Graco Hydra-Clean 720 Datasheet

INSTRUCTIONS-PARTS LIST
This rnanulll mntains IMPORTANT
WARNINGS
and INSTRUCTIONS
READ AND RETAIN FOR REFERENCE
HYDRA-CLEAN 8 71 0,720, I 01 0,1020
~~
Pressure Washer
Model 800-902, Series A 230/460 Volt, 3 Phase, 10 GPM
Model 800-904, Series
A 230/460 Volt, 3 Phase, 20 GPM
700psi.(48 bar) OPERATING PRESSURE .
1100 psi (75 bar) MAXIMUM WORKING PRESSURE
Model 800-903, Serles A 230/460 Volt, 3 Phase, 10 GPM
Model 800-905, Serles
A 230/460 Volt, 3 Phase, 20 GPM
10oO psi (69 bar) OPERATING PRESSURE
1300 psi (91 bar) MAXlMUM WORKlNG PRESSURE
Water supply tank, gun & wand assembly, hose assembly and motor starler are not included.
GRACO INC. RO. Box 1441 MINNEAPOLIS, MN 55440-1441
@COPYRIGHT 1991, GRAGO INC.

HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY
FOR PROFESSIONAL
USE ONLY. OBSERVE ALL WARNINGS.
Read and understand all instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General Safety
mis pressure washer generates very high
fluid
pressure. Spray from the gun, leaks or ruptured
components can inject fluid through your skin and into
your body and cause extremely serious bodily injury
including the need for amputation. Also,fluid injectedor
damage.
splashed into the eyes or on the
skin can cause serious
NNER point the spray gun or wand at anyone or at any
part of the body.
NNER put hand or fingers over the
spray tip.
ALWAYSfollow the Pressure Relief Procedure, before
cleaning or servicing any part of the sprayer.
NNER try to stop or deflect leaks with your hand or
body.
Be sure equipment safety devices are operating
properly before each use.
Medical Treatment
If any fluid appears to penetrate your skin, get
NOT TREAT
AS A SIMPLE CUT. Tell the doctor exactly
what fluid was injected.
EMERGENCY MEDICALTREATMENTATONCE. DO
NOTE TO PHYSICIAN lnjection in the skin is a
traumatic injur,! It
Is Important to treat the injury
treatment to research toxicity Toxicity is a
surglcaily as soon as possible.
Do not delay
direct& into the bloodstream. Consultation
with a
concern with some exotic coatings injected
plastic surgeon or reconstructive
hand surgeon
may be advisable.
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including fluid
injection and splashing in the eyes or on the skin,
always follow this procedure whenever you stop
spraying for more than
10 minutes, when shutting down,
and before checking 01 repairing any part ofthe system.
1. Engage the trigger safety latch.
2. Tum the sprayer off.
3. Disconnect the electrical supply.
4. Shut off the water supply.
5. Disengage the trigger safety latch and trigger the
gun io relieve pressure, and then engage the trigger
safety latch again.
6. Before long-term (overnight) storage, disconnect
the water supply and disconnect the electricity.
Spray Gun Safety Devices
Be sure
all gun safety devices are operating properly
the gun; this can cause a malfunction and result in
before each use. Do not remove or modify any part of
serious bodily injury.
SAFETY LATCH: Whenever you stop spraying for a
or "safe" position, making the gun inoperative. Failureto
moment, always set the gun Safety latch in
the engaged
properly
set the safety latch can result in accidental
triggering of the gun.
SPRAY TIP SAFEPI: Use extreme caution when
cleaning or changing spray tips.
If a spray tip clogs
while spraying, engage the gun safety latch
immediately.
ALWAYS follow the Pressure Rellet
Procedure and then remove the spray tip
to clean it.

GROUNDING INSTRUCTIONS
mis Droduct must be grounded. If it should malfunction 1- DANGER
or bieak down, grounding provides a path of least
resistance for electric current to reduce the risk of
electric shock. This equipment is equipped with a cord
grounding plug. The plug must be plugged into an
having an equipment-grounding conductor and a
aooromiate outlet that is DroDerlv installed and
improper connection
of the equipment- grounding
conductor can result In the risk
of electrocution.
Check with a qualified electrician or service
person
if you are in doubt as to whether the outlet
Is properly grounded.
giunded in accordance
with ail lbcal codes and
ordinances.
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
To comply with the National Electrical Code (NFPA 70)
and to provide additional protection from the risk of
electric shock, connect this pressure washer to a circuit
that
is protected by a ground-fauit circuit-intempter
(GFCI).
