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

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
	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