Graco Inc 308-530, 800-700 manual Servicing the Plungers, Servicing Crankcase Section, Reassembly

Page 27

4.With crankcase side of manifold down remove hi–pressure seals using a reverse pliers.

5.Invert manifold so crankcase side is up and with reverse pliers remove low pressure seals.

Reassembly:

1.Examine low pressure seal for seal wear or spring failure and replace if necessary. With crankcase side of inlet manifold up, lubricate seal and press into

valve chamber with garter spring down. Carefully square seal into position.

2.Examine hi–pressure seal for wear and replace if necessary. Invert inlet manifold with crankcase side down, lubricate seal and press into chamber with v–side up. Carefully square into position.

3.Rotate shaft so the two (2) outside plungers are extended and lined–up.

4.Lubricate plungers and discharge valve adapter o–rings.

5.Carefully line–up and join the inlet and discharge manifolds by pressing the protruding discharge valve adapters into the inlet manifold seal chambers.

6.Replace all four (4) discharge manifold socket head bolts and washers and hand tighten.

7.Then carefully slip manifold assembly onto plungers and tap with soft mallet until flush with crankcase.

8.Replace the two (2) inlet manifold socket head bolts and washers and hand tighten. Then torque per chart.

9.Then torque the four (4) discharge manifold socket head bolts per chart.

Servicing the Plungers

Disassembly:

1.Remove discharge and inlet manifold as described.

2.Using a wrench loosen plunger retainers approximately three (3) to four (4) turns.

3.Grasp ceramic plunger and push towards crankcase until plunger retainers with stud pop out.

4.Remove plunger retainer and copper gasket.

5.Remove ceramic plunger from plunger rod.

6.Remove barrier slinger from plunger rod.

Reassembly:

1. Replace barrier slinger if necessary and position onto plunger rod.

2.Carefully examine ceramic plunger for scoring or cracks and replace if worn. Slip onto rod.

NOTE: Ceramic plunger can only be installed one direction (front to back). Do not force onto rod.

3.Examine o–ring and back–up ring on plunger retainer and replace if worn or cut. Lubricate o–ring for ease of installation and to avoid damage to o–rings.

NOTE: First install NEW copper gaskets on plunger retainers, then back–up rings and o–rings.

4.Install short threaded end of stud into plunger retainer.

5.Thread plunger retainer and stud assembly into plunger rod and torque per chart. (Long threaded end of stud into plunger rod.)

NOTE: Exercise caution not to over torque the plunger retainer.

6.Rotate shaft so the two (2) outside plungers are extended and lined–up. Then lubricate plungers.

7.Replace all four (4) discharge manifold socket head bolts and washers and hand tighten.

8.Then carefully slip manifold assembly onto plungers and tap with soft mallet until flush with crankcase.

9.Replace the two (2) inlet manifold socket head bolts and washers and hand tighten. Then torque per chart.

10.Then torque the four (4) discharge manifold socket head bolts per chart.

Servicing Crankcase Section

1.While inlet manifold, plungers and seal retainers are removed, examine crankcase seals for wear.

2.Check oil level and for evidence of water in oil.

3.Rotate crankshaft by hand to feel for smooth bearing movement.

4.Examine crankshaft oil seal externally for drying, cracking or leaking.

5.Consult factory or your local distributor if crankcase service is required.

 

 

Torque Chart

 

 

 

 

 

 

 

 

 

Pump Part

 

Thread

 

Tool Size

 

Torque

Plunger Retainer

 

M5

 

11 mm hex

 

80 in. lbs.

Inlet Manifold

 

M10

 

8 mm allen

 

132 in. lbs.

Bolts

 

 

 

 

 

 

Discharge

 

M10

 

8 mm allen

 

180 in. lbs.

