Vehicle Systems Disassembly & Assembly 18
Assembling
Take following cares when handling the O-rings.
1. Do not use any defective O-ring, whether the
defect was made in forming or handling,
2. Apply grease or hydraulic oil on O-ring and their
seats for full lubrication
3. Do not stretch O-ring severely. Otherwise, it may
be deformed.
4. Do not roll-in the O-ring when mounting it.
If O-ring is twisted, it may cause oil leak.
Take following cares when handling the spool.
1. Keep specified torque. Excessive torque will
cause malfunction of spool.
2. Take care that the spool, spring, and cap screws
are combined in the same assembly as they were
before the disassembling.
Take following cares when assembling section
assembly and valve assembly.
1. O-rings in the fitting face must not protrude out.
2. Before assembling, following points must be free
from any washing or hydraulic oil.
・Fitting faces of each section, outside of O-ring
grooves.
・Capping surfaces, outside the O-ring grooves.
If oil is left at above points, it may be mistaken
as the oil leak.
Assembling the Valve Housing
1. Assemble poppet(10), spring(11), O-rings(12),
(15) or (18) on each section surface.
2. Insert the tie rods(2), (4) (P/N C0240-41001,
attached Parts List) to fix them in the inlet section.
Assemble the valve housings of each section in
correct order. Finally, assemble the outlet housing.
On the tie rod, tighten nuts(1), (3) to specified
torque. Take care that the spring(11) on the fitting
surface does not hinder.
Spool Subassembly
With reference to the attached Part List of each
section assemblies, mount O-ring, wiper and seal
plate on the spool in specified order. Insert spring
between the spring seats and mount it on the spool
with cap screw.
Hold the spool in a vise with rigid wood pieces (Fig.
2-1) to prevent damage during assembling. Apply
grease around the spring.
As shown in Fig. 5-1, the wiper must be mounted
with the protruded part facing outwards.
Be careful that the valve and spring are inserted in
the hollow space of the tilt spool only.
Protrusion
【Fig. 5－1】
O-rin
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