Danfoss PAH 50 Instructions Manual Download

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521B1072

DKCFN.PI.011.NC3.02

09-2013

INSTRUCTIONS

Servicing PAH 50 - 100

Note: If the pump is dismantled during the warranty

period, the pump is no longer under warranty.

Dismantling:

1. Tools required for dismantling the PAH 50 - 100 pump.

2. Remove parallel key and unscrew front screw M6 (10 mm key).

3. Unscrew screws in front flange.

4. Remove front flange.

5. Remove shaft seal using two screwdrivers.

6. Remove guide pin from housing and the two guide pins from

swash plate.

Summary of Contents for PAH 50

Page 1: ...period the pump is no longer under warranty Dismantling 1 Tools required for dismantling the PAH 50 100 pump 2 Remove parallel key and unscrew front screw M6 10 mm key 3 Unscrew screws in front flang...

Page 2: ...e swash plate using the 4 mm front screw 8 Remove cylinder barrel from housing 9 Unscrew the eight screws M8 in port flange 6 mm key 10 Separate housing and port flange 11 Remove valve plate from port...

Page 3: ...17 Remove shaft sealing from front flange 18 The ceramic ring removed from the front flange 19 Wash all parts and replace all seals inclusive shaft seal 20 Inspect all parts carefully see Inspection...

Page 4: ...sher and screw for fixing swash plate Retaining ball Shaft seal Thrust plate with sealings Pistons Retaining plate Cylinder barrel Port flange Key Screws for flanges Ceramic ring Retaining guide Port...

Page 5: ...hat both O rings and back up rings are not broken and do not show severe wear Pistons 1 Play in ball and socket joint must not exceed 0 1 mm 2 Thickness of piston shoes must be at least 4 4 mm 3 Hold...

Page 6: ...1 Check outer bearing surface for large wear grooves not critical 2 Check that bushings are free from seizure and large scratches 3 Ensure that pistons can move freely in bushings Housing 1 Check bea...

Page 7: ...7 521B1072 DKCFN PI 011 NC3 02 Swash plate 1 Check that surface of swash plate is smooth and without any large scratches depth more than 0 1 mm...

Page 8: ...are OK Replace all seals 3 Mount O ring guide and guide pins on port flange 4 Mount valve plate in its right position using pin as guide 5 Mount housing using pin as guide 6 Place housing and port fl...

Page 9: ...t 9 Mount cylinder barrel in housing 10 Slide retaining ball smallest diameter pointing upwards down the shaft 11 Mount retaining plate smallest centre diameter pointing upwards 12 Mount pistons 13 Mo...

Page 10: ...pointing downwards by sliding them over the tool 17 Mount swash plate on front flange using pins as guide 18 Press swash plate against front flange and screw tools together 19 Mount O ring on front fl...

Page 11: ...NC3 02 22 Mount tool over shaft 23 Mount front flange on te housing using pin as guide 24 Remove tool 25 Mount screws eight M8 in front flange 25 Tighten screws to a torque of 30 Nm and mount paralle...

Page 12: ...X X 12 9 Pcs O ring NBR X 13 9 Pcs Back up ring PEEK X 14 1 Pc Thrust plate Stainless steel 1 4057 X 16 1 Pc Retaining ball Stainless steel 1 4057 X X 17 1 Pc Cylinder barrel Stainless steel 1 4057 X...

Page 13: ...13 521B1072 DKCFN PI 011 NC3 02 Exploded view PAH 50 100...