Maestria / Gran Maestria service manual
59
R E P A I R S
7.4.9 Replacing steam pump
•
For better access remove lower pump holder (14) with coffee pump and flow meter
first (see “Replacing coffee pump and flow meter” on page 55).
•
Remove hose (10) from pump inlet (6).
•
Pull fluid connection clip and remove fluid nipple (8) from steam thermoblock (810).
•
Remove flat receptacle with gray wire (coming from electronic mainboard) from
pump.
•
For better handling pull pump inlet out of pump holder (5).
•
Press laterally at the front side of the pump holder to remove it from inner guiding
groove. Then pull it out of outer guiding groove laterally.
•
Remove spring clip (9) and reinforced hose (7) from pump outlet.
•
Remove pump from pump holder (5).
Assembly checkpoints
•
For tightness reason, replace the following parts together with the steam pump:
•
Reinforced hose (7)
•
2 spring clips (9)
•
Make sure that pump holder is inserted in guiding grooves completely:
•
Pre-assemble new pump in pump holder (5) with reinforced hose (7) and spring
clip (9). Do not insert pump inlet in pump holder yet.
•
Insert pump holder in outer guiding groove at first.
•
With the help of a screwdriver press pump holder into inner guiding groove.
6
10
8
5
9
7
The pump holder has
stoppers in the mid-
dle and at the rear
side and cannot be pulled
out.
Always use new
spring clips and a
reinforced hose for
assembly.