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the pressure washer or accessories,
such as overpressurizing, modifying parts, using
damaged parts, can cause them
to rupture and resun in
incompatible chemicals and fluids, or using wom or
fluid injection, splashing in the eyes or on the skin, or
other serious bodily injury, fire, explosion or property
damage.
NEVER alter or modify any part of this equipment; doing
so could cause it to malfunction.
CHECK ail spray equipment regularly and repair or
replace wom or damaged parts immediately.
ALWAYS wear protective eyewear and appropriate
the chemical manufacturer’s literature for
clothing.
If using a chemical injector, read and follow
recommendations on additional protective equipment,
such
as a respirator,
System Pressure
This sprayer can develop high operating pressure. Be
to withstand the maximum working pressure of this
sure that all spray equipment and accessories are rated
sprayer.
DO NOT exceed the maximum working
system.
pressure of any component or accessory used in the ..
Chemical Compatibility
BE SURE that ail chemicals used in the chemical
injector are compatible with the wetted parts of the
hose, gun, wand and tip, as given
in the Technical Data
(inside back cover). Always read the chemical
manufacturer’s literature before using any chemical in
this pressure washer.
308-533 3

HOSE SAFETY
High pressure fluid in the hoses can be very dangerous.
If the hose develops a leak, split or rupture due to any
kind of wear, damage or misuse, the high pressure
spray emitted from it can cause a fluid injection injury or
other serious bodily injury or property damage.
ALL FLUID HOSES MUST HAVE STRAlN RELIEFS ON
BOTH ENDS. The strain reliefs help protect the hose
from kinks or bends at or close
to the coupling, which
can result
in hose rupture.
use. High pressure fluid can dislodge a loose coupling
TlGHTEN all fluid connections securely before each
or ailow high pressure spray
to be emitted from the
coupling.
NNER use a damaged hose. Before each use,'check
entire hose for cuts, leaks, abrasion, bulging cwer, or
damage or movement of the hose couplings. If any of
these conditions exist, replace
the hose immediately.
DO NOT try to recouple high pressure hose or mend it
with
tape or any other device. A repaired hose cannot
contain
the high pressure fluid.
HANDLEAND ROUTE HOS€S WFFULLY DO not pull
on hoses
to move the pressure washer. Do not use
chemicals which are not compatible with the inner tube
temperatures above
200" F (93' C) or below -40' F
and cover of
the hose. DO NOT expose Graco hose to
(-400 C).
MOVING PARTS HAZARD
Moving parts can pinch or amputate fingers or other Pressure Relief Procedure before checking or
body parts.
K€€P CLEAR of moving parts when starting
or operating the pressure washer.
servicing the pressure washer to prevent discharging
high pressure fluid from the gun.
NNER operate the pressure washer without all guards
and interlocks installed and functioning. Follow the
TERMS
WARNING or DANGER Alerts user to avoid or correct NOTE Identifies helpful procedures and information.
conditions that could cause bodily injury.
CAUTION: Alerts user
to avoid or correct conditions
that could cause damage to the equipment.
IMPORTANT
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These
standards-particularly the General Standards, Part 1910, and the Construction Standards, Part 1926-should be
consulted.
4 308-533

INSTALLATION
PUMP OIL
Check
for Shipping Damage
Check
the unit for any damage that may have occurred
in shipping. Notify the
carrler Immediately If there Is
any damage.
Set
UP.
Before connectingthe unit, be sure the electrical sewice
matches the specification in Technical Data (inside
back cover) and the voltage label on the unit. With the
unit
off, connect the power supply cord to a grounded,
GFCI-protected circuit.
If you are using a downstream chemical injector, install it
between the pump unloader and the high pressure
hose.
Connect the high pressure hose between the pump
outlet and the gun inlet.
CAUTION
Up to 100 ft (30 m) of high pressure hose may
beused. Longer hoses may affect sprayer
performance, and chemical injector performance,
if used.
Install the appropriate spray tip on the wand. See
Installing and Changing Spray Tips.
If you are using a
sandblaster kit, see its separate manual for installation
instructions.
Connect to Water Supply
CAUTION
Before attaching to the water supply, check your
to the water supply.
local plumbing code regarding cross-connection
A backflow preventer P/N 801-133 is available to
prevent bacMlow of contaminated water into the
fresh water supply.
Install it upstream from the
Pump.
Install a regulating water valve,
P/N 800-258, if
inlet water pressure is Over 60 psi (4.1 bar).
