Graco XP70 Air Controls, Remove Air Motor, Replace Air Control Assembly

Page 34

Repair

Remove Air Motor

1.Cycle the yoke and pump rods near the bottom of their stroke. Follow Shutdown, page 28.

2.Disconnect the air line from the air motor (103).

3.Remove the air motor rod cover (121) and pump guards (122).

103

121

122

r_258914_3a0420a_7a

4.Use a wrench to hold the tie rod (102) flats to keep the rods from turning. Unscrew the nuts (108) and washers (107) from the tie rods.

lift ring

102

104

111

	107	3a0420a 8a
	107	258914r
	108	258914r
	108
	109

5.Place a wrench on adapter rod (104). Use tool (70) to loosen the serrated yoke nut (109) that holds the air motor (103) above the yoke (111).

6.Face the front of the machine and slide the air motor (103) to the opening in the yoke (111).

7.Use a hoist to remove the air motor by the lift ring.

8.Refer to the air motor manual to service or repair the air motor.

9.Follow the steps in reverse order to reinstall the air motor.

NOTE: Position air motor for correct mix ratio. See Air Motor Position on page 18 for instructions. Torque nuts (108) to 50-60ft-lb (68-81 N•m).

Air Controls

See FIG. 8 on page 35.

Replace Air Control Assembly

1.Close the main air shutoff valve on the air supply line and on the system. Depressurize the air line.

2.Disconnect the air motor air lines and system air line.

3.Remove the nut (8) and washer (5). Remove the bottom air control manifold assembly from the cart.

4.Loosen the upper air control assembly from the air motor.

5.Follow the steps in reverse order to reinstall the new air control assembly.

Replace Air Filter Element

1.Close the main air shutoff valve on the air supply line and on the system. Depressurize the air line.

2.Unscrew the serrated ring on filter bowl (210).

3.Remove and replace the filter element (210a). See Air Controls, 258983, page 46.

Replace System Air Regulator

1.Close the main air shutoff valve on the air supply line and on the system.

2.Disconnect air motor air lines and system air line.

3.Remove the regulator assembly (201) and replace with new regulator. See Air Controls, 258983, page 46.

4.Follow the steps in reverse order to reassemble.

34

3A0420H

Image 34

Contents XP70 Plural-Component Sprayer Contents Related Manuals Manual DescriptionFire and Explosion Hazard Skin Injection Hazard Toxic Fluid or Fumes Hazard Important Two-Component Material Information B Component Designations Changing MaterialsMachine Left Machine Right Market Equipment Designations Usage OverviewOver Pressure Protection Initial System Setup Cart-Mounted XP70 Sprayers ModelsBare Proportioning Pump Packages Component Identification Mounting Components forFluid Control Assembly Main Air ControlsSolvent Flush Pump Kit 262393 optional Included with optional solvent flush pump kit KeyOptional Accessories Fluid Line AccessoriesFlush Before Using Equipment Air LineLocation SetupGrounding Wire Sprayers with Explosion-Proof Heaters Hazardous location sprayers onlyAir Motor Position Position Air MotorConnect Fluid Hose Bundles Remote Only Connect Air SupplyConnect Static Mixers, Gun, and Hoses Pressure Relief Procedure Relieve a and B Fluid PressurePrime Empty Sprayer Prime a and B FluidsPrime Solvent Flush Pump With Heat Recirculate or Re-Prime After a Pump Runs DryWithout Heat Heat FluidSpray Side Mix Manifold Restriction Flush Mix Manifold, Hose, and Spray Gun Follow Pressure Relief Procedure,Flush Mixed Material Use Optional Solvent PumpProcedure GuidelinesShutdown ParkSystem Verification Maintenance Troubleshooting Problem Cause SolutionPump Troubleshooting Remove Displacement Pump Pump AssemblyRemove Pump Assembly RepairRemove Air Motor Replace Air Control AssemblyAir Controls Replace Air Filter ElementAir Control Assembly Air FlowFluid Circulation Manifold Mix Manifold AssemblyReplace Drain Valve Cartridges Repair Hoppers Solvent PumpOptional Fluid Heaters Service and RepairReplace Parts Cart-Mounted XP70 Sprayer49 a 49 B 27, 28 32 27 Common Parts Part Description QtyParts Varying by Model with Hoppers Parts Varying by Model with No HoppersBare Proportioning Pump Package 122 106 105 135 117 108 101 138 139 140Ratio Description Varying Parts571100 571150 571200 571250 571300 571400 Qty 202 211 205 209 210 Ref. No. Part No. Description QtyFluid Manifold Part No. Description QtyPump Repair Kits Recommended Spare PartsPump Filter O-rings packs Calculate Pump Air Flow/Consumption Pump Performance ChartsCalculate Fluid Outlet Pressure 11 or 21 Mix RatioMix Ratio Pump Performance Charts31 Mix Ratio Psig BarMPa PressureAcceptable For Use in Explosive Atmospheres Accessories and KitsNot Approved For Explosive Atmospheres Technical Data Psi MPa, bar Psi MPa, psi Gpm ltr/minTop VIew DimensionsFloor Mounting Dimensions Top VIew Side VIewBare Proportioner Mounting Hole Dimensions Graco Standard Warranty Graco Information