2535S OIPM
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Catalog excerpts

2535S OIPM - 1

Description > The Hypro 2535 triplex plunger pump is designed fordurability and top performance. The self-adjusting, spring-loaded V-packings maintain constant high pressure seal compression. Operators will also notice adecrease in the effects of abuse caused by cold start-upand intermittent operation with the robust crankshaft, bearings, and bronze connecting rod. Operators can also expect an extended life and lowercosts from the Model 2535S. The 316 stainless steel head and two-piece manifold are built to resist washout and corrosion, allowing the highest quality solutions tobe pumped with optimum performance. Seal life has also been improved. The stepped plunger rod between the plunger guide and oil seal will eliminate seal failure due to plunger rod wear. V-packings have also been used to extend seal and plunger life. Best of all, the innovative design offers operators easyservice access by bringing all of the maintenance towards the front. Flow Rate :38 gpm Max. Speed :800 rpm Max. Pressure :1200psi Ports :1-1/2 Inlet1Ԕ Outlet Shaft Diameter :35mm Weight :141 lbs. >

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2535S OIPM - 3

This pump was designed for rotation in one direction,which is toward the pump head when looking at the top of the pulley. There is a rotation direction sticker located oncrankcase bearing cover. Reverse rotation is acceptable if the oil level is increased by 1/2 quart.For determining proper pulley sizes, use the formulabelow as a guideline and use AӔ or BӔ section belts. > BushingPulley/SheaveBushing MOTOR RPM = FLOW (@RATED SPEED) = PUMPPULLEYDIA.PUMPRPMFLOW (DESIRED)MOTOR PULLEYDIA. EXAMPLE: : Use a 1725 rpm electric motor to drive thepump at 800 rpm. Atypical pulley diameter on the motor...

Open the catalog to page 3
2535S OIPM - 5

Figure 5 Figure 6 Figure 7 Figure 8 > 1.Remove (6) 41mm hex valve plug (Fig. 5).2.Remove the coil spring and thread a M10mm bolt into valve assembly (Fig. 6). Use a pliers to grip the bolt and remove valve assembly (Fig. 7). If resistance is encountered, gently rock bolt until valve comes free. 3.After removing, threading bolt more deeply into the assembly will separate the components. > 1.Inspect components and replace worn items as necessary.2.Assemble valve cage, spring retainer, spring, disc, and valve seat by snapping together (Fig. 8).3.Thread M10 bolt into assembly for installation....

Open the catalog to page 5
2535S OIPM - 6

1.Using a 10mm hex allen wrench, remove (8) socket head cap screws (Fig. 9).2.While supporting manifold, tap backside of discharge manifold with soft mallet, removing inlet manifold (Fig. 10).3.Remove o-rings from the interior face of the inlet manifold. Figure 9 Figure 10 Figure 11 Figure 12 > 1.Using a 12mm hex allen wrench, remove (4) outer socket head cap screws. Using 10 mm hex allen wrench, remove (4) inner socket head cap screws (Fig. 11).2.While supporting manifold, tap rear of inlet manifold with soft mallet and gradually work from pump. If necessary, use flat head screwdrivers to...

Open the catalog to page 6
2535S OIPM - 7

Figure 13 Figure 14 Figure 15 > DISASSEMBLING THE PACKINGS 1.Place inlet and discharge manifold spacer side up on work surface.2.Remove the spacer. If spacer is stuck, two screwdrivers may beused on opposite sides to gently pry it out (Fig. 13).3.Remove spring, spreader, packings and packing retainer(Fig. 14).4. Reinstall inlet manifold using proper torque specifications and torquing sequence. (See Torque Specification Chart on page 10.)5.Inspect components and replace worn items as necessary. It is recommended to replace spacer o-rings and back-up rings at this time.6.Lubricate packing...

Open the catalog to page 7
2535S OIPM - 10

PART DESCRIPTIONREF NO.TORQUE Valve Cap **95110 Ft-Lbs Inlet Manifold Bolts 74, 75, 7640 Ft-Lbs Discharge Manifold Bolts **8730 Ft-Lbs Plunger Retainer *2318 Ft-Lbs Rear Cover Bolts5010 Ft-Lbs Bearing Cover Bolts3810 Ft-Lbs Connecting Rod Bolts3232 Ft-Lbs *Use Medium Strength Threadlocker on Assembly** Use Anti-Seize on Assembly > CHECKDAILYWEEKLY50 hrs500 hrs1500 hrs5000 hrs Clean FiltersX Oil LevelX Oil LeaksX Water LeaksX Belts, PulleysX PlumbingX Initial Oil ChangeX Oil Change*X Seal ServiceX Valve ServiceX AccessoriesX >

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2535S OIPM - 11

SymptomProbable Cause(s)Corrective Action Pump runs but produces no flow.Pump is not primed.Flood suction, then restart pump. Pump fails to prime.Air is trapped inside pump.Disconnect discharge hose from pump. Flood suction hose, restart pump, and run pump until all air has been evacuated.Pump loses prime.Air leak in suction hose orRemove suction hose and test forChattering noise,inlet fittings.leaks by pressurizing hose with water.Pressure fluctuates.Make sure thread sealant has been used onall fittings.Suction line is blocked, Remove suction line and inspect it for a loosecollapsed or too...

Open the catalog to page 11
2535S OIPM - 12

THIS WARRANTYIS EXCLUSIVE. HYPRO MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED,INCLUDING BUT NOT LIMITED TO ANYWARRANTYOF MERCHANTABILITYOR FITNESS FOR A PARTICULAR PURPOSE. > Hypro warrants to the original purchaser of its products (the PurchaserӔ) that oil crankcase plunger pumps will befree from defects in material and workmanship under normal use for the period of five (5) years, and accessories will be free from defects in material and workmanship under normal use for the period of ninety (90) days. In addition, Hypro warrants to the purchaser all stainless steel pump manifolds will be...

Open the catalog to page 12

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