Control Valve 2. Assembly of Control Valve Main Unit (1) Assembly of add-on section [1] Install the tie rod (71) to the main unit valve housing (1).
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Tighten the tie rod all the way in.If the threaded section is only engaged a little, there is a danger of the add-on section tightening force being inadequate, allowing oil to leak from the matching surfaces and causing malfunction.
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[2] Install the matching surface O-rings (3-5), (3-6), (3-7) and (3-8) on the inlet housing (3-1) and using the tie rod as a guide, mount on the main unit valve housing. [3] Install the matching surface O-rings (2-11), (2-14), (2-15) and (2-16) on the spool section valve housing (2-1) and using the tie rod as a guide, mount on the main unit valve housing. [4] Install the matching surface O-rings (73), (74), (75) and (76) on the outlet housing (33) and using the tie rod as a guide, mount on the main unit valve housing.
CO US N F E ID O E F N TS TI M AL GL : F O OR BA T L H
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When installing the add-on section, avoid any dents, scratches on matching surfaces because there is a danger of them allowing oil to leak from those surfaces and causing malfunction.Also, at the same time, pay particular attention to avoid foreign matter getting trapped on matching surfaces and O-ring falling out of place or being extruded. When installing the add-on section, always install the tie rod first and use it as the guide for determining the installation position.If position is performed without the tie-rod, there is a danger of matching surface O-rings being extruded, allowing oil to leak and causing malfunction.
[5] Screw the hexagon nut (72) into the tie rod (71) and tighten it. (Tightening torque: 51 ± 2.5 N•m) Always tighten the hexagon nut to the specified torque.If the tightening torque is too low, there is a danger of inadequate tightening force allowing oil to leak from the matching surfaces.Also, if the tightening torque is too high, there is a danger of spool section valve housing warping making the spool stick and the actuator run wild and making it impossible to stop.
With this control valve, it is possible to attach the add-on section kit afterwards. When doing so, work and pay attention to the cautions according to the assembly and disassembly procedures.
(2) Assembly of arm 1, 2 load check section
[1] Install the spring (46) and poppet (45) on the outer circumference of the sleeves (37) and (44), and with the poppet (47) and spring (49) inserted into the sleeve, insert into the valve housing. [2] Screw in and tighten the plug (48) with O-ring (50) attached. (Tightening torque: 167 - 196 N•m)
(3) Assembly of straight travel metering section (left travel section) [1] With the spring (46) and poppet (45) installed on the outer circumference of the sleeve (51), insert into the valve housing. [2] Screw in and tighten the plug (48) with O-ring (50) attached. (Tightening torque: 167 - 196 N•m) The arm 1 sleeve (44), arm 2 sleeve (37), and straight travel metering sleeve (51) have similar shapes, so be careful to not mix them up.If installation is incorrect, there is a danger of this causing malfunction.
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ASM-17-23-002EN 7
