Servicing the V±Packings

NOTE: There are two types of packing kits: one is just packings only, the other includes the packings, rings and retainers.

1.Remove the manifold as outlined in the Pumping Section.

2.Carefully pull the packing retainer from the manifold. Examine the o±ring and replace it if it is cut or damaged.

3.Remove the v±packing and head ring. Pull out the intermediate retainer ring. Remove the second v±packing and second head ring.

4.Inspect all parts and replace as necessary.

5.Thoroughly clean the packing cavities and examine for debris and damage.

6.Lightly grease the packing cavities and then replace the packings in the following order: head ring, v±packing, intermediate ring, head ring, v±packing and packing retainer with the o±ring installed in the retainer groove.

CAUTION

Install the parts in the proper order and facing the correct direction. Improperly installed parts will cause a malfunction.

7.Reassemble the manifold as instructed in Servicing the Plungers.

ACCESSORIES

(Must be purchased separately)

DOWNSTREAM CHEMICAL INJECTOR KIT 800±117

For injecting harsh cleaning chemicals downstream from the pump.

UPSTREAM CHEMICAL INJECTOR KIT 800±257

For injecting mild cleaning chemicals upstream into the pump.

TECHNICAL DATA

BACKFLOW PREVENTOR 801±133

Prevent back±up of contaminated water into fresh supply. Install upstream of pump.

ANTI±FREEZE FLUSH KIT 802±327

For flushing system with 50% anti±freeze solution prior to transporting or storing pressure washer in below freezing temperatures.

INLET PRESSURE REGULATOR 800±258

Regulates inlet water pressure to 60 psi (4 bar) maximum.

 

Model 800±670

Model 800±671

Model 800±672

Model 800±674

 

 

 

 

 

Engine

5 hp Briggs &

5 hp Honda OHV

8 hp Briggs &

8 hp Honda OHV

(air±cooled, 4 cycle)

Stratton I/C

 

Stratton I/C

 

Gasoline Tank Capacity

3 quarts (2.8 liter)

3.8 quarts (3.6 liter)

6 quarts (5.7 liter)

6.2 quarts (6 liter)

Water Pump Maximum

1500 psi (103 bar)

1500 psi (103 bar)

2000 psi (138 bar)

2000 psi (138 bar)

Working Pressure

 

 

 

 

Water Pump Maximum Flow

3.5 gpm (13 lpm)

3.5 gpm (13 lpm)

4 gpm (15 lpm)

4 gpm (15 lpm)

 

 

 

 

 

Inlet Hose Connection

3/4º garden hose (f)

3/4º garden hose (f)

3/4º garden hose (f)

3/4º garden hose (f)

 

 

 

 

 

Weight

105 lb (48 kg)

105 lb (48 kg)

152 lb (68 kg)

158 lb (70 kg)

Dimensions

37º (940 mm)

37º (940 mm)

36º (914 mm)

36º (914 mm)

Length

Width

19º (483 mm)

19º (483 mm)

21º (533 mm)

21º (533 mm)

Height

20º (508 mm)

20º (508 mm)

22.5º (572 mm)

22.5º (572 mm)

 

 

 

 

 

Maximum Inlet Water

160_￿ F (70_￿ C)

160_￿ F (70_￿ C)

160_￿ F (70_￿ C)

160_￿ F (70_￿ C)

Temperature

 

 

 

 

Wetted Parts

Acrylonitrile and Buna±N cover and tube

 

 

High Pressure Hose

 

 

Bypass Hose

Synthetic yarn and EPDM

 

 

Pressure Washer

Anodized aluminum, Aluminum or bronze alloys, Brass Copper, Nylon±PTFEr composite,

(including fittings)

Ceramic, Buna±N, Cotton phenolic, 303, 304, and 316 Stainless steel, Polymide±12

 

thermoplastic, PTFE,r Carbon steel, Zinc with or without yellow chromate plate

 

r

 

 

 

 

 

 

 

 

 

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Graco Inc 800-671, 308-523, 800-672, 800-674, 800-670 manual Accessories, Technical Data, Servicing the V±Packings

800-670, 800-671, 800-674, 800-672, 308-523 specifications

Graco Inc is a leading manufacturer of fluid handling systems and products, recognized for its innovative solutions in a variety of industries, including construction, automotive, industrial, and more. Among its extensive lineup, Graco offers a range of air-assisted airless sprayers, electric sprayers, and hydraulic sprayers, designed for professional applications. The model numbers 800-674, 308-523, 800-670, 800-672, and 800-671 refer to specific units designed to meet diverse needs, each boasting unique features that contribute to efficiency, precision, and ease of use.

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