Graco 311283E Gh833 Sprayer Users Manual Sprayer, Repair Manual, English

2015-04-02

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Repair

GH™ 833 Sprayers

311283E
ENG

For use with Architectural Coatings, Paints, Roof Coatings and Below Grade Coatings. For
professional use only.

Model: 249318, 249617, 253471, 253472
4000 psi (27.6 MPa, 275.8 bar) Maximum Working Pressure
IMPORTANT SAFETY INSTRUCTIONS
Read all warnings and instructions in this
manual. Save these instructions.

Korean patent: 10-0647761

Related Manuals

311279

311484
311485
311254

ti7107b

Warning

Warning
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard symbols and
warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and
can ignite or explode if spilled on hot surface.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are
present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
SKIN INJECTION HAZARD
High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a
cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
RECOIL HAZARD
Brace yourself; gun may recoil when triggered and cause you to fall, which could cause serious injury.

2

311283E

Warning

WARNING
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about
your material, request MSDS forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine Manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
MOVING PARTS HAZARD
Moving parts can pinch or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical reaction and equipment rupture, and result in death, serious injury, and property damage.
SUCTION HAZARD
Never place hands near the pump fluid inlet when pump is operating or pressurized. Powerful suction could
cause serious injury.
CARBON MONOXIDE HAZARD
Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon
monoxide can cause death. Do not operate in an enclosed area.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
BURN HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns,
do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating area
of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes,
burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
• Gloves
• Hearing protection

311283E

3

Component Identification

Component Identification
,

2

1

8

11
3
4
9

ti7107b

6

10
ti7133b

5

Ref

4

ti7133

7

Description

1

Hydraulic pump valve

2

Pressure control

3

Lock ring

4

Drain valve

5

Engine ON/OFF switch

6

Engine controls

7

Trigger lock

8

Serial number ID label

9

Lift locations

10

Suction holder

11

Hydraulic oil fill
311283E

Operation

Operation
Pressure Relief Procedure

General Repair Information

System pressure must be manually relieved to prevent
it from starting or spraying accidentally. Fluid under high
pressure can be injected into the skin and cause serious injury. To reduce risk of injury from injection, follow
this procedure whenever you are instructed to relieve
pressure, stop spraying, service equipment or install or
clean spray tip. Read warnings, page 4.

•

Hydraulic system and engine may become very hot
during operation and could burn skin if touched.
Flammable materials spilled on hot, bare motor
could cause fire or explosion. Have belt guard in
place during operation to reduce risk of pinching or
loss of fingers.

•

Install belt guard before operation of sprayer and
replace if damaged. Belt guard reduces risk of
pinching and loss of fingers.

1. Set pump valve OFF. Turn engine OFF.

To reduce risk of serious injury,:
TIA

•
2. Turn pressure to lowest setting. Trigger gun into pail
to relieve pressure.

•
•

•

Keep all screws, nuts, washers, etc. removed during
repair procedures. These parts usually are not provided with replacement kits.
Test repairs after problems are corrected.
If sprayer does not operate properly, review repair
procedure to verify you did it correctly. See Troubleshooting, page 7.
Do not touch moving parts with fingers or tools while
testing repair.

Grounding
3. Open prime valve (vertical).

Ground sprayer with grounding clamp to earth ground
for safe sprayer operation.

If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved after
following the steps above, VERY SLOWLY, loosen tip
guard retaining nut or hose end coupling to relieve pressure gradually, then loosen completely. Then clean tip
and hose.

311283E

5

Maintenance

Maintenance
Spark Plug:
• Use BPR6ES (NGK) or W20EPR-U (NIPPONDENSO) plug, only.
For detailed engine maintenance and specifications, refer to separate Honda Engines Owner’s Manual, supplied.

Frequency

•

Gap plug to 0.028 to 0.031 in. (0.7 to 0.8 mm).

•

Use spark plug wrench when installing and removing plug.

Procedure

Daily

Check engine oil level and fill as necessary.

Daily

Check hydraulic oil level and fill as necessary.

Daily

Check hose for wear and damage.

Daily

Check gun safety for proper operation.

Daily

Check pressure drain valve for proper operation.

Daily

Check and fill gas tank.

Daily

Check that displacement pump is tight.

Daily

Check level of TSL in displacement pump packing nut. Fill nut, if necessary. Keep TSL in nut to help prevent fluid build up on piston rod and
premature wear of packings and pump corrosion.

