Replacing the Hydraulic Pump

1.Follow the Pressure Relief Procedure Warning on page 10. Let the hydraulic system cool before beginning the service procedure.

2.Unscrew the reservoir drain plug (51, page 24), having a container ready to catch the draining fluid.

3.Disconnect the hose (7) from the bypass valve (9) by loosening the hose clamp (8). See Fig 8.

4.Loosen the hose clamp (8) and pull the hose (85) off the hose insert (5) near the elbow (3). See Fig 8.

5.Loosen the hose clamp (54) on the hose (53) just above the hydraulic pump (107). See Fig 8.

6.Loosen the tube fitting nut (18) of hose (22). See Fig 8.

7.Remove the two capscrews (150), lockwashers (66) and washers (64) holding the pump (107) to the support (117). See Fig 8.

8.Pull the pump straight off the pump support.

9.Loosen the setscrews (108) on the pump half of the coupler (109). See Fig 9.

10.Remove all fittings from the old pump and install them on the new pump in the same order.

11.Check Dimension A as shown in Fig 9. When the dimension is correct, tighten the setscrews (108), slide the new pump assembly onto the pump support (117) and recheck the dimension.

CAUTION

The correct coupling dimension is critical to avoid improper coupler engagement to the coupler spider which will damage the coupler and make the sprayer inoperable.

12.Reconnect the hoses. Reinstall the reservoir plug (51, page 24)), and refill the reservoir with clean, Graco approved hydraulic oil.

5

3

113

112

117

85

853

152

54

52

4

7

 

 

 

8

 

 

 

9

 

 

 

 

 

 

108

 

 

 

109

 

 

 

114

 

 

 

115

 

22

 

49,66

 

 

107

 

 

 

 

 

 

150,66,64

Fig 8

 

18

7876A

 

 

 

 

 

14308972

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Graco Inc 308972 manual 7876A
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308972 specifications

Graco Inc 308972 is a highly regarded product in the realm of fluid management systems, specifically designed for professionals who require efficient and reliable performance in their applications. This model is particularly popular among those in industries such as painting, automotive, and manufacturing, where precision and durability are critical.

One of the standout features of the Graco Inc 308972 is its advanced pump technology. This model is equipped with a robust pneumatic pump system that ensures consistent fluid delivery, minimizing the risk of uneven application. The pump's design allows it to handle a wide range of fluids, from water-based materials to viscous coatings, making it versatile for various tasks.

Another key characteristic of the Graco Inc 308972 is its user-friendly interface. The equipment is designed with ease of operation in mind, featuring simple controls that allow users to adjust settings on-the-fly. This is particularly beneficial in fast-paced environments where quick adjustments may be necessary to maintain productivity.

In terms of build quality, Graco is known for using high-grade materials that enhance the longevity of their products. The 308972 model is constructed to withstand the rigors of daily use, featuring corrosion-resistant components that extend its lifespan even in challenging conditions. This durability reduces the need for frequent replacements and repairs, providing excellent value for users.

The Graco Inc 308972 also boasts impressive safety features. It includes built-in pressure relief mechanisms that prevent over-pressurization, reducing the risk of accidents during operation. The model prioritizes user safety, ensuring that operators can work with confidence.

Moreover, the model is designed for easy maintenance. Regular upkeep is simplified by easily accessible components, allowing users to perform routine checks without extensive disassembly. This design consideration enhances the overall efficiency of operations, as downtime for maintenance is minimized.

Overall, the Graco Inc 308972 is a reliable and versatile solution for fluid management. With its advanced technology, user-friendly design, durability, and safety features, it stands out as an essential tool for professionals across various industries seeking efficiency and precision in their work. Whether for large industrial applications or smaller, detailed jobs, this model delivers the performance needed to complete tasks effectively.
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