Section E - Hydraulics
Valves
Excavator Valve
E-135 E-135
9803-9340-8
Dismantling and Assembly
When Dismantling
CAUTION: Absolute cleanliness is essential when
stripping and assembling hydraulic components.
Note: It is not necessary to separate valve sections to
remove spools, connections, relief valves etc. from the
valve block.
1 Remove nuts A from end cover B and remove cover
from valve.
2 Withdraw the valve sections from the tie rods C.
3 Remove and discard 'O' rings D.
Inspection
1 Check the mating faces of the valve sections for
scratching, pitting, burrs and/or corrosion. Renew
valve sections as necessary.
2 Check the 'O' ring seatings for scratching, pitting,
burrs and/or corrosion. Renew valve sections as
necessary.
When Assembling
Note: Lubricate all seals and 'O' rings with hydraulic fluid
on assembly.
1 Slide the valve section onto the tie rods C in the
correct order and orientation, fitting new 'O' rings D.
2 Fit nuts A to tie rods C. Lay the valve onto a smooth
surface and progressively tighten the nuts to the
specified torque setting, checking for correct section
alignment as the nuts are tightened.
Torque Settings
Key
JCB (+) Pattern Controls ISO (+) Pattern Controls
B End Cover B End Cover
E Dipper Spool E Boom Spool
F Bucket Spool F Bucket Spool
G Stabiliser Spool G Stabiliser Spool
H Slew Spool H Slew Spool
J Boom Spool J Dipper Spool
K End Cover K End Cover
L Main Relief Valve L Main Relief Valve
M Blanking Plug M Blanking Plug
Item Nm kgf m lbf ft
A 16.7 - 17.7 1.7 - 1.8 12.3 - 13
Key
JCB (+) Pattern Controls
ISO (+) Pattern Controls
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