Graco Husky 1050e Use and care manual

Repair/Parts
Husky™ 1050e
Electric Diaphragm Pump 334189H
EN
1–Inch pumps with electric drive for fluid transfer applications. For professional use only.
Important Safety Instructions
Read all warnings and instructions in this manual and in your Husky
1050e Operation manual. Save these instructions.
For maximum operating pressures,
see the Performance Charts on pages
51–54 in the Operation manual.
See pages 6–7 for model information,
including appro als.
PROVEN QUALITY. LEADING TECHNOLOGY.
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Contents
Related Manuals ................................................ 2
Warnings ........................................................... 3
Con guration Number Matrix............................... 6
Ordering Information........................................... 8
Overview............................................................ 9
Troubleshooting.................................................. 10
Repair................................................................ 12
Pressure Relief Procedure............................ 12
Check Valve Repair ..................................... 12
Diaphragm Repair........................................ 14
Center Section Repair.................................. 17
Disconnect the Motor and Gearbox ............... 22
Replace the Compressor.............................. 23
Torque Instructions............................................. 24
Parts.................................................................. 25
Cart............................................................. 36
Kits and Accessories.................................... 39
Technical Data ................................................... 40
Related Manuals
Manual Number Title
334188 Husky 1050E Electric Double Diaphragm Pump, Operation
2334189H
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Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-speci c
risks. When these symbols appear in the body of this manual or on warning labels, refer back to these
Warnings. Product-speci c hazard symbols and warnings not covered in this section may appear throughout
the body of this manual where applicable.
WARNING
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can
cause electric shock.
• Turn off and remove power before disconnecting any cables and before servicing or installing
equipment. For cart-mounted models, unplug the power cord. For all other units, disconnect
power at the main switch.
• Connect only to grounded power source.
• All electrical wiring must be done by a quali ed electrician and comply with all local codes
and regulations.
• Wait ve minutes for capacitor discharge before opening equipment.
• For cart-mounted models, use only 3-wire extension cords.
• For cart-mounted models, ensure ground prongs are intact on any power and extension cords.
• For cart-mounted models, do not expose to rain. Store indoors.
FIRE A D EXPLOSIO HAZARD
Flammable fumes, such as solvent and paint fumes, in work area canigniteorexplode.Paint
or solvent flowing through the equipment can cause static sparking. To help prevent re and
explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and
plastic drop cloths (potential static arc).
• Ground all equipment in the work area. See Grounding instructions.
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable
fumes are present.
• Use only grounded hoses.
• Stop operation immediately if static sparking occurs or you feel a shock . Do not use
equipment until you identify and correct the problem.
• Keep a working re extinguisher in the work area.
Static charge may build up on plastic parts during cleaning and could discharge and ignite
flammable vapors. To help prevent re and explosion:
• Clean plastic parts only in well ventilated area.
• Donotcleanwithadrycloth.
• Do not operate electrostatic guns in equipment work area.
334189H 3
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Warnings
WARNING
PRESSURIZED EQUIPME T HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin
and cause serious injury.
• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before
cleaning, checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
EQUIPME T MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated
system component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request Safety Data Sheet (SDS) from distributor or retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modi cations may void agency approvals
and create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traf c areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
PRESSURIZED ALUMI UM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious
chemical reaction and equipment rupture. Failure to follow this warning can result in death,
serious injury, or property damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon
solvents or fluids containing such solvents.
• Do not use chlorine bleach.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material
supplier for compatibility.
4334189H
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Warnings
WARNING
THERMAL EXPA SIO HAZARD
Fluids subjected to heat in con ned spaces, including hoses, can create a rapid rise in pressure
due to the thermal expansion. Over-pressurization can result in equipment rupture and serious
injury.
• Openavalvetorelievethefluidexpansionduringheating.
• Replace hoses proactively at regular intervals based on your operating conditions.
PLASTIC PARTS CLEA I G SOLVE T HAZARD
Many solvents can degrade plastic parts and cause them to fail, which could cause serious
injury or property damage.
• Use only compatible water-based solvents to clean plastic structural or pressure-containing
parts.
