Danfoss PAH Series User Manual Download

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Service guide

PAH, PAHT, PAHT C, PAHT G pumps

PAH 2-6.3/PAHT 2-6.3/PAHT C 2-6.3

and PAHT G 2-6.3

Disassembling and assembling

HPP.danfoss.com

Summary of Contents for PAH Series

Page 1: ...Service guide PAH PAHT PAHT C PAHT G pumps PAH 2 6 3 PAHT 2 6 3 PAHT C 2 6 3 and PAHT G 2 6 3 Disassembling and assembling HPP danfoss com...

Page 2: ...the pump 3 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 PAHT PAHT C 2 16 5 Spare parts...

Page 3: ...the front cover 1 Tools required for dismantling Caution Avoid scratching the sealing surface on the shaft 3 Dismantle the front cover using a vice 4 Remove the shaft seal using two screw drivers Cau...

Page 4: ...3 4 180R9094 521B0985 DKCFN PI 011 N5 02 09 2015 7 Remove the housing 8 Remove the cylinder barrel 10 1 b Remove the stop 10 1 a Remove the spring 9 Remove the pistons and the retainer plate from the...

Page 5: ...b Remove the spring guide 10 2 c Remove the spring NB The following items concern PAH 2 6 3 PAHT 2 6 3 Paht C 2 6 3 and PAHT G 2 6 3 only NB Items 10 2 a through 10 2 c concern PAH 4 6 3 PAHT 3 2 6 3...

Page 6: ...late from the flange 15 Wash all parts and replace all seals inclusive shaft seal 17 If the pump has failed the reason for the failure must be found and fixed before the repaired pump is re installed...

Page 7: ...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...

Page 8: ...d 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 1 Check that the swash plate surface is smooth and w...

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 requi...

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...

Page 11: ...a Mount the stop 9 1 NB Items 9 1 a through 9 1 c concern PAH 2 PAHT 2 PAHT C 2 and PAHT G 2 only 9 1 b Mount the spring in the centre hole 9 1 c Mount the retainer plate 9 2 NB Items 9 2 a through 9...

Page 12: ...PI 011 N5 02 09 2015 9 2 d Mount the retainer plate on the retainer guide 9 2 c Mount the retainer guide on the spring guide 11 All pistons inserted 10 Insert the pistons 12 Place pin and place swash...

Page 13: ...02 09 2015 14 Tighten to a torque of 10 1 Nm 13 Place the screw in the center hole 16 Press the housing down by hand and insert the screws 15 Mount the pump housing using the pin as guide 18 Mount the...

Page 14: ...2015 20 Mount the washer with the edge pointing upwards 19 Wet the shaft seal with water and mount it in the front cover Ensure that it is pressed to the bottom 22 Fit the hollow bush onto the shaft...

Page 15: ...6 3 PAHT 2 6 3 PAHT C 2 6 3 and PAHT G 2 6 3 15 180R9094 521B0985 DKCFN PI 011 N5 02 09 2015 25 Press the shaft seal in position 26 Remove the bush 27 Mount the front cover and align it to the screw h...

Page 16: ...ess bush x 1 1 Housing AISI 304 PEEK 2 1 Pin AISI 316 x x 5 4 Screw AISI 316 x x 31 1 Swash plate AISI 431 x 32 1 Screw AISI 304 x 33 1 Washer AISI 304 x 34 1 Pin AISI 316 x 61 1 Cylinder barrel AISI...

Page 17: ...1 Pin AISI 316 x 5 4 Screw AISI 316 x 31 1 Swash plate AISI 431 x 32 1 Screw AISI 304 x 33 1 Washer AISI 304 x 34 1 Pin AISI 316 x 61 1 Cylinder barrel AISI 431 PEEK x 62 1 Spring AISI 304 x 63 1 Spr...

Page 18: ...terial 1 Shaft bush torpedo x 1 Press bush x 1 1 Housing AISI 304 PEEK 2 1 Pin AISI 316 x x 5 4 Screw AISI 316 x x 31 1 Swash plate AISI 431 x x x 32 1 Screw AISI 304 x x x 33 1 Washer AISI 304 x x x...

Page 19: ...AISI 304 PEEK 2 1 Pin AISI 316 x 5 4 Screw AISI 316 x 31 1 Swash plate AISI 431 x x x 32 1 Screw AISI 304 x x x 33 1 Washer AISI 304 x x x 34 1 Pin AISI 316 x x x 61 1 Cylinder barrel AISI 431 PEEK x...

Page 20: ...Danfoss DCS im 2015 09 180R9094 521B0985 DKCFN PI 011 N5 02 20 Danfoss A S High Pressure Pumps Nordborgvej 81 DK 6430 Nordborg Denmark...