16
Pump head repair
Inserting the spacer
Process
Figure
1. Insert sapphire ring
into adaptor ring (A)
and place on sealing
tool.
2. Using the special
tool, insert the adap-
tor ring, together
with the sapphire
ring, into the feed
block.
Fig. 12
Sapphire ring in the adaptor
ring
A
Inserting the guide
disc and the O-ring
into the piston back-
flushing
Process
Figure
1. Insert guide discs (A)
into the flushing
block.
2. Insert O-rings (B).
3. Put the feed block
and piston backflus-
hing together in the
correct orientation.
Fig. 13
Piston backflushing with
O-ring
A
B
