Danfoss APP 0.6, APP 1.0 Service guide

Service guide

APP pumps

APP 0.6 - 1.0

Disassembling and assembling

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Service guide | Disassembling and Assembling, APP 0.6-1.0

Table of Contents	Contents
	Introduction.................................................................................................................................................................................		2
	1.	Disassembling and assembling the pump.............................................................................................................	3
	2.	Removal of flushing valve.............................................................................................................................................	6
	3.	Change of shaft seal........................................................................................................................................................	7
	4.	Exploded view APP 0.6-1.0........................................................................................................................................	10

Introduction	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	Tools needed:
	disassembling and assembling the axial piston	• Shaft seal tool (code no. 180B4142)
	pump APP 0.6-1.0	• Seal set (code no. 180B4141)
		• 2 Screwdrivers
	Important: It is essential that the pump is	WARNING: Do not reuse disassembled O-ring
	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 | 180R9092 | DKCFN.PI.013.EC5.02 | 521B0739

Service guide | Disassembling and Assembling, APP 0.6-1.0

1.Disassembling and assembling the pump

1.Unscrew the 4 mounting screws and remove seal SAE flange.

Do not yet unscrew the 2 lower screws.

2.Wet the shaft and shaft seal with clean (filtered) soap water. Gently lever the shaft seal assembly free using 2 screwdrivers.

3. Unscrew the 2 lower screws.

4.Carefully turn the whole pump over so that the shaft is facing down. Support the pump in a suitable hollow base so that the pump is not supported by the shaft.

5. Remove the housing.

6.Remove the pistons, retaining plate, retaining ball, spring guide, and spring from the cylinder barrel.

180R9092| DKCFN.PI.013.EC5.02 | 521B0739| 3

Service guide | Disassembling and Assembling, APP 0.6-1.0

7. Remove the cylinder barrel.

9.Gently lever the valve plate assembly free with the aid of a screwdriver.

8. Remove the port plate and guide pin.

Mount backup ring first

Then mount

O-ring

10.Replace the O-rings and the back-up rings on the valve plate. Mount the new backup rings on the new valve plate first and then mount the new O-rings.

Wet the O-rings and back-up rings with clean (filtered) soap water.

11.Gently press, by hand, the valve onto the cylinder barrel.

Locating hole

Guide pin

12.Position the port plate over the guide pin.

IMPORTANT: Make sure that the guide pin is located in the locating hole in the port plate

4 | 180R9092 | DKCFN.PI.013.EC5.02 | 521B0739

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