•See Technical Data in this and all other equipment instruction manuals. Read fluid and
solvent manufacturer’s Safety Data Sheet (SDS) and recommendations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin,
inhaled, or swallowed.
• Read Safety Data Sheet (SDS) to know the speci c hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable
guidelines.
BUR HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid
severe burns:
• Do not touch hot fluid or equipment.
PERSO AL PROTECTIVE EQUIPME T
Wear appropriate protective equipment when in the work area to help prevent serious injury,
including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective
equipment includes but is not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
334189H 5
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Configuration Number Matrix
Con guration Number Matrix
Check the identi cation plate (ID) for the
Con guration Number of your pump. Use the
following matrix to de ne the components of your
pump.
Sample Configuration umber: 1050A-E,A04AA1SSBNBNPT
1050 AEA 04A A1 SS BN BN PT
Pump
Model Wetted Section
Material
Drive Center
Section
Material
Gear Box
and Motor Fluid Covers and Manifolds Seats Balls Diaphragms Manifold O-Rings
Pump Wetted Section
Material Drive Type Center Section Material Motor and Gearbox
1050 A
luminum
E
Electric
A
luminum
04A
Standard C Induction Motor
with Gearbox
C
Conductive
Polypropylene
S
Stainless Steel
04B
Brushless DC Motor with Graco
Motor Control
F
PVDF
04C
C Induction Motor, TEX✦
H
Hastelloy
04D
Explosionproof C Induction
Motor ★
P
Polypropylene
04E
NEM 56 C Gearbox ✚
S
Stainless Steel
04F
IEC 90 B5 Flange Gearbox ✚
05A
Standard C Induction Motor
with Compressor (120V)
05B
Brushless DC Motor with
Graco Motor Control and with
Compressor (120V)
06A
Standard C Induction Motor
with Compressor (240V)
06B
Brushless DC Motor with
Graco Motor Control and with
Compressor (240V)
6334189H
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Configuration Number Matrix
Fluid Covers and
Manifolds Seat Material Ball Material Diaphragm Material Manifold O-Rings
A1
luminum, npt
AC
cetal
AC
cetal
BN
Buna-N
A2
luminum, bsp
AL
luminum
BN
Buna-N
CO
Polychloroprene
Overmold
––
Models with BN,
FK, or TP seats
do not use o-rings
C1
Conductive
polypropylene,
center flange
BN
Buna-N
CR
Polychloro-
prene Standard
FK
FKM
Fluoroelastomer
PT
PTFE
C2
Conductive
polypropylene,
end flange
FK
FKM Fluoroe-
lastomer
CW
Polychloro-
prene Weighted
GE
Geolast
F1
PVDF, center
flange
GE
Geolast
FK
FKM Fluoroe-
lastomer
PO
PTFE/EPDM
Overmold
F2
PVDF, end flange
PP
Polypropylene
GE
Geolast
PT
PTFE/EPDM
2–Piece
H1
Hastelloy, npt
PV
PVDF
PT
PTFE
PS
PTFE/Santo-
prene 2–Piece
H2
Hastelloy, bsp
SP
Santoprene
SP
Santoprene
SP
Santoprene
P1
Polypropylene,
center flange
SS
316 Stainless
Steel
SS
316 Stainless
Steel
TP
TPE
P2
Polypropylene,
end flange
TP
TPE
TP
TPE
S1
Stainless steel,
npt
S2
Stainless steel,
bsp
Approvals
✦ Aluminum, conductive polypropylene,
hastelloy, and stainless steel pumps with code
04C are certi ed to: II 2 G ck Ex d IIB T3 Gb
✚ Aluminum, conductive polypropylene,
hastelloy, and stainless steel pumps with code
04E or 04F are certi ed to: II 2 G ck IIB T3 Gb
★ Motors coded 04D are certi ed to: Class1, Zone 1, AEx d IIB T3 0°C<Ta<40°C
All Models (except 04D,05A,and05B)are
certi ed to:
334189H 7
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Ordering Information
Ordering Information
To Find Your Nearest Distributor
1. Visit www.graco.com.
2. Click on Where to Buy and use the Distributor Locator.
To Specify the Configuration of a New Pump
Please call your distributor.
