Graco 257369 Repair Manual
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Graco 257369 Repair Manual

Graco 257369 Repair Manual

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Repair
HTX 2030
-For Portable Airless and Air-Assisted Spraying of Water-Based Architectural Coatings with Base Coat Pump-
-For Airless Spraying Architectural Coatings and Paints with Top Coat Pump-
IMPORTANT SAFETY INSTRUCTIONS
Read all warnings and instructions in this man-
ual. Save these instructions.
Model Number: 257369 (HTX2030 FreeFlo Inline Gun)
Model Number: 278675 (HTX2030 AirSpray Trigger Gun)
Model Number: 26C681 (HTX2030 STX Gun, 50 ft. Hose)
Model Number: 26C682 (HTX2030 STX Gun, 100 ft. Hose)
Model Number: 26C683 (HTX2030 Plus, STX Gun, 50 ft. Hose)
Model Number: 26C684 (HTX2030 Plus, STX Gun, 100 ft. Hose)
Model Number: 26C697 (HTX2030 w/ Air Manifold, Bare Unit)
Maximum Working Pressure:
Base Coat Pump: 1000 psi (69 bar, 6.9 MPa)
Top Coat Pump: 3300 psi (228 bar, 22.8 MPa)
Related Manuals
313891 - Operation (French)
313893 - Operation (Spanish)
313889 - Repair (English)
313892 - Repair (French)
313893 - Repair (Spanish)
313890 - Parts
313895 - HTX 2030 Flex Head and Pole Spray Applicator (English)
313896 - HTX 2030 Flex Head and Pole Spray Applicator (French)
313897 - HTX 2030 Flex Head and Pole Spray Applicator (Spanish)
310894 - Displacement Pump (Top Coat)
308491 - Airless Heavy Duty Texture Gun
313537 - HTX 2030 FreeFlo Inline Gun (English)
313603 - HTX 2030 FreeFlo Inline Gun (Chinese)
313908 - HTX 2030 FreeFlo Inline Gun (French)
313911 - HTX 2030 FreeFlo Inline Gun (Spanish)
332160 - HTX2030 AirSpray Trigger Gun (English)
332227 - HTX2030 AirSpray Trigger Gun (French)
332228 - HTX2030 AirSpray Trigger Gun (Spanish)
332229 - HTX2030 AirSpray Trigger Gun (Chinese)
3A6746 - STX Air Spray Trigger Gun
3A6839 - Air Manifold
313889E
EN
ti13632a

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Summary of Contents for Graco 257369

  • Page 1 IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this man- ual. Save these instructions. Model Number: 257369 (HTX2030 FreeFlo Inline Gun) Model Number: 278675 (HTX2030 AirSpray Trigger Gun) Model Number: 26C681 (HTX2030 STX Gun, 50 ft. Hose) Model Number: 26C682 (HTX2030 STX Gun, 100 ft. Hose) Model Number: 26C683 (HTX2030 Plus, STX Gun, 50 ft.

  • Page 2: Table Of Contents

    Installation ......18 Graco Standard Warranty ....30...

  • Page 3: Warning

    Check hoses and parts for signs of damage. Replace any damaged hoses or parts. • This system is capable of producing 3300 psi (228 bar, 22.8 bar). Use Graco replacement parts or accessories that are rated a minimum of 3300 psi (228 bar, 22.8 bar).
  • Page 4 Warning WARNING WARNING WARNING WARNING SKIN INJECTION HAZARD (APPLICATOR) High-pressure fluid from dispensing device, 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.
  • Page 5 Do not kink or over-bend the hose. • Do not expose the hose to temperatures or to pressures in excess of those specified by Graco. • Do not use the hose as a strength member to pull or lift the equipment.

  • Page 6: Component Identification - Sprayer

    Prime Switch (used with Base Coat Pump) Pump Control Knob Heavy Texture Material Hose (used with Base Coat Pump) Applicator Switch (used with Base Coat Pump--on Hose) Applicator (Base Coat) (Model 257369) Pump (Base Coat) Over Pressure Relief Valve Pump (Top Coat)

  • Page 7: Component Identification - Base Coat Applicator

    Component Identification - Base Coat Applicator Component Identification - Base Coat Applicator ti14357a Applicator Air Hose Adapter and Air Adjustment Valve Airless Filter or Air Passage Plug Filter Support Airless Spray Assembly Airless Spray Tip Nozzle Air Nozzle (4 mm, 6mm, 8mm, 10mm) Air Nozzle Cleaner Cleaning Brush Cleaning Ball...

  • Page 8: Component Identification - Htx2030 Air Spray

    Component Identification - HTX2030 Air Spray Trigger Gun Component Identification - HTX2030 Air Spray Trigger Gun ti21036a HTX2030 Air Spray Trigger Gun Nozzle, Size #1, Size #2, Size #3 Adapter, Housing Ring, Retaining Nozzles Tip, Disc, Spray, 1/8 in. (3 mm), 1/4 in. (6.3 mm), 5/16 in. (8 mm), 3/8 in. (9.5 mm) Ring, Retaining, Spray Discs Air Hose Adapter and Air Adjustment Valve Trigger, Latch On...

  • Page 9: Pressure Relief Procedure

    Pressure Relief Procedure Pressure Relief Procedure Applicator (Base Coat Pump) Spray Gun (Top Coat Pump) Follow the Pressure Relief Procedure whenever you see this symbol. 1. Lock gun trigger safety and turn engine OFF. This equipment stays pressurized until pressure is manually relieved.