After first 20 hours
of operation

Drain engine oil and refill with clean oil. Reference Honda Engines
Owner’s Manual for correct oil viscosity.

Weekly

Remove engine air filter cover and clean element. Replace element, if
necessary. If operating in an unusually dusty environment; check filter
daily and replace, if necessary.
Replacement elements can be purchased from your local Honda dealer.

Weekly/Daily

Remove and debris or media from hydraulic rod.

After each 100
Change engine oil. Reference Honda Engines Owner’s Manual for corhours of operation rect oil viscosity.

6

Semi-annually

Check belt wear; replace if necessary.

Yearly or 2000
hours

Replace hydraulic oil and filter element with Graco ISO 46 Hydraulic Oil
169236; 5 gallon/20 liter or 207428; 1 gallon/3.8 liter) and filter element
287871.

311283E

Troubleshooting

Troubleshooting
PROBLEM

CAUSE

SOLUTION

Gas engine pulls hard (won't start)

Hydraulic pressure is too high

Turn hydraulic pressure knob counterclockwise to lowest setting

Gas engine does not start

Switch OFF, low oil, no gasoline

Consult engine manual, supplied

Gas engine doesn't work properly

Faulty engine

Consult engine manual, supplied

Gas engine operates, but displacement pump doesn't operate

Pump valve is OFF

Set pump valve ON

Pressure setting too low

Increase pressure

Displacement pump outlet filter (if
used) is dirty or clogged

Clean the filter

Tip or tip filter (if used) is clogged

Remove tip and/or filter and clean

Hydraulic fluid too low

Shut off sprayer. Add fluid*.

Belt worn, broken or off

Replace belt.

Hydraulic pump worn or damaged

Bring sprayer to Graco distributor for
repair

Dried paint seized paint pump rod

Service pump. See manual 311485

Hydraulic motor not shifting

Set pump valve OFF. Turn pressure
down. Turn engine OFF. Pry rod up or
down until hydraulic motor shifts.

Displacement pump operates, but
output is low on upstroke

Displacement pump operates but
output is low on downstroke and/or
on both strokes

Piston ball check not seating properly Service piston ball check. See manual 311485
Piston packings worn or damaged

Replace packings. See manual
311485

Piston packings worn or damaged

Tighten packing nut or replace packings. See manual 311485

Intake valve ball check not seating
properly

Service intake valve ball check. See
manual 311485

Suction tube air leak
Paint leaks and runs over side of wet- Loose wet-cup
cup

Tighten wet-cup enough to stop leakage

Throat packings worn or damaged

Replace packings. See manual
311485

Excessive leakage around hydraulic
motor piston rod wiper

Piston rod seal worn or damaged

Replace these parts.

Fluid delivery is low

Pressure setting too low

Increase pressure

Displacement pump outlet filter (if
used) is dirty or clogged

Clean filter

Intake line to pump inlet is not tight

Tighten

Hydraulic motor is worn or damaged

Bring sprayer to Graco distributor for
repair

Large pressure drop in fluid hose

Use larger diameter or shorter hose

311283E

7

Troubleshooting

PROBLEM
The sprayer overheats

Spitting from gun

Excessive hydraulic pump noise

CAUSE

SOLUTION

Paint buildup on hydraulic components

Clean

Oil level is low

Fill with oil.

Air in fluid pump or hose

Check for loose connections on
siphon assembly, tighten, then reprime pump.

Loose intake suction

Tighten.

Fluid supply is low or empty

Refill supply container.

Low hydraulic fluid level

Turn sprayer OFF. Add fluid*.

*Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 6.

8

311283E

Compensator Seal Replacement

Compensator Seal Replacement
Removal

4. Install new gaskets and torque screws.
Torque 50 in-lbs
4 plcs
Compensator
Assembly

O-Ring
Lubricate before installation

1. Relieve pressure, page 5. Allow hydraulic system to
cool before beginning the service procedure.

Gasket
Note Gasket Orientation

Adapter
Block

3

2. Remove screw(197) and pump handle cover (196).
Remove four cover bolts (79) and cover (140).
NOTE: It is not necessary to remove the hydraulic
lines before removing the cover. The cover is
designed to provide ample room for the cover to fit
over the hose.
197

196

79

1

O-Ring

2

4
Gasket

Torque 50 in-lbs
4 plcs

140

Torque sequence: 1-2-3-4-1
All cap screws must be tightened
When compensator assembled to
Gasket Adaptor Block. Do not ti17601a
pre-tighten cap screws.

