WARNING: Alerts user to avoid or correct conditions
could cause bodily injury
that
CAUTION:
could
Alerts
user to avoid or correct conditions that
cause damage to the equipment.
.
NOTE:
Identifies helpful procedures and information.
308–530
Page 3
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
WARNING
General Safety
This
pressure washer
Spray from the gun, leaks or ruptured components can
inject fluid through your skin and into your body and
extremely serious bodily injury including the need
cause
for amputation. Also, fluid injected or splashed into the
or on the skin can cause serious damage.
eyes
NEVER
part of the body .
spray
ALWAYS
cleaning
NEVER
body.
Be
before
point the
tip.
follow the
or servicing any part of the sprayer
try to stop or deflect leaks with your hand or
sure equipment safety devices are operating properly
each use.
generates very high fluid pressure.
spray gun or wand at anyone or at any
NEVER
put hand or fingers over the
Pressure Relief Procedure
.
,
before
Medical Treatment
If any fluid appears to penetrate your skin, get
EMERGENCY MEDICAL TREATMENT AT ONCE. DO
TREA
NOT
what
NOTE TO PHYSICIAN:
traumatic
surgically as soon as possible.
treatment
with
bloodstream.
reconstructive
T AS A SIMPLE CUT. T
fluid was injected.
Injection in the skin is a
injury
.
It is important to treat the injury
to research toxicity
some exotic coatings injected directly into the
Consultation with a plastic surgeon or
hand surgeon may be advisable.
ell the doctor exactly
Do not delay
. T
oxicity
is a concern
Pressure Relief Procedure
To
reduce the risk of serious bodily injury
injection
follow this procedure whenever you stop spraying for
more than 10 minutes, when shutting down, and before
checking
1.
2. T
3.
4.
5. Disengage
6. Before
and splashing in the eyes or on the skin, always
or repairing any part of the system.
Engage the trigger safety latch.
urn the sprayer of
Remove the ignition cable from the spark plug.
Shut of
to relieve pressure, and then engage the trigger
safety
of the unit, disconnect the water supply and turn off
the
f the water supply
the trigger safety latch and
latch again.
long–term (overnight)
fuel supply valve.
f.
.
storage or transporting
, including
trigger the gun
fluid
Spray Gun Safety Devices
Be sure all gun safety devices are operating properly
each use. Do not remove or modify any part of the
before
gun; this can cause a malfunction and result in serious
injury
bodily
SAFETY LA TCH: Whenever you stop spraying for a
moment,
or
“safe”
properly set the safety latch can result in accidental
triggering
SPRAY TIP SAFETY : Use extreme caution when
cleaning
spraying, engage the gun safety latch immediately.
ALWAYS
remove the spray tip to clean it.
then
.
always set the gun safety latch in the engaged
position, making the gun inoperative. Failure to
of the gun.
or changing spray tips. If a spray tip clogs
follow the Pressure Relief Procedure and
while
MOVING PARTS HAZARD
Moving
parts.
operating
NEVER
and interlocks installed and functioning. Follow the
Pressure Relief Procedure before checking or
parts can pinch or amputate fingers or other body
KEEP CLEAR
the pressure washer
operate the pressure washer
of moving parts when starting or
.
without all guards
servicing the pressure washer to prevent discharging
pressure fluid from the gun.
high
W
arnings continued on page 4.
3308–530
Page 4
EQUIPMENT MISUSE HAZARD
General Safety
Any
misuse of the
as overpressurizing, modifying
chemicals and fluids, or using worn or damaged parts,
can cause them to rupture and result in fluid injection,
splashing in the eyes or on the skin, or other serious
injury
bodily
NEVER
so
CHECK
replace
ALWAYS
clothing.
chemical manufacturer’s literature for recommendations
on
alter or modify any part of this equipment; doing
could cause it to malfunction.
all spray equipment regularly and repair or
worn or damaged parts immediately
wear protective eyewear and appropriate
If using a chemical injector
additional protective equipment, such as a respirator
pressure washer or accessories, such
parts, using incompatible
, fire, explosion or property damage.
.
, read and follow
the
.
HOSE SAFETY
High
pressure fluid in the hoses can be very dangerous. If
the
hose develops a leak, split or
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 HA VE STRAIN RELIEFS
BOTH ENDS.
ON
from kinks or bends at or close to the coupling, which can
result
in hose rupture.
TIGHTEN
High
high
all fluid connections securely before each use.
pressure fluid can dislodge a loose coupling or allow
pressure spray to be emitted from the coupling.
The strain
rupture due to any kind
reliefs help protect the hose
System
This sprayer can develop high operating pressures. Be
sure
to withstand the maximum working pressure of this
sprayer.
pressure of any component or accessory used in the
system.
Pressure
that all spray equipment and accessories are rated
DO NOT
exceed the maximum working
Chemical Compatibility
BE
SURE
that all chemicals used in the chemical
are compatible with the wetted parts of the hose, gun,
and tip, as given in the T
wand
cover). Always read the chemical manufacturer’s
literature before using any chemical in this pressure
washer.
