Service guide
|
Disassembling and Assembling, APP
21 - 46 and APP W HC 15 -30
© Danfoss | 2023.03
12 | 180R9406 | AX274339308034en-000302
7. Changing pistons
Tools needed are:
•
13 mm combination wrench
•
6 mm allen key:
•
•
Service kit - see parts list 521B0941
7.1 Disassembling
1. Disconnect the pump from the rest of the
system.
Warning:
Never unscrew the 4 screws marked
with coloured sealer.
2. Loosen all screws on the pump except
the three screws as shown above.
Note:
There is still water inside the pump.
3. Mount the guide bolt in the top hole.
4. Unscrew the remaining three screws
by using the combination wrench to turn
each screw a couple of rounds at a time so
the flange is removed as straight forward
as possible..
