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. PARTS DRAWING (Continued) 803–931 Pump and Unloader Assembly 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 47 52 53 54 55 47 56 57 58 50 49 59 60 61 64 65 63 62 66 86 83 82 84 85 80 81 87 88 67 68 69 91 70 90 89 23 29 26 27 33 34 35 3 2 4 23 22 21 24 25 19 18 17 16 15 14 1 13 11 12 5 10 9 8 7 6 28 79 20 78 77 76 75 74 32 31 30 PARTS LIST (Continued) 803–931 Pump and Unloader Assembly REF PART NO. NO. DESCRIPTION QTY 46 KIT 102 SPRING 47 KIT 102 O–RING 48 KIT 102 BALL 49 KIT 102 RING, Backup 50 KIT 102,94 O–RING 51 KIT 102 PISTON, Control 52 KIT 102 RING, Backup 53 KIT 102 GUIDE, Valve 54 KIT 102 O–RING 55 KIT 102 RING, Backup 56 KIT 102 VALVE 57 KIT 102 SCREW 58 KIT 102 SEAT, Valve 59 KIT 84 CAP, Valve 60 KIT 84 O–RING 61 KIT 1 GUIDE, Valve 62 KIT 1 SPRING 63 KIT 1 PLATE, Valve 64 KIT 1 SEAT, Valve 65 KIT 1 O–RING 66 KIT 1 VALVE ASSEMBLY 67 804–016 MANIFOLD 1 68 KIT 94,102 O–RING 69 803–998 NOZZLE 1 70 804–284 FITTING, Outlet 1 74 804–003 FITTING, Chemical Injector 1 75 KIT 94 O–RING 76 804–002 KNOB, Adjustment, chemical injector 1 77 804–001 NEEDLE 1 78 KIT 94 O–RING 79 KIT 94 SPRING 80 804–027 SCREW, Cap, socket hd. 8 81 803–278 WASHER, Lock 8 82 804–000 SEAT, Valve 1 83 KIT 94 O–RING 84 804–005 BODY CHEMICAL INJECTOR 1 85 KIT 94 O–RING 86 KIT 94 BALL 87 KIT 94 SPRING 88 KIT 94 O–RING 89 802–793 PLUG, Hex Hd. 1 90 801–484 PLUG, Hex Hd. 1 91 KIT 94 O–RING Kit No. Repair KitPart No. Ref No. Description Qty. 1 801–472 61 GUIDE, Valve 6 Valve 62 SPRING 6 63 PLATE, Valve 6 64 SEAT, Valve 6 65 O–RING 6 66 VALVE ASSEMBLY 6 83 804–033 Oil Seal 5 SEAL, Oil 3 84 804–034 Valve Cap 59 60 CAP, Valve O–RING 6 6 94 803–335 50 O–RING 1 Chemical 68 O–RING 1 Injector 75 O–RING 1 78 O–RING 1 79 SPRING 1 83 O–RING 1 85 O–RING 1 86 BALL 1 87 SPRING 1 88 O–RING 1 91 O–RING 1 96 804–036 6 RING, Head 1 Packing &7 PACKING 1 Retainer 8 RETAINER, Packing 1 9 O–RING 1 10 O–RING 1 97 804–037 6 RING, Head 3 Packing 7 PACKING 3 9 O–RING 3 10 O–RING 3 102 804–038 43 BUSHING 1 Unloader 44 O–RING 1 45 STOPPER 1 46 SPRING 1 47 O–RING 3 48 BALL 1 49 RING, Backup3 50 O–RING 2 51 PISTON, Control 1 52 RING, Backup1 53 GUIDE, Valve 1 54 O–RING 1 55 RING, Backup1 56 VALVE 1 57 SCREW 1 58 SEAT, Valve 1 . . PARTS DRAWING 803–911 Pump Assembly, 2300 psi 14 13 12 14 1 3 2 31 33 32 34 36 39 38 54 41 40 43 42 15 16 17 12 18 19 20 21 22 23 24 22 45 21 44 19 18 47 48 10 9 11 52 49 51 50 37 25 26 29 27 28 30 10 9 8 7 6 5 4 11 PARTS LIST 803–911 Pump Assembly, 2300 psi REF PART