Graco Inc 308-548, 390sts, 231-353 manual Drive Housing, Connecting Rod, Crankshaft

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Drive Housing, Connecting Rod, Crankshaft

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief

Procedure on page 9.

NOTE: Inspect parts as they are removed. Replace parts that are worn or damaged.

1.Remove the displacement pump. See page 22.

2.Remove the pressure control (64). See page 30.

3.Turn the displacement pump rod (107) so the pin hole aligns with the bottom drive housing screw (19). See Fig. 28. Remove the three drive housing screws and lockwashers (19,6). Also see Fig. 29 on page 29.

107

19,6

Fig. 28

01074

 

4.Remove the two motor screws (19) and handle (24). See Fig. 29 on page 29.

5.Tap the lower rear of the drive housing (11) with a plastic mallet to loosen the motor. Pull the drive housing straight off the motor.

CAUTION

Do not allow the gear (16) to fall; it may stay attached to the drive housing or to the motor.

Do not lose the thrust balls (11a or 4a) or let them fall between the gears, which will damage the drive housing if not removed. The balls, which are heav- ily covered with grease, usually stay in the gear re- cesses, but could be dislodged. If the balls are not in place, the bearings will wear prematurely.

6.Remove and inspect the crankshaft (12) and the connecting rod (15).

7.Install the connecting rod.

8.Lubricate the inside of the drive housing bearing with SAE non-detergent oil. Pack the roller bearing and gears with the grease supplied.

NOTE: The gears and bearings between the drive housing (11) and motor front end bell (C) should con- tain a total of 3 fl. oz. (29 cc) of grease.

9.Route the wire harness (A) through the motor pas- sages to the junction box (59).

10.Place the large washer (12a) and then the small washer (12b) on the crankshaft (12).

11.Lift the crank to the top of the stroke and insert crankshaft (12). Align the gears and push the drive housing (11) straight onto the motor and the locat- ing pins. Install the screws (19, 5) and their lock- washers (6). Torque to 80 in–lb (9 N.m).

12.Install the displacement pump. See page 22.

13.Install the pressure control (64). See page 30. Install the front cover (13).

 

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Contents Rev. D Supercedes Rev. C Model 231-353, Series aTable of Contents SymbolsInjection Hazard Equipment Misuse Hazard Major Components Setup How to Use the Gun Trigger Safety How to use the pressure drain valveHow to use the pressure control OperationHow to use the RAC IV tip guard How to remove a tip clogStartup Procedure Pressure Relief ProcedureStartup Fire and Explosion Hazard 102 Shutdown and Care Shutdown and CareHow to Flush When to FlushFlushing Troubleshooting Basic Problem SolvingIntermediate Problem Solving If pump consistently comes to rest with Use AC power or a different generator Motor Test SetupArmature Short Circuit Test General Repair Information Tool ListMotor Brushes Test the brushes Displacement Pump Repair Removing the pump See FigDisassembling the pump See Fig Intake valve repair See FigReassembling the pump 110 108 107 116 Motor On/Off Switch Power Supply CordMotor Start Board Drive Housing, Connecting Rod, Crankshaft REF a Pressure Control Pressure Transducer Inlet Strainer Installation/Removal Drain ValveDisplacement Pump Parts Drawing and List AccessoriesModel 236-787, Series a Fluid Filter Kit Low Profile Cart KitSprayer Parts Drawing Model 231-353, Series aSprayer Parts List Motor KITTechnical Data DimensionsGraco Warranty and Disclaimers Graco Phone Numbers

390sts, 231-353, 308-548 specifications

Graco Inc. has established itself as a leader in fluid handling equipment, and the Graco 308-548, 231-353, and 390STS models exemplify this commitment to innovation, efficiency, and reliability. These models are designed for high-performance applications in various industries, including automotive, construction, and manufacturing.

The Graco 308-548 is engineered with a powerful motor and advanced pump technology, providing user-friendly operation and outstanding reliability. Its design allows for easy maintenance, minimizing downtime and increasing productivity. The adjustable pressure setting ensures optimal performance for different materials, making it a versatile choice for spray applications. Its lightweight construction and portability enhance usability, allowing operators to move the unit with ease.

On the other hand, the Graco 231-353 model is known for its advanced airless technology, which enables users to achieve a smooth and even finish without the need for thinning. This model is equipped with an efficient pump that delivers consistent material flow, ensuring high-quality results in every application. A notable feature of the 231-353 is its ability to handle a wide range of coatings, including paints, stains, and sealers, making it ideal for both interior and exterior projects.

The Graco 390STS stands out in this lineup with its robust design and powerful performance, suitable for larger scale projects. It incorporates SmartControl technology, which provides precise pressure control and consistent spray patterns, contributing to an efficient work process. The ergonomic design emphasizes operator comfort, reducing fatigue during extended use. Additionally, the 390STS supports a variety of spray tips, allowing for customization based on specific job requirements, further enhancing its versatility.

All three Graco models feature durable construction, capable of withstanding rigorous job site demands. They are built with high-quality materials that resist corrosion and wear, ensuring longevity and reducing the total cost of ownership. The ease of use and intuitive controls minimize the learning curve for new users, making these models accessible to both professionals and DIY enthusiasts alike.

In conclusion, Graco Inc. continues to push the boundaries of fluid handling technology with the 308-548, 231-353, and 390STS models. Their powerful performance, advanced features, and user-friendly designs make them standout choices for anyone in need of reliable spray equipment.
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