and related accessories contain chemicals known to the
State of California to cause cancer, birth defects or other
reproductive harm.
Hypro medium pressure diaphragm pumps are
recommended for spraying herbicides, pesticides,
liquid fertilizers, and many other hard-to-handle fluids.
Low-cost maintenance and almost wear-free operation
make these pumps ideal for a wide variety of spraying
Model 9910-D252
Model 9910-D252GRGI
Model 9910-D252GRGI58
Model 9910-D252GRGIAP
Max flow: 6 gpm
Max pressure: 290 psi
Max speed: 650 rpm (D252)
3600 rpm (D252GRGI) 2 diaphragms
jobs. Pressure and output are designed for optimum
performance of small to medium-sized sprayers.
Hypro medium pressure diaphragm pumps can be
adapted for male 1-3/8” splined shaft, female 1-3/8”
splined shaft, 1” solid shaft, or gear reduction drive
options. See kits on page 2. Pumps include a pulsation
dampener except for Models 9910-D303, D403, and
D503.
Model 9910-D30
Model 9910-D30AP-A
Model 9910-D30GRGI
Model 9910-D30-B-GRGI
Max flow: 9 gpm
Max pressure: 580 psi
Max speed: 550 rpm (D30)
3600 rpm (D30GRGI) 2 diaphragms
Model 9910-D303
Model 9910-D303GRGI
Model 9910-D403
Model 9910-D403GRGI
Order the appropriate shaft adapter kit or gear reduction unit for the
drive option requirements. Refer to the adjoining chart for proper
selection. For proper installation, refer to pages 4 through 8.
Gear
Pump
Model
9910-D503 9910-KIT2200 9910-KIT2202 9910-KIT2204 9910-KIT1642 for 8 hp, or 9910-KIT 1640 for 5 hp 9910-HYD5312 8000-0056
9910-D252
9910-D303/403
9910-D30
9910-D50
1-3/8” Male 1-3/8” Female Reduction Hydraulic
Splined PTO 1” Solid Shaft Splined PTO Units for Gas Motor Mounting
Shaft W/Keyway Coupler Engine Drive Flange Kit
9910-KIT2200 9910-KIT2202 9910-KIT1704 9910-KIT1640 for 5 hp 9910-HYD5312 8000-0056
9910-KIT1702 9910-KIT1703 9910-KIT1704 9910-KIT1640 for 5 hp 9910-HYD5312 8000-0056
9910-KIT1706 9910-KIT1707 9910-KIT1704 9910-KIT1642 for 8 hp, or 9910-KIT 1640 for 5 hp 9910-HYD5312
Hypro
Gearbox
Control Units:
Control units are available for easy flow and pressure control
of your sprayer system. These units include a manual dump
valve and adjustable pressure relief valve to control pressure,
a liquid-filled pressure gauge to monitor pressure, and shut-off
valves to control flow. Control unit GR40 and GS40GI can be
remote mounted with kit no. 9910-KIT1741. Refer to the adjoining chart to select the proper control unit for your pump.
General Safety Information
Notes are used to notify of installation, operation, or
maintenance information that is important but not
safety related.
Caution is used to indicate the presence of a hazard, which will or can cause minor injury or property
damage if the notice is ignored.
Warning denotes that a potential hazard exists and
indicates procedures that must be followed exactly
to either eliminate or reduce the hazard, and to avoid
serious personal injury, or prevent future safety
problems with the product.
ControlMax. Max. Pump
Unit Model GPM PSI Model
9910-KIT 1990 6 290 D252
9910-GR40 11 580 D303/D403
9910-GS40GI 21 580 D50 & D30
9910-RM40 24 580 D503
• Do not pump flammable or explosive fluids
such as gasoline, fuel oil, kerosene, etc. Do not
use in explosive atmospheres. Do not pump
asphalt sealer, roofing compounds, concrete
sealers, or any two-step curing products. The
pump should only be used with liquids compatible with the pump materials. Failure to follow
this notice can result in severe personal injury
and/or property damage and will void the product warranty.
