Interpump PUMP WK531 R

WK531 TECHNICAL INFORMATION Flow (L/min) 30 Flow (US Gpm) 7,9 Rotation regime (rpm) 1450 Pressure (MPa) 50 Pressure (bar) 500 Pressure (psi) 7250 Power (hp) 39 Power (kW) 28,7 Overall dimensions L x l x h (mm) 395x340,5x258 Weight (kg) 39 WK531 3/21/2026 Page 1 - 26 Copyright INTERPUMP GROUP S.P.A WK531 Documents Male shaft (key) - GAS Male shaft (key) - NPT Male shaft (key) + flange A - GAS Hollow shaft (spline) + SAE B flange - GAS Hollow shaft (spline) + SAE B flange - NPT Male shaft (key) - GAS - ATEX WK531 3/21/2026 Page 2 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - GAS WK531 3/21/2026 Page 3 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - GAS Pos. Code Description Qty Notes KIT2409 34240901 1 KIT2408 34240801 1 KIT2256 34225601 1 KIT2158 34215801 KIT 2158*CONROD BUSHINGS 1 +0,50 KIT2157 34215701 KIT 2157*CONROD BUSHINGS 1 +0,25 KIT2156 34215601 KIT 2156*CONROD BUSHING 1 KIT2031 34203101 1 78 99426600 VITE TE M12X25-UNI5739 ZINC. 1 77 71223074 STAFFA DI SOLLEVAMENTO 1 76 90386600 2 74 99192500 SCREW M06X35 5931 A2-70 6 73 90352800 O-RING D. 29.00x1.50 NBR 70SH 3 72 70050266 PISTON GUIDE ROD 3 71 36210151 1 68 36714401 1 67 36712101 INTAKE/DELIVERY VALVE 1 66 36204966 1 65 90515500 1 64 90385600 1 63 36205066 1 62 94739700 1 61 36213805 1 60 90385800 1 59 90516500 ANTI-EXTR.RING D.24.7x29x1.5 2 58 70224266 1 57 90384100 O-RING 17,12X2,62 (3068) 1 56 36200366 VALVE SEAT 1 55 36203266 SPHERICAL VALVE 1 54 94737600 SPRING D. 9,4X14,8 1 53 36202551 VALVE CAGE 1 52 70224366 1 50 90517750 1 49 98197200 PLUG G1/8X8 S.S. 1 48 90357600 1 47 99382800 4 46 70125636 1 45 99485000 SCREW M14X40 UNI5931 12.9 4 DACR. WK531 3/21/2026 Page 4 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - GAS Pos. Code Description Qty Notes 44 70224036 1 43 70100651 3 42 90266100 3 41 90266000 3 40 70227766 3 39 90266200 3 38 70082366 3 37 90362600 O-RING D. 50,52X1,78 (2200) 3 36 70222551 CRANKCASE PLUG 6 35 71225951 PLUG CAP 3 34 70030501 CONNECTING ROD COMPLETE 3 33 70606801 PISTON GUIDE ASSY 3 32 90922200 UPPER HALF CONROD BUSHING 3 +0.5 (BIG END) S.70 32 90922100 UPPER HALF CONROD BUSHING 3 +0.25 (BIG END) S.70 32 90922300 LOWER HALF CONROD BUSHING 3 (BIG END) S.70 31 90922500 LOWER HALF CONROD BUSHING 3 +0.50 (BIG END) S.70 31 90922400 LOWER HALF CONROD BUSHING 3 +0.25 (BIG END) S.70 31 90922000 UPPER HALF CONROD BUSHING 3 (BIG END) S.70 30 90910000 CONROD BUSHING (SMALL END) 3 S.70 29 97742000 GUDGEON PIN D.18X36 3 28 70050115 PISTON GUIDE T.N. 3 27 70224136 PISTON BOLT 3 26 90358400 O-RING D.10,82X1,78(2043)90SH 3 25 70041809 3 24 96709900 WASHER D.10X45 3 23 90167700 OIL SEAL D.36X47X7 3 22 90166800 OIL SEAL D.35X52X7 1 21 70150022 BEARING COVER (PTO SIDE) 1 20 91490000 KEY 8h9X7X70 UNI 6604/A 1 19 70020635 CRANKSHAFT C.26 1 18 99312300 CONN.ROD BOLT M8X1X42 6 17 98200500 PLUG D. 15 5 16 90394200 OR D.190.17X2.62 NBR 70SH 1 WK531 3/21/2026 Page 5 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - GAS Pos. Code Description Qty Notes 15 70160622 CRANKCASE COVER KT 1 14 90360400 O-RING 25,12X1,78 (2100) 1 13 72210695 DIP STICK TUBE 1 12 98211500 OIL DIPSTICK D.21,5X70 1 11 98210050 PLUG G3/8x13 TE22 1 10 90383300 O-RING 13,95X2,62 (3056) 1 9 99185400 SCREW M6X16 UNI 5931 8.8 Z. 20 8 70150122 BEARING COVER (OIL GLASS 1 SIDE) 7 90387700 O-RING 39,34X2,62 (3156) 1 6 70211801 OIL SIGHT GLASS 1 5 90075600 CIRCLIP D.45 (ZJ45) 1 4 70220381 SHIM 0.25 MM. 1 4 70220081 SHIM 0.1 MM. 1 3 90391500 O-RING D. 80.6X2.62 (3318) 2 2 91847700 TAPER ROLLER BEARING 2 33207/Q 1 70010022 CRANKCASE 1 WK531 3/21/2026 Page 6 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - NPT WK531 3/21/2026 Page 7 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - NPT Pos. Code Description Qty Notes KIT2409 34240901 1 KIT2408 34240801 1 KIT2256 34225601 1 KIT2158 34215801 KIT 2158*CONROD BUSHINGS 1 +0,50 KIT2157 34215701 KIT 2157*CONROD BUSHINGS 1 +0,25 KIT2156 34215601 KIT 2156*CONROD BUSHING 1 KIT2031 34203101 1 78 99426600 VITE TE M12X25-UNI5739 ZINC. 1 77 71223074 STAFFA DI SOLLEVAMENTO 1 76 90386600 2 74 99192500 SCREW M06X35 5931 A2-70 6 73 90352800 O-RING D. 29.00x1.50 NBR 70SH 3 72 70050266 PISTON GUIDE ROD 3 71 36210151 1 68 36714401 1 67 36712101 INTAKE/DELIVERY VALVE 1 66 36204966 1 65 90515500 1 64 90385600 1 63 36205066 1 62 94739700 1 61 36213805 1 60 90385800 1 59 90516500 ANTI-EXTR.RING D.24.7x29x1.5 2 58 70224266 1 57 90384100 O-RING 17,12X2,62 (3068) 1 56 36200366 VALVE SEAT 1 55 36203266 SPHERICAL VALVE 1 54 94737600 SPRING D. 9,4X14,8 1 53 36202551 VALVE CAGE 1 52 70224366 1 50 90517750 1 49 98197200 PLUG G1/8X8 S.S. 1 48 90357600 1 47 99382800 4 46 70125936 1 45 99485000 SCREW M14X40 UNI5931 12.9 4 DACR. WK531 3/21/2026 Page 8 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - NPT Pos. Code Description Qty Notes 44 70224036 1 43 70100651 3 42 90266100 3 41 90266000 3 40 70227766 3 39 90266200 3 38 70082366 3 37 90362600 O-RING D. 50,52X1,78 (2200) 3 36 70222551 CRANKCASE PLUG 6 35 71225951 PLUG CAP 3 34 70030501 CONNECTING ROD COMPLETE 3 33 70606801 PISTON GUIDE ASSY 3 32 90922200 UPPER HALF CONROD BUSHING 3 +0.5 (BIG END) S.70 32 90922100 UPPER HALF CONROD BUSHING 3 +0.25 (BIG END) S.70 32 90922300 LOWER HALF CONROD BUSHING 3 (BIG END) S.70 31 90922500 LOWER HALF CONROD BUSHING 3 +0.50 (BIG END) S.70 31 90922400 LOWER HALF CONROD BUSHING 3 +0.25 (BIG END) S.70 31 90922000 UPPER HALF CONROD BUSHING 3 (BIG END) S.70 30 90910000 CONROD BUSHING (SMALL END) 3 S.70 29 97742000 GUDGEON PIN D.18X36 3 28 70050115 PISTON GUIDE T.N. 3 27 70224136 PISTON BOLT 3 26 90358400 O-RING D.10,82X1,78(2043)90SH 3 25 70041809 3 24 96709900 WASHER D.10X45 3 23 90167700 OIL SEAL D.36X47X7 3 22 90166800 OIL SEAL D.35X52X7 1 21 70150022 BEARING COVER (PTO SIDE) 1 20 91490000 KEY 8h9X7X70 UNI 6604/A 1 19 70020635 CRANKSHAFT C.26 1 18 99312300 CONN.ROD BOLT M8X1X42 6 17 98200500 PLUG D. 15 5 16 90394200 OR D.190.17X2.62 NBR 70SH 1 WK531 3/21/2026 Page 9 - 26 Copyright INTERPUMP GROUP S.P.A Illustration Male shaft (key) - NPT Pos. Code Description Qty Notes 15 70160622 CRANKCASE COVER KT 1 14 90360400 O-RING 25,12X1,78 (2100) 1 13 72210695 DIP STICK…