Remove Motor, Replace Air Control Assembly | Graco 3A0420T instruction

Repair

Remove Motor

1.Stop the pumps near the bottom of their stroke. Fol- low Shutdown, page 30.

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

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

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 Motor Position on page 20 for instructions. Torque nuts (108) to 50-60 ft-lb (68-81 N•m).

Air Motor shown	103
	103	Air Controls
		Air Controls
121		See FIG. 10 on page 37.

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.

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.

Air Motor shown

lift ring

102

104

111

107	2589143a0420a 8a
107
108
109	r_
109

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 52.

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.

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).

3.Remove the regulator assembly (201) and replace with new regulator. See Air Controls, 258983, page 52.

4.Follow the steps in reverse order to reassemble.

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

36

3A0420T

Image 36

Graco 3A0420T Remove Motor, Replace Air Control Assembly, Replace Air Filter Element, Replace System Air Regulator

Contents

XP Proportioners Contents Related Manuals Fire and Explosion Hazard Skin Injection Hazard Toxic Fluid or Fumes Hazard Important Two-Component Material Information Changing Materials B Component DesignationsEquipment Designations Overview UsageOver Pressure Protection Initial System Setup Models Cart-Mounted Systems Pump Volume Max Fluid Max Air Mix Gallon Bare Proportioning Pump Packages Building systems with bare proportioning pumpPackages Over Pressure Protection must be used, see Component Identification Mounting Components for Fluid Control Assembly Main Air Controls Solvent Flush Pump Kit 262393 optional Pump KeyAir Controls Fluid Line Accessories Flush Before Using EquipmentOptional Accessories Air Line Setup LocationGrounding Wire Systems with Explosion-Proof Heaters Hazardous location systems only Motor Position Check Motor PositionChange Motor Position Connect Air Supply Connect Fluid Hose Bundles Remote Mix Manifold OnlyConnect Static Mixers, Gun, and Hoses Pressure Relief Procedure Relieve a and B Fluid Pressure Prime Empty System Prime a and B Fluids Prime Solvent Flush Pump Heat Fluid Follow Prime Empty System, Spray To Adjust the Restrictor Side Mix Manifold Restriction Follow Pressure Relief Procedure, Flush Mixed MaterialFlush Mix Manifold, Hose, and Spray Gun Use Optional Solvent Pump Procedure Guidelines Shutdown Park System Verification Maintenance Troubleshooting Problem Cause Solution Pump Troubleshooting Hardener Pump FallingTrouble Area Resin Pump Leakage Resin Pump Pump Assembly Remove Pump AssemblyRemove Displacement Pump Repair Replace Air Control Assembly Remove MotorReplace Air Filter Element Replace System Air Regulator Air Control Assembly Air Flow Mix Manifold Assembly Fluid Circulation Manifold with Over Pressure Relief ValvesReplace Over Pressure Relief Valves Fluid Circulation Manifold Replacement Guide CirculationTarget Opening Manifold Valve Pressure Color Psi MPa, bar Use with Hoppers Optional Solvent Pump Service and Repair Optional Fluid HeatersReplace Parts Cart-Mounted System Standard Mix Manifold Models Quickset Mix Manifold Models Parts Common to All Systems Description Qty Washer Parts Varying By Model XP35 Systems Ref Part Description Coupling 283101 283102 283201 283202 283301 283302 283401 283402 Parts Varying By Model XP70 Systems Part Description Bare Proportioning Pump Package Model 571100 shown Parts Common to All Pump Packages Parts Varying by Pump Package Air Controls Qty Ref. No. Part No. Description Assembly 262784 XP35 262783 XP50 262806 XP70 Fluid Circulation Manifold with Over Pressure Relief ValvePart Description Qty Ref Manifold to also fit Series a XP Proportioners with Recommended Spare Parts Pump Repair KitsPump Filter O-rings packs Recirculation/Overpressure valve see Accessories and Kits Acceptable For Use in Explosive Atmospheres Not Approved For Explosive Atmospheres Technical Data Dimensions Top ViewSide View Floor Mounting Dimensions, Top View Bare Proportioner Mounting Hole Dimensions Wall Mount Bracket 262812 Dimensions Floor Stand 24M281 Dimensions Hydraulic Unit Dimensions Dimensions 3A0420T Graco Standard Warranty Graco Information