NEVER
entire hose for cuts, leaks, abrasion, bulging cover , or
damage or movement of the hose couplings. If any of
these
NOT
tape
the
use a damaged hose. Before each use, check
conditions exist, replace the
try to recouple high pressure hose or mend it with
or any
other device. A repaired hose cannot contain
high pressure fluid.
echnical Data (inside back
hose immediately
HANDLE AND ROUTE HOSES CAREFULL Y.
pull on hoses to move the pressure washer. Do not use
chemicals which are not compatible with the inner tube
and cover of the hose.
temperatures
(–40_ C).
above 200
DO NOT
_ F
expose Graco hose to
(93
_ C)
or below –40
injector
.
DO
Do not
_ F
FUEL AND EMISSION HAZARDS
NEVER
The
on
tank
NEVER
contains carbon monoxide, a poisonous, odorless,
fill the fuel tank while the unit is running or hot.
fuel used in this unit is combustible and when spilled
a hot surface can ignite and cause a fire.
slowly to avoid spilling.
operate the unit in a closed building. The exhaust
ALWAYS
fill
invisible gas which can cause serious injury or death if
inhaled.
NEVER
Tampering with this adjustment can damage the
pressure
alter the throttle setting, which is factory set.
washer and will void the warranty
.
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.
4308–530
Page 5
INSTALLATION
2540
HIGH
PRESSURE
HOSE
CONNECTION
CONNECTION 3/4”
INLET WATER
GARDEN HOSE
1535
HIGH PRESSURE
HOSE
CONNECTION
INLET WATER
CONNECTION 3/4”
GARDEN HOSE
QUICK
COUPLER
2040
HIGH PRESSURE
HOSE CONNECTION
INLET WATER
CONNECTION 3/4”
GARDEN HOSE
Figure
1
Check for Shipping Damage
Check
the unit for any damage that may have occurred
shipping. Notify
the carrier immediately
if there is any
damage.
Set Up
If
you are using a downstream chemical injector
between
using
Connect
the pump unloader and the high pressure hose,
the quick couplers provided.
the high pressure hose between the pump
, install it
outlet
and the gun inlet. Both of these connections are made
quick couplers.
with
CAUTION
Up to 100 ft (30 m) of high pressure hose may
be used.
performance,
if
used.
Install the appropriate spray tip on the wand. See
Installing and Changing Spray T ips. If you are using a
sandblaster kit, see its separate manual for installation
instructions.
Longer hoses may affect sprayer
and chemical injector
performance,
in
SPRAY
GUN
QUICK
COUPLER
SPRAY
HOSE
Connect to Water Supply
CAUTION
Before attaching to the water supply, check your
local plumbing code regarding
to the water supply . A backflow preventer , P/N
801–133, is available to prevent backflow of
contaminated water into the fresh water supply .
it upstream from the pump.
Install
If inlet water pressure is over 60 psi (4.1 bar) a
regulating water valve, P/N 800–258, must be
installed
at the garden hose connection.
Do not exceed 160 _ F (70 _ C) inlet water
temperature.
Connect
a hose with at least a 3/4 inch (19 mm) ID from
the water supply to the unit’
The supply hose should not be more than 50 ft (15 m)
long.
NOTE:The water source at the unit
minimum
Technical
flow rate equal to that of the unit (see
Data, inside back cover).
cross–connection
s 3/4 inch garden hose inlet.
must
have a
5308–530
Page 6
STARTUP
Always
is
1.
NOTE:
2.
use this startup procedure to ensure that the
started safely and properly
Check oil levels.
Engine:
as
Pump:
genuine
Gear
as necessary . The 1535 uses the oil in pump
crankcase.
Check fuel level.
Add SAE 30 or 10W–30 weight detergent oil
necessary
Reducer (2040 and 2540): Add SAE 90 gear oil
All
shuts
certain level. If the unit stops unexpectedly,
check
oil
.
Add SAE 20 or 30 weight non–detergent oil or
Cat pump oil as necessary
units are equipped with a low–oil sensor that
the engine of
both the oil and the fuel levels. Check the
level each time the unit is refueled.
.
.
f if the oil level
falls below a
WARNING
DO NOT
engine could cause a fire. Use only fresh, clean
regular or unleaded gasoline. Close the fuel
shutoff
3. T
refuel a hot engine. Refueling a hot
valve during refueling.
urn on the water supply
.
CAUTION
Never
run the unit dry
will result. Always be sure the water supply is
completely
turned on before operating.
. Costly damage to the pump
unit
If the engine is cold, completely close the engine
Grasp the starter rope, brace one foot on the
choke.
pressure washer chassis and pull rope rapidly and
firmly. Continue holding the rope as it returns. Pull
and return the rope until the engine starts. In cool
the
weather,
to 30 seconds before opening it to keep the engine
running. Otherwise, open the choke as soon as the
engine
If the engine is warm, leave the choke open, or just
partly close it. Start the engine as described in the
preceding
the
choke completely
choke may have to be kept closed for 10
starts.
paragraph. When it starts, be sure to open
.
CAUTION
On
recoil start engines, never let the starter rope
return by itself. It could jam the recoil system.
7.
ALWAYS
whenever
reduce the risk of fluid injection or splashing in the
eyes
accidentally.
ALWAYS
8.
costly
engage the gun’s trigger safety latch
you stop spraying, even for a moment, to
or on the skin if the gun is bumped or triggered
observe the following
damage to the pressure washer
CAUTIONS
.
