Landoll 9630 Field Cultivator - Manual (Page 113)

OPERATION AND MAINTENANCE
4-3
Hydraulic Fold System
The Field Cultivator is equipped with a hydraulic fold
system to raise and lower the wing frames for narrow
transport.

WARNING
1. Be sure the fold system is fully charged with
hydraulic oil before attempting to fold/unfold the unit.
Air in the system can allow uncontrolled dropping of
the wing frames causing serious personal injury or
machine damage. The system needs to be charged
with oil initially and any time the system opened for
repair such as cylinder, hose, or fitting
replacement/repair.
2. To charge the system, unpin the end(s) of the fold
cylinders, and position them so they can extend and
retract without contacting any frames or other parts.
Check the tractor hydraulic fluid level to make sure it
is full of the manufacturer’s recommended hydraulic
fluid. Connect the hydraulic fold and lift hoses to the
tractor. Fully extend the lift cylinders and raise the
implement. Extend and retract the fold cylinders
several times. The fold cylinder rod travel should be
smooth and positive when all air has been purged
from the system. Due to large amounts of hydraulic
oil required, recheck the tractor fluid level to make
sure it is within proper operating limits. Reconnect
the fold cylinder pins the wings.
3. The hydraulic fold system is equipped with restrictors
in the cylinders to prevent uncontrolled falling of wing
frames when folding/unfolding. Removal or improper
assembly of these restrictors can cause the machine
to fold improperly and result in serious machine
damage.
Escaping hydraulic fluid can cause serious
personnel injury. Relieve system pressure before
repairing, adjusting, or disconnecting. Wear
proper hand and eye protection when searching
for leaks. Use cardboard instead of hands (See
Figure 4-1.) Keep all components (cylinders,
hoses, fittings, etc.) in good repair.