OR
Use the Online Diaphragm Pump Selector Tool at www.graco.com. Go to the Process Equipment Page.
To Order Rep acement Parts
Please call your distributor.
8334189H
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Overview
Overview
The Husky 1050e product line offers electric-powered
diaphragm pumps in a wide range of models. Use the
selector tool at www.graco.com to con gure a pump
to meet your needs. This section shows the basic
structure of available models. Fluid section options
are too numerous to include. The many manifold,
seat, ball, and diaphragm options are available on a
wide variety of these models.
Center
Section Motor
Type Controller Gearbox Compressor Approval
Options Cart
Yes-120V None No*
Yes-240V No*
Yes, part of
motor No CE No*
IEC No ATEX and CE No*
AC
VFD — not included.
VFD Kits 16K911
(240V) and 16K912
(480V) are available.
NEMA No Explosionproof No*
Yes-120V None Yes
Yes-240V Yes
Brush-
less DC Graco Motor Control — included NEMA
No
CE
No*
NEMA No No*
Aluminum or
Stainless
Steel
None None IEC No CE No*
* Cart Mounting Kit 24Y543 is available.
Key Points:
• Pumps are available with an AC or Brushless
DC (BLDC) motor, or with just a gearbox (for
applications where a motor already is available).
• Graco recommends the use of a motor soft
starter or a VFD (PN 16K911 or 16K912) in the
electrical circuit for all installations. See the
motor manufacturer’s recommendations for proper
installation when using either of these components.
In all cases, make sure all products are installed in
accordance with local codes and regulations.
• BLDC motors are controlled by the Graco Motor
Control that is supplied with the pump.
• The standard AC motor (not ATEX or
Explosionproof) and the BLDC motor are available
in models without a compressor, with a 120V
compressor, or with a 240V compressor.
• The BLDC motor is available in models that
are cart mounted. Cart Mounting Kit 24Y543 is
available for other models.
334189H 9
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Int'l: +001 267 404 2910

Troubleshooting
Troubleshooting
•FollowthePressure Relief Procedure, page 12,
before checking or servicing the equipment. • Check all possible problems and causes before disassembly.
See the Operation Manual (334188) for troubleshooting or error information on the Graco Motor Control.
Problem Cause Solution
Pump is running too fast, causing
cavitation before prime. Slow down the motor controller (VFD or Graco Motor Control)
Center section has no air pressure,
or air pressure is too low. Apply air pressure to center section
per your application requirements.
Check valve ball is severely worn or
wedged in seat or manifold. Replace the ball and seat.
Thepumpha
s insuf cient suction
pressure. Increase the suction pressure. See the Operation manual.
Seat is severely worn. Replace the ball and seat.
Outlet or inlet is restricted. Remove therestriction.
Inlet ttings or manifolds are loose. Tighten.
Pump cycles but will not prime
and/or pump.
Manifold o-rings are damaged. Replace o-rings.
The center section is excessively
hot. The drive shaft is broken. Replace.
Check valve balls, seats, or o-rings
are worn. Replace.
Manifold screws or fluid cover
screws are loose. Tighten.
Pumpfailstoholdfluidpressureat
stall.
Diaphragm shaft bolt is loose Tighten.
Motor or controller is wired
improperly. Wire per manual.Pump will not cycle.
The leak detector (if installed) has
tripped. Check diaphragm for rupture or incorrect installation. Repair or
replace.
The motor is operating, but the
pump will not cycle. The jaw coupling between the motor and gearbox is not connected
properly.
Check the connection.
Suction line is clogged. Inspect; clear.
Check balls are sticky or leaking . Clean or replace.
Pump flow rate is erratic.
Diaphragm (or backup) ruptured. Replace.
Pump makes unusual noises. Pump is operating near or at stall
pressure. Adjust air pressure or slow the pump speed.
10 334189H
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Troubleshooting
Problem Cause Solution
A tting is loose. Tighten. Inspect thread sealant.
