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Doosan D55C-5 Disassembly/Assembly

Doosan D55C-5
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Vehicle Systems Disassembly & Assembly 19
Assembling Inlet Section Assembly
Combination number shall be in accordance with the
attached Part List (P/N: C0213-41001).
Tightening torque of each part shall be in
compliance with the Parts List.
1. Mount O-rings and wipers on each plug.
2. If the two plugs (42) and (59) were removed,
tighten them at the original position.
3. Insert the main poppet into the poppet (unload
valve) to make the poppet assembly(32), and
insert it into the inlet housing(1).
Then, insert the spring(33) into the main poppet,
and tighten the plug(34) making sure that its end
is inserted in the inside of the spring(33).
4. Take care when assembling the spool(26)
because the valve(28) is directional.
As shown inFig.5-2, assemble with the orifice
inside the plug(29), and insert the plug(29) into
the spool(26).
Then, while holding the spool(26) in a vise with
rigid wood pieces(Fig. 2-1) to prevent damage,
tighten the plug(26).
Finally, insert the spring(27) into the sub-
assembled spool(26), insert it into the inlet
housing(1) and tighten the plug(30).
5. Insert spring(51) into the spool(50), tighten
plug(52).
6. Assemble two relief valve assemblies (41) in the
original mounting ports. Take care not to confuse
the position.
7. Insert shuttle(36) into spring(37) and insert them
into inlet hosing(1).
At this time, the shuttle(36) may be ejected out by
spring(37) force. Place the solenoid(38) on the
end of the shuttle, slowly insert them into the
position where they will not come out by the
friction of the O-ring in the in-low part, and tighten
with socket head bolt.
8. Insert poppet into the main body of the shut-off
valve (20), mount them on the inlet housing(1).
And then tighten with set screw. Finally, join lock
nut onto the set screw.
9. Insert spring(17) into poppet(16).
Make sure to insert the larger diameter part of the
spring(17) into the poppet as shown in.
If assembled in opposite, the spring may be
broken.
Insert the poppet(16) inserted with spring(17)
Into plug(18), tighten to the inlet housing(1) so
that the Poppet(16).
10. Insert poppet(21) and spring(22) into inlet
housing(1). Tighten by turning the solenoid valve.
11. Assemble O-ring(3) and wiper(4) in the seal hole
on the spool head side of inlet housing(1). Fix
the seal plate(5) with screw(15).
12. Finally, insert the sub-assembled spool(2) from
the opposite side of the inlet housing(1), cover
with cap(13), and tighten with screw(15).
Cautions For Inserting Spool
Insert the spool slowly, vertically to the axis of the
hole. Reciprocate the spool with hands to check if
there is any resistive or uneven feeling which may
cause malfunction of the spool.
Orifice F
Fig.5-2
Coil Dia.

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Doosan D55C-5 Specifications

General IconGeneral
BrandDoosan
ModelD55C-5
CategoryEngine
LanguageEnglish

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