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PUMP SERVICE

To reduce the riskof serious bodily injury, including fluid injection, splashingthe eyes oron the skin,or injury from moving parts,always follow the Pressure Relief Procedure Warning on page 7 before proceeding.

NOTE: The following metric wrenches areneeded: M6 Allen wrench, M10, and M30.

A pump repair toolkit, P/N 800-271, is available. It includes packing, extractionand insertion tools

Repair kits are availableRefer. to the individual repairsections,and the parts pageformore details. For the best results,use all the parts in the kit.

Valves

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NOTE: To replace valves, order kit partno. 801- 472.

1.Remove the hex plug (205) from the manifold

(206)using anM30 wrench..

2.Examine the O-ring (204) under the plug and replace it if it is cutor distorted.

3.Remove the valve assembly(203)from thecavity; the assembly maycome apart.

4.Install a new valve (203). Install the O-ring (204) and plug (205) and torque'to75 ft-lb (10.3Nm).

NOTE: Retorque the plug after 5 hours of operation.

Pumping Section

1.Remove the eight Allenhead cap screws (201) and lockwasher (202) fromthe manifold (206) using a M6 Allen wrench.

2.Carefully separate the manifold from the crankcase. It may be necessry totapthe manifold lightly with a rubber mallet.

	CAUTION
	To avoid damaging the plungers or seals, keep
	the manifold properly alignedwith theceramic	-
	plungers when removingit.	-
	plungers when removingit.

3.Carefully examine each plunger (221) and replace it if there is anyscoring.

Servicing The V-Packings

NOTE: To replace just the v-packings, use kit part no. 801 -662 whichwill service the entire pump.

-To replace the v-packings, rings and retainers, orderthree ofkit partno. 801- 664 toservice the entirepump.

1.If the manifold is notalready removed, follow Steps 1 and 2of pumping section.

2.Carefullypull the packing retainer(214)fromthe manifold. Examine theO-ring (215) and replace it if it is cut or damaged.

3.Remove the v-packing(212)and head ring (211). Pull out the intermediate retainer ring (213). Remove the v-packing(212) and head ring (211).

4.Inspect all parts and replace as necessary.

5.Thoroughly clean the packing cavities and examine.

6.Lightly grease. the packing cavities and then replace the packings the followingorder: head

ring (211). v-packing (212). intermediate ring

(213),headring(211),packing(212),andpacking

retainer(214). with theO-ring (215) installed into the retainergroove.

order and facing the correct direction. See Figure 4. Improperly installed partswill cause a malfunction.

7.Reassemblethe manifoldas instructed inSteps 7 and 8 of Servicing The Plungers.

Servicing The Plungers

NOTE: Plunger repair kit, part no. 801-474, is available to service allthe plungers.

1.Loosen the plungerretaining screws (217). 5 to 6 turns, using anM10 wrench.Push the plunger

(221)toward the crankcase to separate the plunger and retaining screw.

2.Remove the screw (217) fromthe plunger and examine theO-ring (219).backup ring (220) and copper bearing/gasket washer (218). Replace these parts, if necessary,using kit partno. 801- 474.

3.Remove the plunger (221) and flinger (222)from the plunger shaft. Clean, examine and replace parts as necessary.

802-777 9

802-777, 800-233 specifications

Graco Inc, a leading manufacturer in fluid handling systems, offers a diverse range of products suitable for various industries. Among their extensive lineup, the Graco Inc 802-777 and 800-233 stand out for their advanced features and innovative technologies.

The Graco 802-777 is renowned for its electric airless paint sprayer, designed to streamline the painting process for professionals. Its compact size allows for easy maneuverability, making it ideal for both interior and exterior applications. A significant feature of the 802-777 is its ability to deliver consistent pressure, ensuring a smooth and uniform spray pattern, which is paramount for high-quality finishes. The unit is equipped with a ProConnect pump replacement system, allowing users to swap out pumps quickly without the need for additional tools, minimizing downtime on the job.

On the other hand, the Graco 800-233 model offers a different application focus. It's specifically engineered for material transfer and is suitable for coatings and sealants. This model is notable for its robust construction, ensuring durability even under demanding conditions. With its advanced diaphragm technology, the 800-233 offers reliable performance by effectively managing the transfer of various materials, reducing the risk of clogging and maintenance issues. The adjustable pressure settings on this machine allow operators to customize the output to match specific job requirements, enhancing versatility.

Both models incorporate Graco's patented technologies, such as EasyGlide technology in the 802-777, which aids in reducing the friction and improving efficiency during operation. Furthermore, both machines are user-friendly, with intuitive controls that enable operators to quickly learn how to use the tools effectively.

In terms of characteristics, both the Graco 802-777 and the 800-233 are lightweight and portable while still being powerful enough to handle a wide range of applications. Their design emphasizes ease of maintenance, allowing users to keep the equipment in peak condition with minimal effort.

Overall, Graco Inc continues to lead the industry with innovative solutions like the 802-777 and 800-233, ensuring that users can achieve professional results with efficiency and reliability across various applications. Whether it's painting or material transfer, these machines reflect Graco's commitment to quality and performance in fluid handling technology.