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Service guide | Disassembling and Assembling, APP 1.5-3.5

© Danfoss | DCS (im) | 2017.08

180R9091| DKCFN.PI.013.EF5.02 | 521B0741| 5

16. Mount flushing valve by pressing it into  

 

the hole.

15. Turn flushing valve upside down. If not  

 

properly assembled, spring will fall out.

18. Replace the O-ring on the port flange and  

 

position the new cylinder barrel on the  

 

port plate.

13. Remove spring from poppet and poppet  

 

guide and remove O-ring from poppet  

 guide.

17.  Position the port plate over the guide pin.

 

IMPORTANT: Make sure that the guide  

 

pin is located in the locating hole in the  

 

port plate

Locating hole

Guide pin

14. Press new spring onto shoulders of 

 

poppet guide and poppet so it is stuck  

 

on both collars. Then mount new O-ring  

 

on poppet guide.

O-ring

Summary of Contents for APP 1.5

Page 1: ...Service guide APP pumps APP 1 5 3 5 Disassembling and assembling hpp danfoss com ...

Page 2: ...mbling the axial piston pump APP 1 5 3 5 Tools needed Shaft seal tool code no 180B4148 Press bush Allen key 5mm 2 Screwdrivers Important It is essential that the pump is serviced in conditions of absolute cleanliness To understand the pump design better please see exploded view on last page WARNING Do not reuse disassembled O ring or shaft seal as they might be damaged Contents Introduction 2 1 Di...

Page 3: ... free using 2 screwdrivers 4 Carefully turn the whole pump over so that the shaft is facing down Support the pump in a suitable hollow base so that the pump is not supported by the shaft 6 Remove the pistons retaining plate retaining ball spring guide and spring from the cylinder barrel 1 Unscrew the 4 mounting screws and remove seal SAE flange Do not yet unscrew the 2 lower screws 3 Unscrew the 2...

Page 4: ...unt the new back up rings on the new valve plate first and then mount the new O rings Wet the O rings and back up rings with clean filtered soap water 9 Gently lever the valve plate assembly free with the aid of a screwdriver 11 Gently press by hand the valve onto the cylinder barrel Mount backup ring first Then mount O ring 7 Remove the cylinder barrel 12 Gently push flushing valve out using the ...

Page 5: ... the O ring on the port flange and position the new cylinder barrel on the port plate 13 Remove spring from poppet and poppet guide and remove O ring from poppet guide 17 Position the port plate over the guide pin IMPORTANT Make sure that the guide pin is located in the locating hole in the port plate Locating hole Guide pin 14 Press new spring onto shoulders of poppet guide and poppet so it is st...

Page 6: ...19 Positionthenewspring newspringguide newretainerguide newretainerplateand new pistons 24 Lubricate the threads on the 4 screws with grease and screw them into the pump and tighten by hand Use Molykote D paste from Dow Corning or Küber UH1 84 201 from Küber Lubrication 23 Replace the O ring on the SAE flange 20 Position the housing on the port flange and over the guide pin 22 Mount the new shaft ...

Page 7: ...s time Tools needed 2 Wet the shaft and shaft seal with clean filtered soap water Gently lever theshaftsealassemblyfreewiththeaidof 2 screwdrivers 3 Fit the hollow bush torpedo to the shaft Wet the torpedo and replacement shaft seal with soap Do not use silicone grease Recessed screws Recessed screws 4 Slide the shaft seal over the torpedo with the carbon seal face pointing upwards Be careful not ...

Page 8: ...he parts with clean filtered soap water before assembly 9 To prevent cold welding lubricate threads on the 4 screws with grease and screw them into the pump and tighten byhand UseMolykote DpastefromDow CorningorKlüberUH184 201fromKlüber lubrication Tighten the 4 flange screws according to exploded view 6 Remove ceramic ring from the flange 8 Position the O ring on the seal SAE flange 5 Using the p...

Page 9: ...Service guide Disassembling and Assembling APP 1 5 3 5 Danfoss DCS im 2017 08 180R9091 DKCFN PI 013 EF5 02 521B0741 9 ...

Page 10: ...Service guide Disassembling and Assembling APP 1 5 3 5 Danfoss DCS im 2017 08 10 180R9091 DKCFN PI 013 EF5 02 521B0741 3 Exploded views 3 1 APP 1 5 2 5 ...

Page 11: ...Service guide Disassembling and Assembling APP 1 5 3 5 Danfoss DCS im 2017 08 180R9091 DKCFN PI 013 EF5 02 521B0741 11 3 2 APP 3 0 3 5 ...

Page 12: ... Danfoss DCS im 2017 08 180R9091 DKCFN PI 013 EF5 02 521B0741 12 Danfoss A S High Pressure Pumps Nordborgvej 81 DK 6430 Nordborg Denmark ...

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