Manifold Bolts

 

 

 

 

 

 

308–530 ￿7

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Page 26 Page 28
Contents 800-699, Series a 1535 2040 2540Rev a 800-698, Series aTerms IndexMoving Parts Hazard General SafetyPressure Relief Procedure Spray Gun Safety DevicesSystem Pressure Hose SafetyEquipment Misuse Hazard Fuel and Emission HazardsCheck for Shipping Damage InstallationSet Up 1535Startup Trigger Safety Latch Installing and Changing Spray TipsFollow the Pressure Relief Procedure Interval What to do MaintenancePressure Relief Procedure SHUTDOWN, Flushing StorageProblem Troubleshooting ChartParts Drawing Hydra-Cleanr1535 Pressure WasherPart Description QTY Parts ListHydra-Cleanr2040 Pressure Washer WASHER, Flat 3/8 804-249 Assembly incl 802-139 Hydra-Cleanr2540 Pressure Washer FILTER/STRAINER Replacing the Oil Seal Gear Reducer Service ModelReplacing the O-Ring Replacing the GasketBearing Gear Reducer ModelReplacing the Oil Seals Gear Reducer Service Models 2040Gear Reducer Models 2040 Pump Assembly, 1500 psi 804-101 Kit Repair Kit Description Qty 804-102Pump Assembly, 2000 psi 804-096 Kit Repair Kit Description Qty 804-100Pump Assembly, 2500 psi 804-234 STUD, Retaining 6mm x 64,5mm Kit Repair Kit Description Qty 804-098804-097 Pump Service Model Servicing the ValvesServicing the Seals Servicing Crankcase Section ReassemblyTorque Chart Pump Part Thread Tool Size Servicing the PlungersServicing the Seals and V-Packings Pump Service Models 2040308-530 Reassembly Servicing the Pumping SectionLow Pressure Seal-All Models ReassemblyPacking Models High Pressure Seal ModelsDownstream Chemical Injector KIT 800-117 AccessoriesModel Technical DataGraco Warranty Important Phone NumbersGraco INC. P.O. BOX 1441 MINNEAPOLIS, MN

800-700, 308-530, 800-698, 800-699 specifications

Graco Inc is a renowned manufacturer specializing in fluid handling systems used in a variety of applications, particularly in industries such as construction, automotive, and manufacturing. Among their extensive product lineup, models 800-699, 800-698, 308-530, and 800-700 stand out for their innovative features and advanced technologies.

The Graco 800-699 is a versatile air-operated double diaphragm pump designed for high efficiency and reliable performance. Its robust construction includes a corrosion-resistant housing ideal for handling tough fluids. The pump can effectively operate at various pressures, making it suitable for tasks ranging from transferring chemicals to applying coatings. With its easy maintenance design, operators can quickly access key components, minimizing downtime.

Model 800-698 shares similar attributes but is distinguished by its emphasis on portability and ergonomic design. This pump model is lightweight and features a compact form factor, allowing easier transport and setup for mobile applications. Its intuitive controls enable precise flow rate adjustments, giving operators enhanced control over their fluid-handling tasks. Additionally, it is designed for compatibility with a wide range of fluids, enhancing its versatility across different applications.

The 308-530 model is notable for its electric-driven technology. This feature makes it ideal for environments where compressed air is not available or where a quieter operation is required. The 308-530 is equipped with advanced control systems that optimize energy consumption without compromising performance. Moreover, its integrated safety features ensure reliable operation while protecting both the equipment and the operator.

Finally, the Graco 800-700 represents the pinnacle of efficiency in fluid transfer systems. This model utilizes state-of-the-art technology to provide faster flow rates and improved material compatibility. The 800-700 is engineered to handle a wide range of viscous materials, making it perfect for heavy-duty applications. The modular design allows for easy upgrades, ensuring users can keep pace with emerging technologies without extensive disruptions to their operations.

Collectively, these Graco models embody a commitment to quality, durability, and user-friendly design, allowing companies to streamline their processes and enhance productivity in fluid handling tasks. With ongoing advancements and a focus on customer satisfaction, Graco Inc continues to be a leader in this industry.
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