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0.9. Mechanical Efficiency @ 800 RPM.................................................. 0.8. PULLEY INFORMATION HORSEPOWER INFORMATION Pulley selection and pump speed are based on a 1725 We recommend that a 1.1 service factor be specified RPM motor and "B" section belts. When selecting when s electing an electric motor as the power source. desired GPM, allow for a ±5% tolerance on pumps To compute specific pump horsepower requirements, output due to variations in pulleys, belts and motors use the following formula: among manufacturers. 1. Select GPM required, then select appropriate HP = (GPM X PSI) / 1440 motor and pump pulley from the same line. 2. The desired pressure is achieved by selecting the correct nozzle size that corresponds with the pump GPM. LP255 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS PUMP PULLEY MOTOR PULLEY RPM GPM 1000 PSI 1500 PSI 2000 PSI 2200 PSI 12.75" 3.95" 500 13 9.3 13.9 18.6 20.4 12.75" 4.35" 640 16.6 11.9 17.8 23.7 26.1 12.75" 4.95" 750 19.5 13.9 20.9 27.9 30.6 12.75" 5.35" 805 20.9 14.9 22.4 29.9 32.8 12.75" 5.75" 865 22.5 16.1 24.1 32.1 35.4 12.75" 6.15" 920 23.9 17.1 25.6 34.1 37.6 12.75" 6.50" 1000 26 18.6 27.9 37.1 40.9 *Intermittent duty only! - Consult factory! Exploded View - LP122A Series/LP123/LP255 LP122A SERIES/LP123/LP255 PARTS LIST A = LP122. B = LP12. C = LP122-400. D = LP122A-310. E = LP25. ITEM PART NO. DESCRIPTION QTY. 1 07759 Crankcase 1 2 13000 Oil Filler Plug 1 4 06085 Crankcase Cover 1 5 07104 O-Ring 1 6 07186 Oil Sight Glass W/Gasket 1 8 06086 Oil Dipstick 1 9 01009 O-Ring 1 10 01010 Screw, (A, B, C, E) 4 10 08093 Screw, (D) 4 11 01011 Spring Washer, (A, B, C) 5 11 08094 Spring Washer, (D) 5 12 07109 Oil Drain Plug, (A, B, C, E) 1 12 12137 Oil Drain Plug, (D) 1 13 07110 Gasket, (A, C) 1 13 07182 Gasket, (B, D, E) 1 14 07111 Bearing Cover 2 15 07112 Crankshaft Seal 2 16 07113 O-Ring 2 17 07114 Hex Screw, (A, B, C, E) 8 17 08095 HexScrew, (D) 8 20 07116 Taper Roller Bearing 2 20A 07117 Fitting Disc, 0.1mm 2 20B 13001 Fitting Disc, 0.15mm 3 21 07118 Shaft Protector 1 22 13242 Crankshaft 1 23 13243 Key 1 24 13340 Connecting Rod Assy. 3 24A 13277 Hex Screw 6 24B 13278 Spring Washer 6 25 13341 Crosshead Plunger Base Assy. 3 28 13232 Crosshead Pin 3 29A 07735 Centering Sleeve 3 29B 07736 Plunger Pipe (A-D) 3 29B 13022 Plunger Pipe (E) 3 29C 07737 Plunger Bolt, (A, B, C, E) 3 29C 07737-0100 Plunger Bolt, (D) 3 29D 07755 Copper Gasket, (A, B, C, E) 3 29D 07761-0100 Gasket for Bolt, (D) 3 29E 06087 Spacer Pipe, (A, B, C, E) 3 29E 06618 Spacer Pipe, (D) 3 30 07789 Flinger (A, B, C, D) 3 30 07779 Flinger (E) 3 31 06120 Seal Retainer, Complete, (A, C) 3 31A 06118 Oil Seal, (A, C) 3 31B 07133 Radial Shaft Seal, (B, D, E) 3 32 06116 Oil Seal Retainer, (A, C) 3 32A 06119 O-Ring, (A, C) 3 33 06117 Backup Seal, (A, C) 3 35 13342 Seal Sleeve, (A, B, C) 3 35 13342-0100 Seal Sleeve, (D) 3 35 06699 Seal Sleeve (E) 3 35A 07740 O-Ring, (A, B, C, E) 3 35A 06619 O-Ring, (D) 3 ITEM 35B 36 36 36A 36A 36A 37 39 39 39 40 40 41 41 41 42 42A 43 43 43 43 43 44 44 44A 44A 45 45 46 46A 46A 47 48 48 48 48A 48A 49 49A 49B 50 50 50A 50A 52 53 54 54 54 55 55 55 PART NO. 13141 13415 13025 13416 13416-0100 06700 06701 07744 07744-0100 13026 07745 13027 07746 06621-0100 06702 06589 07204-0100 13343 06625 13343-4000 13343-3000 06703 07748 07748-0100 07150 06620 07749 07749-0100 07750 07751 07751-0100 07752 07753 06504 06089 12055 06577 07157 07158 07159 07423 07423-0100 07161 07755-0100 13020 06607 07756 06626 13321-0100 07757 06627 13322-0100 DESCRIPTION QTY. O-Ring (E only) 3 V-Sleeve, Weep (A-D) 3 V-Sleeve, Weep (E) 3 Pressure Ring, Weep, (A, B, C) 3 Pressure Ring, (D) 3 Pressure Ring (E) 3 Support Disc (E only) 3 Pressure Ring, (A, B, C) 3 Pressure Ring, (D) 3 Pressure Ring (E) 6 V-Sleeve (A, B, C, D) 6 V-Sleeve (E) 6 Support Ring, (A, B, C) 3 Support Ring, (D) 3 Support Ring (E) 3 Plug, (D only) 3 Steel Ring, (D only) 3 Valve Casing, (A) 1 Valve Casing, (B) 1 Valve Casing, (C) 1 Valve Casing, (D) 1 Valve Casing, (E) 1 Valve Seat, (A, B, C, E) 6 Valve Seat, (D) 6 O-Ring, (A, B, C, E) 6 O-Ring, (D) 6 Valve Plate, (A, B, C, E) 6 Valve Plate, (D) 6 Valve Spring 6 Valve Assy. Complete, (A, B, C, E) (#44, 44A, 45, 46, & 47) 6 Valve Assmebly Complete (D) (#44, 44A, 45, 46, & 47) 6 Spring Retainer 6 Plug, (A) 6 Plug, (B, E) 6 Plug, (C, D) 6 O-Ring, (A, B, C, E) 6 O-Ring, (D) 6 Stud Bolt 8 Nut 8 Washer 8 Plug, (A,B, E) 1 Plug, (C, D) 1 Gasket, (A, B,C, E) 1 Gasket, (D) 1 Disk for Crankshaft 1 Hexagon Screw 1 Plug 1" NPT, (A, C) 1 Plug 1" NPT, (B, E) 1 Plug 1" BSP, (D) 1 Plug 1-1/2" NPT, (A, C) 1 Plug, 1-1/4" NPT, (B, E) 1 Plug, 1" BSP, (D) 1 NOTE: For LP122 pumps manufactured prior ...

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