Danfoss PAHT 20-32, PAHT G 20-32 Service guide
Service guide
PAHT / PAHT G pumps
PAHT 20-32 / PAHT G 20-32
Disassembling and assembling
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Service guide | Disassembling and assembling PAHT / PAHT G 20-32
Table of Contents
Introduction
1. Disassembling the pump ..................................................................................................................................... 3
2. Inspection .................................................................................................................................................................. 9
2.1. Valve and thrust plate: .......................................................................................................................................... 9
2.2. Swash plate: .............................................................................................................................................................. 9
2.3. Pistons: ......................................................................................................................................................................10
3. Assembling ............................................................................................................................................................. 11
4. Spare parts list for PAHT 20-32 ........................................................................................................................20
5. Exploded view PAHT 20-32 ...............................................................................................................................21
6. Spare parts list for PAHT G 20-32 ....................................................................................................................22
7. Exploded view PAHT G 20-32 ...........................................................................................................................23
8. Tool sets ....................................................................................................................................................................24
NOTE: If the pump is disassembled within the warranty period, the pump is no longer covered
by the warranty.
This document covers the instructions for disassembling and assembling the axial piston pumps
PAHT / PAHT G 20-32.
2
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
Service guide | Disassembling and assembling PAHT / PAHT G 20-32
1. Disassembling the
pump
2. Loosen and remove 6 screws.1. Tools required for dismantling the pump.
4. Remove shaft sealing.
Caution: Avoid scratching the sealing
3. Remove mounting ange.
surface on the shaft.
5. Remove spring. 6. Remove 2 guide pins.
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
3
Service guide | Disassembling and assembling PAHT / PAHT G 20-32
7. Remove O-ring. 8. Turn pump upside down.
9. Loosen and remove 10 screws. 10. Remove cover.
11. View to pistons and retainer plate.
12. Remove pistons and retainer plate.
4
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
Service guide | Disassembling and assembling PAHT / PAHT G 20-32
13. Remove retainer ball. 14. Remove retainer.
15. Remove spring. 16. Remove cylinder barrel.
18. Remove 1 guide pin.17. Remove port plate.
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
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Service guide | Disassembling and assembling PAHT / PAHT G 20-32
19. Turn pump upside down. Loosen and
remove 4 screws. 20. Remove port ange.
21. Remove 1 guide pin.
23. Loosen thrust plate from cylinder barrel.
22. Remove O-ring from port ange.
24. Remove thrust plate.
6
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
Service guide | Disassembling and assembling PAHT / PAHT G 20-32
25. Remove O-rings from thrust plate.
27. Remove 1 guide pin from end cover
plate.
26. Remove backup rings from thrust plate.
28. Loosen and remove screw from swash
plate.
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
30. Remove 2 guide pins from end cover
plate.29. Remove swash plate.
7
Service guide | Disassembling and assembling PAHT / PAHT G 20-32
31. Remove O-ring from end cover plate.
33.
32. Remove shaft sealing from mounting
ange.
34. Pump
disassembled.
8
180R9175| 521B1108 | DKCFN.PI.012.E5.02 | 08.2019
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