35 Frame Plunger Pump - Cat Pumps: World Leader …

1 ELECTRIC HORSEPOWER REQUIREMENTS FLOW PRESSURE rpm psi psi psi psi 1200 1500 1800 2000 bar bar bar bar gpm lpm 85 105 125 140 23 87 800 20 76 696 18 68 626 SPECIFICATIONS Measure Metric MeasureFlow ..23 gpm (87 lpm)Pressure Range ..100 to 2000 psi (7 to 140 bar)Inlet Pressure Range.

2 Flooded to 70 psi (Flooded to bar) rpm (800 rpm)Bore .. (32 mm)Stroke .. (48 mm)Crankcase Capacity .. Qts. (4 l)Maximum Liquid Temperature ..160 F (71 C)Above 130 F call CAT pumps for inlet conditions and elastomer Ports (2) ..1-1/2 NPTF (1-1/2 NPTF)Flushing Ports (2) (3520C, 3521C) ..1/4 NPTF (1/4 NPTF)Discharge Ports (2) ..1 NPTF (1 NPTF)Pulley Mounting ..Either Side (Either Side)Shaft Diameter .. (35 mm)Weight ..139 lbs. (63 kg)Dimensions (3520, 3520C,) .. x x (606 x 460 x 247 mm)Dimensions (3521 3521C, 3527) x x (618 x 460 x 247 mm)FEATURESl Triplex design delivers high effiency and low Durable dual V-Packings are lubricated and cooled by pumped Pre-set Lo-Pressure seals provide secondary protection against external leaks and require no packing Special high-density, polished.

3 Concentric plungers provide a true wear surface and extended seal Specially formulated Seals and V-Packings offer unmatched per-formance and extended Interchangeable inlet and discharge valves for easy Wet-end easily serviced without entering Rated gpm = Desired gpmTHE PUMP Rated rpm Desired rpmDETERMINING gpm x psi = Electric BrakeTHE REQUIRED 1460 H. P. RequiredDETERMINING Motor Pulley = Pump Pulley PULLEY SIZE Pump rpm Motor rpmSee complete Drive Packages [Inclds: Pulleys, Belts, Hubs, Key] Tech Bulletin to pump Service Manual for repair procedure and additional technical information.

4 35 FramePlunger Pump 3520,3520C 3521,3521C 3527 BrassStandard and FlushedStainless SteelStandard and FlushedNickel Aluminum BronzeStandardAll High Pressure Systems require a primary pressure regulating device ( regulator, unloader) and a secondary pressure relief device ( pop-off valve, relief valve). Failure to install such relief devices could result in personal injury or damage to pump or property. CAT pumps does not assume any liability or responsibility for the operation of a customer s high pressure all CAUTIONS and WARNINGS before commencing service or operation of any high pressure system. The CAUTIONS and WARNINGS are included in each service manual and with each Accessory Data sheet.

5 CAUTIONS and WARNINGS can also be viewed online at or can be requested directly from CAT pumps . Model 3520 Shown(Shaft Protector included, mounting Rails sold seperatly) PARTS LIST ITEM PART NUMBER DESCRIPTION QTY 3520/C MATL 3521/C MATL 3527 MATL234021 STL34021 STL34021 STLKey (M10x8x70)15125753S125753S125753 SScrew, HHC Sems (M8x25)8844542AL44542AL44542 ALCover, Bearing 29815279 FBR815279 FBR815279 FBRShim, Split, 2-PC21012398 NBR12398 NBR12398 NBRO-Ring, Bearing Cover - 70D21113296 NBR13296 NBR13296 NBRSeal, Oil, Crankshaft21529326 STL29326 STL29326 STLB earing, Roller220121467 TNM121467 TNM121467 TNMRod, Connecting Assy (Inclds.)