Do not exceed 160" F (70' C) inlet water
temperature.
NOTE The water source for the unit
must have a
water holding tank.
minimum 55 gallon float valve controlled
308-533 5

STARTUP
washer to help insure that the unit is ready to operate
Use this procedure whenever starting the pressure
and starting is done safely.
1. Check the oil level.
Pump: Add SA€
20 or 30 weight non-detergent oil
as necessary.
2. lhm on the water supply.
CAUTION
Never run the unit dry. Costly damage to the
pump will result. Always be sure the water
supply is completely tumed on before
3. Trigger the gun until water sprays from the tip
indicating that the air is purged from the system.
4. Start the unit.
5. ALWAYS engage the gun’s trigger safety latch
vhenever you stop spraying, even for a moment
to
reduce the risk of fluid injection or splashing in the
eyes or on the skin if the gun is bumped or triggered
accidentally.
6. ALWAYS observe the following CAUTIONS to avoid
CAUTION
DO NOT allow the pressure washer to idle for
more
than 10 minutes. Doing so may cause the
damage the pump. Tum off the pressure washer
recirculating water
to overheat and seriously
if it will not be spraying or cleaning at least every
this time further.
10 minutes. If heated inlet water is used, reduce
DO NOT run the pump dly. which will quickly
fully tumed on before starting the pump.
damage the pump.
Be sure the water supply is
DO NOT pump caustic materials; such
materials may corrode the pump components.
costly damage
to the pressure washer.
7. See the chemical injector or sandblaster kit manual
for detailed cleaning information
if these
accessories
are used.
6 308-533

Trigger Safety Latch
WARNING
To reduce the risk of serious bodily injury,
including
fluid injection, splashing in the eyes or
on the skin, ALWAYS engage the trigger safely
latch whenever spraying stops, even for a
moment.
in the engaged position, the trigger safety latch
prevents the gun from being triggered
accidentally by hand or if it is dropped or
bumped.
Be sure the latch is pushed fully down
when engaging it
or it cannot prevent the gun
from being triggered. See Figure
2.
TRIGGER SAFETY LATCH SHOWN ENGAGED
TRIGGER SAFETY LATCH SHOWN DISENGAGED
Figure
2
Installing and Changing Spray Tips
WARNING
To reduce the risk of serious bodily injury,
including fluid injection or splashing in the eyes
or
onto the skin, use extreme caution when
changing spray tips.
ALWAYS follow the
procedure below.
1. Follow the Pressure Relief Procedure.
2. Point the gun and wand away from yourself and
anyone
else.
3. Without holding your hand Over the spray tip (A),
pull back the quick coupler ring (B), remove the tip
and then release the ring. See Figure
3.
4. Be sure the tip is secure before starting to spray
again.
5. Tip holding holes are provided on the chassis
To avoid blowing the O-ring out of the quick
coupler, due
to the high pressure in the system,
never operate the pressure washer without a tip
securely mounted in the quick coupler.
Flgure 3
308-533 7

~ ~~~~~ - ~~
.~
SHUTDOWN, FLUSHING AND STORAGE
WARNING
PRESSURE RELIEF PROCEDURE
To reduce the risk of serious bodily injury,
including fluid injection and splashing
in the
eyes, or on the skin, always follow this
than 10 minutes, when shutting down, and
procedure whenever you stop sprayingformore
before checking or repairing any part of the
system.
1. Engage the trigger safely latch.
2. TUm the sprayer off.
3. Disconnect the electrical supply.
4. Shut off the water supply.
5. Disengage the trigger safety latch and
trigger the gun to relieve pressure, and then
engage the trigger safely latch again.
6. Before long-term (overnight) storage,
disconnect the water supply and
disconnect
the electricity.
1. If the pressure washer will be exposed to freezing
temperatures, drain all water out
of the pump. If it
must be stored in freezing temperatures, flush the
unit with a 50% anti-freeze solution. Relieve
pressure. Flush the pressure washer before using
it
again to remove the anti-freeze.
CAUTION
If water does freeze in the pressure washer,
thaw it in a warm room before trying to start
it.
DO NOT pour hot water on or into the pump; it
2. After each use, wipe all surfaces of the pressure
washer with a clean, damp cloth.
3. Perform the appropriate maintenance. See the
maintenance chart.
