Graco E-Flo Y31 Series User manual

3A7826A
EN
Instructions
E-Flo® DCi Sealed
2-Ball Pumps
Electric drive piston pumps for high volume paint circulation applications. For professional
use only
See page 4 for model description
and page 36 for maximum
working pressure.
Important Safety Instructions
Read all warnings and instructions in this
manual and in the Related Manuals
before using the equipment. Save all
instructions.

2 3A7826A
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Hazardous Location Cabling and Conduit
Requirements . . . . . . . . . . . . . . . . . . . . . . . . 9
Power Requirements . . . . . . . . . . . . . . . . . . . . . . 9
Location Requirements . . . . . . . . . . . . . . . . . . . . 9
Mount the Pump . . . . . . . . . . . . . . . . . . . . . . . . . 9
Required System Accessories . . . . . . . . . . . . . . 10
Required Fluid Line Accessories . . . . . . . . . . . . 10
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connect Supply Wiring . . . . . . . . . . . . . . . . . . . 11
Install the Fill Cap. . . . . . . . . . . . . . . . . . . . . . . . 12
Flush Before Using the Equipment . . . . . . . . . . 12
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 13
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Preventive Maintenance Schedule . . . . . . . . . . . 14
Flushing Procedure . . . . . . . . . . . . . . . . . . . . . . 14
Change the Oil . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Check Oil Level . . . . . . . . . . . . . . . . . . . . . . . . . 14
Add Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Prepare Equipment for Service . . . . . . . . . . . . . 17
Disconnect the Pump Lower . . . . . . . . . . . . . . . 17
Reconnect the Lower and Motor . . . . . . . . . . . . 18
Pump Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Performance Charts . . . . . . . . . . . . . . . . . . . . . . . . 24
Mounting Hole Patterns . . . . . . . . . . . . . . . . . . . . . 34
Mounting Bracket Pattern . . . . . . . . . . . . . . . . . 34
Floor Stand Mounting Pattern . . . . . . . . . . . . . . 35
Technical Specifications . . . . . . . . . . . . . . . . . . . . 36
California Proposition 65 . . . . . . . . . . . . . . . . . . . . 39
Graco Standard Warranty. . . . . . . . . . . . . . . . . . . . 40

3A7826A 3
Related Manuals
Manual
No. Description Referenced Equipment
3A8352 E-Flo® DCi Motor In stallatio n and O p eratio n Manual Motor ★
311717 Carbon Steel 1000 cc Lower, Instructions/Parts
Lower ★
311762 Xtreme® Lowers, Repair/Parts Manual
311825 Dura-Flo® Lowers, Instructions/Parts Manual
311827 Dura-Flo® Lowers, Repair/Parts Manual
311619 Pump Mounting Kits Instructions Pump Mount
3A8471 DCi Link Control Module Control Module
★ Find your specific motor and lower model in the Pump Matrix on page 19.

Models
4 3A7826A
Models
The part number for your equipment is printed on the equipment identification label. The part number consists for
six alphanumeric digits which are based on pump configuration as shown in the following table. The full pump
model numbers and associated motor and lower model numbers are listed in the Pump Matrix on page 19. For
motor and lower repair manuals, see Related Manuals on page 3.
First Digit Second and Third
Digit Fourth Digit Fifth Digit Sixth Digit
Intelligent Horsepower and
Lower Size
Motor Controls, Motor
Type, and Motor Agency
Approvals‡
Lower Type Mounting
Type
Y:
Intelligent
31: 2 HP, 145 cc
24: 2 HP, 180 cc
21: 2 HP, 220 cc
16: 2 HP, 290 cc
46: 3 HP, 145 cc
40: 3 HP, 180 cc
30: 3 HP, 220 cc
25: 3 HP, 290 cc
15: 3 HP, 430 cc
12: 3 HP, 580 cc
06: 3 HP, 1000 cc
70: 5 HP, 180 cc
60: 5 HP, 220 cc
57: 5 HP, 220 cc
45: 5 HP, 290 cc
32: 5 HP, 430 cc
23: 5 HP, 580 cc
10: 5 HP, 1000 cc
B: Basic 480 V
D: Basic 480 V - future
model
A: 3 UHMW/2 PTFE, Stainless
B: 3 UHMW/2 Tuffstack, Stainless
D: 3 PTFE/2 Leather, Carbon Steel
E: 4 Leather/1 PTFE, Stainless
G: PTFE /PTFE, Stainless
H: PTFE/Leather, Stainless
K: UHMW/Leather, Carbon Steel
L: 3 UHMWPE/2 Leather, SST
M: 4 Leather/3 UHMWPE, Stainless
S: 2 PTFE/3 UHMWPE, Stainless
1: 3 Xtreme/2 Leather, Carbon Steel
0: No Stand
1: Stand
2: Wall Bracket
‡ Motor approvals are listed in the E-Flo DCi motor manual. See Related Manuals, page 3.

