Kfm series, General pump – General Pump KFM Repair Manual User Manual

Page 11

GENERAL PUMP

A member of the Interpump Group

KFM SERIES

Page 11

2.2.3 Disassembly of the head - seals

Replacing the seals is necessary from the moment high losses of bentonite begin appearing from the opening under

the spacer, and in any case at the intervals specified in the table in (fig. 14) Chapter 11 of the Owner’s Manual.

A) Unscrew the M12 x 220 head fastening screws as shown in fig. 17 and the M12 nuts as shown in fig. 17a.

B) Separate the head from the pump housing.

C) Extract the high-pressure seal from the head after removing the seal packing / seal lip and the scraper with

its packing after removing the plungers (see paragraph 2.2.4) using simple tools as shown in fig. 18 pos. 5 and

fig. 18a, taking care to not damage their respective seats.

Pay careful attention to the order of seal packing disassembly as shown in fig. 19 and fig. 19a

composed of:

1. Seal packing

2. O-ring

3. H.P. Seal

4. Head ring

5. Scraper packing

6. Scraper ring