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INSTRUCTIONS-PARTS LIST
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
5.5 HORSEPOWER, GASOLINE–POWERED
GM5000HD Airless Paint Sprayer
3000 psi (207 bar, 21 MPa) Maximum Working Pressure
Upright Cart Sprayer
Model 231–831, Series B
Basic sprayer without hose or gun.
CAUTION
Use a minimum hose length of 100 ft (30.4 m)
1/4 in. ID or 50 ft (15.2 m) 3/8 in. ID. Undersized
hose may result in poor equipment performance and
damage to the clutch or pressure control.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1997, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
308–775
Supersedes C
First choice when
quality counts.
7172A
Rev. D
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Summary of Contents for Graco GM5000HD
- Page 1 1/4 in. ID or 50 ft (15.2 m) 3/8 in. ID. Undersized hose may result in poor equipment performance and damage to the clutch or pressure control. 7172A GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1997, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001...
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Page 2: Table Of Contents
Do not use hoses to pull equipment. Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 82 C (180 F) or below –40 C (–40 F). Do not lift pressurized equipment. -
Page 3: Warnings
WARNING INJECTION HAZARD Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury. Fluid injected into the skin may look like just a cut, but it is a serious injury. - Page 4 WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re- sult in a fire or explosion and serious injury. If there is any static sparking or you feel an electric shock while using this equipment, stop spray- ing immediately.
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Page 5: Component Identification And Function
Component Identification and Function 7174A Fig. 1 Pressure Control Switch ON/OFF, enables/disables clutch function Pressure Adjusting Knob Controls fluid outlet pressure Air Cleaner* Filters air entering the carburetor Fuel Tank* Holds 0.95 gallons (3.6 liter) of 86 octane gasoline Muffler* Reduces noise of internal combustion Spark Plug Cable* Routes electrical current to spark plug... -
Page 6: Setup
WARNING 3. Fill packing nut/wetcup. Fill the packing nut/wet- cup (Y) 1/3 full with Graco Throat Seal Liquid If you are supplying your own hoses and spray (TSL), supplied. See Fig. 2. gun, be sure the hoses are electrically conductive, that the gun has a tip guard, and that each part is 4. - Page 7 Setup 5. Be sure your system is properly grounded c. Strain the paint through a fine nylon mesh bag before operating it. Read and follow the warning (available at most paint dealers) to remove the section, FIRE OR EXPLOSION HAZARD, on page particles that could clog the filter or spray tip.
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Page 8: Fueling
Fueling 2. Gasolines containing alcohol (gasohol). Do not WARNING use gasohol which contains methanol, if the gaso- hol does not contain cosolvents and corrosion Gasoline is extremely flammable and explosive inhibitors for methanol. Even if it does contain such under certain conditions. additives, do not use the gasohol if it contains Always turn the engine switch (K) to off before more than 5% methanol. - Page 9 Startup WARNING WARNING A rope which recoils too quickly may hit someone To reduce the risk of serious injury from fluid injec- and cause serious injury. The rope could also jam tion, NEVER operate the spray gun with the tip in recoil assembly.
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Page 10: Maintenance
Maintenance WARNING CAUTION INJECTION HAZARD For detailed engine maintenance and specifications, To reduce the risk of serious injury, refer to the separate engine manual, supplied. whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 10. DAILY: Check the engine oil level and fill as neces- WARNING sary. -
Page 11: Flushing
Flushing When to Flush How to Flush 1. New Sprayer. This sprayer was factory tested in lightweight oil,which was left in to protect the pump WARNING parts. Before using water–base paint, flush with mineral INJECTION HAZARD spirits, followed by a soapy water flush, and then a To reduce the risk of serious injury, clean water flush. - Page 12 Flushing 6. Follow Startup on page 8. Keep the gun trig- 10. Unscrew the filter bowl and reinstall the clean gered until clean solvent comes from the nozzle. screen. Reinstall the bowl, hand tight only. Release the trigger and lock the gun trigger safety. 11.
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Page 13: Troubleshooting
Have the pressure control checked by an au- thorized Graco dealer. The clutch is worn, damaged, or incorrectly Replace the clutch. See page 19. positioned. - Page 14 Troubleshooting PROBLEM CAUSE SOLUTION The inlet screen (31) is clogged. Clean the screen. The pump output is low on the upstroke the upstroke. The piston ball (25) is not seating. Service the piston ball. See manual 307–806. The piston packings are worn or damaged. Replace the packings.
