VALVE SET - Hjallerup Maskinforretning A/S

CONTROL
- Disconnect the safety catch (E) and check that the
control device lever always returns to neutral position
except when the lever is brought maximally forwards to
floating position.
The lever should then remain in this position.
Lever movement:
Backwards - Lifting of loader beam
Forwards - Sinking of loader beam + floating function
Left - The implement is crowded upwards 1)
Right - The implement is emptied 1)
1) Tobtain the reverse lever movement (LH fitting), the
hoses marked yellow and red (implement function)
will have to change places. Check that the direction
indicator on the MONO-lever corresponds to the
movements of the loader - the handle will be supplied
with a new top for left hand fitting. The ref no of this
top is 50 20 385. See fig.A.
The loader shall be connected to the valve acc. to the
colour marking:
GREEN (B1) = Sink
BLUE (A1) = Lift
YELLOW (A2) = Tip
RED (B2) = Crowd
YELLOW (A2) = Tip
Connect the valve to the tractor hydraulics acc. to
separate mounting instruction. Therefore only general
information is given here.
ENGLISH (105 -157)
- Connect the tractor pump ( pressure) to the valve port
(P).
- Port T - connect to tank (return).
- Port LS - aimed for signalling circuit.
Test run all the functions of the loader (towards end
positions) and check that there are no oil leakages.
Check after test run that the oil level in the tractor's
hydraulics system is sufficient ( all hydraulic rams
compressed). Fasten the hydraulic hoses with clamps
so that they do not wear against pedals and control
stays, if any.
REMARK !
The valve is equipped with safety valves (M) for the
lifting function (240 bar) of the loader.
GREASING
Fig.B
The control cable ends as well as the pivot pin in the
joystick are greased on delivery with MOLYCOTE 33M.
Normally suppl. greasings will be required only when
changing the parts.
A
B
TROUBL
A The valve is difficult to handle.
TROUBLE SHOOTING CHART
CAUSE
1 Control cables jammed.
REMEDY
1 Check installation.
B
Exterior leakage at valve
spools.
1 Damaged sealing.
2 Faulty connection of valve.
1 Replace sealings (24).
2 Check that return hose to tank
is mounted.
C
Loader sinks somewhat when
the lifting movement has begun.
1 Defective check valve.
1 Clean / replace check valve
(4).
D
Loader has inadequate lifting
or crowding capacity.
1 Oil pressure too low
a) Defective oil pump
1 Check the oil pressure
a) in front of valve
b) behind valve
E
Loader does not hold the load
up when the control is in
NEUTRAL position. N.B.: There
might b e a minor leakage
inside the valve (manufacturer's
allowance).
1 Damaged valve spool - valve
housing.
2 Defective safety valve.
1 Change the valve (just changing
seals will not help).
2 Check the pressure setting
(240 bar) of the safety valve.
F
The tractor's hydraulics doesn't
work.
1 Faulty signalling pressure.
1 Check mounting and check
valve, if any, between tractor
and valve.
105