MAINTENANCE
Observing regular maintenance intervals helps ensure
that you get maximum performance and life from the
pressure washer. Daily Clean water
inlet screen and
There
is a break-in period for the pump. After changing filter. Check pump oil level. Fill
the oil initially, the interval between required changes
is
as necessary.
longer. After first
50
hours of SAE 20 or 30 non-detergent oil.
Change pump break-in oil. Use
To reduce the risk of serious bodily injury,
including fluid injection, splashing in the eyes or of operation or
30 non-detergent oil.
Each 500 hours Change pump oil. Use SAE 20 or
follow the Pressure Rellef Procedure
Wamlng
on the skin or injury from moving parts, always
6 months
before proceeding.
Interval What to
do
WARNING
operation
.

TROUBLESHOOTING CHART
WARNING
To reduce the risk of serious bodily injury, Including fluid injection, splashing in the eyes or on the skin, or
injury from moving parts, always follow the Pressure Relief Procedure Warning before proceeding.
I pump NnS rough Inlet filter clogged. I
Low pressure andlor Wom or wrong size tip.
Worn packings, abrasives in water M
natural wear.
Inadequate water supply.
Belt slippage.
Fouled or
dirty inlet or discharge valves.
Even
a small particle can cause the valve
to stick.
Restricted inlet.
Worn inlet or discharge valves.
Replace wiih
tip of proper size.
Clean. Check more frequently.
Check fitter.
Replace packings. See PUMP SERVICE.
Check water flow rate
to pump. Unit must have a
mlnimum 55 gallon float valve controlled water holding
tank.
Tighten or replace.
filter.
Clean
inlet and discharge valve assemblies. Check
Check garden hose, may
be collapsed or kinked.
Replace wom valves.
ReDlace hioh DreSSure hose.
I
PROBLEM
SOLUTION
CAUSE
1 Leaking high pressure hose. . . .
Water leakage from
under wmo manifold Install new packings.
See PUMP SERVICE.
Wom packings.
-.
I
~ "
Water in pump Humid air condensing inside crankcase.
Install new packings.
See PUMP SERVICE.
Worn packings.
Change oil as specified
in MAINTENANCE.
Install new oil seals. See PUMP SERVICE.
Oil
seals leakino.
v- r ~ ~~
~~~~
Frequent or
the packings Install proper flltraiion on pump inlet plumbing.
Abrasive material
in the fluid being pumped.
premature fai'ure Of
instali new plungers. ~ee PUMP SERVICE. Scored. damaged or wom plungers.
Inlet water temperature
too high. Check water temperature; may not
exceed 1W"
I Overpressurizing pump.
I EQUIPMENT MISUSE HAZARD.
Do not modify any faciory-set adJusimenis. See
I
Excessive pressure due to parilally plugged or replace tip. See Installing and Changlng Spra)
or damaged
tip.
Pump running too long without spraylng.
Running pump dry.
Never
run pump more than 10 minutes wiihout sprayin(
Strong surging at the
Foreign particles
in the inlet M discharge
Clean or replace valves. See PUMP SERVICE.
inlet and low pressure
on the discharge side
valve or wom Inlet and/or discharge valves.
Unit will
not start Unit not plugged in. Check power
wrd.
Do not run pump without water.
Electrical sewice off/GFCi activated.
grounding.
Thermal overload has tripped.
Check fuse/clrcuiI breaker. Check for proper
Press reset bmn
on motor for 1 phase units. Press
stop button on the mdor siarter for
3 phase unih.
308-533 9

PUMP SERVICE
Servicing the Plungers
To reduce the risk of serious bodily injury, NOTE Plunger repair kit, P/N 803-677 is available to
including fluid injection, splashing in the eyes or replace retainers, O-rings. washers and
follow the Pressure Relief Procedure
Warnlng
on the skin, or injury from moving parts, always backup rings for three cylinders.
before proceeding.
-
NOTE The following metric wrenches are needed:
M10, M13 and M30. Repair kits are available.
Refer
to the individual repair sections and the
results, use
all parts in the kits.
pump parts
page for more details. For the best
NOTE: There are Wo different
tool kits to aid in
servicing the pump. P/N 800-298 is used to
ease installation of packings. P/N 800-271
includes the items in 800-298 and tools to aid
in the removal of packing retainers.
Valves
NOTE: For a set of six valves, order P/N 803-664 or
803-666.
1. Loosen the plunger retaining screw five to six tums,
using an MlOwrench. Push the plungertowards the
crankcase
to separate the plunger and retaining
screw.