Loose or damaged o-rings or shaft
seal. Replace.
Air consumption is higher than
expected.
Diaphragm (or backup) ruptured. Replace.
Suction line is loose. Tighten.
Diaphragm (or backup) ruptured. Replace.
Loose manifolds, damaged seats or
o-rings. Tighten manifold bolts or replace seats or o-rings.
Air bubbles in fluid.
Loose diaphragm shaft bolt. Tighten.
Loose manifold screws or fluid cover
screws. Tighten.
Pump leaks fluid externally from
joints.
Manifold o-rings worn out. Replace o-rings.
A GFCI has tripped. Remove the controller from the
GFCI circuit.
Supply power is poor. Determine and x the source of the
power problem.
The controller faults or shuts down.
Operational parameters are
exceeded. See Operation manual for event codes and controller
troubleshooting.
OTE: For problems with a Variable Frequency Device (VFD), see your VFD manual. For problems with the
Graco Motor Control, see your 1050e Operation Manual.
334189H 11
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Repair
Repair
Pressure Re ief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure
is relieved manually. To help prevent serious
injury from pressurized fluid, such as splashing
in the eyes or on skin, follow the Pressure Relief
Procedure when you stop pumping and before you
clean, check, or service the equipment.
OTE: For split manifold units, perform pressure
relief procedure for both sides of the pump.
1. Remove power from the system.
2. Open the dispensing valve, if used.
3. Openthefluiddrainvalve(L)torelievefluid
pressure. Have a container ready to catch the
drainage.
4. Close the pump air valve.
5. Units with a compressor: Cyclethevalveto
bleed any remaining air.
Check Va ve Repair
OTE: Kits are available for new check valve balls
and seats in a range of materials. O-ring and fastener
kits also are available.
OTE: To ensure proper seating of the check balls,
always replace the seats when replacing the balls.
Also, replace the o-rings every time the manifold is
removed.
Disasse ble the Check Valve
1. Follow the Pressure Relief Procedure, page 12.
Remove power from the motor. Disconnect all
hoses.
2. OTE for plastic pumps: Use hand tools until
thread-locking adhesive patch releases.
3. Usea10mm(M8)socketwrenchtoremovethe
manifold fasteners (5) and nuts (42; used only on
stainless steel models), then remove the outlet
manifold (3).
4. Remove the o-rings (8) if present, seats (6), and
balls (7).
5. Repeat for the inlet manifold (4), o-rings (8) if
present, seats (6), and balls (7).
To continue disassembly, see
Disassemble the Diaphragms, page 14.
Reasse ble the Check Valve
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all
notes in the illustration. Put the inlet manifold on
rst. Be sure the ball checks (6–8) and manifolds
(3, 4) are assembled exactly as shown. The
arrows (A) on the fluid covers (2) must point
toward the outlet manifold (3).
12 334189H
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Repair
Figure 1 Check valve assembly, aluminum
model shown
1
Apply medium-strength (blue) thread locker. Torque to 90 in-lb (10.2 N·m). Follow torque
sequence. See Torque Instructions, page 24.
2
Arrow (A) must point toward outlet manifold
3
Not used on some models.
4
Stainless steel models include nuts (42).
334189H 13
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Repair
Diaphragm Repair
Disasse ble the Diaphrag s
OTE: Diaphragm kits are available in a range of
materials and styles. See Parts section.
1. Follow the Pressure Relief Procedure, page 12.
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds and disassemble
the ball check valves as explained in
Check Valve Repair, page 12.
3. Use a 10 mm socket wrench to remove the bolts
(5) from the fluid covers, then pull the fluid covers
offofthepump.
TIP: On stainless steel pumps, remove the nuts
(42) so they do not fall out and get lost.
4. To remove the diaphragms, the piston must
be moved fully to one side. If the pump is not
attached to the motor, turn the shaft by hand to
move the piston. If the pump is still attached to
the motor, follow the directions for your type of
motor:
a. AC Models: Loosen the screws and remove
the fan cover. Turn the fan by hand to rotate
the shaft clockwise to shift the piston to one
side.
b. BLDC Models: Remove the plug (124) and
o-ring (127). Use a 10 mm socket to rotate
the shaft clockwise to shift the piston to one
side. Socket should move easily [no more
than 1.7 N•m (15 in-lb) of torque]. If more
torque is required, stop. Remove the motor.
