Finish fitting the end-plate by gradually screwing the 2
nuts
412
onto the 2 screws
411
.
Make sure that the end-plate lies on the center line while
it is being screwed down.
When the end-plate is installed, remove screws
411
fitted
with their nuts
412
and screw them into the 2 bosses.
Put screws
410
back in place.
Remove the end-cover
705
, fit the circlips
537
and refit
the cover
705
, checking seals
707
and
714
.
Free the shaft line by a slight blow with a mallet at its
ends and makes sure that the pump turns freely by
hand.
Screws
411
, which are longer, are to be screwed back
into the holes in the end-plate having 2 bosses.
5.5 To change the vanes
Open the pump on the drive side.
Remove from the remaining end-plate the 4 screws
410
,
the 2 screws
411
and take out the vanes
317
as well as
the 3 pushrods
318
. Check the vanes and pushrods for
wear. (see § MAINTENANCE).
In case of abnormal wear, check the surface of the body
and the faces of the end-plate. Refit the pushrods,
making the holes in the rotor and the shaft coincide and
making sure that the packing drive spigots are facing the
notches in the rotor (see § REASSEMBLY).
Refit the vanes (new if necessary), orienting them cor-
rectly.
Reinstall the end-plate/shaft/rotor assembly, making
sure that the end-plate seal is in the right position. Check
it and replace it if necessary.
Complete reassembly of the pump by reinstalling the
other end-plate and check that it can be turned easily by
hand.
5.6 Changing of single-piece packing (item 630)
DISMANTLING
Open the pump and lay the end-plate on its machined
side, being careful not to damage the 2 packing drive
spigots as well as the positioning pin (in the case of
assembly with speed-reduction gearing, remove bolts
724
from the reduction gear side plate
706
and take off
the shim
710
).
Remove the parts.
Take out packing
630
by pulling on it with the fingers
inside its bore.
REASSEMBLY
Refit the packing (new if necessary).
Reassemble all the parts in reverse order with respect to
disassembly (do not forget shim
710
when assembling
with a speed reducer).
In this operation, make sure that gaskets
605
and
613
are good.
Refit the end-plate (see § OPENING PUMP ON SIDE
OPPOSITE DRIVE SIDE).
5. ASSEMBLY / DISMANTLING (continued)
NT 1010-G00 05.13 CC8-65 EP Pump e
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