2. Remove the screw from ihe plunger and examine
washer. Replace these parts,
if necessary, using kit
the O-ring, backup ring and copper bearing/gasket
3. Remove the plunger and flinger from the plunger
shaft. Clean, examine and replace parts as
necessary.
801-474.
4.
Inspect the plunger shaft for oil leakage from the
crankcase.
If leaking is obvious, replace the oil
seals. Otherwise, DO NOT remove these seals as
they cannot be reused. An oil seal kit is available to
replace the seals.
1.
2.
3.
4.
Remove the hex plug from the manifold using an 5. Lightly grease the oil seal, if it is being replaced,
M30 wrench. and the flinger and replace them on the plunger
Examine the O-ring under the hex plug and replace shaft. Then install the plunger.
it
if it is cut or distorted.
6. Lightly grease the retaining screw and the outer end
Remove the valve assembly from the cavity; the
assembly may come apart.
oiihephger. Place the wisher, O-ring and backup
the plunger. Torque
to 14.4 ft-lb (19.5 Nm).
ring around the screw and install the screw through
NOTE: Retorque the plug after
5 hours of operation.
Pumping Section
1. Remove the eight capscrews and lockwashers from
the manifold using an M13 wrench.
2. Carefully separate the manifold from the crankcase.
NOTE:
It may be necessary to tap the manifold lightly
with a
soft mallet to loosen.
CAUTION
Keep the manifold properly aligned with the
damage
to the plunger or seals.
ceramic plungers when removing to avoid
3. Carefully examine each plunger for any scoring or
cracking and replace as necessary.
7. Lubricate. the outside of each plunger. Slide the
manifold onto the crankcase, being careful not
to
damage the seals.
8. Install the capscrews and washers finger-tight.
tightening pattern (Figure
4). Uneven tightening
Torquethescrewsto21.7ft-lb(29Nm)followingthe
may cause the manifold to bind or jam.
I
Figure 4
10 308-533

Servicing the V-Psckings
NOTE: mere are two types of packing kits: one is
packings only, the other includes the
packings, rings and retainers.
1. Remove the manifold as outlined in the Pumping
Section.
2. Carefully pull the packing retainer from the
cut or damaged.
manifold. Examine the O-ring and replace it if it is
3. Remove the v-packing and head ring. Pull out the
intermediate retainer ring. Remove the second
v-packing and second head ring.
4. inspect all parts and replace as necessary.
5. moroughly clean the packing cavities and examine
for debris and damage.
6. Lightly grease the packing cavities and then
ring, v-packing, intermediate
' ring, head ring,
replace the packings in the following order: head
v-packing and packing retainer with the O-ring
installed in the retainer groove.
CAUTION
the correct direction. Improperly installed parts
install
the parts in the proper order and facing
will cause a malfunction.
7. Reassemble the manifold as instructed in Servicing
the Plungers.
308-533 11

PARTS DRAWING
800-903 Hydra-Clean@ I010 Pressure Washer
800-902 Hydra-Clean@
710 Pressure Washer
For wiring diagrams, see pages 13 and 15
9’ 7
12 308-533

PARTS LIST
800-903 Hydra-Clean@ 1010 Pressure Washer
800-902 Hydra-Clean@ 710 Pressure Washer
REF
NO.
2
1
3
4
5
6
7
8
10
9
11
12
13
14
15
16
17
18
19
PART
803-566
NO.
801 -940
100-21 4
100-527
800-447
177-144
800-444
802-845
803-m
801 -020
172-981
176-250
803-560
801 -376
803-576
803-769
801-91 1
803-575
803-574
803-770
803-088
803-517
100-21
4
100-1 33
DESCRIPTION QTY
BELT GUARD
SCREW. CaD. hex
hd.
1
WASHER, Lock, 5/16
WASHER, Flat, 5/16 5
CHASSIS 5 1
LABEL, Warning. belt guard 1
SCREW, Cap, hex
hd, 3/8-16x5 2
BRACKET, Rail Stiffener 1
FOOT, Rubber 4
NUT. Lock 1/2-13
2
LABEL, Waming,~chassis
LABEL, Warning, chassis 1
BRACKET, Rail Stiffener 1
1
~
HUB. Motor. 5 hD
Afor 800-902 only) 1
(for 800-903 only)
SHEAVE, Motor 1
(for 800-902 only)
SHEAVE, Motor 1
(for 800-903 only)
HUB, Pump 1
(for 800-902 only)
HUB, Pump 1
Afor 800-903 only)
S EAVE, Pump 1
(for 800-902 only)
SHEAVE, Pump 1
(for 800-903 only)
LABEL, Keep From Freezing 1 1
WASHER, Lock, 5/16
W
r SHER, 800-902 Lock, 3y8 )
4
(for 800-903 only) 4
H B, Motor, 7-1/2 hp
REF
20
NO.