See Center Section Repair, page 17.
5. Overmolded Diaphragms (CO and PO models)
a. Hold a 16 mm wrench on the wrench flats
of the exposed piston shaft. The diaphragm
(12) will screw off by hand. Remove the air
side diaphragm plate (11).
b. Rotate the drive shaft to move the piston
fully to one side. See instructions in step 4.
Repeat step 5a.
6. All Other Diaphragms
a. Metal Pumps: Holda16mmwrenchonthe
wrench flats of the exposed piston shaft. Use
another wrench (same size) on the shaft bolt
(13) to remove it. Then remove all parts of
the diaphragm assembly.
Plastic Pumps: Holda16mmwrenchonthe
wrench flats of the exposed piston shaft. Use
a 1–1/4 socket or box end wrench on the hex
ofthefluidsidediaphragmplatetoremove
it. Then remove all parts of the diaphragm
assembly.
b. Rotate the drive shaft to move the piston
fully to one side. See instructions in step 4.
Repeat step 6a.
7. To continue with disassembly, see
Disassemble the Center Section, page 17.
14 334189H
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Repair
Reasse ble the Diaphrag s
Follow all notes in the illustrations on page 16. These
notes contain important information.
NOTICE
After reassembly, allow the thread locker to cure
for 12 hours, or per manufacturer’s instructions,
prior to operating the pump. Damage to the pump
will occur if the diaphragm shaft bolt loosens.
TIP: If you are also repairing or servicing the
center section (drive shaft, piston, etc.), see
Center Section Repair, page 17, before you put the
diaphragms back on.
1. Clean all parts and inspect for wear or damage.
Replace parts as needed. Be sure the center
section is clean and dry.
2. Overmolded Diaphragms (CO and PO)
a. If a diaphragm setscrew comes loose or
is replaced, apply permanent (red) thread
locker to diaphragm side threads. Screw into
diaphragm until tight.
b. Assemble the air side plate (10) onto the
diaphragm. The rounded side of the plate
must face the diaphragm.
c. Clean the female threads of the piston
shaftwithawirebrushdippedinsolventto
remove any residual thread locker. Apply
thread-locking primer and allow it to dry.
d. Thoroughly clean, then apply
medium-strength (blue) thread locker
to the threads of the diaphragm assembly.
e. Hold a 16 mm wrench on the wrench flats of
the piston shaft. Screw the assembly into the
shaft as tight as possible by hand.
TIP: Insert a fluid cover bolt into the
center section. Brace the wrench
against a bolt and use two hands to
tighten the diaphragm. See illustration in
Disassemble the Diaphragms, page 14.
f. Rotate the drive shaft to move the piston fully
to one side. See instructions in step 4 of
Disassemble the Diaphragms, page 14.
g. Repeat to install the other diaphragm
assembly.
3. All Other Diaphragms-Metal Pumps
a. Thoroughly clean or replace the piston shaft
bolt (13). Install the o-ring (34).
b. Assemble the fluid side plate (9), the
diaphragm (11), the backup diaphragm (12,
if present), and the air side diaphragm plate
(10) on the bolt exactly as shown.
c. Clean the female threads of the piston
shaftwithawirebrushdippedinsolventto
remove any residual thread locker. Apply
thread-locking primer and allow it to dry.
d. Apply medium-strength (blue) thread locker
to the threads of the bolt.
e. Holda16mmwrenchonthewrenchflats
of the piston shaft. Screw the bolt onto the
shaft and torque to 20–25 ft-lb (27–34 N•m).
f. Rotate the drive shaft to move the piston fully
to one side. See instructions in step 4 of
Disassemble the Diaphragms, page 14.
g. Repeat to install the other diaphragm
assembly.