6 21, 22, 23) [10/00]321126749 STCP R126749 STCP R126749 STCP RWasher, Locking322126593 STCP R126593 STCP R126593 STCP RWasher, Flat (M10)623122045 STZP122045 STZP122045 STZPS crew, HH (M10x55)62529325 FCM29325 FCM29325 FCMC rankshaft, Dual End131828710PE828710PE828710 PEProtector, Oil Cap w/Foam Gasket13243211 ABS43211 ABS43211 ABSCap, Oil Filler13314177 NBR14177 NBR14177 NBRO-Ring, Oil Filler Cap - 70D134126743 STCP R126743 STCP R126743 STCP RBolt, Eye ( ) (For Lifting Pump Only)13792241 92241 92241 Gauge, Oil, Bubble w/Gasket - 80D13844428 NBR44428 NBR44428 NBRG asket, Flat Oil Gauge - 80D140125753S125753S125753 SScrew, HHC Sems (M8x25)84825625 STCP25625 STCP25625 STCPPlug, Drain (1/4 x19 BSP)14923170 NBR23170 NBR23170 NBRO-Ring, Drain Plug - 70D15045936AL45936AL45936 ALCover, Rear15116612 NBR16612 NBR16612 NBRO-Ring, Cover - 70D15344487AL44487AL44487 ALCrankcase Assy (Inclds.

7 34, 54)15427488S27488S27488 SPins, Guide25627790 POP27790 POP27790 POPPan, Oil15992538S92538S92538 SScrew, HHC Sems (M6x16)26443864CM43864CM43864 CMPin, Crosshead365 45116 SSZZ 45116 SSZZ 45116 SSZZRod, Plunger369126587 STCP R126587 STCP R126587 STCP RWasher, Oil Seal370100488 NBRS100488 NBRS100488 NBRSSeal, Oil, Crankcase344739 FPM44739 FPM44739 FPMSeal, Oil, Crankcase37543865S43865S43865 SSlinger, Barrier 38845676S45676S45676 SWasher, Keyhole (M16)39043957CC43957CC43957 CCPlunger (M32x145)395 89778SS 89778SS 89778 SSStud, Plunger Retainer (M10x135)39620189 PTFE20189 PTFE20189 PTFEBack-up-Ring, Plunger Retainer39711345 NBR11345 NBR11345 NBRO-Ring, Plunger Retainer - 70D311375 FPM11375 FPM11375 FPMO-Ring, Plunger Retainer3u701490 EPDMu701490 EPDMu701490 EPDMO-Ring, Plunger Retainer3702961 IPFE702961 IPFE702961 IPFEO-Ring, Plunger Retainer - 70D39844085SS44085SS44085 SSGasket, Retainer39944084SS44084SS44084 SSRetainer, Plunger (M10)310044119 PPG814279 PVDF814279 PVDFR etainer, Seal (See Tech Bulletin 105)

8 310144106 44106 44106 Wick, Long Tab310443875 NBR43875 NBR43875 NBRO-Ring, Inlet Adapter - 70D344826 FPM44826 FPM44826 FPMO-Ring, Inlet Adapter - 70D3u701656 EPDMu701656 EPDMu701656 EPDMO-Ring, Inlet Adapter - 70D3702977 IPFE702977 IPFE702977 IPFEO-Ring, Inlet Adapter310549741BB45562SS45562 SSAdapter, Inlet310644098 NBR44098 NBR44098 NBRSeal, LPS w/SS-Spg344827 FPM44827 FPM44827 FPMSeal, LPS w/SS-Spg3u48244 EPDMu48244 EPDMu48244 EPDMSeal, LPS w/SS-Spg376298ST 276298ST 276298ST 2 Seal, LPS w/S-Spg310743962S44101SS44101 SSWasher311049464 BBCP R45365SS45124 NABM anifold, Inlet149464 CBBCP R125397SS Manifold, Inlet, Flushed (1/4 Flush Ports)111211379 NBR11379 NBR11379 NBRO-Ring, Inlet Manifold - 70D314183 FPM14183 FPM14183 FPMO-Ring, Inlet Manifold 3u701491 EPDMu701491 EPDMu701491 EPDMO-Ring, Inlet Manifold - 70D3702705 IPFE702705 IPFE702705 IPFEO-Ring, Inlet Manifold311744585S44585S44585 SScrew, HSH (M14x40)412249744BB49782SS49782 SSSpacer (See Tech Bulletin 114)312312391 NBR12391 NBR12391 NBRO-Ring, V-Packing Cylinder - 70D313266 FPM13266 FPM13266 FPMO-Ring, V-Packing Cylinder - 70D3u701657 EPDMu701657 EPDMu701657 EPDMO-Ring, V-Packing Cylinder -70D3703481 IPFE703481 IPFE703481 IPFEO-Ring, V-Packing Cylinder312449742BB49783SS49783 SSCylinder, V-Packing (See Tech Bulletin 114)

