General Pump HF Repair Manual - Manual (Page 4)

Page 4
GENERAL PUMP
A member of the Interpump Group
HF SERIES
2.1.1 Crank Mechanism Disassembly
The correct sequence is the following
A) Disassemble:
• pump shaft key
• rear cover
• connecting rod cap
• side covers using 3 wholly threaded M6 x 50 screws, inserting them in the opposite holes
as shown in fig. 2
B) Push the plunger guides and connecting rods forward in order to facilitate the lateral
extraction of the pump shaft. Two marks are visible on the crankshaft, as shown in fig. 3; they
must be turned towards the operator in order to facilitate extraction. NOTE: to extract the
plunger guide it is necessary to remove the ceramic plunger and wiper first.
C) Disassemble the crankshaft oil seals and the plunger guides using standard tools.
Ref 300623 Rev.A
01-12