21
22
23
25
24
26
28
27
29
30
32
31
33
34
35
36
37
38
39
40
41
PART
NO.
100-527
100-023
803-579
803-580
801 -941
803-593
100-023
100-133
803-761
802-784
803-762
803-396
803-591
803-577
800-445
801 -787
802-084
803-791
803-599
800-687
800-688
159-239
803-141
803-142
801 -274
803-872
802-096
DESCRIPTION
WASHER, Flat, 5/16
WASHER, Flat, 3/8
(for 800-902 only)
M
IY TOR, 800-903 5hp,TEF Only ,
3 phase (for 800-902 only)
3 phase (for 800-903 only)
(for 800-902 only)
SCRW, Cap, hex hd
(for 800-903 only)
WASHER, Lock, 318
BELT, Drive (for 800-902 only
BELT, Drive (for 800-903 on14
WASHER, Lock, 1/2
WASHER, Flat, 112
DECAL, WamingKaution
BRACKET, Pump Support
PUMP, 10 GPM (see page 16)
NIPPLE, 3/4x2
TEE, 314
PLUG, Plastic, 3/4
PLUG, Plastic, 1/2
UNLOADER,
700 PSI
UNLOADER, lo00 PSI
(for 800-902 only)
NIPPLE, Hex 3/8x1
2
(for 800-903 only
MOTOR, 7-1/2
hp, TEFC,
SCREW, Cap, hex hd
WASHER, Flat, 3/8
NIPPLE,
Br= ex
112 NPSM x 318 NPT
LABEL, Graco G
BUSHING, Hex, 3/8x1/4
BUSHING, Hex, 1/2x3/4
QTY
4
4
1
1
4
4
2
2
2
2
2
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
5 hp Wlrlng Diagram
230 Volt, 3 Phase
308-533 13

PARTS DRAWING
800-905 Hydra-Clean@ 1020 Pressure Washer
800-904 Hydra-Clean@ 720 Pressure Washer
For wiring diagrams, see pages
13 and 15
I \
40
I
I
I
I
14 308-533

PARTS LIST
800-904 Hydra-Cleans 720 Pressure Washer
800-905 Hydra-Clean@ 1020 Pressure Washer
REF
NO.
2
1
4
3
5
6
7
8
10
9
11
12
13
14
15
16
17
18
19
NO.
PART
803-566
801 -940
100-21 4
100-527
800-447
177-144
8w-444
802-845
803-777
801 -020
172-981
803-560
176-250
603-767
801 -623
803-878
803-879
803-575
803-574
603-880
803-776
803-517
100-133
802-784
DESCRIPTION
BELT GUARD
SCREW, Cap, hex
hd,
WASHER, Lock, 5/16
WASHER, Flat, 5/16
CHASSIS
5/16-18X3/4
LABEL, Warning, belt guard
BRACKET, Rail Stiffener
FOOT. Rubber
SCREW, Cap, hex hd, 3/8-16X5
NUT,
Lock 1/2-13
LABEL. Wamina. chassis
LABEL; Warnin& chassis
BRACKET. Rail Stiffener
HUB, Motor, 10
hp
HUB, Motor, 15 hp
SHEAVE, Motor
SHEAVE, Motor
HUB, Pump
HUB, Pump
SHEAVE, Pump
SHEAVE. Pumo
(for 800-904 only)
(for 800-905 only)
(for 800-904 only)
(for 800-905 only)
(for 800-904 only)
(for 800-905 only)
(for 800-904 only)
(for 606-905 only)
LABEL, Keep From Freezing
WASHER, Lock, 3/8
WASHER, Lock,
1&
(for 800-905 only)
(lor 800-004 on1 )
QTY
1
5
5
5
1
1
1
2
4
'1
2
1
1
1
1
1
1
1
1
1
1
1
4
6
NO.
REF
20
21
22
24
23
25
26
27
28
30
29
31
32
33
34
35
36
37
38
39
40
PART
NO.