5. Install cover (140) with four screws (79). Torque to
25-30 in-lb (2.8 - 3.4 Nzm). Install pump handle
cover (196) with screw (197).
197

196

79

ti7805b

3. Remove compensator screws and seperate compensator and adapter block.

140

ti7111b

311283E

9

Displacement Pump Replacement

Displacement Pump Replacement
See manual 311485 for pump repair instructions.

5. Remove clip (121).

Removal
1. Flush pump (36). Stop pump on down stroke if
possible.
121

2. Relieve pressure, page 5.
3. Remove suction set (147) from pump (36).
ti7789

6. Slide cover up (124).

36

124
147
ti7816

7. Separate coupling (125) and remove.

4. Remove filter housing (110), page 16.

125

110

ti7119

10

ti7814

311283E

Displacement Pump Replacement

8. Loosen jam nut (122) with a hammer. Unscrew
pump (36) from power head.

3. Hand tighten jam nut (122). Then tighten securely
1/8 to 1/4 turn with hammer or torque to 330 ft-lb
(447.4 N•m).

122
122

36

ti7782

9. Remove pump (36).

ti7817

4. Slide cover (124) up over pump rod. With engine in
OFF position, pull recoil starter to move rod until it
contacts pump rod.
5. Install coupling (125) around pump rod.
125

36
ti7804

Installation

ti7771

1. Screw jam nut (122) to bottom of pump threads (36).
2. Slide cover (124) up over pump rod. Screw pump
completely up into power head.

6. Slide cover (124) over coupling (125).

122

124
ti7815

36

125

ti7779

311283E

11

Displacement Pump Replacement

7. Install clip pin (121) to secure.

8. Install filter housing (110), page 16.

110

121
125

ti7809

ti7772

9. Connect suction hose (147) to pump outlet (36).

36

147

12

311283E

Pump Power Head Replacement

Pump Power Head Replacement
Removal

4. Remove power head from unit.

1. Relieve pressure, page 5.
2. Remove hydraulic lines (100, 101) from head (75).

100

101

75

ti7847

Installation
1. Install power head on unit.

ti7803

3. Loosen (4) mounting bolts (7) on the adapter
enough to lift and remove assembly.

ti7851

7

ti7841

311283E

13

Pump Power Head Replacement

2. Tighten power head bolts (7). Torque bolts to 400 +
10 in-lb (45 + 1 N•m).

3. Attach hoses (100, 101) to head (75). Torque to 450
+ 10 in-lb (50.84 N•m).

101
100
75

ti7853
ti7777

4. To purge air from hydraulic lines, increase pressure
enough to start hydraulic motor stroking and allow
fluid to circulate for 15 seconds.Turn pressure
down. Turn prime valve horizontal (closed).

14

311283E

Hydraulic Motor

Hydraulic Motor
2
1 450 in-lb (51 N.m)
2

600 in-lb (68 N.m)

3

60 in-lb (7 N.m)

4

930 in-lb (105 N.m)
Torqued in 3 steps

4

3

1

ti7868

311283E

15

Filter Housing Replacement

Filter Housing Replacement
Installation
1. Install filter housing (110) in pump opening.

Removal
1. Relieve pressure, page 5.
2. Remove paint and drain lines from filter housing.

110

ti7772

ti7845

2. Tighten fitting.
3. Attach paint and drain lines.

3. Loosen filter housing fitting (110) until housing and
remove housing from pump.

ti7850
ti7119

Torque to 225 + 10 in-lb. (25.4+ 1.1 N.m)
110

16

311283E

Hydraulic Pump Replacement

Hydraulic Pump Replacement
Changing Hydraulic Oil
Draining Oil
a. Place drain pan under oil tank and drain plug.
b.

Unscrew reservoir (64) drain plug and drain oil
from reservoir.

3. Remove screw (197) and pump handle cover (196).
Remove four cover bolts (79) and cover (140). (It is
not necessary to remove the hydraulic lines before
removing cover. The cover is designed to provide
ample room for the cover to fit over the hose.)
196
197

79
140

ti7805b

drain
plug

4. Unscrew suction line connections to hydraulic
pump. Place a container under hoses to catch any
dripping oil.

ti7784

Refilling Oil
a. Replace drain plug.
b.

Fill tank with Graco Hydraulic Oil, ISO 46. Tank
holds approximately 4 gallons.

