Service

Required Tools

•Set of large adjustable wrenches

•Set of metric sockets or wrenches

•Large pipe wrench

•Torque wrench

•Rubber mallet

•Flat end punch

4.With the bleeder type main air valve turned off (1), remove the thumb screws (14) and the two guards

(15)from the sides of the proportioner.

5.Disconnect the displacement pump (3) from the frame

(5)as follows:

6.Note the relative position of the pump’s fluid outlet (23) to the frame and also note the frame location of

displacement pump being removed. Each displacement pump must be returned to its original position and orientation.

WARNING

To reduce the risk of serious injury or amputation, carefully follow all instructions listed below. In addition, be sure that the pressure relief procedure has been completed and that the main bleeder-type air valve has been turned off and locked out before removing ANY guards or covers from the proportioner.

Disconnecting the Displacement Pump(s)

1.Flush the System. Follow the procedure on page 11.

2.Relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 11.

3. Disconnect the siphon hose and the fluid outlet hose.

CAUTION

Be sure to use two people when lifting, moving, or disconnecting the pump. This pump is too heavy for one person. Be sure to support the displacement pump while it is being disconnected, to prevent it from falling and causing injury or property damage. Do this by securely bracing the pump, or by having at least two people hold it while another disconnects it.

7.Using an adjustable wrench (or hammer and punch), unscrew the coupling nut (10,11) from the rod adapter (13). Do not lose or drop the coupling collars (12). See Fig. 6.

8.Hold the tie rod flats with a wrench to keep the rods

from turning. Unscrew the nuts (8) from the tie rods

(7). Carefully remove the displacement pump (3) from the frame.

9.Refer to the separate manual supplied for

displacement pump service. Some models use two different displacement pumps. Be sure to look at the model number and use the appropriate manual for service and reference.

16 684025

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Graco 965478, 965477, 965481, 965479, 965466 manual Service, Required Tools, Disconnecting the Displacement Pumps
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965466, 965479, 965481, 965478, 965477 specifications

The Graco 965466, 965477, 965481, 965478, and 965479 are part of Graco's robust line of paint sprayers, designed with durability, efficiency, and ease of use in mind. Each model features advanced technologies that cater to both professionals and DIY enthusiasts, ensuring a clean, even finish in a variety of painting applications.

At the heart of these models is the Graco ProConnect system, which allows for quick and easy changes of the pump. This innovative feature minimizes downtime during projects, providing users with a seamless painting experience. The pumps are designed to handle a wide range of materials, from thin coatings to thicker paints, broadening their usability across diverse surfaces and project requirements.

One of the standout technologies in these models is the SmartControl system. This technology delivers a consistent spray fan throughout the pressure range, eliminating the frustrations of uneven paint application. The adjustable pressure control allows users to tailor the flow to their specific needs, leading to better coverage and fewer material waste.

These sprayers are equipped with a powerful electric motor, which ensures reliable operation on even the toughest jobs. The robust construction of each model guarantees longevity, making them a wise investment for those who frequently tackle painting tasks. Additionally, the lightweight design of these sprayers means they can be easily transported between job sites.

Another significant feature is the Graco FinishPro guard system, which helps maintain the integrity of the spray tip and provides improved spraying performance. This system extends the life of the tip while ensuring that the paint is delivered with precision and accuracy.

Each of the Graco models offers ergonomic designs, ensuring that users work comfortably over extended periods. Features such as padded grips and adjustable handles contribute to enhanced user experience, reducing fatigue during large projects.

Finally, all models come with Graco's standard two-year warranty. This provides peace of mind to users, knowing they are backed by a reputable manufacturer committed to quality and customer satisfaction.

In summary, the Graco 965466, 965477, 965481, 965478, and 965479 paint sprayers are engineered for superior performance, featuring innovations like the ProConnect system, SmartControl technology, and durable construction that meet the demands of varying painting tasks. Whether for professional contractors or enthusiastic DIYers, these sprayers offer the reliability and efficiency needed for a flawless finish.
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