Danfoss PAH 50 Service Manual Download

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Service guide | Disassembling and assembling PAH 50-100

180R9098 | 521B1072 | DKCFN.PI.011.NC5.02 | 06.2017

7. Remove the swash plate using the front

screw.

8. Remove the cylinder barrel from the

housing.

10. Separate the housing and the end cover.

9. Unscrew the six screws in the end cover.

12. Remove the guide pins and the guide.

11. Remove the valve plate from the end cover.

Summary of Contents for PAH 50

Page 1: ...Service guide PAH pumps PAH 50 100 Disassembling and assembling hpp danfoss com...

Page 2: ...overed by the warranty Introduction Table of Contents 1 Disassembling the pump 3 2 Inspection 7 2 1 Port plate and thrust plate 7 2 2 Pistons 7 2 3 Cylinder barrel 8 2 4 Housing 8 2 5 Swash plate 8 3...

Page 3: ...the parallel key and unscrew the front cover 1 Tools required for dismantling 3 Unscrew the screws in the front flange 4 Remove the front flange 4 Remove the shaft seal using two screw drivers Cautio...

Page 4: ...I 011 NC5 02 06 2017 7 Remove the swash plate using the front screw 8 Remove the cylinder barrel from the housing 10 Separate the housing and the end cover 9 Unscrew the six screws in the end cover 12...

Page 5: ...521B1072 DKCFN PI 011 NC5 02 06 2017 14 Remove the retaining plate 13 Remove the pistons 15 Remove the retaining ball 16 Remove the the thrust plate using two screwdrivers 18 The ceramic ring removed...

Page 6: ...lure must be found and fixed before the repaired pump is re installed 20 Inspect all parts carefully see Inspection and replace any worn parts Front Flange Housing with bearing Port flange Screws for...

Page 7: ...that both O rings and back up rings are not broken and do not show severe wear 2 Inspection 2 1 Port plate and thrust plate 3 Hold a ruler against the surfaces of the piston shoes to check that the s...

Page 8: ...critical 2 Check that the bushings are free from seizure and large scratches 3 Ensure that the pistons can move freely in the bushings 1 Check the outer bearing surface for large wear grooves not cri...

Page 9: ...assembled with clean filtered water Especially all PEEK parts 2 Parts and tools required for assembly Check that all parts are OK Replace all seals WARNING Do not use silicone when assembling the pum...

Page 10: ...6 Place housing and port flange near table edge and mount screws from below 8 Press the thrust plate into the cylinder barrel using a table or the like as support 10 Slide the retaining ball smallest...

Page 11: ...ntre diameter pointing upwards 14 Mount the ceramic ring by pressing the tool as far down in the front flange as possible 16 Mount the shaft seal carbon surface pointing downwards the spring and the w...

Page 12: ...against the flange and screw the tools together 20 Mount the washer and the screw in the front flange to fix the swash plate 22 Mount the tool over the shaft 19 Mount the O ring on the front flange 21...

Page 13: ...0R9098 521B1072 DKCFN PI 011 NC5 02 06 2017 23 Mount the front flange on the housing using the pin as guide 24 Remove the tool Guide pin 26 Tighten the screws to a torque of 30 Nm and mount the parall...

Page 14: ...ng AISI 304 2 2 Pcs Pin AISI 304 X 3 2 Pcs Plug AISI 304 4 2 Pcs O ring NBR X 31 1 PC Swash plate Stainless steel 1 4057 X X X X X 34 2 PC Pin AISI 304 X 61 1 PC Cylinder barrel Stainless steel 1 4057...

Page 15: ...Service guide Disassembling and assembling PAH 50 100 15 180R9098 521B1072 DKCFN PI 011 NC5 02 06 2017 5 Exploded view PAH 50 100...

Page 16: ...Danfoss DCS im 2017 06 180R9098 521B1072 DKCFN PI 011 NC5 02 16 Danfoss A S High Pressure Pumps Nordborgvej 81 DK 6430 Nordborg Denmark...