General Pump KEZ Repair Manual - Manual (Page 13)

GENERAL PUMP
A member of the Interpump Group
KEZ SERIES
Page 13
2.2.4 Plunger Unit Disassembly
The plunger unit does not require periodical maintenance. Service interventions are limited to visual
inspections only. For plunger unit extraction, operate as follows:
A) Unfasten the plunger screws as shown in fig. 20.
fig. 19
B) Check for wear; replace if necessary.
At each disassembly, all plunger unit O-rings MUST be replaced.
2.2.5 Head assembly - seals - plunger unit
Reassemble the various components by inverting the operations previously listed in paragraph 2.2.3, paying careful
attention to the following:
A) Seal packing: respect the same order followed during disassembly.
B) Lubricate components 3 and 5 with silicone grease type (#F12001600) on outer diameter only.
C) Fore ceorrectly assembling the HP seals in their related seats on the head, use the correct tools as indicated in
Section 4.
D) Reassemble the plungers by fastening the screws with a torque wrench, respecting the fastening torque
value inicated in Section 3.
E) Assemble the head: for fastening torque values and fastening sequences, follow the instructions in Section 3.