CAUTION
DO
NOT
allow
the pressure washer to idle for more
than 10 minutes. Doing so may cause the
recirculating water to overheat and seriously
damage
will not be spraying or cleaning at least every 10
minutes. If heated inlet water is used, reduce this
time further.
the pump. T
urn of
f the pressure washer if it
to avoid
4. Trigger the gun until water sprays from the tip
indicating
5. Open the fuel shutoff valve. Be sure the spark plug
ignition
those
put
in
the “run” position.
6.
Start the engine.
NOTE:For easier starting, have one person start the
that the air is purged from the system.
cable is pushed firmly onto the
units equipped with an
the
switch in the “on” position and put the throttle
pressure
the
washer while
spray gun.
ignition shutof
another person triggers
spark plug. On
f switch,
DO NOT
damage
turned
DO
NOT
water screen removed. This screen helps keep
abrasive sediment out of the pump, which could
clog
DO NOT
may
9. See the chemical injector or sandblaster kit manual
for
are
run the pump dry , which will quickly
the pump. Be sure
on before starting the pump.
operate the pressure washer
or scratch the pump. Keep this screen clean.
pump caustic materials; such materials
corrode the pump components.
detailed cleaning information if these accessories
used.
the water supply is fully
with the inlet
6308–530
Page 7
Trigger Safety Latch
WARNING
To reduce the risk of serious bodily injury,
including fluid injection, splashing in the eyes or
on the skin,
latch whenever spraying stops, even for a
moment.
In the engaged position, the trigger safety latch
prevents the gun from being triggered
accidentally
Be sure the latch is pushed fully down when
engaging
triggered.
ALWAYS
by hand or if it is dropped or bumped.
it or it cannot
See Figure 2.
engage the trigger safety
prevent the gun from being
Installing and Changing Spray Tips
WARNING
To
reduce the risk of serious bodily injury
fluid injection or splashing in the eyes or onto the
skin, use extreme caution when changing spray
ALWAYS
tips.
1.
Follow the
2. Point the gun and wand away from yourself and
anyone
3. Without
back the quick coupler ring (B). Remove the old tip
and/or install a new one, and then release the ring.
See
4. Be sure the tip is secure before starting to spray
again.
follow the procedure below
Pressure Relief Procedure
else.
holding your hand over the spray tip (A), pull
Figure 3.
, including
.
.
TRIGGER SAFETY LA
TRIGGER SAFETY LA
DISENGAGED
Figure 2
TCH SHOWN ENGAGED
TCH SHOWN
5. Tip
holding holes are provided on the chassis.
CAUTION
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
Figure 3
mounted in the quick coupler
.
B
A
7308–530
Page 8
SHUTDOWN, FLUSHING
AND STORAGE
WARNING
Pressure
To
reduce the risk of serious bodily injury
fluid
skin, always follow this procedure whenever you
stop spraying for more than 10 minutes, when
shutting down, and before checking or repairing
any
Relief Procedure
, including
injection and splashing in the eyes, or on
part of the system.
the
MAINTENANCE
Observing regular maintenance intervals helps ensure
that you get maximum performance and life from the
pressure
There
reducer (if used). After changing the oil in these
components
the
If the unit is operating in dusty conditions, these
maintenance
washer
is a break–in period for
interval between required changes is longer
.
the engine, pump and gear
following their respective break–in periods,
.
checks should be made more often.
1.
Engage the trigger safety latch.
2. T
urn the sprayer of
3. Remove
4. Shut
5. Disengage
the
the
6. Before long–term (overnight) storage or
transporting of unit, disconnect the water
supply,
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.
again
NOTE:An anti–freeze flush kit, P/N 802–327, is
the ignition cable from the spark plug.
of
f the water supply
the
gun to relieve pressure, and then engage
trigger safety latch again.
and turn of
Flush the pressure washer before using it
to remove the anti–freeze.
available
to make flushing easier
f.
.
trigger safety latch and trigger
f the fuel supply valve.
.
CAUTION
If
water does freeze in the
it
in a
warm room before trying to start it.
pour hot water on or into the pump; it may crack
ceramic plungers!
the
2. After each use, wipe all surfaces of the pressure
washer
3. Perform the appropriate maintenance. See
maintenance
with a clean, damp cloth.
chart.
pressure washer
DO NOT
, thaw
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
proceeding.
before
Interval
Daily
After first 5
hours of
operation
Each 25 hours
of operation
After first 50
hours of
operation
Each 100
hours of
operation
or 3 months
Each 500
hours of
operation
or 6 months
What to do
Clean water inlet screen and
filter
. Check engine and pump oil
levels. Fill as necessary
gasoline level. Fill as necessary
Change engine break–in oil.
Drain oil when warm. Use SAE
30 or 10W–30 detergent oil.
Clean and remove air cleaner
foam. Wash with water and
detergent. Dry thoroughly
with oil and squeeze to distribute
oil.
Change pump break–in oil. Use
SAE 20 or 30 non–detergent oil
or genuine Cat pump oil.
Change gear reducer oil. Use
SAE 90 gear oil on 2040 and
2540. The 1535 uses the oil in
pump crankcase.
Clean or replace paper air
cleaner cartridge. T
remove dirt. Change engine oil.