• Never use your hand to check the condition
of hydraulic lines or hoses. If hydraulic fluid
penetrates the skin, get medical attention immediately. Failure to get proper medical attention
may result in loss of limb or life. The safest way
to check hydraulic lines is by holding a piece of
cardboard next to the hydraulic line or hose.
Danger is used to indicate the presence of a hazard
that will result in severe personal injury, death, or
property damage if the notice is ignored.
• The sound pressure level of the pump may
exceed 80dBA. Observe all safety precautions
when operating the pump within close proximity
for extended periods by wearing hearing protectors. Extended exposure to elevated sound
levels will result in permanent loss of hearing
acuteness, tinnitus, tiredness, stress, and other
effects such as loss of balance and awareness.
• Verify that pump shaft rotates freely prior to
engaging the pump drive.
• Check all hoses for weak or worn condition
before each use. Make certain that all connections are tight and secure.
• Operate the pump between a temperature range of
45o to 140o F [7o to 60o C].
• Make certain that the power source conforms to
the requirements of your equipment.
• Provide adequate protection in guarding around
the moving parts such as shafts and pulleys.
• Disconnect the power before servicing.
• Release all pressure within the system before servicing any component.
• Drain all liquids from the system before servicing.
• Secure the discharge line before starting the
pump. An unsecured discharge line may whip,
resulting in personal injury and/or property damage.
Hazardous Substance Alert
• Periodically inspect the pump and the system
components. Perform routine maintenance as
required (see maintenance).
• When wiring an electrically driven pump, follow
all electrical and safety codes, as well as the
most recent National Electrical Code (NEC) and
the Occupational Safety and Health Act (OSHA)
requirements.
• Use only pipe, hose, and hose fittings rated for
maximum rated pressure of the pump or the
pressure at which the pressure relief valve is set
at. Do not use used pipe.
• Do not use these pumps for pumping water or
other liquids for human or animal consumption.
• Do not pressure feed pump inlet.
• Always drain and flush pump before servicing or
disassembling for any reason (see instructions).
• Always drain and flush pumps prior to returning
unit for repair.
• Never store pumps containing hazardous chemicals.
Maintenance Schedule
• Before returning pump for service/repair, drain
out all liquids and flush unit with neutralizing liquid. Then, drain the pump. Attach tag or include
written notice certifying that this has been done.
Please note that it is illegal to ship or transport
any hazardous chemicals without United States
Environmental Protection Agency Licensing.
Use only pipe, fittings, accessories, hose, etc. rated for
the maximum pressure rating of the pump.
1. Always mount pump with oil sight tube in upright position
(See Figure 1).
2. The proper selection of hose type and size is vital to optimal performance.
a. Use good quality inlet hose, compatible with the fluids
being pumped and with good elasticity to reduce inlet
water hammer or pulsation. Be sure that hose is not too
rigid but capable of operating at low vacuums without
collapsing. The diameter of the inlet hose should be
at least that of the pump inlet port size and preferably
one size larger if the inlet line is longer than 6 feet [1.8
meters].
b. Use only approved high pressure hose on the discharge
side of pump.
3. Most ports are provided with hose barb connections. Use
good quality hose clamps and tighten them securely.
Diaphragm Pump Connection
Figure 1
Agitator
Agitation Line
Control
Valve
Strainer
Outlet
Pressure
Gauge
To Spray Gun
Tank
Shut-off
Pump
Relief Valve
To Boom Nozzles
Boom Shut-off
or Selector
Bypass Line
Shaft Adapter Kit Installation
Order the appropriate shaft kit according to the chart on
Page 2.
Female Splined Coupler Kits 9910-KIT1704 and
9910-KIT2204 (See Figure 2).
1. Slide the splined shaft adapter (Ref. 57) onto the pump
shaft and secure with three hex head bolts (Ref. 60) and
three washers (Ref. 61).
2. Position the torque arm bracket over the pump shaft.
3. Align the holes in the torque arm bracket with the two lower
holes of the pump; then, secure it to the pump with the two
bolts (Ref. 62) and washers (Ref. 61).
