Repair

Repair the Shaft and Bearings

NOTE: Parts marked with a (♦ ) are included in Shaft repair kit 233841. For the best results, use all parts in the repair kit.

Parts marked with a (❖) are included in Bearing repair kit 15J647.

Disassembly

1.Remove the diaphragms. See page 13.

2.Disassemble the air valve. See page 16.

3.Remove the housing (54).

•Sleeve clamp (6) is visible inside the air valve cavity. Spread the sleeve clamp (6) with pliers DIN 5254A, nominal size 19, and at the same time, slide the shaft assembly (7) out from the end where housing (54) was removed.

NOTE: The valve carriage (5) will remain free inside the diaphragm housing.

4. Remove clip (42) and bearing (3).

Reassembly

1.Replace o-ring (2) in bearing, lubricate internal o-rings.

2.Install new bearing (3) and clip (42) inside housing (54).

3.Insert shaft assembly (7) into diaphragm housing (1) through the valve carriage, spreading the sleeve clamp to allow full insertion. Be careful to release sleeve clamp (6) in the correct location along the shaft to engage it in all three grooves.

4.Reinstall the housing (54).

5.Replace o-rings on the carriage, air valve plate, and plugs and reinstall the air valve section. (See page 16.)

6.Replace the diaphragms (page 13).

7.Replace the ball check seals (29) (page 20) and reinstall the fluid covers.

Fluid Inlet and Outlet Adapters

If the fluid inlet adapter (1a) or outlet adapter (1c) have been removed, apply sealant primer and high strength anaerobic sealant to the adapter threads before install- ing. Be sure to install new o-rings (1b, 1d). Torque the adapters to 12.5-14.7 ft-lb (17-20 N•m).

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311688L

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Graco 311688L important safety instructions Repair the Shaft and Bearings, Fluid Inlet and Outlet Adapters
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311688L specifications

The Graco 311688L is a high-performance airless paint sprayer, designed for both professional contractors and DIY enthusiasts looking to achieve a flawless finish on their projects. Engineered for reliability and efficiency, the Graco 311688L stands out in the competitive market of paint sprayers, offering a range of features that cater to various painting tasks.

One of the key features of the Graco 311688L is its powerful motor, which delivers consistent pressure to ensure an even and smooth application of paint. The unit is designed to handle a variety of coatings, including unthinned paints, stains, and sealers, making it versatile enough for numerous projects, from indoor walls to outdoor fences. The sprayer can cover large areas quickly, reducing the amount of time needed to complete a job.

Equipped with Graco's ProXChange technology, the Graco 311688L allows for easy replacement of the pump without the need for tools, minimizing downtime during projects. This feature is especially beneficial for professionals who need to maintain efficiency on job sites. The sprayer also includes the Graco SmartControl technology, which provides a consistent spray pattern regardless of the selected pressure. This technological advancement aids in achieving optimal results while allowing users to adjust the spray patterns according to their needs.

In terms of ergonomics, the Graco 311688L is designed with user comfort in mind. The lightweight design and integrated handle make it easily portable, while the adjustable spray tip enables users to customize the size and shape of the spray fan for precision work. Additionally, the unit features a built-in suction tube that allows for painting directly from a paint bucket, reducing mess and increasing convenience.

Safety has not been overlooked in the Graco 311688L design. It features a pressure relief valve that ensures safe operation, preventing unwanted discharge of paint when the motor is turned off. The unit also comes with a durable construction that enhances its longevity, making it a worthwhile investment for anyone serious about painting.

To sum it up, the Graco 311688L offers a blend of power, efficiency, and user-friendly features that make it an excellent choice for various painting applications. Whether you're a seasoned professional or a weekend warrior, this airless paint sprayer provides the performance and reliability needed to tackle any paint job with confidence.
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