Use SAE 30 or 10W–30
detergent oil.
Change pump oil. Use SAE 20 or
30 non–detergent oil or genuine
Cat
pump oil. Change gear
reducer oil on 2040 and 2540.
Use SAE 90 gear oil. The 1535
uses the oil in pump crankcase.
. Check
. Rub
ap gently to
.
8308–530
Page 9
TROUBLESHOOTING CHART
To
reduce the risk of serious bodily injury
moving
parts, always follow the
Pressure Relief Procedure W
WARNING
, including fluid injection,
splashing in the eyes or on the skin or injury from
arning
before proceeding.
PROBLEM
Engine will not start or
is hard to start
Engine misses or
lacks power
pressure and/or
Low
pump runs rough
W
ater leakage from
under pump manifold
W
ater in pump
Frequent or premature
failure of the packings
Strong surging at the
inlet and low pressure
on the discharge side
Oil leakage between
the gear reducer cover
and case
Oil leakage between
the gear reducer cover
and the pump
Oil leakage between
the gear reducer case
and the engine
CAUSESOLUTION
No gasoline in fuel tank or carburetor
Low oil
Start/Stop switch in Stop position.
W
ater in gasoline or old fuel.
Choked improperly
Dirty air cleaner filter
Spark plug dirty
Spray gun closed.
Partially plugged air cleaner filter
Spark plug dirty
W
orn or wrong size tip.
Inlet filter clogged.
W
orn packings, abrasives in water or
natural wear
Inadequate water supply
Fouled or dirty inlet or discharge valves.
Even a small particle can cause the valve
to stick.
Restricted inlet.
W
orn inlet or discharge valves.
Leaking high pressure hose.
orn packings.
Humid air condensing inside crankcase.
W
orn packings.
Oil seals leaking.
Scored, damaged or worn plungers.
Abrasive material in the fluid being pumped.
Inlet water temperature too high.
Overpressurizing pump.
Excessive pressure due to partially plugged
or damaged tip.
Pump running too long without spraying.
Running pump dry
Foreign particles in the inlet or discharge
valve or worn inlet and/or discharge valves.
W
orn gasket.
W
orn oil seals and/or o-ring.
W
orn oil seal.
. Flooded engine.
.
, wrong gap or wrong type.
, wrong gap or wrong type.
.
.
.
.
.
Fill the tank with gasoline, open fuel shut of
Check fuel line and carburetor
Add to proper level.
Move switch to start position.
Drain fuel tank and carburetor
spark plug.
Open choke and crank engine several times to clear
out gas.
Remove and clean.
Clean, adjust the gap or replace.
T
rigger spray gun.
Remove and clean.
Clean, adjust the gap or replace.
Replace with tip of proper size.
Clean. Check more frequently
filter
Check
Check water flow rate to pump.
Clean inlet and discharge valve assemblies. Check
filter.
Check garden hose, may be collapsed or kinked.
Replace worn valves.
Replace high pressure hose.
Install new packings. See PUMP SER
Change oil as specified in MAINTENANCE.
Install new packings. See PUMP SER
Install new oil seals. See PUMP SER
Install new plungers. See PUMP SER
Install proper filtration on pump inlet plumbing.
Check water temperature; may not exceed 160
Do not modify any factory–set adjustments. See
EQUIPMENT MISUSE HAZARD.
Clean or replace tip. See Installing and Changing
Spray Tips.
Never run pump more than 10 minutes without
spraying.
37402–278
38803–083
39801–090
40801–640 TIP
41801–667 TIP
42800–128
43800–697
44800–129
45801–907 W
46801–905
47156–849
48801–709
49800–655
50802–627
51803–869
52801–523
53801–622
54800–115VAL
55801–614 TIP
56801–111NUT
57801–110
58804–051 FILTER/STRAINER1
59801–615 TIP
60801–367
61804–251 BRACKET
62804–073
63800–377
64804–246PUM
65804–249
66803–301
67801–137 KEY
ART
, Rubber
TIP ASSEMBLY, 0005
(incl. 39, 40)
TIP ASSEMBLY, 1505
(incl. 39, 41)
PLUG, Plastic
LABEL, Keep From Freezing
COUPLER, Male 1/4
, Spray 0005
, Spray 1505
TIP ASSEMBLY, 2505
(incl. 39, 55)
PUMP & GEAR REDUCER
ASSEMBL
TIP ASSEMBLY, 4005
(incl. 39, 59)
ASHER, Flat
ADAPTER, 3/8 G x 3/8 NPT
NIPPLE, Hex 3/8
PLUG, Square
UNLOADER, 2500 psi
NIPPLE, Hex 3/8 x 1/4
HOSE, Bypass
NIPPLE, 1/2 x 2
CROSS, 1/2
VE, Thermal Relief
, Spray 2505
, Garden Hose
ADAPTER, Garden Hose
, Spray 4005
BUMPER, Rubber
ADAPTER, 1/2
HOSE ASSEMBLY, w/Couplers
(incl. 13, 14, 15)
P A
GEAR REDUCER ASSEMBL
(see page 19)
LABEL, Model 2540
, Square 1/4 x 2
Y (incl. 64, 65)
, Support
SSEMBL
Y (see page 2
Y
4
1
1
1
1
4
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
4) 1
1
1
1
15308–530
Page 16
GEAR REDUCER SERVICE (Model 1535)
To
reduce the risk of serious bodily injury
moving
parts, always follow the
Pressure Relief Procedure W
, including fluid injection,
WARNING
splashing in the eyes or on the skin or injury from
arning
on page 2 before proceeding.