4. Position the clamp (Ref. 56) over the groove in the splined
shaft adapter; then, install the bolt (Ref. 71) into the clamp.
5. Slide the pump assembly onto PTO shaft and secure it with
the bolt (Ref. 71).
6. Position the shield (Ref. 105) over the shaft adapter, lining
up the holes with the remaining two holes in the torque
bracket. Secure with 2 bolts (Ref. 62) & washers (Ref. 61).
71
Figure 2
56
105
57
60
11
61
61
62
7. Attach chains (Ref. 11) to the bracket and secure to the
tractor to prevent rotation of the pump during operation.
Male Splined Shaft Kits 9910-KIT1702, 9910-KIT1706,
9910-KIT2200 (See Figures 3 and 4)
1. Install bases (Ref. 1) onto the pump securing with 2 bolts
(Ref. 2), 2 washers (Ref. 4), and 2 nuts (Ref. 3).
Models D303 and D403 are shipped with bases. Mount the
shaft adapter as shown in Figure 4.
2. Mount shaft adapter (Ref. 5A for KIT1703 & KIT1707, or
Ref. 5B for KIT1702 & KIT1706) onto the pump shaft and
secure with 3 bolts (Ref. 6) and 3 washers (Ref. 7).
3. Mount pump/base assembly securely to prevent movement.
5B
Figure 3
5A
KIT2202
Figure 4
1
2
Kit 1702
& 1706
6
4
3
5A
Kit 1703
& 1707
7
5B
KIT2200
Installation Instructions for Gear Reduction Kit 9910-KIT1640
See Figure 5
7
6
Old Style
18
17
19
15
16
12
10
9
15
13
8
11
14
Figure 5
Hypro recommends a blue thread locking compound on all threaded fasteners that do not require
lock washers. Shaft key needs to be inspected
occasionally and replaced if worn.
The 9910-KIT1640 gear reducer is designed for direct
mounting the 9910-D30, D303, D403, D50, and D503
diaphragm pump onto a 5 hp gasoline engine with a
flange mounting and 3/4” solid shaft.
1. Lubricate the o-ring (Ref. 1) in the pump adapter
flange (Ref. 3). Slip the flange over the machined
surface of the casting, shaft end of pump.
2. Install the pump gear (Ref. 5) with the pilot diam-
eter of the gear inserted into the inner diameter of
10
9
9
20
10
4
the pump shaft. Secure firmly onto the shaft using
M10 x 25 socket head cap screws (Ref. 7) and lock
washers (Ref. 6).
3. Align the holes in the pump adapter flange (Ref. 3)
with threaded holes in the pump body. Lubricate the
gasket (Ref. 20) and place it in position on the gearbox body (Ref. 8). Install the gearbox body (Ref.
8) on the pump adapter flange (Ref. 3) and secure
firmly with M10 x 75 socket head cap screws (Ref.
12). Install the M8 x 20 socket head cap screw (Ref.
2) and securely tighten.
4. Insert the long key (Ref. 19) into the engine shaft
keyway. Align the keyway in the gear reducer Input
shaft (Ref. 14) and slide the pump and gear reducer
onto the engine shaft.
5
3
1
2
Page 6
5. Align the holes in the gearbox body (Ref. 8) with
threaded holes in engine boss. Insert 5/16”x1”-24
socket head cap screws through the gearbox body
(Ref. 8) and thread them into the threaded holes
in the engine boss. Securely tighten with the hex
7. Fill the gear case with 90W gear lube. To properly
fill, first tighten the bottom plug (Ref. 9); then remove
one side plug (Ref. 9) and the vent plug (Ref. 13).
Fill until the gear lube is no higher than the mark on
the dipstick.
wrench provided.
8. Replace and tighten the side plug and the vent plug.
6. The vent plug (Ref. 13) must always be installed or
reinstalled in the uppermost threaded hole of the
gearbox body (Ref. 8). Plugs (Ref. 9) and vent
plug (Ref. 13) are interchangeable for gear reducer
9. Please apply anti-seize to the motor shaft prior to installing the gearbox.
mounting convenience.