Warnings
3A7826A 5
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-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
DANGER
SEVERE ELECTRIC SHOCK HAZARD
This equipment is powered by more than 240V. Contact with this voltage will cause death or serious
injury.
• Turn off and disconnect the power at the main switch before disconnecting any cables and before
servicing equipment.
• This equipment must be grounded. Connect only to a grounded power source.
• All electrical wiring must be done by a qualified electrician and comply with all local codes and
regulations.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or
solvent flowing through the equipment can cause static sparking. To help prevent fire 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 sparking).
• 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.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static or conductive.
•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 fire extinguisher in the work area.

Warnings
6 3A7826A
PRESSURIZED EQUIPMENT 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.
EQUIPMENT 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 Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer's warnings. For
complete information about your material, request Safety Data Sheets (SDSs) from distributor or
retailer.
• Do not leave the work area while equipment is energized or under pressure.
• 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 modifications 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 traffic 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.
MOVING PARTS HAZARD
Moving parts can pinch, cut, or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing
equipment, follow the Pressure Relief Procedure and disconnect all power sources.
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 Sheets (SDSs) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
WARNING

Warnings
3A7826A 7
BURN HAZARD
Equipment surfaces and fluid that is heated can become very hot during operation. To avoid severe
burns:
• Do not touch hot fluid or equipment.
PERSONAL PROTECTIVE EQUIPMENT
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. 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.
WARNING

Typical Installation
8 3A7826A
Typical Installation
The system accessories shown in FIG. 1 are not included. Contact your Graco distributor to design a complete
system.
Key:
A Electrical disconnect
B Fluid drain valve
C Fluid shutoff valve
D Fluid line
E Start/stop switch
F Ground wire connection
G Static ground wire
H Explosion proof conduit seal
J Pressure gauge
FIG. 1 Typical Installation
A
B
Non-Hazardous
Location
Hazardous
Location
C
D
D
E
Rear View
F
G
2
2
Explosion proof conduit seal
required within 457 mm
(18 in.) of the motor for U.S.
and Canada.
H
J

Installation
3A7826A 9
Installation
Hazardous Location Cabling
and Conduit Requirements
Explosion Proof Requirements
All electrical wiring in the hazardous locations must be
encased in approved explosion-proof conduit that is
suitable for Class I, Division I, Group C and D locations.
Follow all national, state, and local electrical codes and
regulations.
US and Canada Conduit Location Requirement:
Install a conduit seal within 457 mm (18 in.) of the motor
enclosure.
Cable Rating Requirement: Use cables with a
minimum rating of 70°C (158°F).
Use appropriate conduit, connectors, and cable glands
rated for Ex II 2 G. Follow all national, state, and local
electrical codes and regulations.
Cable Rating Requirement: Use cables with a
minimum rating of 70°C (158°F).
Power Requirements
The system requires a dedicated circuit protected with
a circuit breaker in each ungrounded phase.
Location Requirements
• There must be sufficient space on all sides of the
equipment for installation, operator access,
maintenance, and air circulation.
• The mounting surface and mounting hardware
must be strong enough to support the weight of the
equipment, fluid, hoses, and stress caused during
operation.
• There must be an electrical disconnect (A) within
easy reach of the equipment. See FIG. 1 Typical
Installation, page 8.
Mount the Pump
Follow the instructions in the pump mounting kit
manual to mount the pump on a stand or on the wall.
See Related Manuals, page 3.
Stand Mount
1. Use the Floor Stand Mounting Pattern, page 35.
2. Bolt the stand to the floor with M19 (5/8 in.) bolts.
Use bolts that engage at least 152 mm (6 in.) into
the concrete floor to prevent the pump from
tipping.
3. Use shims to level the pump if needed.
Installation of this equipment involves potentially
hazardous procedures. Only trained and qualified
personnel who have read and who understand the
information in this manual should install this
equipment. All electrical wiring must be done by a
qualified electrician and comply with all local codes
and regulations.
Flame Proof Requirements
Model by
Horse power
Voltage Phase Hz kVA
2 HP (1.49 kW) 380–480 Vac 3 50/60 2.7
3 HP (2.24 kW) 380–480 Vac 3 50/60 3.4
5 HP (3.73 kW) 380–480 Vac 3 50/60 5.7

