Graco Inc 308972 manual Relieve the pressure

Page 17

Displacement Pump Service

236466, 237510, 222801 Displacement Pumps

Disconnecting the Displacement Pump

1.Flush the pump, if possible. Stop the pump at the bottom of its stroke.

Reconnecting the Displacement Pump

1.Make sure coupling nut (170) and coupling collars (80) are in place on displacement rod (Ref. 29).

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 10.

2.Relieve the pressure.

3.Reference Roof Rig Parts Drawings, pages 18 through 21.

4.Disconnect the air or hydraulic hose and the fluid hose. Plug all hydraulic hoses immediately, to prevent contamination of the hydraulic system.

5.Disconnect the displacement pump (46) from the motor (29) as follows. Note the relative position of the pump fluid outlet (81) to the hydraulic inlet (76) of the motor. If the motor does not require servic- ing, leave it attached to its mounting.

CAUTION

Use at least two people when lifting, moving, or dis- connecting the pump. This pump is too heavy for one person. Support the displacement pump while it is being disconnected, to prevent it from falling and causing injury or property damage.

If the pump is mounted on a cart, slowly tip the cart backward until the handle rests on the ground, then disconnect the displacement pump.

6.Using an adjustable wrench (or hammer and punch), unscrew the coupling nut (170) from the motor shaft ( Ref. 29). Take care not to lose or drop the coupling collars (80).

7.Hold the tie rod flats with a wrench to keep the rods from turning. Unscrew the nuts (48) from the tie rods (47). Carefully remove the displacement pump (46) from the motor (29).

8.Refer to separate manual listed in parts list for displacement pump service. To service the hydrau- lic motor, refer to the separate motor manual, supplied.

2.Use at least two people to hold the displacement pump while another reconnects it to the motor (see the preceding CAUTION). Orient the pump fluid outlet (81) to the hydraulic inlet (76) as was noted in step 5 under Disconnecting the Displacement Pump. Position the displacement pump (46) on the tie rods (47).

3.Screw the nuts (48) onto the tie rods (47) and torque to 81±89 N.m (60±66 ft-lb).

4.Screw coupling nut onto motor shaft (Ref. 29), loosely. Hold the motor shaft flats with a wrench to keep it from turning. Use an adjustable wrench to tighten the coupling nut. Torque to 196±210 N.m (145±155 ft-lb).

5.Reconnect all hoses. Reconnect the ground wire if it was disconnected. Fill the packing nut (2) 1/3 full of Graco Throat Seal Liquid or compatible solvent.

6.Turn on the hydraulic power supply. Open the hydraulic return line valve first, then the supply line valve. Run the pump slowly to ensure proper operation.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 10.

7.Before returning the pump to production, relieve the pressure and retorque the packing nut (2) to 136±149 N.m (100±110 ft-lb).

308972 17

Page 16 Page 18
Image 17
Page 16 Page 18
Contents This manual contains important warnings and information 308972Read and Keep for Reference ModelSymbols Table of ContentsInjection Hazard Fire Skin Injection Explosion Hazard Fire and Explosion HazardConnect the Hose and Gun SetupComponent Identification Check the Engine Oil Level Grade of OIL ChartCheck the Hydraulic Oil Level Fire and Explosion Hazard GroundingHow to Flush When to FlushFlushing Startup after storageFlushing Operation Pressure Relief ProcedurePrepare the Fluid Starting the SprayerPrime the Pump Cleaning a Clogged TipAdjusting the Intake Valve Ball Travel Maintenance Problem Troubleshooting7876A 108 B Dimension a 0.05º Mm ±0.254Reconnecting the Displacement Pump Displacement Pump Service210±208 Displacement Pump Disconnect the Displacement Pump Relieve the pressure GH5030 Roof Rig Parts Drawing GH3640 Roof Rig Parts Drawing GH2560 Roof Rig Parts Drawing GH2075 Roof Rig Parts Drawing GH1015 Roof Rig Parts Drawing Models 687100, 687327 965171 965165 Roof Rigs Sprayer Parts Drawing7879A Description QTY Roof Rigs Parts ListPage Accessories Technical DataGraco Phone Number GRACO±APPROVED Hydraulic FluidFor Graco Canada Customers Graco WarrantyAdditional Warranty Coverage

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.
Top Page Image Contents