15
Pump head repair
Assembling the pump head
Order of operation
for assembly
The pump head is assembled in this sequence:
• The pump head is assembled.
• Peripherals are attached to the pump head.
• Pump head is installed into the pump.
Assembly begins with inserting the new seals on the feed and
flushing blocks. The blocks are then laid onto each other in the
correct orientation.
Pre-forming the high-
pressure seal
Process
Figure
1. Set the high-pressure
seal (A) with the
metal washer spring
pointing outwards
onto the special tool
(B) and pre-form the
seal.
Fig. 10
Special tool for pressing in
the high-pressure seal
B
A
Press in the high-pres-
sure seal with the spe-
cial tool
Process
Figure
1. Press the high-pres-
sure seal into the
feed block using the
special tool (A).
Fig. 11
Special tool in the feed
block
A