Removal

ti7790

1. Relieve pressure, page 5. Allow hydraulic system
to cool before beginning the service procedure.

2. Drain oil, Changing Hydraulic Oil procedure,
page 17.

311283E

ti7801

17

Hydraulic Pump Replacement

5. Remove (4) belt cover screws (79), washers (78)
and grommets (80) (2 each side).

7. Remove belt (19), page 21.
8. Loosen set-screws (87) on front of large pulley (4).

80
78

4

79
87
67

ti7796

6. Remove belt cover (67).

67

ti7783

9. Remove pulley (4) from hydraulic pump shaft.

4

ti7807
ti7795

10. Remove nuts (10) and screws (9) holding pump to
frame.

9

10

ti7788

18

311283E

Hydraulic Pump Replacement

2. Install new pump (3) in frame.

11. Remove hydraulic pump (3).

3. Install screws (9) and nuts (10). Torque to 225 + 10
in-lb (25.42 N.m).

3

3
9
ti7800

12. Remove fittings (30, 34, 35) from pump (3) and set
aside to use on the new pump.
10
34

(

ti7778

3

4. Replace large pulley (4) on hydraulic pump shaft.
35

4

ti7816

30

Installation
1. Install fittings (30, 34, 35) from old pump on new
pump. Torque fitting 30 and 35 to 600 + 10 in-lb
(67.8 N.m). Torque fitting 34 to 450 in-lb (50.8 N.m).
34

ti7813

5. Align pulley (4) on shaft. When properly positioned
approximately 1/8 inch of shaft (139) will protrude.
3

1/8 inch
35

30

ti7816

NOTE: Fill pump casing with hyraulic oil before installing
fitting (34).

4

139
ti7835

311283E

19

Hydraulic Pump Replacement

6. Replace set-screws (87). Tighten and torque to 60 +
2 in-lb (6.8 + 0.2 N•m).
NOTE: Tighten set-screw on shaft before tightening
set-screw on pump shaft.
7. Position belt (19) over pulleys (4, 6); Installing Belt,
page 21.

9. Install suction lines. Tighten fittings. Torque fitting A
to 225 + 10 in-lb (25.4 + 1.1 N.m). Fitting B to 450
+10 in-lb (50.1 + 1.1. N.m). Fitting C to 225 in-lb
(25.4 N.m).
A
B

8. Replace belt cover (67) and grommets (80), washers (78) and screws (79), (2 each side). Torque
screws to 25-30 in-lb (2.8 -3.4 N•m).
ti7767

C
67
ti7889

10. Install cover (140) and with four screws (79). Torque
to 25-30 in-lb (2.8 - 3.4 N•m). Install pump handle
cover (196) with screw (197).

80
78

ti7810

197

196

79

79
140

ti7812

ti7111b

11. Fill oil tank following Refilling Oil procedure on
page 17.

20

311283E

Hydraulic Pump Replacement

Belt Removal and Replacement
(recommended method)
Removing Belt

Installing Belt
a. Put belt over lower pulley (6) and align correctly.
b.

Line up belt over top left side of large pulley (4).

a. Place a ziptie around belt (19).

19

ziptie
ti7869
ti7843

c.
Moving parts can pinch or amputate fingers and other
body parts. To avoid serious injury be sure engine is in
OFF position before pulling engine recoil.
b.

Slowly pull ziptie toward you while at the same
time slowly pulling engine recoil to rotate pulleys. It may be necessary to reposition zip tie
and repeat this procedure a few times to completely remove belt from pulley.

With the palm of your hand, hold the belt snug
to large pulley while at the same time slowly pull
engine recoil to rotate pulleys.

d. Check belt (19) alignment on both large (4) and
small pulley (6). When properly positioned over
pulleys, belt is centered on pulleys and completely over all grooves.

ti7834

Properly Aligned
ti7842

311283E

ti7837

Not Aligned Properly

NOTE: If belt is not aligned properly, to adjust belt, slowly
pull engine recoil while at the same time pushing or pulling belt to reposition over pulley.

21

Hydraulic Pump Replacement

Alternate Belt Removal and Installation

b.

Tighten engine bolts (21). Torque to 225 + 10
in-lb (25.4 + 1.1 N.m).

c.

Check belt (19) alignment on both large (4) and
small pulley (6). When properly positioned over
pulleys, belt should be centered on pulleys and
completely over all grooves.

Removing Belt
a. Loosen engine bolts (21) to relieve tension on
belt.
b.

Slide belt off pulleys.