REF PART NO. NO. DESCRIPTION QTY NO. NO. DESCRIPTION QTY 1 803–913 MANIFOLD 1 27 803–273 SCREW, Cap, socket hd. 5 2 801–651 SCREW, Cap, socket hd. 8 28 801–488 O–RING 1 3 801–652 WASHER, Lock 8 29 802–345 GAUGE, Sight 1 4 KIT 1 O–RING 30 802–793 PLUG, Oil Drain 1 5 KIT 1 SEAT, Valve 31 803–915 CRANKSHAFT 1 6 KIT 1 PLATE, Valve 32 803–275 PIN, Wrist 3 7 KIT 1 SPRING 33 803–976 KEY 1 8 KIT 1 GUIDE, Valve 34 803–276 ROD, Connecting 3 9 KIT 4 O–RING 36 803–977 WASHER, Lock 6 10 KIT 4 CAP 37 803–279 SCREW, Cap, socket hd. 6 11 KIT 1 VALVE ASSEMBLY 38 803–917 GUIDE, Piston 3 12 KIT 88,92 PACKING 39 803–922 WASHER, Flinger 3 13 KIT 92 RETAINER, Packing 40 803–916 PLUNGER, Ceramic 3 14 KIT 92 RING, Head 41 803–919 RING, Backup 3 15 KIT 92 RETAINER, Packing 42 803–921 WASHER 3 16 KIT 92 O–RING 43 803–920 NUT, Piston 3 17 KIT 23 SEAL, Oil 44 803–281 SPACER 1 18 803–265 SCREW, Cap, hex hd. 8 45 803–282 SEAL, Crankshaft 1 19 803–266 COVER, Crankcase 2 47 802–317 WASHER, Lock 2 20 803–267 SPACER 1 48 802–318 SCREW, Cap, socket hd. 2 21 803–268 O–RING 2 49 801–484 PLUG, Hex 1 22 803–269 BEARING, Ball 2 50 801–482 PLUG, Hex 1 23 803–326 CRANKCASE 1 51 801–483 WASHER, Flat 1 24 801–659 DIPSTICK 1 52 801–485 WASHER, Flat 1 25 803–327 GASKET, Cover 1 53 KIT 88,92 PACKING 26 802–526 COVER, Crankcase 1 54 803–918 O–RING 1 Kit No. Repair KitPart No. Ref No. Description Qty. 1 801–472 Valve 4 5 6 7 8 11 O–RING SEAT, Valve PLATE, Valve SPRING GUIDE, Valve VALVE ASSY. 6 6 6 6 6 6 4 802–306 Valve Cap 9 10 O–RING CAP 6 6 23 801–658 Oil Seal 17 SEAL, Oil 6 88 803–923 Packing 12 53 PACKING PACKING 6 3 92 803–924 Packing & Retainer 12 13 14 15 16 53 PACKING RETAINER, PackingRING, Head RETAINER, PackingO–RING PACKING 2 1 2 1 1 1 . . PUMP SERVICE PUMP SERVICE WARNING To reduce the risk of serious bodily injury , including fluid injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the Pressure Relief Procedure Warning before proceeding. NOTE: The following metric wrenches are needed: M10, M13 and M30. Repair kits are available. Refer to the individual repair sections and the pump parts page for more details. For the best results, use all parts in the kits. NOTE: There are two dif ferent tool kits to aid in servicing the pump. P/N 800–298 is used to ease installation of packings. P/N 800–271 includes the items in 800–298 and tools to aid in the removal of packing retainers. Valves NOTE: For a set of six valves, order P/N 801–472. 1. Remove the hex plug from the manifo...

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