  • Page 10: Troubleshooting

    At 70° F (21° C), the resistance must be between 1.2 +0.2Ω; if not, replace pinion housing. Have pressure control checked by authorized Graco dealer Clutch is worn, damaged, or incorrectly Adjust or replace clutch. Page 18.
  • Page 11 Troubleshooting Problem Cause Solution Pump output is low Strainer (82) is clogged Clean strainer. (Base Coat Pump see pages Piston ball is not seating Service piston ball. Piston packings are worn or damaged Replace packings. Top Coat Pump see manual O-ring in pump is worn or damaged Replace o-ring.

  • Page 12: Bearing Housing And Connecting Rod

    Bearing Housing and Connecting Rod Bearing Housing and Connecting Rod Installation 1. Evenly lubricate inside of bronze bearing (C) in bearing housing (40) with high-quality motor oil. Lib- Removal erally pack top roller bearing (E), lower bearing (D) inside connecting rod (43) with bearing grease. 1.

  • Page 13: Drive Housing

    Drive Housing Drive Housing 2. Ensure thrust washers (30, 31) are on combination gear (32) and washers (33a, 33b) are on crankshaft of drive housing (33). Removal 1. Perform Pressure Relief Procedure, page 9. 2. Remove Bearing Housing, page 12. NOTICE ti6252a Thrust washers may stick to grease inside of drive...

  • Page 14: Pinion Assembly / Clutch Armature / Clamp

    Pinion Assembly / Clutch Armature / Clamp Pinion Assembly / Clutch Armature / Clamp Pinion Assembly / Clutch c. Remove strain reliefs (70b). Armature Removal If pinion assembly (29) is not removed from clutch hous- ing (19), perform steps 1 through 3. Otherwise, start at step 4.

  • Page 15: Installation

    Pinion Assembly / Clutch Armature / Clamp Clutch Armature Clamp Removal 8. Use an impact wrench or wedge something between clutch armature (25) and clutch housing to hold engine shaft during removal. Gasoline can spill and cause a fire or explosion if engine is tipped on its side.
  • Page 16 Pinion Assembly / Clutch Armature / Clamp Clamp Installation 1. Install engine shaft key (18). 6. Check o-ring (29d) and replace if missing or dam- aged. 2. Tap clamp (22) onto engine shaft (A). Maintain ti13213a dimension of 2.612 ± .010 in. (66.34 ± .25mm). 7.
  • Page 17 Pinion Assembly / Clutch Armature / Clamp 9. Place pinion assembly on bench with rotor side up. 12. Connect clutch cable connectors to inside of pres- sure control. 10. Apply thread sealant to screws. Install four screws (28) and lock washers (24). Alternately torque screws to 125 ±...

  • Page 18: Clutch Housing

    Clutch Housing Clutch Housing Removal Installation 1. Remove four screws (20) and lock washers (21) 1. Push on clutch housing (19). which hold clutch housing (19) to engine. 2. Install four capscrews (20) and lock washers (21) and secure clutch housing (19) to engine. Torque to 200 in-lb (22.6 N•m).

  • Page 19: Engine

    Engine Engine Removal Installation NOTE: All service to the engine must be 1. Lift engine carefully and place on sprayer cart. performed by an authorized Honda dealer. 2. Install two screws (16) in base of engine and secure 1. Remove Pinion Assembly/Clutch Arma- with locknuts (17).

  • Page 20: Pressure Control

    Pressure Control Pressure Control Pump On/Off Switch Installation 1. Install new ON/OFF switch (70j) so tabs of switch Removal snap into place on inside of cover. Align new ON/OFF switch with electrical tabs at bottom. 1. Remove two screws (71) and swing down cover (70a).

  • Page 21: Control Board

    Control Board Control Board Removal Installation 1. Install control board (70c) with four screws (70d). 1. Remove two screws (71) and swing cover (70a) down. ti13719a 2. Connect engine wires to control board (70c). 3. Connect all leads at control board (70c). See Wiring Diagram, page 26.

  • Page 22: Pressure Control Transducer

    Pressure Control Transducer Pressure Control Transducer Removal Installation 1. Install o-ring (158b) and pressure control transducer (158) in manifold (72). Tighten securely. 158b 1. Remove two screws (71) and swing cover (70a) down. ti13800a 2. Place end of transducer in slot of mount (183) and secure with cover (184) and screws (182).

  • Page 23: Pump Control

    Pump Control Pump Control Removal Installation 1. Install shaft spacer (70n) on pump control (70p). 2. Install pump control, shaft nut, lock washer, and pump control knob (70k). 1. Remove two screws (71) and swing cover (70a) down. ti14417a ti13709a a.

  • Page 24: Displacement Pump

    Displacement Pump Displacement Pump Removal c. Place u-bolt on pump door outer edge. d. If pump door is stuck, do steps e, f, and 8. Oth- erwise, go to step 9. e. Twist latch u-bolt back from pump door outer edge.

  • Page 25: Installation

    3. Push pump pin until it is fully retained. ti7330a NOTE: Pin will snap into position. 8. Fill pump with Graco TSL until fluid flows onto top of seal. ti6378a ti13727a 4. Close pump door and rotate latch into position. Do ti5493a not tighten latch.

  • Page 26: Wiring Diagram

    Wiring Diagram Wiring Diagram ti13556a Control Board To Engine Pump Sensor To Ground Pump/Prime Switch Clutch Test Points Display Board Pinion Pump Control Drive Transducer On/Off Switch 313889E...

  • Page 27: Technical Data

    Technical Data Technical Data Honda GX 200 Engine: ANSI Power Rating @ 3600 rpm 6.5 Horsepower (4.8 kW) Maximum Working Pressure: Base Coat Pump 1000 psi (69 bar, 6.9 MPa) Top Coat Pump 3300 psi (228 bar, 22.8 MPa) Noise Level: Sound Power 105 dBa per ISO 3744 Sound Pressure...

  • Page 28: Graco Standard Warranty

    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.

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