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Page 15: Bearing Housing & Connecting Rod
Bearing Housing & Connecting Rod 11. Assemble the connecting rod (22) and bearing WARNING housing (21). INJECTION HAZARD 12. Clean the mating surfaces of the bearing housing To reduce the risk of serious injury, (21) and drive housing (20). whenever you are instructed to relieve pressure, follow the Pressure Relief 13. -
Page 16: Drive Housing
Drive Housing WARNING CAUTION INJECTION HAZARD DO NOT drop the gear cluster (18) when removing To reduce the risk of serious injury, the drive housing (20). The gear cluster is easily whenever you are instructed to relieve damaged. The gear may stay locked in the drive pressure, follow the Pressure Relief housing or pinion housing. -
Page 17: Pinion, Clutch, Clamp, Field, & Engine
Pinion, Clutch, Clamp, Field, & Engine Disassembling these parts can start from the pinion If starting from the pinion housing , first follow Steps housing, or from the clutch if no pinion service is 3 to 5 of DRIVE HOUSING, on page 16, and then needed. -
Page 18: Pinion Housing
Pinion Housing Lubricate inner and outer diameters Back of pinion housing (19a) *Included in Repair Kit 241–300 Lubricate teeth **Included in Repair Kit 239–911 Push pinion assembly in here CUTAWAY VIEW OF 19b* PINION HOUSING (19a) 19a* 19m** 19j** 19h** 19n* 19g** 19f*... -
Page 19: Clutch
Clutch 4. Tap lightly on the back of the bearing housing (21) WARNING with a plastic mallet to loosen the assembly (D) from the clutch housing. Pull the assembly away. INJECTION HAZARD To reduce the risk of serious injury, 5. The armature (4a) was removed with the pinion whenever you are instructed to relieve housing. -
Page 20: Field & Wiring Harness
Field & Wiring Harness NOTE: Refer to Fig. 11. 1. Loosen the four setscrews (12) holding the field (6) to the clutch housing (2). 2. Pull off the field. 3. Pull the plastic caps (B) off the wire screws (17) in both places on the field. -
Page 21: Clutch Housing
Clutch Housing NOTE: Refer to Fig. 13. 1. Remove the four capscrews (8) and lockwashers (9) which hold the clutch housing (2) to the engine. 2. Remove the capscrew (15) from beneath the mounting plate (D). 3. Remove the engine key (13). 4. -
Page 22: Engine
Engine 1. Remove the Pinion Housing, Clutch, Field and Wiring Harness, Clamp and Clutch Housing, as instructed on pages 17 and 19 through 21. 2. See Fig. 14 and15. Disconnect the red wire (D) from the engine lead (B). Disconnect the black and white wires from the field. -
Page 23: Reassembly
Reassembly 1. Install the clutch housing (2), capscrews (8) and The face of the housing lockwashers (9) on the engine. See Fig. 16. 1.99 .01 in. (50.55 .25 mm) Torque the screws (8) to 200 10 in-lb (23 1.1 N m) Torque to 125 .10 in-lb (14 1.1 N m) 2. - Page 24 Reassembly 6. Be sure the face of the rotor (4b) and the field are free of all oil and contaminants. Remove any burrs 7. Be sure the face of the armature (4a) is clean. on the outside edge of the rotor. Install the rotor, Assemble the armature to the shaft in the pinion lockwashers (11) and capscrews (16).
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Page 25: Pressure Control Replacement
Pressure Control Replacement To the pump. WARNING To the filter. INJECTION HAZARD To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 10. 1. Relieve pressure. 2. Disconnect hose at the pressure control while holding the fitting (A) firmly. -
Page 26: Displacement Pump
Displacement Pump Repairing the pump. WARNING See manual 307–806 for displacement pump repair. INJECTION HAZARD To reduce the risk of serious injury, Installing the pump. (See Fig. 22.) whenever you are instructed to relieve pressure, follow the Pressure Relief 1. Screw the pump about 3/4 of the way into the Procedure on page 10. - Page 27 Parts Drawing – Upright Cart Sprayer Model 231–831 DETAIL Ref 36 Label See the detail. See page 29 for the parts. See manual 307–806 for the parts. See page 30 for the parts. Ref 19 Ref 35 73, 94 16 11 Ref 55 41 44 07173A...
- Page 28 Parts List – Upright Cart Sprayer Model 231–831 Part No. Description Part No. Description 108–802 ENGINE 179–811 WHEEL, semi–pneumatic 188–424 CLUTCH HOUSING 101–242 RING, retaining 188–426 CLAMP, mounting, rotor 104–811 HUBCAP 236–568 CLUTCH ASSEMBLY 154–636 WASHER, 5/8 in. includes items 4a and 4b 112–827 BUTTON, snap .ARMATURE...
- Page 29 Parts List & Drawing – Pinion Assembly Ref No. 19 Pinion Housing Assembly 241–302 Includes items 19a to 19n Part No. Description Part No. Description 19a* 194–323 .PINION HOUSING 19j** 183–396 .HUB, armature 19b* 105–489 .PIN 108–799 .RETAINING RING, large 19c* 108–692 .BEARING...
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Page 30: Pressure Control
Parts List – Pressure Control Basic Pressure Control for the GM5000HD Sprayer Part No. Description Part No. Description 112–373 KNOB 239–056 ENGINE CONTROL BOARD 185–565 LABEL 107–251 SCREW, panhead, 10–24 x 1 in. 237–674 CONDUCTOR 112–610 SCREW, panhead, 10–24 x 2 in. -
Page 31: Dimensions
..stainless steel, carbon steel, polyurethane, UHMW polyethylene, Delrin , leather TO PLACE AN ORDER , contact your Graco distrib- Filter ... . aluminum, carbon steel, stainless steel utor, or call this number to identify the distributor closest to you: 1–800–367–4023 Toll Free... -
Page 32: Graco Warranty
Graco distributor 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.