General Pump HF Owner Manual - Manual (Page 13)

GENERAL PUMP
A member of the Interpump Group
HF SERIES
Page 13
C) Before reassembling the side covers, check the seal
lips for wear. If they need replacing, fit the new ring
following the indications in Fig. 12.
E) Fit the back cover putting the dipstick hole upward.
11.1.3 Disassembling / Reassembling of the bearings
and shims
The type of bearings (conical roller) ensures there is no
end float on the crankshaft; the shims are to be determined
to reach that purpose. To disassemble, reassemble and if
required replace them, it is absolutely necessary to do as
indicated below.
Disassembling / reassembling of the crankshaft
without replacing the roller bearings
After removing the side covers, as indicated on point
11.11.1, check the rollers and reces for wear; if they are in
good state, accurately clean the components with suitable
degreaser and grease them again evenly with oil (same as
the pump oil).
The same shims can be used again, taking care to fit them
under the sight glass cover.
After installing the complete unit (sight glass side flange +
crankshaft + engine side flange), check that the rolling
couple - with connecting rods free - is at least 4 Nm, max
7 Nm.
To position the two side covers on the crankcase, you
can use 3 screws (M6 x 40) first, and then the original
screws to fix them.
The rolling couple of the crankshaft (with connecting rods
coupled) must not exceed 8 Nm.
NOTE: Should the shaft show diameter wear in the seal
position, it is possible to avoid grinding it by fitting the
seal further as indicated in Fig. 12. Before installing the
cover, (sight glass side) check the shim rings have been
placed. To help the covers fit on the crankcase, you can
use 3 screws M6 x 40, and then finish screwing them
with the original bolts (M16 x 18).
D) Install the connecting rod cap taking care the
numbers match and tighten the relevant bolts in 3
different stages:
1. Approach torque 6-8 Nm
2. Presetting torque 25-28 Nm
3. Tightening torque 38 Nm
NOTE: The screws must be greased on the thread and
under the head.