Installation
10 3A7826A
Wall Mount
1. Use the wall mount bracket as a template.
NOTE: The bracket has two mounting hole groups. See
Mounting Bracket Pattern, page 34
2. Drill four 7/16 in. (11 mm) holes into the wall. Bolt
the bracket securely to the wall. Always use bolts
and washers designed to hold in the wall’s
construction.
3. Attach the pump assembly to the mounting
bracket.
Required System Accessories
•Electrical disconnect (A): Required in the system
to disconnect and isolate electricity from the motor.
•Start stop switch (E): Temporarily runs or stops
the motor. Must be approved for hazardous
locations.
Required Fluid Line Accessories
Install accessories as shown in FIG. 1, using adapters
as necessary. Make sure they meet the system’s size
and pressure rating requirements. See Technical
Specifications, page 36.
•Fluid drain valve (B): Required in the system to
relieve pressure in the hose and circulation system.
•Fluid shutoff valve (C): shuts off fluid flow.
Grounding
Static Grounding
Use a ground wire (G) to connect the motor to a true
earth ground.
1. Loosen the ground screw.
2. Insert a ground wire (G).
3. Tighten the ground screw securely.
4. Connect the other end of the ground wire (G) to a
true earth ground.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
FIG. 2 Motor ground wire location

Installation
3A7826A 11
Electrical Grounding
1. Ensure that the electrical disconnect (A) is shut off
and locked out.
2. Remove the cover to access the motor electrical
wiring compartment (EC).
3. Connect the supply ground wire to GND.
4. Connect the other end of the supply ground wire to
a true earth ground.
Component Grounding
Fluid hoses: Use only electrically conductive hoses
with a maximum of 500 ft. (150 m) combined hose
length to ensure grounding continuity. Check the
electrical resistance of hoses. If total resistance to
ground exceeds 25 megohms, replace hose
immediately.
Fluid supply container: Follow your local code.
Solvent pails used when flushing: Follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a non-conductive
surface, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: Hold metal part of the spray gun or
valve firmly to the side of a grounded metal pail, then
trigger the gun or open the valve.
Connect Supply Wiring
1. Ensure that the electrical disconnect (A) is shut off
and locked out. See FIG. 3.
2. Bring the power wires (L1, L2, and L3) through the
3/4-14npt(f) inlet port of the electrical wiring
compartment. Connect the wires to the terminal
blocks.
NOTE: When using a communication module, the wire
orientation is important. L1 and L3 transmit
communication. Incorrectly wiring the communication
module will result in communication failure. See FIG. 4.
- L1 to W1 (black)
- L2 to W2 (red)
- L3 to W3 (blue)
3. Torque terminal screws (TS) to 7 in-lb (0.79 N•m).
Do not over-torque.
4. Close the electrical wiring compartment (EC).
Torque the cover screws (CS) to 15 ft-lb (20 N•m).
FIG. 3 Locked out disconnect example
FIG. 4 Motor wiring
A
GND
L1
L2
L3
W3
W1
W2
All electrical wiring must be done by a qualified
electrician and comply with all local codes and
regulations.

Installation
12 3A7826A
Install the Fill Cap
The motor is pre-filled with oil. Replace the shipping
plug with the fill cap (FC) before first use.
Flush Before Using the
Equipment
The pump fluid section was tested with lightweight oil,
which is left in the fluid passages to protect parts.To
avoid contaminating your fluid with oil, flush the
equipment with a compatible solvent before using the
equipment.
FIG. 5 Motor electrical compartment wires
Torque to 7 in-lb (0.79 N•m)
Torque to 15 ft-lb (20 N•m)
A conduit seal is required
within 457 mm (18 in.) of the
motor for US and Canadian
installations.
2
3
EC
J
1
3
2
CS
2
CS
2CS
2
CS
1
TS
3/4 14 npt(f)
FIG. 6 Fill cap
FC

Operation
3A7826A 13
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Shut off the start/stop switch (E).
2. Shut off and lock out the electrical disconnect (A).
3. Open the fluid drain valve (B), having a waste
container ready to catch drainage. Leave open until
you are ready to pressurize the system again.
Startup
1. Follow the motor start up instructions in the motor
operation manual. See Related Manuals, page 3
2. Run the pump at a slow speed until the pump
primes the fluid lines and forces air out of the
system.
Shutdown
1. Follow the Pressure Relief Procedure, page 13.
2. Follow the shutdown instructions in the motor
manual. See Related Manuals, page 3
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as splashing fluid and moving
parts, follow the Pressure Relief Procedure when
you stop dispensing and before cleaning, checking,
or servicing the equipment.