100-023
803-591
803-581
803-582
803-593
803-592
100-023
803-677
803-591
803-396
803-578
803-585
803-586
803-791
803-599
800-687
800-688
21 4-956
168-595
202-965
157-191
803-872
100-133
802-784
800-446
DESCRIPTION
WASHER, Flat, 3/8
WASHER, Flat, 1/2
(for 800-904 only)
M TOR, 10 hp, TEFC,
MOTOR, 15 hp, TEFC,
3 phase (for 800-904 only)
SCREW, Cap, hex hd
3 phase (for 800-905 only)
SCREW, Cap, hex hd
(for 800-904 only)
WASHER, Flat, 3/8
(for 800-905 only)
WASHER, Lock, 3/8
BELT, Drive
WASHER, Lock, 1/2
WASHER, Flat, 1/2
DECAL, Warning/Caution
BRACKET, Pump Support
PUMP,
20 GPM (see page 18)
NIPPLE, Hex, 1
TEE, 1
PLUG, Plastic,
1
PLUG, Plastic, 1/2
UNLOADER, 700 PSI
UNLOADER, loo0 PSI
(for 800-904 only)
ADAPTER, Hex 3/4X1/2
(lor 800-905 only)
HOSE, Bypass
SWIVEL, 1x3/4
NIPPLE, Hex, 1/2x3/4
LABEL, Graco
G
S,, 800-905 Only)
QTY
4
4
1
1
4
4
2
2
2
2
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
7.5, 10 & 15 hp
Wring Diagram
230 Volt, 3 Phase
308-533
15

PARTS DRAWING
803-577 Pump Assembly, 10 GPM
16 308-533

REF
NO.
2
1
8
9
11
10
12
13
14
15
16
17
19
18
20
22
21
24
23
25
26
28
27
29
30
PART
NO.
REF
803-657 SCREW, Cap, socket hd.
DESCRIPTION
QTY NO.
8
803-639 WASHER, Lock 16
31
KIT 62 VALVE ASSEMBLY
33
6
803-630 O-RING
34
6
35
803-61 6 COVER, Valve
803-655 SCREW, Cap, socket hd.
2
8
36
37
KTT
37 SEAL, Oil
803-606 CRANKCASE
3 38
1
801-475 DIPSTICK
1
39
41
1 42
KIT74 O-RING 3
3 43
44
3
3
45
46
3 47
1 48
803-612 COVER, Crankcase 1 49
803-608 ROD, Connecting 3 50
803-294 SCREW, Cap, socket hd.
6 51
6 52
802-345 GAUGE, Sight
1 53
1 54
2 55
803-651 SCREW, Cap, socket hd. 9
803-615 GASKET, Cover
KIT 74 SCREW, Piston
KIT 74 RING, Backup
KIT74 WASHER, Flat
803-609 PISTON
803-607
CRANKSHAFT
801-652 WASHER, Lock
802-344 O-RING
801-484 PLUG, Hex hd.
803-645 PIN, Wrist
3
PART
803-610 GUIDE, Piston 3
803-641 WASHER, Flinger
803-653 SCREW, Cap, hex hd.
3
803-605 COVER, Crankcase
803-613 SPACER
2
KIT 32 SEAL, Oil
1
803-632 O-RING
1
803-638 BEARING, Ball
2
2
803-633 BUSHING 3
802-317 WASHER, Lock 4
802-305 SCREW, Cap, socket hd. 4
803-643 WASHER, Flat
803-647 PLUG, Hex hd. 1
1
803-61 1 HEAD, Pump
803-289 WASHER, Flat 1
1
KIT 39 RETAINER, Packing
6
6
KIT 39 RING, Head
KIT 38,39 PACKING 6
6
803-635 KCI
KIT 39 RING, Intermediate 3
1
802-357 RING, Retaining 1
803-614 SPACER
1
NO. DESCRIPTION am
a
KIT 39 O-RING
Repair Kit Ref W.
Part No. No. Description Incl.
803-660 37 SEAL. Oil 2
Seal I I
Oil Seal
Packina
Packing & RETAINER,
Retainer Packing
RING. Head
PACKING
Valve
Repair
Plunger O-RING
SCREW, Piston
RING, Back-up
308-533 17

PARTS DRAWING
803-578 Pump Assembly, 20 GPM
/-
/-
/-
22
27
18 308-533

PARTS LIST
803-578 Pump Assembly, 20 GPM
REF
NO.
2
1
8
9
10
11
12
13
14
16
15
17
19
18
21
20
22
23
24
25
26
28
27
29
PART
NO. DESCRIPTION
803-659 SCREW, Cap, socket hd.
