General Pump KF Owner Manual - Manual (Page 16)

GENERAL PUMP
A member of the Interpump Group
KF SERIES
Page 16
B) Remove the high pressure packings from the
fluid end and the low pressure ones from their
support by means of standard tools, taking great
care not to damage the seats. Fig. 23
Take note of the correct order of the entire package
components when dissassembling (Fig. 24):
1. Head ring
2. HP packing
3. “Restop” ring
4. Middle ring
5. LP packing
6. Back packing
7. Elastic Ring
8. O-ring
When reassembling, make sure of the correct order of the
C) Reassembling:
In order to carry out the replacement more easily, apply
a very small quantity of silicone grease on the pressure
packing lips and their seats on the fluid end. It is
necessary to help the sealing lips settle on the plunger.
D) Fit the fluid end back in place and tighten
the bolts with a torque wrench set for the
value indicated in the table on page 17 and
in the sequence indicated here below.
11.2.3 Plunger
To replace the plunger, if necessary, do as follows:
A) Loosen and remove the plunger screw (1, Fig. 26).
When dissassembling the pumping unit, the o-rings
should always be replaced.
B) To fit back the replaced components invert
the order using a torque wrench set for the
values indicated in the table.