74
GB 14 08 01
Maintenance
FFFFFan speed adjustment
an speed adjustment
an speed adjustment
an speed adjustment
an speed adjustment
(Bowden cable adjusted pumps only). The boom fan
speed base adjustments are carried out as follows.
A tachometer is required for this job.
1. Fit a piece of light-reflecting tape to the fan wing and
to the tractor P.T.O.
2. Unfold the boom to working position.
3. Set tractor P.T.O. at 540/1000 r.p.m. - check with the
tachometer.
4. Set the fan speed control lever to max. speed.
5. Measure the fan speed with the tachometer. The fan
speed must be 3100 r.p.m.
WARNING!
Do not wear loose hanging clothes!
Hold the tachometer firmly in your hands in order
not to be sucked into the fan. DO NOT REMOVE
THE PROTECTION GRID!
6. Turn the swash plate
adjustment screw
E
CW to decrease or
CCW to increase the
blower r.p.m.
Remember to tighten
the counter nut.
Repeat 3. and 4. until
the correct setting is
obtained.
7. If the correct fan r.p.m. cannot be reached, the
hydraulic transmission pressure settings must be
checked - see section on Fan transmission pressure
adjustment.
FFFFFan tr
an tr
an tr
an tr
an transmission priming
ansmission priming
ansmission priming
ansmission priming
ansmission priming
If the hydraulic fan transmission has been dismantled, or
pump or motor has been changed, the following priming
procedure must be carried out before starting up the
transmission:
1. Fill the oil reservoir with fresh, clean oil to the top of
the sight glass.
2. Fill the pump housing with
oil through the drain pipe
D
which is dismantled at the
tank connection. Recon-
nect and tighten.
3. Check the oil level in the
gear box.
4. Remove the drain hose
D
from the motor outsidethe
blower housing.
5. Set the fan r.p.m. at 0,
engage the tractor P.T.O. with the engine running idle
- wait a few minutes.
6. Set the fan speed at 200 r.p.m.
7. After a while the oil will start dripping constantly. Refit
the drain hose and tighten.
8. With the tractor P.T.O. at 540/1000 r.p.m. the fan
should rotate at max. revolutions/min.
9. Recheck oil level at tank sight glass.
10.Check vacummeter at the suction filter.
11.Retighten hose connections and check for leaks.
12.Check fan speed and feed pressure adjustments -
see sections on Fan speed adjustment and Fan
transmission pressure adjustment.
FFFFFan tr
an tr
an tr
an tr
an transmission pr
ansmission pr
ansmission pr
ansmission pr
ansmission pressur
essur
essur
essur
essure adjustment
e adjustment
e adjustment
e adjustment
e adjustment
A
= Pressure port
B
= Return port
D
= Drain port
P1
= Connector for working pressure measurement
P2
= Connector for feed pressure
R
= Adjustment Screw for fed pressure
S
= Suction port
The transmission feed and working pressure are
checked as follows:
1. Connect a 40 bar (580 p.s.i.) pressure gauge to the
feed pressure connector
P2,
and a 400 bar (5800
p.s.i.) pressure gauge at the working pressure con-
nector
P1
.
2. Set the tractor P.T.O. at 540/1000 r.p.m. - check with
tachometer.
3. Set the blower at max. speed.
4. Check the feed and working pressure:
E
T090-0002
A
B
C
T090-0002
D
A
P1
B
D
P2
R
S
T090-0003
T090-0005
A
B
D
T090-0002