Installing Belt
a. Install belt (19) over small (6) and large (4)
pulleys.

ti7834

ti7837

Properly Aligned

Not Aligned Properly

NOTE: If belt is not aligned properly, to adjust belt, slowly
pull engine recoil while at the same time pushing or pulling belt to reposition over pulley.
4
19

21

6
ti7870

22

311283E

Hydraulic Pump Replacement

Replacing Oil Reservoir
Removal
4. Loosen and remove suction hose (153).

1. Relieve pressure, page 5.
32

2. Drain oil from reservoir (64) following Draining Oil
procedure, page 17. Keep plug for use on new reservoir.

153
ti7785

5. Remove and keep suction fitting (32) for use on new
reservoir.
6. Loosen and remove return lines (100, 101).

Drain Plug

100

ti 7784

101
3. Remove fill cap (27) and filter assembly (111). Keep
for use on new reservoir.

111

27
ti7785
ti7803

311283E

23

Hydraulic Pump Replacement

7. Remove cooler line from reservoir (64).

9. Lift reservoir (64) out of frame.

64

ti7791

8. Remove (2) top bolts (86) and 2 bottom nuts (84)
securing reservoir (64) to frame.
ti7806

Installation
1. Install plug (102), return elbow (31), suction fitting
(32), inlet screen (89) and filter assembly (111) in
new reservoir (64).
ti7846

111
27

31
ti7786

89
102

32

24

311283E

Hydraulic Pump Replacement

5. Reattach return lines (100, 101). Torque to 450 + 10
in-lb (51 + 1.1 N•m).

2. Install new reservoir (64) in frame.

64

100

101

ti7781

3. Replace bolts (86) and nuts (84). Tighten bolts.
Torque to 125 + 10 in-lb 14 + 1.1 N•m).
4. Connect coolant line to reservoir (64). Torque to 225
in-lb (14.1 N.m).

ti7777

6. Reattach suction hose (153). Toque to 600 + 10
in-lb (68 + 1.1 N•m).

153
ti7766
ti7785

311283E

25

Hydraulic Pump Replacement

7. Verify drain plug has been replaced. Fill oil reservoir
with oil to high mark on dip stick (approximately 3.5
gallons).

ti7784

Drain Plug
8. Replace cap (27).

27
ti7785

26

311283E

Changing Hydraulic Fluid Filter

Changing Hydraulic Fluid Filter
Removal

Installation
1. Install new o-ring (113) from kit.
2. Install new filter (108) over cap (155).

1. Relieve pressure, page 5.
2. Loosen and remove hose (101) from fitting (103).
3. Remove filter housing (111) from reservoir (64).
4. Remove bottom filer cap (155) from housing (111).
5. Pull filter (108) off cap (155).

3. Install cap (155) and filter (108) in filter housing
(111). Hand tighten cap till snug. Then torque to 375
+ 10 in-lb (42 + 1.1 N•m).
4. Install filter housing (111) into reservoir.
5. Install fitting (103) in filter housing (111). Torque to
600 + 10 in-lb (67.8 + 1.1 N.m).
6. Reattach hose (101) to fitting (103). Torque to 450 +
10 in-lbs (51 + 1.1 N•m).
101

103

111

108
113
155

ti7763

311283E

27

Cooler Replacement

Cooler Replacement
4. Remove screws (79), washers (78) and support bar
(77) from cooling coil (72).

72

Removal
1. Relieve pressure, page 5.

77

2. Loosen ground screw and remove ground clamp
(95) from sprayer.
79
78

ti7794

5. Remove coil (72) from sprayer frame.
95

ti7799

3. Loosen and remove return line to oil tank and
hydraulic line to cooler.

72

ti7792

ti7802

28

311283E

Cooler Replacement

Installation
1. Install new coil (72). Replace support bar (77),
washers (78) and screws (79). Tighten screws.

3. Replace ground wire (95) and tighten screw. Torque
to 25-30 in-lbs (2.8 - 3.4 N.m).

95

72
ti7774
ti776 8

2. Reconnect return line to oil tank and hydraulic line
to cooler. Torque to 225 in-lb (25.4 N.m).

4. Replace bar and screws. Torque to 25-30 in-lb
(2.8-3.4 N.m).

77

79

78
ti7776

311283E

29

Motor Replacement

Motor Replacement
Removing Pulley (6)
NOTE: This procedure is only necessary if you
are replacing the motor. When you install a new
motor you reuse the existing pulley.

