Section E - Hydraulics
Valves
Excavator Auxiliary Valve
E-139 E-139
9803-9340-8
Excavator Auxiliary Valve
Removal and Replacement
Removal
!M
WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you.
Before disconnecting or connecting hydraulic hoses
or couplings, vent the pressure trapped in the hoses in
accordance with the instructions given in this
publication.
HYD-1-5
Before working on the hydraulic system ensure that the
engine is switched off and the starter key removed.
Operate the control levers to vent the hydraulic pressure.
Drain the hydraulic tank.
Remove the rear floor plate.
Disconnect the control pedal linkage from the top of the
valve spool 1.
Disconnect all hydraulic hoses 2 from the valve ports.
Cover exposed connections to prevent ingress of dirt.
Mark the hoses to ensure correct reconnection.
Remove the securing nuts and bolts 3 and lift the valve
block 4 from the machine.
Replacement
Replacement is a reversal of the removal procedure.
If a new valve block is being fitted it will be necessary to
transfer the adapters from the old valve block. Use new ‘O’
rings.
Ensure all hoses and ports are clean and free from dirt.
Torque Settings
765040-1
Fig 7.
Dismantling and Assembly
Dismantling and assembly procedures are similar to the
Loader Valve (see this section).
Item Nm kgf m lbf ft
3 56 5.7 42
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