Installation Instructions for Gear Reduction Kit 9910-KIT1642
See Figure 6
12
20
19
21
17
15
10
9
18
16
15
14
23
22
Figure 6
Hypro recommends a blue thread locking compound on all threaded fasteners that do not require
lock washers. Shaft keys need to be inspected occasionally and replaced if worn.
Hypro recommends support for all pumps in excess
of 25 Ibs [11.3 kg] in weight.
The 9910-KIT1642 gear reducer was designed for
direct mounting the 9910-D50 and D503 onto 8 hp gas
engines with flange mount and 1” solid shafts.
1. On the 9910-D50, the square metal plate (Ref. 34)
must be removed from the shaft side of the pump.
Lubricate the o-ring (Ref. 1) in the pump adapter
flange (Ref. 3). Slip the flange with gasket (Ref. 25)
over machined surface of casting of 9910-D503 or
the brass spacer ring installed on the shaft of the
9910-D50.
2. Install the pump gear (Ref. 5) with the pilot diameter of the gear inserted into the inner diameter of
the pump shaft. Secure firmly onto the shaft using
M10 x 25 socket head cap screws (Ref. 7) and lock
washers (Ref. 6).
13
9
8
10
11
10
9
24
7
6
4
5
3
25
1
2
3. Align the holes in the pump adapter flange (Ref.
3) with the threaded holes in the pump body.
Lubricate the gasket (Ref. 24) and place in position
on the gearbox body (Ref. 8). Install the gearbox
body (Ref. 8) on the pump adapter flange (Ref. 3)
and secure firmly with M10 x 75 socket head cap
screws (Ref. 12). Install the M8 x 20 socket head
cap screw (Ref. 2) and securely tighten.
4. Install the engine flange adapter (Ref. 21) raised
side out to the engine boss, using 5/16”x1”- 24
socket head cap screws (Ref. 19).
5. Insert the long key (Ref. 23) into the engine shaft
keyway. Align the keyway in gear reducer input
shaft (Ref. 14) and slide the pump and gear reducer
onto the engine shaft.
6. Align the holes in gearbox body (Ref. 8) with
the threaded holes in the engine flange adapter
(Ref. 21). Insert M8 x 25 socket head cap screws
(Ref. 11) through the gearbox body (Ref. 8)
and thread them into the engine flange adapter
(Ref. 21). Securely tighten with hex wrench provided.
7. The vent plug (Ref. 13) must always be installed or
reinstalled in the uppermost threaded hole of gear
Page 7
box body (Ref. 8). The plugs (Ref. 9) and vent plug
(Ref. 13) are all interchangeable for gear reducer
mounting convenience.
8. Fill the gear case with 90W gear lube. To properly
fill, first tighten bottom plug (Ref. 9); then remove
one side plug (Ref. 9) and vent plug (Ref. 13). Fill
Control Unit Kit Installation
until the gear lube is no higher than the mark on the
dipstick.
9. Replace and tighten the side plug and the vent plug.
10. Please apply anti-seize to the motor shaft prior to installing the gearbox.
Control Unit 9910-KIT1990
The Model 9910-KIT1990 control unit is designed for
control of pressures to 290 psi and flows up to 6 gpm. It
mounts directly to a D252 pump.
Hypro recommends a blue thread locking compound on all threaded fasteners that do not require
lock washers.
1. Locate the discharge flange port on the discharge
manifold. Using a 13 mm wrench, remove the bolts
holding the flange to the manifold.
2. Remove the o-ring from the groove of the flange and
install it into the control unit flange.
3. Install the control unit onto the manifold where the
discharge port had been previously. Use the bolts
provided with the control to secure the control unit.
4. Install the hose barb outlets onto the control unit,
making sure the o-ring is in place on the plastic hose
barb.
Control Unit 9910-GS40GI
The 9910-GS40GI control unit is designed for convenient control of pressures up to 580 psi and flows up to
15 gpm. It can be mounted directly to the D30 and D50
pump, or it can be mounted remotely with KIT1741.
