Danfoss APP 53, APP S 53, APP S 674 Service guide

Service guide

Changing motor flange

APP / APP S / APP S 674 53-86

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Service guide | Changing motor ﬂange APP / APP S / APP S 674 53-86

Table of Contents

1. Introduction

Contents

1. Introduction ....................................................................................................................................................................... 2

2. Disassemble motor ﬂange ............................................................................................................................................ 3

3. Assembly motor ﬂange .................................................................................................................................................. 5

4. Exploded view ................................................................................................................................................................... 7

This document covers the instructions for changing motor ﬂange on the axial piston pumps APP / APP S / APP S 674 53-86.

Important: Place the pump horizontally on a pallet or other stable surface above the ground. Ensure that the pump cannot roll.

Tools provided with toolset 180Z0665:

• 1 x cone bushing extractor

• 1 x M8 x 140 screw

• 3 x M8 x 70 screws with nuts

• 3 x valve plate ﬁxation

• 2 x M6 x 65

• 2 x tool washer

• 1 x M16 pin and nut

• 1 x ø30/17 x 3 washer

• 1 x shaft seal press bush tool

• 1 x bracket

• 1 x 8 mm Allen key

• 1 x 6 mm Allen key

For a better understanding of the pump, please see the exploded view in section 4.

• 1 x M8 x 40 with nut

• 2 x combination wrench 13mm

• 1 x combination wrench 24 mm

• 1 x combination wrench 30 mm

• 1 x 24 mm socket (½”)

• 1 x torque wrench (½”)

• 1 x valve plate tool

• 2 x screw drivers, 5.5 x 1mm

• 1 x NV24 ﬂush valve tool

• 2 x M8 x 16 bolts

• 1 x valve plate mount

180R9403 | 521B1470 | DKCFN.PI.013.1I.02

Service guide | Changing motor ﬂange APP / APP S / APP S 674 53-86

2. Disassemble motor ﬂange

1. Remove the coupling and shaft key (if your pump model is an APP S / APP S 674 there are no shaft key. The shaft has a spline instead).

3. If necessary, replace the O-ring.

2. Remove the 4 M6 screws from the cover for shaft seal. Use 2 M6 screws to extract the cover mounting them into the threads in the cover for shaft seal.

4. Replace 3 screws with the 3 M8x70 screws so they are equally separated from each other. Torque the screws slightly and fasten the nuts until they make contact with the motor ﬂange. Remove the remaining screws.

5. Install guide screw in the top. Loosen the three nuts sequentially one round at a time, so the end ﬂange comes out as straight forward as possible. Use two combination wrenches so you do not unscrew the screws while loosening the nuts.

6. Slide the motor ﬂange out, using the guide pin to protect the shaft seal. Make sure the guide pin in the housing remains in place.

180R9403 | 521B1470 | DKCFN.PI.013.1I.02 | 3

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