Replacing the O–Ring (5)
1. Remove the four bolts, lockwashers and washers.
Pull the pump and gear reducer assembly of f the
engine.
2. Drain the gear reducer oil by placing a container
under it and removing the drain plug with a 22 mm
wrench.
3. Remove the four screws and lockwashers with a
6 mm wrench and pull the gear case of f the gear
cover.
4. Remove
case
and
5. Follow
Reducer
Replace the o–ring (16) if damaged.
the old o–ring (5). Clean the gear cover and
surface. Lightly coat the new o–ring with grease
install it in the gear case.
steps 4 through 6 under
if this is all the service required.
Assembling the Gear
Replacing the Gasket (1)
1. Follow steps 1 through 3 under Replacing the
O–Ring.
Replacing the Oil Seal (10)
NOTE:The
1.
Follow steps 1 and 2 under Replacing the O–Ring.
2. Pry
damage
3. Wipe the inner surface of the gear case clean, then
lightly coat it with grease. Place the oil seal into the
gear
of
the seal, to push the seal into the case until its top
surface
4. Follow
Reducer
oil seal MUST be replaced if removed.
the oil seal out of the gear case. Be careful not to
the gear case.
case. Use a socket, placed against the surface
is past the ridge in the bore.
steps 4 through 6 under
if this is all the service required.
Assembling the Gear
Assembling the Gear Reducer
1. Make
2. Align
sure the gasket is properly placed
cover. Refer to step 4 under Replacing the Gasket.
install the gear cover on the pump shaft.
Then,
the holes in the gear cover with the
pump. Apply low strength Loctite (blue) on the
screw threads and secure the cover with the four
screws and lockwashers. T ighten them oppositely
and
evenly
.
on the gear
holes in the
2. Using a 4 mm wrench, remove retaining bolt,
lockwasher, flat washer and pull the gear (4) off the
with a gear puller
pump
3. Remove the four screws and lockwashers from the
cover
gear
4. Remove the gear cover and gasket (1) from the
pump. Clean the gear cover and pump surface.
Lightly
install
5. Follow the instructions under Assembling the Gear
Reducer
.
coat both
it on the gear cover
if this is all the service required.
sides of the gasket with grease and
.
.
3. Align the gear’s slot with the key on the pump shaft
and slide the gear onto the shaft, up to the pump’ s
T
shoulder.
flat
washer to lock the gear on the shaft.
4. Make sure the o–ring is in place. Refer to step 4
under
the cover, aligning the holes, and secure it with the
four screws and lockwashers. Tighten them
oppositely
5. Grease
key on the engine shaft and slide the gear reducer
onto
6. Secure the gear reducer to the engine with the four
bolts
AINER, Packing, front
ROD, Assembly Connecting
ROD, Plunger
PIN, Rod
SEAL, Oil, plunger
2
1
1
1
1
1
1
1
1
1
12
12
4
1
2
1
8
3
3
3
3
3
REF P
NO.NO.DESCRIPTIONQTY
26804–121 W
27804–208 RET
28804–157
29804–129
30804–133 GASKET
31804–234
32801–038
33801–039
34801–040 RET
35804–214 W
36
37
38
39804–207 RET
40
41804–232 SCREW
1. Remove the four (4) socket head bolts and spring
washers
2. Support the discharge manifold from the underside
and tap with a soft mallet to separate from the inlet
manifold.
3. Carefully place discharge manifold on working
surface
4. From
chambers
and outer o–rings. These adapters are not held
securely
manifold
5. Next remove the valve seats, valves, springs and
retainers
6. From the three (3) larger diameter and deeper
discharge chambers remove the discharge valve
spacers
remain
A reverse pliers fitted into the center bore and
hooked onto the side ports of the spacer will assist
the
from end of manifold.
with valve chambers up.
the three (3) smaller diameter and shallow inlet
remove the inlet valve adapters with inner
in position and may fall out as the discharge
is removed.
from the inlet chambers.
with o–rings. These
with the discharge manifold as it is removed.
removal.
brass spacers generally
6. Examine
and replace if necessary . Lubricate o–rings and fit
into
7. Lubricate spacer and carefully press into valve
chambers
snaps
Reassembly: (INLET)
1. Place valve spring retainers into the shallow valve
chambers. They will rest on the machined ridge in
each
2. Insert
guide.
3. Inspect the valves for wear , ridges or pitting and
replace if necessary. Insert valves over the springs
with
4. Examine valve seat o–rings for wear and replace.
Lubricate and place o–rings on lip of retainers.
Carefully square o–rings in valve chamber to avoid
cutting
5. Examine valve seats for pitting, scale or ridges and
replace
side
both o–rings
grooves on outside of spacer
with small diameter side down until spacer
tightly into position.
chamber
valve springs into retainers
recessed (dish) side down.
o–ring when valve seat is installed.
down, so o–ring fits snugly into groove on seat.
