6. Assembly
6.3.10 Changing VP progressive metering device sections
Intermediate plates are located between
the progressive metering device sections.
They connect the mating boreholes within
the sections while also sealing the system
against outside influences. Different plates
belong to the inlet, progressive metering
device, and end section.
-see Figure 22
IMPORTANT NOTE
Absolute cleanliness is required when
changing one or more progressive me-
tering device sections!
The progressive metering device must be
cleaned thoroughly prior to the retrofitting
procedure, and the workspace must be
free of contaminants and dust.
The progressive metering device has al-
ready been disassembled, inlet and outlet
fittings and mounting screws must already
be removed.
• Clean any contamination from progres-
sive metering device, place on a clean
installation surface or clamp into a vice in
a stress-free position.
• Loosen and remove both self-locking
nuts (1) from the tie-rods (2).
If the tie-rod (2) comes out too when
unscrewing the self-locking nuts (1),
first remove the self-locking nut from
the tie-rod. The tie-rod’s thread must
not be damaged in the process. In place
of the self-locking nut, install two nuts
and position them against each other.
Apply locking adhesive at the other end
of the tie-rod and then use the locknuts
to screw the tie-rid into the inlet sec-
tion (3) with a torque of 2.5 Nm. Then
remove the locknuts.
• Carefully loosen the end section (4) with
end plate (5) from the progressive meter-
ing device sections (6) and
• and intermediate plates (7) and remove
them from the tie-rods (2).
While performing the following instal-
lation of the new progressive metering
device sections (6) and intermediate
plates (7), be sure that they are mount-
ed in the correct position (see Fig. 22,
assembly knobs).
• Carefully insert new progressive metering
device sections (6) with new intermediate
plates (7) into the tie-rods.
• Carefully insert the end plate (5) with end
section (4) into the tie-rods and align the
inlet section, metering sections, interme-
diate plate, and end plate as well as the
end section to one another.
• Apply self-locking nuts (1) to tie-rods (2)
and tighten alternatingly up to a torque of
12 Nm each.
• Reinstall the progressive metering device
and check that it is properly sealed.
- 56 -
951-230-008-EN
Version 04
EN
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