804±559 Pump Service

WARNING

To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the

Pressure Relief Procedure Warning on page 5

before proceeding.

NOTE: The following metric wrenches are needed: 6 mm, 13 mm and 27 mm. Repair kits are available. Refer to the individual repair sections and the pump parts page for more details. For the best results, use all parts in the kits.

NOTE: There is a tool kits to aid in servicing the pump. P/N 800±271 includes tools to aid in the removal of packing retainers.

Valves

NOTE: For a set of six valves, order P/N 801±472.

1.Remove the hex plug from the manifold using a 27 mm socket.

2.Examine the o±ring under the hex plug and replace it if it is cut or distorted.

3.Remove the valve assembly from the cavity; the assembly may come apart.

4.Install the new valve. Install the o±ring and hex plug; torque to 73 ft±lb (99 Nm).

NOTE: Retorque the plug after 5 hours of operation.

Pumping Section

1.Remove the eight capscrews and lockwashers from the manifold using a 6 mm wrench.

2.Carefully separate the manifold from the crankcase.

NOTE: It may be necessary to tap the manifold lightly with a soft mallet to loosen.

CAUTION

Keep the manifold properly aligned with the ce- ramic plungers when removing to avoid damage to the plunger or seals.

3.Carefully examine each plunger for any scoring or cracking and replace as necessary.

Servicing the Plungers

NOTE: Plunger repair kit, P/N 801±474 is available to replace retainers, o±rings, washers and backup rings for three cylinders.

1.Loosen the plunger retaining nut five to six turns, using a 13 mm wrench. Push the plunger towards the crankcase to separate the plunger and retaining screw.

2.Remove the nut from the plunger and examine the o±ring, backup ring and copper bearing/gasket washer. Replace these parts, if necessary, using kit 801±474.

3.Remove the plunger and flinger from the plunger shaft. Clean, examine and replace parts as necessary.

4.Inspect the plunger shaft for oil leakage from the crankcase. If leaking is obvious, replace the oil seals. Otherwise, DO NOT remove these seals as they cannot be reused. An oil seal kit is available to replace the seals.

5.Lightly grease the flinger and oil seal, if it is being replaced and replace them on the plunger shaft. Then install the plunger.

824±001 13

2800, 824-001, 824-007, 824-006 specifications

Graco Inc., a leader in fluid handling systems and components, is well-known for its innovative products that cater to various industries. Among its diverse range, the 824-006, 824-007, 824-001, and 2800 models stand out for their outstanding performance and reliability.

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The Graco 2800 is known for its versatility and robust performance across various applications. This model is equipped with advanced technology that enhances its operational efficiency, including adjustable pressure settings and automated controls for a seamless user experience. The 2800 is particularly effective for high-volume applications, with the ability to handle larger quantities of fluid without sacrificing accuracy or performance. Its ergonomic design also contributes to operator comfort, reducing fatigue during extended use.

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