Lenntech Danfoss PAHF Series Service Manual Download

Page: 1 / 14

521B1121

DKCFN.PI.011.D1.02

11-2009

INSTRUCTION

Servicing PAHF 20-40

180R9180

DISASSEMBLY

Tools required for dismantling PAHF 20-40

Loosen and remove 6 screws

Remove mounting fl ange

4. Remove

O-ring

Remove 2 guide pins

Remove shaft sealing

7. Remove

spring

NOTE:

Disassembly of the pump within the warranty period

will void the warranty.

Lenntech

[email protected] Tel. +31-152-610-900
www.lenntech.com Fax. +31-152-616-289

Lenntech

Summary of Contents for Danfoss PAHF Series

Page 1: ...emove 6 screws 3 Remove mounting flange 4 Remove O ring 5 Remove 2 guide pins 6 Remove shaft sealing 7 Remove spring NOTE Disassembly of the pump within the warranty period will void the warranty Lenntech info lenntech com Tel 31 152 610 900 www lenntech com Fax 31 152 616 289 info lenntech com Tel 31 152 610 900 www lenntech com Fax 31 152 616 289 Lenntech ...

Page 2: ...1B1121 12 Remove cover 13 Remove pin 14 Remove pistons and retainer plate 15 Remove retainer ball 8 Remove washer for shaft seal 9 Loosen flange 2 screws Don t remove yet 10 Turn pump upside down 11 Loosen and remove 8 screws ...

Page 3: ...3 20 Remove pump housing from rest of the pump 21 Raise pump to vertical position and remove 1 guide pin 22 Remove cylinder barrel 23 Remove valve plate 16 Remove bush 17 Remove spring 18 Place pump horizontally 19 Remove 2 screws ...

Page 4: ...Remove 1 guide pin 25 Remove O ring from port flange 26 Loosen thrust plate from cylinder barrel 27 Remove thrust plate 28 Remove O rings from thrust plate 29 Remove back up rings from thrust plate 30 Remove O ring from end cover plate ...

Page 5: ...521B1121 DKCFN PI 012 D1 02 5 31 Remove shaft sealing from mounting flange 32 33 Pump disassembled ...

Page 6: ...gainst a light source 3 Check that both O rings and back up rings are not broken and do not show severe wear Swash plate 1 Check that surface of swash plate is smooth and without any large scratches depth more than 0 1 mm Bearings 1 Check bearing in swash plate for wear and scratches 2 Check bearing in port flange for wear and scratches Retainer cone 1 Check the retainer cone for scratches ...

Page 7: ...ocket joint must not exceed 0 1 mm 2 Thickness of piston shoes must be at least 4 1 mm 3 Hold a ruler against surfaces of piston shoes to check that the surfaces are even and smooth and without any scratches 4 Check bushes in cylinder barrel for wear and scratches ...

Page 8: ...ing 6 Mount valve plate Be aware of orientation guide pin 7 Mount back up rings on thrust plate 8 Mount O rings on thrust plate ASSEMBLY 1 Tools required for assembly of PAHF 20 40 2 Parts needed for assembly of PAHF 20 40 3 Mount O ring in port flange 4 Mount 1 guide pin in port flange ...

Page 9: ...ylinder barrel and thrust plate 10 Mount thrust plate on cylinder barrel 11 Press thrust plate into cylinder barrel 12 Spray water on valve plate 13 Mount cylinder in flange 14 Mount pump housing 15 Mount 2 x screws in the bottom 16 Tighten with tool ...

Page 10: ...B1121 17 Mount spring 18 Mount bushing 19 Mount retainer ball on top of the spring 20 Spray with water 21 Take out 2 pistons as showed 22 Mount pistons in housing 23 Mount the 2 last pistons 24 Mount 1 guide pin in pump housing ...

Page 11: ... 26 Mount end cover plate in pump housing 27 Mount and cross tighten 3 screws as showed Then mount the last 5 screws 28 Tighten with 30Nm 29 Turn pump around and tighten 2 screws with 10 Nm 30 Mount the 2 guide pins 31 Mount the O ring 32 Place special tool on shaft ...

Page 12: ...washer 34 Mount the spring 35 Mount the shaft seal smallest diameter pointing down 36 Mount shaft seal in flange 37 Press in place with special tool 38 Mount flange on shaft remember to spray with water 39 Mount the 6 screws 40 Tighten with 30 Nm ...

Page 13: ...tainer plate 1 4301 X 66 9 Pcs Piston Stainless steel 1 4057 X 67 1 Pc Key 8x7x32 1 4571 AISI316Ti X 91 1 Pc Valve plate PAHT 20 32 AISI 304 PEEK X 92 1 Pc Thrust plate 1 4057 AISI 431 X 93 9 Pcs Back up ring PTFE X 94 9 Pcs O ring 13 00 x 2 00 NBR X 121 1 Pc Port flange 1 4404 AISI 316 122 1 Pc O ring ø85 x 3 NBR X X 123 1 Pc O ring ø59 5 x 3 NBR X 124 1 Pc Shaft sealing AISI 304 NBR X 125 1 Pc E...

Page 14: ...14 DKCFN PI 012 D1 02 521B1121 EXPLODED VIEW ...

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