803-640 WASHER, Lock
KIT43 ' VALVE ASSEMBLY
803-631 O-RING
803-650 CAI? Valve
803-624 COVER, Crankcase
KIT
44 SEAL, Oil
803-617 CRANKCASE
803-648 DIPSTICK
803-627 GASKET, Cover
KIT 74 SCREW, Piston
KIT 74 RING, Backup
KIT 74 WASHER, Flat
KIT 74 O-RING
803-621 PISTON
803-618 CRANKSHAFT
803-625 COVER, Crankcase
803-620 ROD, Connecting
803-656 SCREW, Cap, socket hd.
802-345 GAUGE, Sight
801-484 PLUG, Hex hd.
803-652 SCREW, Cap, socket hd.
803-639 WASHER, Lock
802-344 O-RING
QTY
8
12
6
6
6
1
3
'1
1
3
1
3
3
3
3
1
3
1
6
6
2
1
10
2
NO.
REF
30
31
32
33
35
34
36
37
38
40
41
42
43
44
45
47
46
48
50
49
51
53
52
54
PART
803-646 PIN, Wrist
NO. DESCRIPTION
803-629 GUIDE, Piston
803-641 WASHER, Flinger
KIT 79,80 RING, Backup
803-623 COVER, Crankcase
803-654 SCREW, Cap, hex hd.
803-628 SHIM
802-353 O-RING
803-637 BEARING, Tapered Roller
803-649 PLUG, Hex
hd.
803-658 SCREW, Cap, socket hd.
803-647 PLUG, Hex hd.
803-643 WASHER, Flat
803-622 HEAD, Pump
KIT 80 RETAINER, Packing
KIT 79,80 PACKING
KIT
80 RING, Head
KIT 80 RING, Intermediate
802-357 RING, Snap
KIT 32 SEAL, Oil
803-634 BUSHING
803-644 WASHER, Flat
KIT
80 O-RING
803-636 KEY
QTY
3
3
3
3
8
2
1
2
2
3
4
1
1
1
1
3
1
3
6
6
3
1
1
1
Repair KR
Part No.
Oil Seal
Valve
803-660
803-664
803-665
Oil Seal
Repair
Plunger
803-667
803-668
Packing
Packing
&
Retainer
803-669
-
Ret
No.
54
-
-
8
12
16
18
17
19
32
49
32
47
48
49
50
51
-
-
-
-
RING, Back-up
WASHER. Flat
RING, Back-up
1; 1
PACKING
RING, Back-up
RETAINER,
O-RING
Packing
PACKING
RING. Head
I: I
RING,
Intermediate
I1 I
~
I I
308-533 19

ACCESSORIES
(Must be purchased separately)
DOWNSTREAM CHEMICAL INJECTOR KIT BACKFLOW PREVENTOR 801-133
800-117 BRASS UP TO
5.5 GPM (21 LPM)
800-425 BRASS 5.6 TO 10.8 GPM (21 TO 41
Prevent back-up of contaminated water into fresh
supply. Install upstream of pump.
INLET PRESSURE REGULATOR 800-258
coupler for hose connection and adjustable nozzle.
Includes 803-350 spray gun, 32 spray wand, quick
maximum.
Regulates inlet water pressure
to 60 psi (4 bar)
Includes
800-222 stainless steel spray gun, 32
HOSE ASSEMBLY WITH QUICK COUPLERS stainless steel spray wand and stainless steel threaded
3/8” diameter
x 50 foot x 4OOO psi (276 bar) permanently
coupled hose with 801-568 and 801-569 3/8” quick
couplers.
800-042
800-375
connections for hose and spray tip.
TECHNICAL DATA
Model 800-902 Model 800-903 Model 800-904 Model 800-905
Motor (Totally Enclosed 5.0 hp, 3 phase 7.5 hp. 3 phase 10.0 hp, 3 phase 15.0 hp. 3 phase
:an Cooled)
Ilectrical Service 230 v011/20 amp/ 230 volV20 amp/
3 phaseor 230 volt/30 amp/ 3 phase or
230 voItl40 amp/
3 phase
M 3 phase or
Acrylonitrile and Buna-N wver and tube
Bypass Hose Synthetic yam and EPDM
Pressure Washer
(including fittings) Anodized aluminum, Aluminum
or Bronze alloys, Brass, Copper, Nylon- composite.
Thermoplastic. Carbon Steel, Zinc with
or without Yellow Chromate Plate
Ceramic. Buna- on Phenolic, 303,304, and 316 Stainless Steel, P de-12
is a registered trademark of the DuPont Companfl
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE
PTFE