Direct Mounting Onto Pump
1. Locate the discharge flange port on the discharge
manifold. Using a 13 mm wrench, remove the nuts
holding the flange manifold.
2. Remove the o-ring from the groove of the flange and
install into the control unit flange.
Remote Mounting 9910-GS40GI
with Kit No. 9910-KIT1741
Hypro recommends a blue thread locking compound on all threaded fasteners that do not require
lock washers.
1. Locate and secure the mounting bracket in the
desired position.
2. Place o-rings (Ref. 110) into groove of relief valve
body (Ref. 105) and discharge flange housing (Ref.
101).
3. Assemble the control unit and discharge flange
housing onto the bracket and secure with the bolts
and nuts provided.
4. Use the high pressure hose to connect pump discharge port hose barb to the control unit inlet port
hose barb
Control Unit 9910-GR40
The Model 9910-GR40 control unit is designed for convenient control of pressure up to 580 psi and flows up
to 10.6 gpm. It consists of an adjustable pressure relief
valve, a manual pressure release lever, and two individual ball valve-controlled 1/2” hose barb outlets mounted
to the 9910-D303 and D403 discharge manifold.
Direct Mounting Onto Pump
1. Locate the discharge flange port on the discharge
manifold. Using a 13 mm wrench, remove the bolts
holding the flange to the manifold.
Hypro recommends a blue thread locking compound on all threaded fasteners that do not require
lock washers.
3. Install the control unit onto the manifold where the
discharge port had been previously. Use the nuts
previously removed to secure the control unit.
4. Install the hose barb outlets onto the control unit,
making sure the o-rings are in place on the hose
barbs.
2. Remove the o-ring from the groove of the flange and
install it into the control unit flange.
3. Install the control unit onto the manifold where the
discharge port had been previously. Use the bolts
provided with the control to secure the control unit.
4. Install the hose barb outlets onto the control unit,
making sure the o-ring is in place on the plastic hose
barb.
Remote Mounting 9910-GR40
with Kit No. 9910-KIT893
1. Locate and secure the mounting bracket in the
desired position.
Page 8
2. Place o-rings (Ref. 110) into groove of relief valve
body (Ref. 105) and discharge flange housing (Ref.
101).
3. Assemble the control unit and discharge flange
housing onto the bracket and secure with the bolts
and nuts provided.
4. Use the high pressure hose to connect pump discharge port hose barb to the control unit inlet port
hose barb.
Control Unit 9910-RM40
clamping should be used on all outlet hose connections.
Remote Mounting
Hypro recommends a blue thread locking compound on all threaded fasteners that do not require
lock washers.
1. Install mounting bracket (Ref. 29) in desired location
and secure with bolts (Ref. 31) and washers (Ref.
30); then attach the control to the bracket.
The 9910-RM40 control unit is designed for convenient
control of pressures up to 580 psi and flows up to 24
gpm. It consists of an adjustable pressure relief valve,
a manual pressure release lever, and two individual ball
valve-controlled 1/2” hose barb outlets. It can be direct
mounted onto the 9910-D503 discharge manifold.
Direct Mounting
Hypro recommends a blue thread locking compound
on all threaded fasteners that do not require lock
washers.
1. Locate the discharge manifold on the 9910-D503
(Ref. 25). With o-rings (Ref. 4) lubricated and in
position on control valve body (Ref. 28), plug into
discharge manifold. Lock into place with retainer clip
(Ref. 6).
2. Connect bypass hose to bypass hose barb (Ref. 1)
and run unrestricted to supply tank.
3. Connect the desired number of high pressure hoses
to the outlet hose barbs. Unused hose barbs can be
shut off with ball valves provided.
For all discharge hoses, use hose with an operating
pressure rating equal to or greater than the maximum pressure rating of the pump. High pressure
Always wear safety goggles when working with
spring-loaded fasteners or devices.
2. With o-rings (Ref. 4) lubricated and in position on
the control valve body (Ref. 28), plug it into the inlet
adapter (Ref. 32); then lock it into place with retaining clip (Ref. 6).
