McHale Issue 5 - Which Hydraulic System is Used?; Hydraulic Spool Valve Setup

McHale Fusion Vario Baler & Wrapper
43
5.8 Which hydraulic system is used?
5.9 Hydraulic spool valve setup
Procedure to select an open/closed-centre valve configuration:
1. Using a 17 mm spanner, loosen locknut (A) as shown below
2. With a 4 mm Allen Key, tighten or unscrew the bolt (B) according to the
following guidelines:
(a) Open-centre (factory default): Screw in fully (do not overtighten)
Tightening torque = 6.0 Nm
(b) Closed-centre/load-sensing: Unscrew 5 full turns from the fully in position
3. Re-tighten 17 mm locknut. Tightening Torque = 20 Nm
1. Open-centre
Set as open-centre
(default factory setting)
2. Closed-centre
Set as closed-centre /
load-sensing
3. Load-sensing
Does the tractor have a
‘Power Beyond’ &
‘Sensing Line’
connection fitted?
Yes
No
Contact your
tractor dealer
to get ‘Power
Beyond’
option fitted
Set as closed-
centre / load-
sensing
SET-UP (A)
1. Plug feed line into
auxiliary spool output
ensuring it can supply an
oil flow of at least 30 l/min
@180 bar.
2. Plug return line into
free-flow return.
SET-UP (B)
1. Plug feed line into
auxiliary spool output
ensuring it can supply an
oil flow of at least 30 l/min
@180 bar.
2. Plug return line into
free-flow return.
SET-UP (C)
1. Plug feed line into power beyond output.
2. Plug return line into free-flow return.
3. Plug sensing-line hose into ‘Power Beyond’
connection on tractor.
A
B