4. All Other Diaphragms-Plastic Pumps
a. Thoroughly clean the threads, or replace the
entire fluid side plate (9).
b. Assemble the diaphragm (11), the backup
diaphragm (12, if present), and the air side
diaphragm plate (10) on the fluid side plate
(9) exactly as shown.
c. Clean the female threads of the piston
shaftwithawirebrushdippedinsolventto
remove any residual thread locker. Apply
thread-locking primer and allow it to dry.
d. Apply medium-strength (blue) thread locker
to the screw threads on the fluid side plate
(9).
e. Holda16mmwrenchonthewrenchflatsof
the piston shaft. Screw the assembly into the
shaft and torque to 20–25 ft-lb (27–34 N•m).
334189H 15
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Repair
f. Rotate the drive shaft to move the piston fully
to one side. See instructions in step 4 of
Disassemble the Diaphragms, page 14.
g. Repeat for the other diaphragm assembly.
5. Attach the fluid covers. The arrow on each fluid
cover must point toward the outlet manifold.
Apply medium-strength (blue) thread locker to the
bolt threads. See Torque Instructions, page 24,
to tighten.
6. Reassemble the check valves and manifolds.
See Reassemble the Check Valve, page 12.
1
Rounded side faces diaphragm.
2–Piece (PS or PT) Models
2
Apply medium-strength (blue) thread
locker to the threads.
3
AIR SIDE markings on diaphragm must
face the center housing.
4
If the screw comes loose or is replaced,
apply permanent (red) thread locker
to diaphragm side threads. Apply
medium-strength (blue) thread locker to
shaft side threads.
5
Torque to 20–25 ft-lb (27–34 N•m) at
100 rpm maximum.
6
Apply primer to the female threads.
Allow to dry.
Overmolded (PO and CO) Models Standard (TP,SP,B ,FK,and GE) Models
NOTICE
After reassembly, allow the thread locker
to cure for 12 hours, or per manufacturer’s
instructions, prior to operating the pump.
Damage to the pump will occur if the diaphragm
shaft bolt loosens.
16 334189H
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Repair
Center Section Repair
Disasse ble the Center Section
See the illustrations on page 19.
1. Follow the Pressure Relief Procedure, page 12.
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds and
check valve parts as directed in
Disassemble the Check Valve, page 12.
3. Remove the fluid covers and
diaphragms as directed in
Disassemble the Diaphragms, page 14.
TIP: Clamp the gear box bracket (15) to the
bench. Leave the pump connected to the motor.
4. Use a 5 mm hex wrench to remove 4 bolts (117).
Pull the pump off of the alignment housing (116).
TIP: It may be necessary to tap the pump with a
rubber mallet to disengage the coupler.
5. Use a 5/16 hex wrench to remove the plug (124).
Usea30mmsocketwrenchtoremovethe
bearing bolt (106) and the o-ring (108) from the
top.
6. Turn the shaft so the groove on the shaft is at the
top, in line with the alignment markings.
7. Usea3/4–16bolttopushoutthedriveshaft
assembly (112). You can also use the bearing
bolt (106), but remove the bearing (107) rst. Be
surethatthegrooveonthedriveshaftremains
aligned with the markings in the center section.
NOTICE
Proper alignment is essential. Do not apply
more than about 10 in-lb (1.1 N•m) of torque.
Excessive torque could strip the housing
thread. If you encounter resistance, check
alignment or contact your distributor.
8. The shaft coupler (113) might come out with
the drive shaft assembly. If not, reach into the
alignment housing (116) and remove the shaft
coupler (113).
9. Remove the seal cartridge (110), the o-ring (109)
and the radial seal (111) with o-ring (111a) from
the drive shaft assembly.
10. Slide the piston assembly (102) out of the center.
11. Leave the gearbox coupler (114) attached to the
gearbox shaft (118) unless it is damaged. If you
need to remove it, rst remove the screws (128)
and the access cover (126) on the alignment
housing. Turn the gearbox coupler until you have
access to screw (115) on the coupler (114). Use
an 8 mm hex wrench to remove the screw (115),
then remove the gearbox coupler (114).
OTE: Do not remove the alignment housing
(116) from the gearbox unless it is damaged.
