Repair. Graco 333208E, Electric High Pressure Airless Sprayer

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Repair. Graco 333208E, Electric High Pressure Airless Sprayer | Manualzz

Repair

Repair

Disconnect and Reconnect

Lower

To prevent skin injection and splashing, never open a camlock hose or applicator fitting while there is pressure in the fluid line. Perform Pressure Relief Procedure , page

10,

before performing any repair procedure.

The material and equipment may be hot. To avoid burns, do not touch hot fluid or equipment. Wait until equipment has cooled completely before performing any repair procedure.

1.

Flush pump; see Prime/Flush

, page 11. Stop pump

at bottom of its stroke.

2.

Perform Pressure Relief Procedure

, page 10.

3.

Disconnect unit from power source.

4.

Disconnect fluid hose. Disconnect suction hose.

Hold fluid inlet fitting with a wrench to keep it from loosening while you disconnect suction hose.

Xtreme Lower Removal

Required Tools

• Set of adjustable wrenches

• Torque wrench

• Rubber mallet

• Thread lubricant

• Anti-seize lubricant

• Thread sealant

Do not lift the pump by the lift ring when the weight exceeds 250 kg (550 lb). The lift ring could fail and result in personal injury or damage to the equipment.

Use caution when disconnecting lower; they can weigh up to 25 kg (55 lbs). Take appropriate precautions.

5.

If driver does not require service, leave it attached to its mounting.

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333208E 19

Repair

6.

Remove clip (11) and slide coupling cover (13) up to remove coupling (12).

11

8.

Refer to Xtreme Lower manual (311762) to service lower.

9.

Reconnect lower by following disconnect steps in reverse order.

NOTE: Torque nuts (10) to 50-60 ft-lb (68-81 N•m).

13

12

7.

Use a wrench to hold tie rod flats to keep rods (8) from turning. Unscrew nuts (10) and remove lower (9).

8

WLE

10

9

20 333208E

Repair

Outlet Check Valves

1.

Perform

Pressure Relief Procedure , page 10, and

disconnect unit from power source before removing or servicing outlet check valve.

2.

When replacing outlet check valve, reinstall with proper flow direction.

Outlet Check Valve Repair

1.

Flush pump (see Prime/Flush

, page 11). Stop the

pump at the bottom of the stroke.

2.

Perform

Pressure Relief Procedure , page 10.

3.

Disconnect unit from power source.

4.

Place a waste container below the outlet check valve to catch any material.

6.

Use a wrench to loosen the outlet check valve, then remove the outlet check valve from the pump lower.

NOTE: The pressure drain valve may remain attached to the outlet check valve housing during repair if needed.

7.

Remove the outlet check valve nut from the valve housing.

8.

Remove and clean all internal outlet check valve components. Inspect all components for wear or damage and replace components as needed.

9.

Reassemble parts in the reverse order they were removed; ball guides (3), spring retainer, compression spring, and ball. Use a small blunt tool to push the ball in and verify that the ball and spring move freely.

10. Replace the o-ring and coat with grease.

NOTICE

The o-ring is designed to be crushed and should not be reused. The o-ring must be replaced every time the outlet check valve housing is opened. If the o-ring is reused, damage to equipment could occur.

11. Torque the outlet check valve nut onto the housing to 75-80 ft-lb (101-108 N•m).

NOTE: If the pressure drain valve was removed for the outlet check valve repair, reinstall at this point.

12. Reattach the outlet check valve to the pump lower and verify the flow indication arrow is pointing away from the pump and that the pressure drain valve outlet is facing the ground.

WLD

5.

Use two wrenches to loosen the hose, then disconnect the hose from the outlet check valve housing.

WLD

13. Attach the dispense hose to the outlet check valve.

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333208E 21

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