3. With o-rings (Ref. 4) lubricated and in position on the
other inlet adapter, plug it into the pump discharge
manifold (Ref. 25) and lock it into place with the
retaining clip.
4. Connect the NPT fitting on the discharge manifold of
the pump with the NPT fitting on the control unit with
the high pressure hose.
5. Connect the bypass hose to the bypass hose barb
(Ref. 2), then run it unrestricted to the supply tank.
6. Connect the desired number of high pressure
hoses to the outlet hose barbs on the control valve.
Unused hose barbs can be shut off with ball valves
provided.
For all discharge hoses, use hose with an operating
pressure rating equal to or greater than the maximum pressure rating of the pump. High pressure
clamping should be used on all outlet hose connections.
Operating Instructions
1. Be sure oil is halfway up to the clear oil sight tube. If
necessary, fill to the correct level with Hypro oil (part
number 2160-0038). Hypro oil is a specially formulated, high-grade, non-detergent, SAE 30 weight oil
formulated to prolong pump life.
2. Make sure the suction hose barb is tightly screwed
onto the suction union and that there are no air leaks
on the inlet side of the pump.
3. Check the charge pressure on the pulsation dampener before starting the pump. The pressure is
checked with a standard automotive air gauge. The
pressure should be at approximately 20% of the
maximum pressure that you will be operating the
pump at. Exercise caution when checking pressure
to avoid losing pre-charge.
D252 Control Unit
Pressure Regulator
Adjustment Knob
Outlet Port
Figure 7
Plastic 5/8” Bypass
Hose Barb (Connect
directly to the tank
without restrictions
or ball valves.)
Brass 3/8”
Hose Barb
Outlet
Pressure
Release
Knob
Page 9
4. The relief valve bypass port should be connected
back to the liquid tank without restrictions. Do not
hook bypass line back to the inlet port or inlet hose.
9910-GS40GI Control Unit, Models D30 and D50
5. Allow the pump to start under low pressure by
removing restrictions on the outlet of the pump.
6. Start the pump and let it run for approximately one
minute at low pressure; then stop the pump and
check the oil level in the sight glass. Add Hypro oil if
necessary.
7. Adjust the pump to the desired pressure by changing the relief valve setting on the control unit, relief
valve or unloader.
On pump D252, (See Figure 7) first back out the relief
valve adjustment knob to zero. Then rotate the red
bypass selector knob so that the letter C (pressure) is
in the 12 o’clock up position. Adjust the pressure by
rotating the relief valve adjustment knob to the desired
pressure.
On pump D252, the restriction on the pump is removed
by rotating the red knob on the control unit so that the
letter A (bypass) on the knob is in the 12 o’clock up
position.
On pumps D30 and D50 (See Figure 8), adjust the
pressure by clamping the relief valve adjustment lever
down. With the bale hook in the number one position,
the pressure is about 100 psi [6.9 BAR]; number two is
about 250 psi [17.2 BAR]; number three is about 450
psi; number four is about 550 psi [37.9 BAR]. These
pressures can be adjusted by using the fine adjustment
knob located on top of the relief valve spring. The fine
adjustment knob can be rotated when the relief valve
lever is in the up position.
On pumps D30 and D50, the restriction is removed by
lifting up the relief valve adjustment lever with the bale
hook on the number 1 position.
Fine Adjustment
Knob
Pressure Gauge
Hose Barb
Outlet
Bypass Return Outlet
(Connect directly to the
tank without restrictions or
ball valves.)
Figure 8
Pressure Adjustment
& Release Lever
Hose Barb
Outlet
9910-GR40 Control Unit, Models D303 and D403
Pressure Control
Bypass Setting
Pressure Regulator
Adjustment Knob
Pressure Control
Pressure Setting
Hose Barb
Outlet
Hose Barb
Outlet
Pressure
Gauge
Figure 9
9910-RM40 Control Unit, Model D503
Bypass Hose Barb
(Connect directly to
the tank.)