334189H 17
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Fax: [phone]
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910

Repair
Reasse ble the Center Section
1. Clean and dry the center housing (101), the
center of the piston (102) and the drive shaft
(112).
2. Inspect the piston for excessive wear and replace
if needed. Grease the piston as shown and
install it in the center section with the groove on
the top, in line with the alignment markings in the
center section.
3. Install the o-ring (108) and the bearing bolt (106).
Apply medium-strength (blue) thread locker and
torque the bolt to 15–25 ft-lb (20–34 N•m). Be
sure that the bearing (107) is in the groove on
the piston, as shown. Be sure that the piston
moves freely.
4. Be sure the sealing surface of the drive shaft
(112) is clean. Install the seal cartridge (110†)
and the radial seal (111†) on the drive shaft. Be
sure the o-ring (111a†) is on the radial seal. The
lips on the radial seal (111†) must face
I toward
the center.
5. Install o-ring (109†).
6. Apply anti-seize lubricant on the mating edges of
thedriveshaft,asshownintheillustration,page
19.
7. Center the piston in the housing and install
the drive shaft assembly (112) into the center
housing (101) with the groove facing up.
8. Inspect the shaft coupler (113) for wear and
replace if needed. Install on the drive shaft.
9. If removed, install the gearbox coupler (114) in
the alignment housing (116) until the coupler
seats securely on the shaft. Apply medium
strength thread locker and install the screw (115).
Torque to 35–45 ft-lb (47–61 N•m). Then install
the access cover (126). Torque the screws (128)
to 10–20 in-lb (1–2 N•m).
10. Be sure the gearbox coupler (114) is aligned
properly. Turn by hand if needed. Connect the
pump to the gearbox assembly, engaging the
couplers.
11. Apply medium-strength (blue) thread locker and
install the housing screws (117). Tighten about
5turnsatatime,inacrisscrosspattern,tofully
engage the coupler. Torque to 130–160 in-lb
(15–18 N•m).
12. Be sure o-ring (127) is on the plug (124). Install
the plug and torque to 15–25 ft-lb (20–34 N•m).
13. See Reassemble the Diaphragms, page 15,and
Reassemble the Check Valve, page 12.
18 334189H
Tel: [phone]
Fax: [phone]
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910

Repair
1
Apply medium-strength (blue) thread
locker to threads.
2
Torque to 15–25 ft-lb (20–34 N•m).
3
Lips must face I toward the center.
4
Apply anti-seize lubricant liberally on
the radial surfaces of the drive shaft
assembly.
5
Install the drive shaft assembly with
the groove facing up.
6
Tighten screws in a crisscross
pattern, 5 turns at a time, to engage
the coupler evenly. Torque to
130–160 in-lb (15–18 N•m).
7
Apply lubricant to inner mating
surface.
334189H 19
Tel: [phone]
Fax: [phone]
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910

Repair
Replace Center Bearing
OTE: Follow this procedure only if you suspect that
the center bearing is damaged. It is not necessary to
replace the bearing for normal pump service. You will
need Center Section Repair Tool Kit 24Y627. You
also will need Bearing Puller Kit 17J718. The tool (A)
was designed to work with this bearing puller.
1. Follow all steps in
Disassemble the Center Section, page 17.
2. Clamp the center housing (101) in a vise, with
one of the bushings facing up.
3. Place the repair tool (A) on the housing with the
grooved side down.
4. Remove the bushing (C). Use the upper holes
on the medium-sized jaw, and the inner holes
on the puller. Be sure that the jaws engage the
bottom rim of the bushing. When one bushing
is out, turn the housing over and repeat for the
other bushing.
5. Place the center housing (101) in the vise with
thebearing(D)sideonthebottom.
6. Place the repair tool (A) on the housing with the
stepped side down.
7. Remove the bearing (D). Use the lower holes on
the medium-sized jaw, and the outer holes on
the puller.
8. Useanarborpresstoinstallthenewbearing(D)
into the center housing (101). Press the bearing
to the shoulder in the center housing.
20 334189H
Tel: [phone]
Fax: [phone]
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910