Danfoss PAH 10-12.5 Disassembling And Assembling Instructions Download | Manualshive

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Servie guide

PAH, PAHT, PAHT G pumps

PAH 10-12.5, PAHT 10-12.5 and

PAHT G 10-12.5

Disassembling and assembling

hpp.danfoss.com

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Summary of Contents for PAH 10-12.5

Page 1: ...Servie guide PAH PAHT PAHT G pumps PAH 10 12 5 PAHT 10 12 5 and PAHT G 10 12 5 Disassembling and assembling hpp danfoss com ...

Page 2: ...2 Inspection 7 2 1 Port plate and valve plate 7 2 2 Pistons 7 2 3 Cylinder barrel 8 2 4 Housing 8 2 5 Swash plate 8 3 Assembling 9 4 Spare parts list for PAH 10 12 5 PAHT 10 12 5 15 4 1 Exploded view PAH 10 12 5 PAHT 10 12 5 16 5 Spare parts list for PAHT G 10 12 5 17 5 1 Exploded view PAHT G 10 12 5 18 This document covers the instructions for disassembling and assembling the axial piston pumps P...

Page 3: ... the parallel key and unscrew the front cover 1 Tools required for dismantling 3 Dismantle the front cover using a vice 4 Remove the shaft seal using two screw drivers Caution Avoid scratching the sealing surface on the shaft 5 Remove the two small O rings from the flange Remove the seal from the front cover using a screwdriver 6 Unscrew the four screws for the housing ...

Page 4: ... 5 and PAHT G 10 12 5 4 180R9095 521B0986 0 DKCFN PI 010 NA4 02 06 2017 7 Remove the housing 8 Remove the cylinder barrel 10 Remove the retainer guide 9 Remove the pistons and the retainer plate from the cylinder barrel 12 Remove the spring 11 Remove the spring guide ...

Page 5: ...s Place one of the screwdrivers in the slot of the valve plate 15 Remove the five O rings and the five back up O rings 16 Remove the port plate from the flange 17 Wash all parts and replace all seals inclusive shaft seal 19 If the pump has failed the reason for the failure must be found and fixed before the repaired pump is re installed 18 Inspect all parts carefully see Inspection and replace any...

Page 6: ...and PAHT G 10 12 5 6 180R9095 521B0986 0 DKCFN PI 010 NA4 02 06 2017 Front cover Flange Plugs Front cover crews Valve plate with sealing Cylinder barrel Housing with swash plate and bearing Retainer guide Retainer plate Spring guide Spring Pistons Shaft seal Port plate ...

Page 7: ...rt plate nor valve plate must show any sign of wear 3 Check that both O rings and back up rings are not broken and do not show severe wear 2 Inspection 2 1 Port plate and valve plate 3 Hold a ruler against the surfaces of the piston shoes to check that the surfaces are even and smooth and without any scratches 1 The play in the ball and socket joint must not exceed 0 1 mm 2 The thickness of the pi...

Page 8: ... Check that the swash plate surface is smooth and without any big scratches depth more than 0 1 mm 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 critical 2 3 Cylinder barrel 2 4 Housing 1 2 2 Unscrew center bolt from the swash plate 1 Mounted swash plate 2 5 ...

Page 9: ...for port flange mounting flange and flushing valve must be lubricated It is important to lubricate ALL parts to be 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 pump Do not reuse disassembled O rings they might be damaged Always use new O rings 3 Ass...

Page 10: ...rt plate in its right position using the pin as guide 3 Mount the O ring on the flange Guide pin 6 Press the valve plate into the cylinder barrel using a piece of plastic 5 Mount the valve plate with seals on the cylinder barrel 8 Mount the cylinder barrel in the flange 7 Check that the gap between the cylinder barrel and the valve plate is 1 5 2 5 mm ...

Page 11: ...95 521B0986 0 DKCFN PI 010 NA4 02 06 2017 10 Mount the spring guide 9 Mount the spring in the centre hole 12 Mount the retainer plate on the retainer guide Ensure that the bended surface points downwards 11 Mount the retainer guide on the spring guide 14 All pistons inserted 13 Insert the pistons ...

Page 12: ...986 0 DKCFN PI 010 NA4 02 06 2017 15 Place pin and place swash plate fittet on guide pin and center hole 17 Tighten to a torque of 10 1 Nm 16 Place the screw in the center hole 19 Press the housing down by hand and insert the screws 18 Mount the pump housing using the pin as guide Alignment hole Guide pin ...

Page 13: ...2017 21 Mount the two O rings in the flange and the O ring on the front cover 20 Tighten the screws to a torque of 22 Nm 23 Mount the washer with the edge pointing upwards 22 Wet the shaft seal with water and mount it in the front cover Ensure that it is pressed to the bottom 25 Fit the hollow bush onto the shaft 24 Mount the spring ...

Page 14: ...B0986 0 DKCFN PI 010 NA4 02 06 2017 26 Wet the shaft seal and slide it over the bush 27 Use the shaft seal tool when pressing the shaft seal downwards 28 Press the shaft seal in position 29 Remove the bush 30 Mount the front cover and align it to the screw holes 31 Tighten the screws to a torque of 7 Nm ...

Page 15: ...X 1 1 Housing AISI 304 PEEK 2 1 Pin AISI 316 X 5 4 Screw AISI 304 X 31 1 Swash plate AISI 431 X X 32 1 Screw AISI 304 X X 33 1 Washer AISI 304 X X 34 1 Pin AISI 316 X X 61 1 Cylinder barrel AISI 431 PEEK X X 62 1 Spring AISI 316Ti X X 63 1 Spring guide PEEK X X 64 1 Retainer ball PEEK X X 65 1 Retainer plate AISI 304 X X 66 5 Piston AISI 431 PEEK X X 67 1 Key AISI 316Ti X 91 1 Port plate AISI 304 ...

Page 16: ...Service guide Disassembling and assembling PAH 10 12 5 PAHT 10 12 5 and PAHT G 10 12 5 16 180R9095 521B0986 0 DKCFN PI 010 NA4 02 06 2017 4 1 Exploded view PAH 10 12 5 PAHT 10 12 5 ...

Page 17: ...2 1 Pin AISI 316 X 5 4 Screw AISI 304 X 31 1 Swash plate AISI 431 X X 32 1 Screw AISI 304 X X 33 1 Washer AISI 304 X X 34 1 Pin AISI 316 X X 61 1 Cylinder barrel AISI 431 PEEK X 62 1 Spring AISI 316Ti X 63 1 Spring guide PEEK X 64 1 Retainer ball PEEK X 65 1 Retainer plate AISI 304 X 66 5 Piston AISI 431 PEEK X 67 1 Key AISI 316Ti X 91 1 Port plate AISI 304 PEEK X 92 1 Valve plate AISI 431 X 93 5 ...

Page 18: ...Service guide Disassembling and assembling PAH 10 12 5 PAHT 10 12 5 and PAHT G 10 12 5 18 180R9095 521B0986 0 DKCFN PI 010 NA4 02 06 2017 5 1 Exploded view PAHT G 10 12 5 ...

Page 19: ...Service guide Disassembling and assembling PAH 10 12 5 PAHT 10 12 5 and PAHT G 10 12 5 19 180R9095 521B0986 0 DKCFN PI 010 NA4 02 06 2017 ...

Page 20: ... Danfoss DCS im 2017 06 180R9095 521B0986 DKCFN PI 010 NA4 02 20 Danfoss A S High Pressure Pumps Nordborgvej 81 DK 6430 Nordborg Denmark ...

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