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29
p/n GH 19502091
SERVICE
Cleaning and oiling the cutters
DANGER
Mowing bar cleaning and oiling are very dangerous
operations. Always comply with the following
instructions:
• Switch off the tractor, remove the starter key and disengage
the pto;
• Brake the tractor and make sure it is unable to move;
• Lift the implement by means of the lift links in a flat place
where it cannot slip;
• Operate the mowing bar, checking that there are no
persons or animals in the vicinity;
• Wash the mowing bar with a jet of pressurized water,
standing at least 5 feet away from the implement;
• Check the condition of the cutters;
• When the mowing bar is dry, oil the cutters with very
viscous oil;
• Operate the mowing bar for a few seconds, checking that
there are no persons or animals in the vicinity;
• Switch off the tractor, remove the starter key and disengage
the pto;
• Fit the guards over the cutters and outer skid (C Fig. 49)
Checking the clearance tolerance
Fig. 49
C
ATTENTION
It is absolutely essential to disengage the tractor
pto, lower the mowing machine, switch off the
tractor, ensure that this is at a complete standstill
and remove the key before servicing, adjusting
the implement for work. All assembly operations
must be carried out on a work bench.
Every 50 hours of operation, the clearance between the tooth
and upper blade guide must be checked. Too much
clearance allows material to enter the cutting blade, leading
to the possible breakage of the various parts of the cutting
blade, as well as compromising cutting quality. Too little
clearance creates excessive sliding friction on the blade as
it slides, leading to the possible breaking of the tooth holding
bar, the blade head or parts of the hinge. The check is to run
between the tooth and the upper blade guide. The optimal
clearance is determined by the passing of a shim (Fig. 50).
If a shim cannot pass between the tooth and upper blade
guide, a shim must be added (Fig. 53). If, on the other hand,
two coupled shim can pass (Fig. 51), a shim must be removed
in order to restore optimal clearance conditions.
Fig. 51
Fig. 50
1.18 inches
11.9 inches
thicknes ~0.04 inches (1mm)
1.18 inches
11.9 inches
thicknes ~0.04 inches (1mm)
ONE SHIM (GH 13011510)
TWO SHIMS (GH 13011510)