.
if necessary
on the discharge valve spacer
.
over plastic center
. Install valve
seat with grooved
7. Next remove the valve seats, valves, springs and
retainers
NOTE:The inlet and discharge use the same
Reassembly:
1. With
insert the springs into the retainers over the plastic
center
2. Place valve spring retainers in deeper valve
chambers. They will rest on the machined ridge in
each
3. Examine
necessary. Install valves over the springs with
recessed
4. Examine valve seat o–rings for wear and replace.
Lubricate and place o–rings on lip of retainers.
Carefully square o–rings in valve chamber to avoid
cutting
5. Examine valve seats for pitting, scale or ridges and
replace
side
from the discharge chambers.
retainers,
o–rings and valve spacers/adapters are
different. Keep parts in order as they are
removed.
crankcase side of discharge manifold facing
guide.
chamber
o–ring when valve seat is installed.
if necessary
down, so o–ring fits snugly into groove on seat.
springs, valve seats and valves. The
(DISCHARGE)
up,
.
the valves for wear or pitting and replace if
(dish) side down.
. Install valve
seat with grooved
6. Examine the adapter inner o–rings and replace if
worn. Lubricate and install o–rings into inlet valve
adapters.
7. Examine the adapter outer o–rings and replace if
worn. Lubricate and install o–rings onto inlet valve
adapters.
8. Lubricate
Carefully
avoid
9. Replace discharge manifold over plunger ends
matching discharge valve spacers with inlet
chambers and press into position. T ap with a soft
mallet
10. Replace
Hand tighten each. Then torque per chart.
inlet valve adapter and press into
square inlet valve adapter into chamber to
cutting or extruding o–ring.
until completely seated in chambers.
all four (4) washers and socket head bolts.
chamber
Servicing the Seals
Disassembly:
1. With discharge manifold removed from the pump
remove the two (2) socket head bolts and spring
washers
2.
Rotate crankshaft to loosen inlet manifold.
3. Support
soft
from end of inlet manifold.
inlet manifold from
mallet to separate manifold from crankcase.
underside and tap with a
.
26 308–530
Page 27
4. With crankcase side of manifold down remove
hi–pressure
seals using a reverse pliers.
NOTE:Ceramic plunger can only be installed one
(front
direction
to back). Do not force onto rod.
5. Invert manifold so crankcase side is up and with
reverse
Reassembly:
1. Examine low pressure seal for seal wear or spring
failure
of inlet manifold up, lubricate seal and press into
valve chamber with garter spring down. Carefully
square
2. Examine hi–pressure seal for wear and replace if
necessary.
down, lubricate seal and press into chamber with
v–side
3. Rotate shaft so the two (2) outside plungers are
extended
4. Lubricate plungers and discharge valve adapter
o–rings.
5. Carefully line–up and join the inlet and discharge
manifolds
adapters
6. Replace
bolts
7. Then
and
8. Replace
and washers and hand tighten. Then torque per
chart.
9. Then torque the four (4) discharge manifold socket
head
pliers remove low pressure seals.
and replace if necessary. With crankcase side
seal into position.
Invert inlet manifold
up. Carefully square into position.
and lined–up.
by pressing the protruding discharge valve
into the inlet manifold seal chambers.
all four (4) discharge
and washers and hand tighten.
carefully
tap with soft mallet until flush with crankcase.
bolts per chart.
slip manifold assembly onto plungers
the two (2)
inlet manifold socket head bolts
with crankcase side
manifold socket head
3. Examine o–ring and back–up ring on plunger
retainer and replace if worn or cut. Lubricate o–ring
for ease of installation and to avoid damage to
o–rings.
NOTE:First install NEW copper gaskets on plunger
retainers,
4. Install short threaded end of stud into plunger
retainer.
5. Thread plunger retainer and stud assembly into
plunger
of
NOTE:Exercise
6. Rotate shaft so the two (2) outside plungers are
extended
7. Replace
bolts
8. Then
and
9. Replace
and washers and hand tighten. Then torque per
chart.
10. Then torque the four (4) discharge manifold socket
head bolts per chart.
rod and torque per chart. (Long threaded end
stud into plunger rod.)
retainer.
and washers and hand tighten.
carefully
tap with soft mallet until flush with crankcase.
then back–up rings and o–rings.
caution not to over torque the plunger
and lined–up. Then lubricate plungers.
all four (4) discharge
slip manifold assembly onto plungers
the two (2)
inlet manifold socket head bolts
manifold socket head
Servicing Crankcase Section
Servicing the Plungers
Disassembly:
1. Remove
2. Using a wrench loosen plunger retainers
approximately three (3) to four (4) turns.
3. Grasp
until
4.
Remove plunger retainer and copper gasket.
5.
Remove ceramic plunger from plunger rod.
6.
Remove barrier slinger from plunger rod.
Reassembly:
1. Replace barrier slinger if necessary and position
onto
2. Carefully examine ceramic plunger for scoring or
cracks
discharge and inlet manifold as described.
ceramic
plunger retainers with stud pop out.
plunger rod.
and replace if worn. Slip onto rod.
plunger and push towards crankcase
1. While
2.
