Multi--Function Block Removal And Installation - Sauer Danfoss 51 Series Manual

GROUP 3025
6.5.8 Multi-- Function Block Removal and
Installation
(1) Remove the EQ Proportional Control as de-
scribed in paragraph 6.5.6.
(2) With an 8 mm internal hex wrench, remove
the four (4) screws and washers retaining
the multi---function block to the end cap
(Fig.40).
Figure 40. Multi- -Function Block Fasteners
(3) Remove the Multi---Function block from the
end cap (Fig. 41). Remove the o---rings be-
tween the multi---function block and the end
cap and the o---ring on the valve spool
sleeve.
Figure 41. Multi- -Function Block Removal
(4) The multi---function block is equipped with
filter screens in the passages between the
block and the end cap (Fig. 42). Units with
an internal servo pressure supply also have
3025- -9A, Page 22
a filter screen installed in the end cap pas-
sage leading to the valve spool sleeve. If
screens are removed due to damage or for
cleaning, the replacement screens must be
installed with the rounded edge facing out
approximately 0.08 in (2.0 mm) below the
machined face of the multi---function block
or end cap.
Figure 42. Screen Locations
(5) Units with external servo pressure supply
have a plug installed in the end cap passage
leading to the valve spool sleeve. This plug
may be removed with a 2.5 mm internal hex
wrench. When reinstalling this plug it must
be torqued to 18 in. lbs (2 Nm).
(6) Install a new o---ring onto the valve spool
sleeve in the end cap. Install new o---rings
onto the end cap as shown in Figure 43.
Figure 43. O- -Ring Locations
(7) Install the multi---function block on the end
cap with four screws and washers.
HYDRAULIC PUMP