enough pressure X X X X X X X
Excessive vibration X X X X X X X X
Abnormal noise X X X X X X X X X X
Pump stops X X X X
Overheating X X X X X X X X X
Page 18 F00637
F00637 Page 19
Table of contents
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