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8-41
ASSEMBLY
General precaution
In this assembly section, explanation only is shown.
For further understanding, please refer to the figures shown in the previous structure &
disassembly section.
Pay close attention to keeping all seals free from handling damage and inspect carefully for
damage before using them.
Apply clean grease or hydraulic oil to the seal so as to ensure it is fully lubricated before assembly.
Do not stretch seals so much as to deform them permanently.
In fitting O-rings, pay close attention not to roll them into their final position in addition, a twisted
O-ring cannot easily untwist itself naturally and could thereby cause inadequate sealing and
thereby both internal and external oil leakage.
Tighten fitting bolts for all sections with a torque wrench adjusted to the respective tightening
torque.
Do not reuse removed O-rings and seals.
Load check valve
Assemble the load check valve and spring.
Put O-rings on to plug.
Tighten plug to the specified torque.
余
Hexagon wrench : 10 mm
余
Tightening torque : 6~7 kgf
余
m (43.4~50.6 lbf
余
ft)
Negative control relief valve
Assemble the nega-con poppet, piston, spring holder and spring together into body.
Put O-ring on to plug and tighten the latter to its specified torque.
余
Hexagon wrench : 12 mm
余
Tightening torque : 8~9 kgf
余
m (57.8~65.1 lbf
余
ft)
Main relief, overload relief valves
Install main relief valve, overload relief valve into the body and tighten to the specified torque.
4)
(1)
刮
刯
到
刱#
刲#
刳#
刴#
(2)
刮
刯
到
(3)
刮
刯
(4)
Main spools
Carefully insert the previously assembled spool assemblies into their respective bores within of
body.
Fit spool assemblies into body carefully and slowly. Do not under any circumstances push them
forcibly in.
(5)
刮
侍
Component
Tools
Tightening torque
kgf
余
m
lbf
余
ft
Main relief valve
Spanner 32 mm
8~9
57.8~65.1
Overload relief valve
Spanner 32 mm
8~9
57.8~65.1
Summary of Contents for HX140L
Page 12: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Page 209: ...4 5 MEMORANDUM...
Page 694: ...8 68 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Page 734: ...8 108 Assemble plug 2 Plug NPT1 16 11 EA 17 21078TM68 21078TM69 21078TM70 21078TM71...
Page 756: ...8 130 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...