Service guide | Disassembling and Assembling, APP 11-13 and APP 16-22
© Danfoss | DCS (im) | 2017.06
180R9228 | 521B1181 | DKCFN.PI.013.V3.02 | 13
7. Changing pistons
Tools needed are:
•
13 mm combination wrench
•
6 mm allen key
Service kit see parts list 521B0941
Note: It is essential that the pump is
serviced in conditions of absolute
cleanliness.
1. Disconnect the pump from the system, or
close all connection pipes (water supply).
Bleed water from the pump.
Warning: Never unscrew the 2 screws
marked with coloured sealer.
2. Loosen all screws on the pump except the
3 screws as shown in the picture above,
using the 13 mm combination wrench.
3. Unscrew the remaining 3 screws using
the combination wrench and turn each
screw a couple of rounds at the time, to
ensure the swash plate is loosened as
straight backwards as possible.
Note: There is nothing to hold the swash
plate!
4. Remove the flange/swash plate carefully.