Danfoss APP(W) 5.1, APP(W) 10.2 Service guide
Service guide
APP pumps
APP(W) 5.1-10.2
Disassembling and assembling
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Service guide | Disassembling and Assembling, APP(W) 5.1-10.2
Table of Contents |
Contents |
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Introduction................................................................................................................................................................................. |
2 |
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1. |
Disassembling the pump.............................................................................................................................................. |
3 |
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2. |
Assembling the pump.................................................................................................................................................... |
5 |
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3. |
Disassembling swash plate........................................................................................................................................... |
6 |
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4. |
Assembling swash plate................................................................................................................................................ |
7 |
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5. |
Change of shaft seal........................................................................................................................................................ |
8 |
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6. |
Exploded view for APP (W) 5.1-10.2....................................................................................................................... |
12 |
Introduction |
NOTE: If the pump is disassembled within the warranty period, the pump is no longer covered |
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by the warranty. |
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This document covers the instructions for |
Tools needed: |
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disassembling and assembling the axial piston |
• Toolset (code no. 180B4162) |
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pump APP(W) 5.1-10.2 |
• Seal set (code no. 180B4161) |
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• Screwdriver |
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Important: It is essential that the pump is |
WARNING: Do not reuse disassembled O-ring |
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serviced in conditions of absolute cleanliness. |
or shaft seal as they might be damaged. |
To understand the pump design better, please see exploded view on last page.
2 | 180R9238 | DKCFN.PI.078.F3.02 | 521B1196 |
© Danfoss | DCS (im) | 2017.06 |
Service guide | Disassembling and Assembling, APP(W) 5.1-10.2
1. Disassembling the pump
1.Unscrew the seal-retaining ring counterclockwise and remove it.
2.Unscrew the 8 screws in the mounting flange.
3.Carefully remove the mounting flange from the housing.
4.Wet the shaft and shaft seal with clean (filtered) water.
5.Carefully remove the shaft seal assembly using the shaft-seal extractor supplied, provided with the tool set. The extractor must fit underneath the shaft seal.
6.Remove the whole cylinder barrel and carefully place it on a suitable clean surface.
7.Remove the pistons, retainer plate, stop bush and retainer ball from the cylinder barrel.
© Danfoss | DCS (im) | 2017.06 |
180R9238 | DKCFN.PI.078.F3.02 | 521B1196 | 3 |
Service guide | Disassembling and Assembling, APP(W) 5.1-10.2
9.Remove the O-rings and back-up rings from the valve plate.
10.Mount the new back-up rings on the new valve plate.
8.Carefully remove the valve plate assembly using a screwdriver.
Mount backup ring first 
Then mount
O-ring
11. Mount the new O-rings.
12.Carefully press, by hand, the cylinder barrel onto the valve plate.
13. Remove the port plate by hand.
© Danfoss | DCS (im) | 2017.06 |
180R9238 | DKCFN.PI.078.F3.02 | 521B1196 | 4 |
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