Danfoss APP S 2.0 User Manual Download

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Instruction

APP S / APP S 674 pumps

APP S 2.0-3.5 / APP S 674 2.0-3.5 pumps

Disassembling and assembling

Summary of Contents for APP S 2.0

Page 1: ...ro solutions com Instruction APP S APP S 674 pumps APP S 2 0 3 5 APP S 674 2 0 3 5 pumps Disassembling and assembling...

Page 2: ...674 2 0 3 5 23 10 When should the pistons be replaced 24 This document covers the instructions for disassembling and assembling the axial piston pumps APP S 2 0 3 5 APP S 674 2 0 3 5 pumps Important...

Page 3: ...2 Using a 6 mm allen key unscrew the 3 bolts from shaft seal cover 1 Disconnect the pump from the rest of the system 3 Remove shaft seal bushing 4 Remove O ring with a small screwdriver 5 Remove cera...

Page 4: ...d to pull the shaft seal up WARNING Be careful not to scratch the shaft 8 Carefully remove the shaft seal and distance ring 10 Using a 8 mm allen key unscrew all bolts on the end flange 9 Carefully re...

Page 5: ...ve 2 pistons Be careful not to scratch the pistons WARNING Do not use any tools 13 Swash plate must be placed so that its surface is not scratched For further disassembling of swash plate see page 14...

Page 6: ...aft seal is removed WARNING If the cylinder barrel is dropped or lowered too fast into housing the main bearing shaft bearing might be damaged 21 Remove the port plate in the housing by hand 20 Place...

Page 7: ...lushing valve must be lubricated It is important to lubricate ALL parts to be assembled with clean filtered water Especially all PEEK parts WARNING Do not use silicone when assembling the pump Do not...

Page 8: ...lubricate with water 4 Position port flange by aligning pin hole over guide pin 6 Lubricate the threads with PTFE lubrication Insert screws on the port flange Tighten screws to a torque of 30 3 Nm 5 C...

Page 9: ...using the guide pin Do not use force for this operation 10 Place the pump on a distance block Make sure there is enough free space for the shaft beneath the housing Lubricate inside 11 Carefully lower...

Page 10: ...pistons in the retainer plate and cylinder barrel 19 Change and lubricate O ring in the end flange Position end flange aligning pin hole over the guide pin 16 Ensure the retainer plate is oriented co...

Page 11: ...traight downwards as possible Be careful not to squeeze the O ring 21 Screw in the rest of the bolts and tighten all screws to a torque of 30 3 Nm 24 Position the shaft seal distance ring 23 Remove ol...

Page 12: ...e turn the seal clockwise until spring stops at distance ring 25 Lubricate shaft with clean filtered water 27 Right position of the spring can be inspected through the flushing valve hole Shaft seal m...

Page 13: ...swash plate guide pin and O ring 4 Lubricate centre bolt thread with a PTFE lubricant type 3 Place guide pin and carefully align swash plate over guide pins 6 Finally check the surface on the swash pl...

Page 14: ...backup rings on valve plate 4 Lubricate the new O rings back up rings and the liners in the cylinder barrel with clean filtred water 3 Mount the new back up rings on the valve plate Then mount the O...

Page 15: ...onto shoulders of the poppet guide and the poppet The spring must be fastened on both collars Then mount new O ring on the poppet guide Turn flushing valve upside down If spring is not properly assem...

Page 16: ...sconnect the pump from the rest of the system or close inlet valve 2 Loosen all screws on the pump except the two screws as shown in the picture below Note There is still water inside the pump 4 Remov...

Page 17: ...C4 02 10 2015 6 WARNING Ensure that the piston shoes and the piston surfaces are not damaged during removal It is recommended to place the pistons upside down on an even and clean base surface 7 Remo...

Page 18: ...ce the spring 1 Ensure the liner and the end of cylinder barrel are wetted 4 Place the ball on the retainer plate WARNING Ensure right assembling and placement of the retainer plate See item 16 page 1...

Page 19: ...013 C4 02 10 2015 7 Replace the O ring and mount the flange Ensure the guide pin is mounted 8 Mount two screws as shown below and tighten them 10 Connect the pump to the rest of the system 11 Bleed th...

Page 20: ...1 62 1 Spring Hastelloy C4 x 63 1 Spring guide PEEK x 64 1 Retainer ball Super Duplex x1 65 1 Retainer plate Super Duplex x1 66 7 Piston Super Duplex PEEK x1 67 1 Key AISI 316 x 91 1 Port plate Super...

Page 21: ...Instruction Disassembling and assembling APP S 2 0 3 5 APP S 674 2 0 3 5 21 180R9281 521B1275 DKCFN PI 013 C4 02 10 2015 8 1 Explode view APP S 2 0 3 5...

Page 22: ...PEEK x 64 1 Retainer ball Super Duplex x1 65 1 Retainer plate Super Duplex x1 66 7 Piston Super Duplex PEEK x1 67 1 Key AISI 316 x 91 1 Port plate Super Duplex PEEK x 92 1 Valve plate Super Duplex x1...

Page 23: ...Instruction Disassembling and assembling APP S 2 0 3 5 APP S 674 2 0 3 5 23 180R9281 521B1275 DKCFN PI 013 C4 02 10 2015 9 1 Explode view APP S 674 2 0 3 5...

Page 24: ...next 500 1 000 hours Picture 3 Cavitation of the piston shoes All pistons must be replaced within the next 100 200 hours This section provides guidance on how to determine whether the parts of the pum...

Page 25: ...Instruction Disassembling and assembling APP S 2 0 3 5 APP S 674 2 0 3 5 25 180R9281 521B1275 DKCFN PI 013 C4 02 10 2015...

Page 26: ...Danfoss DCS im 2015 10 180R9281 521B1275 DKCFN PI 013 C4 02 Danfoss A S High Pressure Pumps DK 6430 Nordborg Denmark...