3. Rotate
4. Examine crankshaft oil seal externally for drying,
5. Consult factory or your local distributor if crankcase
Pump Part
Plunger Retainer
Inlet Manifold
Bolts
Discharge
Manifold Bolts
inlet manifold, plungers and seal retainers are
removed,
Check oil level and for evidence of water in oil.
movement.
cracking
service is required.
examine crankcase seals for wear
crankshaft by hand to feel for smooth
or leaking.
T
orque Chart
Thread T
M51
M10
M10
ool Size
1 mm hex
8 mm a
8 mm a
Torque
80 in. lbs.
llen 13
llen
180 in. lbs.
2 in. l
.
bearing
bs.
27308–530
Page 28
PUMP
SER
VICE (Models 2040 & 2540)
Servicing the Valves
1. Remove
2. Examine the o–ring under the plug for cuts or
distortion and replace if worn. Lubricate new o–ring
before
3. Grasp
remove from valve chamber . Valve parts usually
separate
Note:A
4. Examine all valve parts for wear and replace with
preassembled valve assembly in service kit
containing
and
5. Grasp
immerse in oil and push into valve chamber. Be
certain
the hex valve plug.
installing.
valve
retainer by tab at the top with pliers and
during removal.
special tool will be needed to remove the seat
from the manifold. A reverse pliers or a
standard
seat inserted under the edge of the seat, will pry
the
back–up ring.
new valve assembly by tab at top with pliers,
valve assembly is square in valve chamber
vise grip and
valve seat out easily
retainer
, spring, valve, valve seat,
a 1/4” x 3” bolt to fit I.D. of
.
o–ring,
Reassembly:
1. Carefully
or
cracks, replace if worn and slip onto plunger rod.
Note:Ceramic plunger can only be installed one
2. Examine plunger retainer and stud and replace if
worn.
Note:Thread
3. Examine
retainer and replace if worn or cut. Lubricate o–ring
for ease of installation and to avoid damaging
o–rings.
Note:First install gasket, then back–up ring and
4. Thread plunger retainer and stud assembly into
plunger
5. Saturate
.
retainer
examine each ceramic plunger for scoring
(front
direction
stud into plunger retainer
o–ring, back–up ring and gasket on plunger
o–ring.
rod. Exercise caution not to over torque.
new oil
and slip retainer over ceramic plunger
to back). Do not force onto rod.
wick by soaking in oil, place in seal
.
.
6. Apply
Note:Corrosion Resistant models require the coil
Loctite 242 to
port
and torque per chart.
installed in the V
spring
valve plug, thread into manifold
alve Plug.
Servicing the Pumping Section
Disassembly:
1. Remove
manifold
2. Rotate crankshaft by hand to start separation of
manifold from crankcase. Support the underside of
the manifold and tap lightly with a mallet to remove
the
the four (4) hex nuts or two (2) bolts from the
(varies with model).
manifold assembly
.
CAUTION
Keep manifold properly aligned with ceramic
plungers when removing to avoid damage to
plungers or seals.
either
3. Remove
4. Using a wrench, loosen the plunger retainer. Grasp
ceramic plunger and push toward crankcase until
plunger
5. Remove plunger retainer with copper gasket,
back–up
6.
Remove plunger from plunger rod.
28 308–530
oil pan and slide out seal retainer with
retainer pops out.
Ring and o–ring.
wicks.
6.
Replace oil pan.
7. Turn shaft by hand to line up plungers so end
plungers
8. Carefully slip manifold onto plungers, keeping
manifold level, and tap with mallet to bring manifold
flush with crankcase.
9. Replace washers and nuts or bolts and torque per
chart.
are parallel.
Servicing the Seals and V–Packings
Disassembly:
1. Remove
2. With
the seal case from the manifold using a special key
wrench.
3. Remove
4. Remove snap ring and low pressure seal from the
seal case. Seals are generally removed easily
without
5. High Pressure Seal Models: The high pressure
seal is generally easily removed from the manifold
without
may be used.
6. V–Packing Models: The female adapter, two
v–packings and male adapter are easily removed
from manifold without tools. If extremely worn a
reverse
the manifold as described.
crankcase side of manifold facing up, unscrew
o–ring from seal case.
any tools.
any tools. If extremely worn a reverse pliers
pliers may be used.
Page 29
Reassembly:
V–Packing Models:
1.
Lubricate high pressure packing area in manifold.
2. Insert male adapter with notches down and “v” side
up.
Servicing Crankcase Section
1. While manifold, plungers and seal retainers are
removed,
examine crankcase seals for wear
.
3. Lubricate
grooved
4. Next
5. Examine seal case o–ring and replace if worn.
Lubricate
6. Thread
wrench.
High Pressure Seal Models:
1.
Lubricate seal area in manifold.
2. Carefully square seal into position by hand with the
metal
3. Examine seal case o–ring and replace if worn.
Lubricate
4. Next secure high pressure seal into position by
threading
with
Low Pressure Seal–All Models:
1. Examine seal for wear or broken spring and lace if
necessary.
2. Install low pressure seal in seal case with garter
spring
v–packings and install one–at–a–time with
side down.
install female adapter with grooved side down.
new o–ring before installing.
seal case into manifold and tighten with key
grooved side up.
new o–ring before installing.
seal case into manifold. T
key wrench.
down.
ighten seal case
2.
Check oil level and for evidence of water in oil.