Maintenance
14 3A7826A
Maintenance
Preventive Maintenance
Schedule
The operating conditions of your particular system
determine how often maintenance is required.
Establish a preventive maintenance schedule by
recording when and what kind of maintenance is
needed, and then determine a regular schedule for
checking your system.
Flushing Procedure
0
• Flush before changing fluids, before fluid can dry in
the equipment, before storing, and before repairing
equipment.
• Flush at the lowest pressure possible. Check
connectors for leaks and tighten as necessary.
• Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts
1. Follow the Pressure Relief Procedure on page 13.
2. Supply a compatible flushing material to the
system.
3. Set pump to lowest possible fluid pressure, and
start the pump.
4. Flush long enough to thoroughly clean the system.
5. Follow the Pressure Relief Procedure on page 13.
Change the Oil
Change the oil after a break-in period of
200,000–300,000 cycles. After the break-in period,
change the oil once a year.
1. Place a minimum 2 quart (1.9 liter) container under
the oil drain port.
2. Remove the oil drain plug.
3. Allow all oil to drain from the motor.
4. Reinstall the oil drain plug. Torque to 25–30 ft-lb
(34–40 N•m).
5. Add Oil, page 15.
Check Oil Level
Check the oil level in the sight glass (SG). The oil level
should be near the halfway point of the sight glass
when the unit is not running.
To avoid fire and explosion, always ground
equipment and waste container. To avoid static
sparking and injury from splashing, always flush at
the lowest possible pressure.
FIG. 7 Oil drain plug and sight glass
Oil drain plug
SG

Maintenance
3A7826A 15
Add Oil
1. Open the fill cap (FC).
2. Add a compatible oil. See Technical
Specifications on page 36.
NOTE: The oil capacity is 2.0 quarts (1.9 liters). Do not
overfill.
3. Reinstall the fill cap (FC).
FIG. 8 Fill cap location
FC

Troubleshooting
16 3A7826A
Troubleshooting
1. Follow the Pressure Relief Procedure on page 13,
before checking or repairing the equipment.
2. Check all possible remedies before disassembling
the pump.
NOTE: The LED on the motor will blink if an error is
detected. Refer to the motor manual for Error Code
Troubleshooting.
Problem Cause Solution
Pump output low on
both strokes.
Inadequate supply voltage Verify supply voltage. See Technical
Specifications, page 36.
Exhausted or inadequate fluid
supply
Refill the pump fluid supply.
Clogged fluid components Clear clogged components.
Worn piston seal Replace piston seal. ✓
Pump output low on
only one stroke.
Held open or worn ball check
valves
Check and repair ball check valves. ✓
Worn piston packing Replace packings. ✓
No output. Improperly installed ball check
valves
Check and repair the ball check valves. ✓
Pump operates
erratically.
Exhausted or inadequate fluid
supply
Refill the pump fluid supply.
Held open or worn ball check
valves
Check and repair the ball check valves. ✓
Worn piston seal Replace piston seal. ✓
Pump will not operate.
Inadequate supply voltage Verify supply voltage. See Technical
Specifications, page 36.
Clogged fluid components Clear the clogged components.
Fluid dried on piston rod Disassemble and clean pump. ✓
NOTE: Stop pump at bottom of stroke to avoid
piston rod damage.
✓ See your lower repair manual that corresponds with your model. Repair manuals vary by model. Find your
specific lower model in the Pump Matrix on page 19.

Repair
3A7826A 17
Repair
NOTE: There are no user-serviceable parts in the
motor. Contact your Graco representative for
assistance.
Prepare Equipment for Service
1. Stop the pump at the bottom of its stroke.
2. Shut off and lock out the electrical disconnect (A).
3. Follow the Pressure Relief Procedure, page 13.
4. Follow the Flushing Procedure, page 14.
5. Disconnect the hoses from the lower and plug the
ends to prevent fluid contamination.
Disconnect the Pump Lower
Disconnect the lower from the motor. Use a repair
manual that corresponds with your model. Find your
specific lower model in the Pump Matrix on page 19.
Yxxx1x Models
1. Remove the hairpin clip (23) and slide the coupling
cover (22) up to remove the coupling assembly (14).
2. Unscrew the locknuts (20) from the tie rods (12).
3. Separate the lower (2) from the tie rods (12).
Non-Yxxx1x Models
1. Loosen the coupling nut (16) from the coupling
adapter (13), and remove the coupling collar (15).
2. Remove the coupling nut (16) from the piston rod.
3. Unscrew the locknuts (20) from the tie rods (12).
4. Separate the lower (2) from the tie rods (12).
FIG. 9 Loosen the coupler
FIG. 10 Loosen the coupler
23
22
14
12
2
16
15
12
2
piston rod
13

