4-4
F-733-1114
OPERATION AND MAINTENANCE
2.
The hydraulic system is not filled with oil and should
be purged of air before transporting and field
operations. Carefully hitch the disc to the tractor and
connect the hydraulic lift hoses. Check to make sure
the tractor hydraulic reservoir is full of the
manufacturer’s recommended oil. Slowly raise the
machine, and continue to hold the hydraulic lever
until all lift cylinders are fully extended. Lower and
raise the unit to verify that all cylinders are working
simultaneously throughout the stroke. If the cylinders
are not working evenly or together, fully extend the lift
cylinders and continue to hold the lever to purge any
remaining air. Do not loosen any hoses or fittings.
Recheck tractor reservoir to make sure it is within
operating limits.
3.
Always fully extend the cylinders and hold the lever to
ensure the cylinders are rephased before starting
any field operation. This will keep all cylinders in time
and frame sections level when operating.
4.
The transport locks for the hydraulic lift system are
plumbed into the fold system. During folding they are
activated to lock the machine up in the fully raised
position, while unfolding the locks are released
permitting the machine to be lowered.
NOTE
If performing service or repair work, activate the fold to
engage the transport locks, or lower the machine down to
the ground and relieve hydraulic pressure.
Figure 4-3: Installed Transport Locks
Figure 4-4: Stored Transport Locks
6250-transport-extended
3-1/4 X 8 HYDRAULIC
CYLINDER
TRANSPORT
LOCK
3-1/2 X 8 HYDRAULIC
CYLINDER
6250-transport-lock-retracted
3-1/4 X 8 HYDRAULIC
CYLINDER
TRANSPORT
LOCK
3-1/2 X 8 HYDRAULIC
CYLINDER
Summary of Contents for 6250
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