Pressure
Gauge
On pumps D303 and D403 (See Figure 9), set the
pressure control to the pressure setting; then rotate the
pressure regulator to the desired pressure.
Hose Barb
Outlet
On pumps D503 and D503-GRGI (See Figure 10), slide
the pressure regulator adjustment knob to the UNLOCK
position; then rotate the pressure regulator adjustment
knob to the desired pressure.
On pumps D303, D430, and D50, the restriction is
Figure 10
removed by lifting up the relief valve adjustment lever
with the bale hook on the number 1 position.
2. Hypro diaphragm pumps come with oil in the crankcase. Hypro recommends changing oil after 40 hours
of break-in operation and every three months
or 500 hours, whichever comes first. Use
Hypro oil (part number 2160-0038). Hypro
oil is a specially formulated, high-grade,
non-detergent, SAE 30 weight oil formulated
to prolong pump life.
To drain the oil:
D252
Remove the oil fill cap, turn the pump upside down
and rotate the shaft until oil stops flowing out. (D252
gear reduction oil requirements: use 80-90 wt. gear
lube and fill to level hole on gear reduction side.)
D30, D50, D303, D403 and D503
Remove the drain plug (2406-0023) (or 9910-770070 on
D503) and the oil sight glass covers, and rotate shaft until
the oil stops flowing out. Re-install the drain plug.
To fill the pump with oil, slowly pour oil into sight tube
while turning the pump shaft. Turning the pump shaft
purges all the air out of the crankcase. Always change oil
when replacing diaphragms.
For winter storage or if a freezing condition will be
encountered, flush the pump with a 50/50 mixture of
water and antifreeze.
The bypass return outlet on all control units must be
connected directly to the tank without restrictions or
ball valves.
Oil crankcase capacities are approximate. Fill oil to
proper level in sight glass. Always make sure all the
air is purged out of crankcase prior to operating.
Valve Replacement
Occasionally debris may cause improper seating of the
valves or damage to the o-rings. To check for this problem, follow these steps.
D252
Remove the head bolts and the head. Remove the valve
caps and the valve assemblies. Replace the valve assemblies and o-rings, and reassemble.
D30, D50, D303 and D403
Remove the pump manifolds. With the manifolds removed,
the valves can easily be removed and inspected for debris
and wear. Replace valves, o-rings and manifolds.
D503
Remove valve retainers. With retainers removed, valves
and o-rings can easily be removed and inspected.
Replace valves, o-rings and valve retainers.
Diaphragm Replacement: D30, D252, D303, D403
and D503
Change diaphragms every 500 hours or three months,
whichever comes first.
1. Drain oil from crankcase as instructed previously.
2. Remove pump head bolts and heads.
3. Remove the bolt securing the diaphragm (See
Figure 11).
4. Remove the old diaphragm and the washer (See
Figure 11).
5. Install a new diaphragm; then turn the crankshaft to
bring the piston to its down-stroke and seat the diaphragm into the sleeve groove.
6. Install the washer and bolts removed in steps 3 and 4.
7. Replace the pulsation dampener diaphragm by first
bleeding the air from the dampener. Remove the
bolts from the dampener cover and replace the diaphragm. Reassemble the cover in place and charge
the dampener to 20% of the operating pressure.
8. Refill the crankcase with Hypro oil (part number
2160-0038). Rotate the shaft to distribute the oil, and
fill to proper level.
Diaphragm Replacement: D50
Change diaphragms every 500 hours or three months,
whichever comes first.
1. Drain oil from crankcase as instructed previously.
2. Remove the pump manifolds and valves.
3. Remove the pump head retaining nuts and heads.
4. Turn the crankshaft to bring the diaphragm to the
top of its stroke. Insert a drift pin into the hole in the
retaining bolt to hold it in place. Remove the retaining
nut, retaining washer and the diaphragm (see Figure
12).
5. Turn the crankshaft to bring the piston to the bottom
of its stroke and seat the new diaphragm into the
sleeve groove. Install the retaining washer and tighten the retaining nut while holding the retaining stud in
place with the drift pin. Clean any excess oil from the
area and install the heads, valves and manifolds.