3. Rotate
4. Examine crankshaft oil seal externally for drying,
5. Consult factory or your local distributor if crankcase
Pump Part
Plunger
Retainer
Manifold
crankshaft by hand to feel for smooth
movement.
cracking
service is evidenced.
or leaking.
T
orque Chart
ThreadT
M51
M8 x 1.25
M10 x 1.25
ool Size
1 mm hex
13 mm hex
17 mm hex
bearing
Torque
80 in. lbs.
125 in. lbs.
217 in. lbs.
3. Reinstall
Replace
4. Replace
per
chart.
snap ring. Be
if it can be easily turned.
manifold on pump as described and
certain snap ring is a tight fit.
torque
Valve
Covers
M10
—
17 mm hex
24 mm
27 mm
217 in. lbs.
75 ft. lbs.
75 ft. lbs.
29308–530
Page 30
ACCESSORIES
(Must be purchased separately)
DOWNSTREAM CHEMICAL INJECT
OR KIT
800–117 & 800–649
For
injecting harsh cleaning chemicals downstream from
the
pump. 800–649 is stainless steel construction.
UPSTREAM CHEMICAL INJECTOR KIT
800–257
For injecting mild cleaning chemicals upstream into the
pump.
BACKFLOW PREVENT
Prevent back–up of contaminated water into fresh
supply.
Install upstream of pump.
OR 801–133
ANTI–FREEZE FLUSH KIT 802–327
For
flushing system with 50% anti–freeze solution prior to
transporting
temperatures.
INLET
Regulates inlet water pressure to 60 psi (4 bar)
maximum.
or storing
pressure washer in below freezing
PRESSURE REGULA
TOR 800–258
WATER SANDBLASTING KIT 800–120
For abrasive cleaning of stubborn dirt and paint.
Requires a spray tip which is not included in kit (2040
Graco
workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. As
purchaser’s
sale, repair or replace any part of the equipment proven defective. This warranty applies only when the
equipment
This
warranty does not cover
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence,
accident,
damage
materials
of
structures, accessories, equipment or materials not supplied by Graco.
This
warranty is conditioned upon the prepaid return of the equipment claimed to be defective for
by
Graco to verify the claimed defect. If the claimed defect is verified, Graco
any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If
inspection
reasonable
DISCLAIMERS AND LIMIT
THE TERMS OF THIS W ARRANTY CONSTITUTE THE PURCHASER’S SOLE AND EXCLUSIVE
REMEDY AND ARE IN LIEU OF ANY OTHER W ARRANTIES (EXPRESS OR IMPLIED), INCLUDING
WARRANTY
AND OF ANY NON–CONTRACTUAL LIABILITIES, INCLUDING PRODUCT LIABILITIES, BASED ON
NEGLIGENCE OR STRICT LIABILITY . EVER Y FORM OF LIABILITY FOR DIRECT , SPECIAL OR
CONSEQUENTIAL
GRACO’S
OF WARRANTY MUST BE BROUGHT WITHIN THREE (3) YEARS OF THE DA
EQUIPMENT NOT COVERED BY GRACO W
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO
ACCESSORIES,
GRACO.
subject
in
making any claim for breach of these warranties.
AND DISCLAIMERS
warrants all equipment manufactured by it and bearing its name to
sole remedy for breach of this warranty
is installed, operated and maintained in accordance with Graco’
, and Graco shall not be liable for
tampering, or substitution of non–Graco component parts. Nor shall Graco be liable for malfunction,
or wear caused by the incompatibility with Graco equipment of structures, accessories, equipment or
not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance
of the equipment does not disclose any defect in material or workmanship, repairs will be made at a
charge, which charges may include the costs of parts, labor and transportation.
ATIONS
OF MERCHANTABILITY OR W
LIABILITY EXCEED THE AMOUNT OF THE PURCHASE PRICE. ANY ACTION FOR BREACH
These items sold, but not manufactured by Graco (such as electric motor
to the warranty
DAMAGES OR LOSS IS EXPRESSL
EQUIPMENT
, if any
, MA
TERIALS OR COMPONENTS SOLD BUT NOT MANUF
, of their manufacturer
, Graco will, for a period of twenty four months from date of
, any malfunction, damage or wear caused by
ARRANTY OF FITNESS FOR A PAR
Y EXCLUDED AND DENIED. IN NO CASE SHALL
ARRANTY
. Graco will provide purchaser with reasonable assistance
be free from defects in material and
s written recommendations.
examination
will repair or replace free of charge
TICULAR PURPOSE,
TE OF SALE.
ACTURED BY
, switches, hose, etc.) are
32 308–530
IMPORTANT PHONE NUMBERS
TO PLACE AN ORDER ,
distributor
closest to you:
FOR TECHNICAL ASSIST ANCE,
application
Subsidiary and Affiliate Companies:
of Graco equipment:
Factory
Branches:
contact your Graco distributor , or call this number to identify the
1–800–328–021
Atlanta, Chicago, Dallas, Detroit, Los Angeles, W
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
1 T
oll Free
service repair information or assistance regarding the
1–800–543–0339 T
Canada; England; Switzerland; France; Germany; Hong Kong; Japan; Korea
PRINTED
IN U.S.A. 308–530 1/91
oll Free
est Caldwell (N.J.)
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