Repair
18 3A7826A
Reconnect the Lower and Motor
If the coupling adapter (13) and tie rods (12) have not
been disassembled from the motor (1), skip to Yxxx1x
Models, page 18, or .Non-Yxxx1x Models, page 18.
If the coupling adapter (13) and tie rods (12) have been
disassembled from the motor (1), follow these steps:
1. Screw the tie rods (12) into the motor (1) and torque
to 50-60 ft-lb (68-81 N•m).
2. Apply red thread locker to the coupling adapter
(13).
3. Screw the coupling adapter (13) into the motor
shaft and torque to 90–100 ft-lb (122–135 N•m).
4. Continue to Yxxx1x Models, page 18, or
Non-Yxxx1x Models, page 18.
Yxxx1x Models
1. Orient the lower (2) to the motor (1). Position the
lower on the tie rods (12).
2. If you are reusing lock nuts (20) and the nylon of the
lock nut is worn or cut, add blue thread locker to
the tie rod threads.
3. Screw the lock nuts (20) onto the tie rods (12).
Tighten the lock nuts (20) and torque to 50–60 ft-lb
(68–81 N•m).
4. Raise the motor shaft. Place the coupling cover (22)
on the coupling adapter (13) and lower the lower
the motor shaft. Place the coupling assembly (14)
onto the lower (2) and slide the coupling cover (22)
over the coupling assembly (14). Insert the hairpin
clip (23).
5. Tighten the lock nuts (6) and torque to 50-60 ft-lb
(68-81 N•m).
6. Continue to Test Pump Operation, page 18.
Non-Yxxx1x Models
1. Assemble the coupling nut (13) over the piston rod.
2. Orient the lower (2) to the motor (1). Position the
lower on the tie rods (4).
3. If you are reusing lock nuts (20) and the nylon of the
lock nut is worn or cut, add blue thread locker to
the tie rod threads.
4. Screw the lock nuts (20) onto the tie rods (12).
Leave the lock nuts (20) loose enough to allow the
lower to move so that it can be aligned correctly.
5. Insert the coupling collars (15) into the coupling nut
(16). Tighten the coupling nut (16) onto the coupling
adapter (13) and torque to 90–100 ft-lb (122–135
N•m) to align the motor shaft with the piston rod.
6. Tighten the lock nuts (6) and torque to 50-60 ft-lb
(68-81 N•m).
7. Continue to Test Pump Operation, page 18.
Test Pump Operation
1. Test the pump operation before reinstalling it in the
system.
a. Connect hoses and flush the pump. See
Flushing Procedure, page 14.
b. Check for smooth operation and leaks while
flushing.
c. Adjust or repair as necessary before reinstalling
in the system.
2. Reconnect the pump ground wire before operating.
FIG. 11 Attach the coupler
16
15
12
2
piston rod
13
1
Apply red thread locker.
1