6. Replace the pulsation dampener diaphragm by first
bleeding the air from the dampener. Remove the
cover retaining bolts from the dampener cover and
replace the diaphragm. Reassemble the cover and
bolts in place and charge the dampener to 20% of
operating pressure.
7. Refill the crankcase with Hypro oil (part number 2160-
0038). Rotate shaft to distribute oil, and fill to proper
level.
Control Unit Parts Kit No. 9910-KIT1757 consists of one each of:
Ref. 83 Relief Valve Poppet Retainer, Ref. 84 Gasket Seal O-Ring,
Ref. 85 Tension Spring Guide, Ref. 109 Spring Holder, Ref. 113
Tension Spring and Ref. 114 Relief Valve Seat.
Hypro/SHURflo (hereafter, “Hypro”) agricultural products are warranted to be free of defects in material and workmanship under
normal use for the time periods listed below, with proof of purchase.
- Pumps: one (1) year from the date of manufacture, or one (1) year of use. This limited warranty will not
exceed two (2) years, in any event.
- Accessories: ninety (90) days of use.
This limited warranty will not apply to products that were improperly installed, misapplied, damaged, altered, or incompatible with
fluids or components not manufactured by Hypro. All warranty considerations are governed by Hypro’s written return policy.
Hypro’s obligation under this limited warranty policy is limited to the repair or replacement of the product. All returns will be tested
per Hypro’s factory criteria. Products found not defective (under the terms of this limited warranty) are subject to charges paid by the
returnee for the testing and packaging of “tested good” non-warranty returns.
No credit or labor allowances will be given for products returned as defective. Warranty replacement will be shipped on a freight
allowed basis. Hypro reserves the right to choose the method of transportation.
This limited warranty is in lieu of all other warranties, expressed or implied, and no other person is authorized to give any other
warranty or assume obligation or liability on Hypro’s behalf. Hypro shall not be liable for any labor, damage or other expense, ron
shall Hypro be liable for any indirect, incidental or consequential damages of any kind incurred
any defective product. This limited warranty covers agricultural products distributed within the United States of America. Other world
market areas should consult with the actual distributor for any deviation from this document.
Return Procedures
All products must be flushed of any chemical (ref. OSHA section 1910.1200 (d) (e) (f) (g) (h)) and hazardous chemicals must be
labeled/tagged before being shipped* to Hypro for service or warranty consideration. Hypro reserves the right to request a Material
Safety Data Sheet from the returnee for any pump/product it deems necessary. Hypro reserves the right to “disposition as scrap”
products returned which contain unknown fluids. Hypro re
chemical testing, and proper disposal of components containing unknown fluids. Hypro requests this in order to protect the environment and personnel from the hazards of handling unknown fluids.
serves the right to charge the returnee for any and all costs incurred for
by the reason of the use or sale of
Be prepared to give Hypro full details of the problem, including the model number, date of purchase, and from whom you purchased
your product. Hypro may request additional information, and may require a sketch to illustrate the problem.
Contact Hypro Service Department at 800-468-3428 to receive a Return Merchandise Authorization number (RMA#).
Returns are to be shipped with the RMA number clearly marked on the outside of the package. Hypro shall not be liable for freig t
damage incurred during shipping. Please package all returns carefully. All products returned for warranty work should be sent
shipping charges prepaid to:
HYPRO / PENTAIR
Attention: Service Department
375 Fifth Avenue NW
New Brighton, MN 55112
For technical or application assistance, call the Hypro Technical/Application number: 800-445-8360, or send an email to:
[email protected]. To obtain service or warranty assistance, call the Hypro Service and Warranty number:
800-468-3428; or send a fax to the Hypro Service and Warranty FAX: 651-766-6618.
*Carriers, including U.S.P.S., airlines, UPS, ground freight, etc., require specific identification of any hazardous material being shipped. Failure to do
so may result in a substantial fine and/or prison term. Check with your shipping company for specific instructions.
h
L-1382 Rev. D
Hypro 2015
Printed in USA
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