Removal
1. Relieve pressure, page 5.
2. Remove screws (79) and washers (78) and belt
cover (67).

Removal
a. Loosen set screw (87) located on the side of the
pulley (6).
b.

Remove large bolt (24) in the center of pulley
(6).

c.

Pull pulley (6) off motor (5).

3. Remove belt (19), page 21.
4. Remove screws (21), washers (70) and nuts (10)
securing motor (5) to frame.
5. Remove motor (5) from frame.

Installation
a. Position new pulley (6) on motor (5).

Replacing Motor Fan

b.

Install large bolt (24) and washer (65) in center
of pulley (6). Torque to 125 + 10 in-lb (14.1 + 1.1
N.m).

c.

Tighten set screw (87). Torque to 60 + 2 in-lb
(25.4 N.m).

Removal
a. Loosen and remove bolts (86) on front of fan
(14).
b.

Pull fan (14) off small pulley (6).

Installation
a. Position new fan (14) over small pulley (6).

Installation
1. Install motor (5) in frame.

b.

Replace bolts (86) and tighten securely.Torque
to 125 + 10 in-lb (14.1 + 1.1 N.m).

2. Replace all screws (21), washers (70) and nuts (10).
Tighten securely.
3. Install belt (19) over pulleys (4, 6), page 21.
4. Replace belt cover (67) and screws (79) and washers (78) (2 each side). Using a wrench tighten bolts.
Torque to 25-30 in-lb (2.8-3.4 N.m).

30

311283E

Motor Replacement

67

4
79

78
19

87

86
14
5
80

21

6

65

24

10
ti7797

70

311283E

31

Removing Handle

Removing Handle

3. Remove frame tube plugs (120) located behind the
wheels.

Fixed Mounting (optional)
To prevent damaging the unit when transporting it in
a truck or on a trailer, Graco recommends fixed
mounting to the vehicle.

120

Repositioning Handle
Before you can secure the unit to a truck or trailer bed,
you must reposition the handle.

4. Insert plugs (120) in upper frame handle tubes (a).

(a)

1. Remove the 4 handle sleeve screws (143).
143

120

5. Insert handle assembly (25) into lower frame tubes
(b). The hose bracket should face down. Adjust to
appropriate in/out location.
2. Remove handle assembly (25) by pulling it out of
upper frame tubes (1).
(b)
25 25

25
1

(b)

6. Install sleeve screws (143) in lower frame tubes.

143

32

311283E

Removing Handle

Securing Unit to Vehicle Bed
For fixed mounting, fasten U-bolts over sprayer frame as
indicated in the following illustration.

2. Place U-bolts over sprayer frame and through holes
in vehicle bed. Place a washer and nut over bolt
end. Using a wrench, tighten nut securely.

1. Reposition handle, steps 1-5, page 32.
Reposition Handle

U-bolts

U-bolts

311283E

33

Technical Data

Technical Data
Sprayer
Hydraulic Pressure psi (bar)
Hydraulic Reservoir Capacity Gallon (liters)
Motor HP (kW)
Maximum Delivery gpm (lpm)
Maximum Tip Size
• 1 gun
• 2 guns
• 3 guns
• 4 guns
• 5 guns
• 6 guns
Fluid Inlet inches
Fluid Outlet inches

GH833 Gas
2750 (19.0)
4.0 (15.1)
Honda 13 (9.7)
4.0 (15.1)
.065
.046
.037
.032
.028
.026
1-1/2 to 11-1/2 NPT (m)
1 to 11-1/2 NPT (f)

Dimensions
Weight lb (kg)
Height inch (cm)
Width inch (cm)
Length inch (cm)

360 (163)
40 (101.6)
27 (68.6)
47 (119.3)

Sound Levels*
Sound Pressure
Sound Power

91 dB(A)
106 dB(A)

*measured at maximum normal load conditions
Graco-Approved Hydraulic Oil
169236 - 5 gallons (19 liters)
207428 - 1 gallon (3.8 liters)

34

311283E

Notes

Notes

311283E

35

Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance 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 to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information
For the latest information about Graco products, visit www.graco.com.
TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.

All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 311283

Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2006, Graco Inc. is registered to ISO 9001
www.graco.com
Revised 06/2011



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Format                          : application/pdf
Title                           : 311283E - GH833 Sprayer, Repair Manual, English
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Subject                         : GH833 Sprayer Repair Manual. Gas sprayer for architectural coatings, paints, roofing coating and below grade coating
Author                          : Michelle Oliveira
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