9 312643963BB48390D48390 DAdapter, Female3 45564SS45564 SSAdapter, Female3127 44608 STG*44608 STG*44608 STG*V-Packing644829 SFG44829 SFG44829 SFGV-Packing 612843965BB45565SS45565 SSAdapter, Male 314149743SS49743SS49743 SSSpring, Coil (See Tech Bulletin 114)315848362D48362D48362 DBack-up-Ring, V-Packing Cylinder315948860 NBR48860 NBR48860 NBRO-Ring, V-Packing Cylinder - 90D320137 FPM20137 FPM20137 FPMO-Ring, V-Packing Cylinder -70D3u701492 EPDMu701492 EPDMu701492 EPDMO-Ring, V-Packing Cylinder3702963 IPFE702963 IPFE702963 IPFEO-Ring, V-Packing Cylinder -70D316248363D48363D48363 DBack-up-Ring, Valve Seat616326142 NBR26142 NBR26142 NBRO-Ring, Seat - 80D614330 FPM14330 FPM14330 FPMO-Ring, Seat - 70D 6u701493 EPDMu701493 EPDMu701493 EPDMO-Ring, Seat 6702808 IPFE702808 IPFE702808 IPFEO-Ring, Seat616444727S44612SS44612 SSSeat.

10 Stepped616643932S44108SS44108 SSValve616744109SS44109SS44109 SSSpring616844728 PVDF44728 PVDF44728 PVDFR etainer, Spring617044729SS44729SS44729 SSWasher, Spring Retainer617144644SS44644SS44644 SSCoil Spring (70kg), Valve Plug617289827 NBR89827 NBR89827 NBRO-Ring, Valve Plug - 90D611747 FPM11747 FPM11747 FPMO-Ring, Valve Plug - 90D6u701494 EPDMu701494 EPDMu701494 EPDMO-Ring, Valve Plug - 70D6703169 IPFE703169 IPFE703169 IPFEO-Ring, Valve Plug617348364D48364D48364 DBack-up-Ring, Valve Plug617446444 FBB49300 SSD44643 NABPlug, Valve [02/06]618549465 BBCP R49299 SSD49249 NABM anifold, Discharge (See Tech Bulletin 109)118889981S89981S89981 SScrew, HSH (M12x70)8 EXPLODED VIEWM odelsStandard - 3520, 3520 CStainless Steel - 3521, 3521 CNickel Aluminum Bronze - 3527 July 20113520/CMATL3521/CMATL3527 MATL25044516NY44516NY44516 NYProtector, Shaft w/2 Screws Lockwashers and Washers (Included with pump)125534018 STZP34018 STZP34018 STZPKit, Direct Mount134039S34039S34039 SKit, Direct Mount126092674 STZP R92674 STZP R92674 STZP RMounting, Box Assy (Inclds: 34018)1275990013 STL990013 STL990013 STLHub B 35mm w/Keyway (See Tech Bulletin 003)127880540ZP80540ZP80540 ZPScrew, HH (M12x100) (Rail Adjusting Screw)127930278 STZP30278 STZP30278 STZPO iler (1 oz.)