Danfoss PAHT Series Page 1 Instruction Download

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Instruction

Disassembling and assembling

PAHT and PAHT G 256-308

Summary of Contents for PAHT Series

Page 1: ...danfoss high pressurepumps com Instruction Disassembling and assembling PAHT and PAHT G 256 308...

Page 2: ...stable surface above the ground Ensure that the pump cannot roll It must be possible to place the pump vertically with the shaft pointing downwards This can be done between two pallets or between two...

Page 3: ...ump from the rest of the system 4 Mount the M8 allen screw from the tool set in the top of the shaft 5 Wet the shaft and shaft seal with clean filtered water 3 Remove ceramic ring from flange by gentl...

Page 4: ...ye bolt in the M8 hole in the middle of the flange Pull it straight upwards 8 Using a 13 mm combination wrench remove all the bolts on the mounting flange except the three shown in the next picture WA...

Page 5: ...rel is dropped or lowered too fast into housing the main bearing shaft bearing might be damaged It is not replaceable 17 Remove the port plate by hand 16 Place cylinder barrel upside down For further...

Page 6: ...he shaft pointing downwards This can be done between two pallets or between two boards on a pallet provided that the distance is minimum 50 mm 1 Lubrication To prevent seizing up lubricate all threads...

Page 7: ...ew M8 eye bolt Place the four springs and spring guide in cylinder barrel Springs must be positioned in the holes 9 Make sure there is enough free space for the shaft beneath the housing Gently lower...

Page 8: ...ounting flange see page 10 for assembly of swash plate 15 Lubricate piston shoes and swash plate with clean filtered water Remember to place the pins in housing 11 Retainer guide retainer ball and ret...

Page 9: ...Press new ceramic ring into retainer ring by using plastic tool provided WARNING Ensure that the face with rubber seal is positioned against shoulder in shaft seal flange 20 Use plastic assembly tool...

Page 10: ...he O ring and pin are in good condition Provided with sealing set 4 Mount the swash plate on the 2 pins Carefully by hand tilt the unit to horizontal position and mount the 2 bolts which hold the swas...

Page 11: ...bush again by screwing the nut counter clockwise Turn the nut slowly clockwise The valve plate must slide gently into the cylinder barrel Stop when the gap between cylinder barrel and valve plate is...

Page 12: ...Disconnect the pump from the rest of the system WARNING Never unscrew the 4 screws marked with coloured sealer 2 Loosen all screws on the pump except the three screws as shown in the picture above Not...

Page 13: ...move forward loosen the drain plug to empty the pump from water by releasing vacuum 8 Adjust the retainer plate to be parallel to the end flange 7 Carefully turn the flange and push it backwards to ma...

Page 14: ...ure 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 12 Remove the retainer ring by sli...

Page 15: ...sert the pistons randomly 1 Carefully push the retainer ring in place 4 Place the retainer ring in an odd angle corresponding to the orientation of the swash plate 3 Remove the stop for retainer ball...

Page 16: ...80R9268 521B1236 DKCFN PI 011 B3 02 01 2015 8 Remove the guide bolt Mount the three screws Tighten them to a torque of 30 Nm 3 Nm Connect the pump to the rest of the system 7 Mount the three screws as...

Page 17: ...hin the next 1 000 hours 2 Cavitation of the piston shoes New inspection is required in 2 000 hours 7 When should the pistons be replaced This section provides guidance on how to determine whether the...

Page 18: ...sh plate Super Duplex x x 34 2 Pin 10 5 x 20 Duplex x x x 61 1 Cylinder barrel Super duplex PEEK x 62 4 Spring Duplex x 63 1 Spring guide Polypropylen x 64 1 Retainer Ball Super duplex x 65 1 Retainer...

Page 19: ...1 Swash plate Super Duplex x x 34 2 Pin 10 5 x 20 Duplex x x x 61 1 Cylinder barrel Super duplex PEEK x 62 4 Spring Duplex x 63 1 Spring guide Polypropylen x 64 1 Retainer Ball Super duplex x 65 1 Ret...

Page 20: ...Instruction Disassembling and assembling PAHT and PAHT G 256 308 20 180R9268 521B1236 DKCFN PI 011 B3 02 01 2015 Danfoss A S High Pressure Pumps DK 6430 Nordborg Denmark...