Pump Matrix
3A7826A 19
Pump Matrix
Y31xxx
Pumps with 2 HP motors and 145 cc Lowers
Y46xxx
Pumps with 3 HP motor and 145 cc lower displacement
Y24xxx
Pumps with 2 HP motor and 180 cc lower displacement
Y40xxx
Pumps with 3 HP motors and 180 cc Lowers
Y70xxx
Pumps with 5 HP motor and 180 cc lower displacement
Pump Model Motor Lower
Y31B10 YM1022 L145C1
Y31D10 YM1024 L145C1
Y31BH0 YM1022 236458
Y31DH0 YM1024 236458
Y31BS0 YM1022 L145C1
Y31DS0 YM1024 L145C1
Y31B11 YM1022 L145C1
Y31D11 YM1024 L145C1
Y31BH1 YM1022 236458
Y31DH1 YM1024 236458
Y31BS1 YM1022 L145C1
Y31DS1 YM1024 L145C1
Y31B12 YM1022 L145C1
Y31D12 YM1024 L145C1
Y31BH2 YM1022 236458
Y31DH2 YM1024 236458
Y31BS2 YM1022 L145C1
Y31DS2 YM1024 L145C1
Pump Model Motor Lower
Y46BH0 YM1032 236458
Y46DH0 YM1034 236458
Y46BS0 YM1032 L145SS
Y46DS0 YM1034 L145SS
Y46BH1 YM1032 236458
Y46DH1 YM1034 236458
Y46BS1 YM1032 L145SS
Y46DS1 YM1034 L145SS
Y46BH2 YM1032 236458
Y46DH2 YM1034 236458
Y46BS2 YM1032 L145SS
Y46DS2 YM1034 L145SS
Pump Model Motor Lower
Y24B10 YM1022 L180C1
Y24D10 YM1024 L180C1
Y24BE0 YM1022 236456
Y24DE0 YM1024 236456
Y24B11 YM1022 L180C1
Y24D11 YM1024 L180C1
Y24BE1 YM1022 236456
Y24DE1 YM1024 236456
Y24B12 YM1022 L180C1
Y24D12 YM1024 L180C1
Y24BE2 YM1022 236456
Y24DE2 YM1024 236456
Pump Model Motor Lower
Y40BE0 YM1032 236456
Y40DE0 YM1034 236456
Y40BE1 YM1032 236456
Y40DE1 YM1034 236456
Y40BE2 YM1032 236456
Y40DE2 YM1034 236456
Pump Model Motor Lower
Y70B10 YM1052 L180C1
Y70D10 YM1054 L180C1
Y70B11 YM1052 L180C1
Y70D11 YM1054 L180C1
Y70B12 YM1052 L180C1
Y70D12 YM1054 L180C1

Pump Matrix
20 3A7826A
Y21xxx
Pumps with 2 HP motor and 220 cc lower displacement
Y30xxx
Pumps with 3 HP motors and 220 cc lower
displacement
Y57xxx
Pumps with 5 HP motor and 220 cc lower displacement
Y60xxx
Pumps with 5 HP motor and 220 cc lower displacement
Y16xxx
Pumps with 2 HP motor and 290 cc lower displacement
Pump Model Motor Lower
Y21B10 YM1022 L220C1
Y21D10 YM1024 L220C1
Y21BE0 YM1022 236470
Y21DE0 YM1024 236470
Y21B11 YM1022 L220C1
Y21D11 YM1024 L220C1
Y21BE1 YM1022 236470
Y21DE1 YM1024 236470
Y21B12 YM1022 L220C1
Y21D12 YM1024 L220C1
Y21BE2 YM1022 236470
Y21DE2 YM1024 236470
Pump Model Motor Lower
Y30B10 YM1032 L220C1
Y30D10 YM1034 L220C1
Y30BE0 YM1032 236470
Y30DE0 YM1034 236470
Y30BS0 YM1032 L220SS
Y30DS0 YM1034 L220SS
Y30B11 YM1032 L220C1
Y30D11 YM1034 L220C1
Y30BE1 YM1032 236470
Y30DE1 YM1034 236470
Y30BS1 YM1032 L220SS
Y30DS1 YM1034 L220SS
Y30B12 YM1032 L220C1
Y30D12 YM1034 L220C1
Y30BE2 YM1032 236470
Y30DE2 YM1034 236470
Y30BS2 YM1032 L220SS
Y30DS2 YM1034 L220SS
Pump Model Motor Lower
Y57BS0 YM1052 L220SS
Y57DS0 YM1054 L220SS
Y57BS1 YM1052 L220SS
Y57DS1 YM1054 L220SS
Y57BS2 YM1052 L220SS
Y57DS2 YM1054 L220SS
Pump Model Motor Lower
Y60B10 YM1052 L220C1
Y60D10 YM1054 L220C1
Y60B11 YM1052 L220C1
Y60D11 YM1054 L220C1
Y60B12 YM1052 L220C1
Y60D12 YM1054 L220C1
Pump Model Motor Lower
Y16B10 YM1022 L290C1
Y16D10 YM1024 L290C1
Y16BE0 YM1022 237514
Y16DE0 YM1024 237514
Y16B11 YM1022 L290C1
Y16D11 YM1024 L290C1
Y16BE1 YM1022 237514
Y16DE1 YM1024 237514
Y16B12 YM1022 L290C1
Y16D12 YM1024 L290C1
Y16BE2 YM1022 237514
Y16DE2 YM1024 237514