Landoll 6230 Disc Manuel d'utilisateur télécharger pdf (Page 73)

OPERATION AND MAINTENANCE

4-5

Hydraulic Fold System

1. The disc is equipped with a hydraulic fold system to

raise and lower the wing frames for narrow transport.

2. Be sure the 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 has been opened for

repair such as cylinder, hose, or fitting

replacement/repair.

3. To charge the system, carefully hitch the disc to the

tractor. 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 cylinder hoses to the tractor and fully

extend and retract the cylinders several times. The

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.

4. The hydraulic fold system is equipped with restrictors

in the rod end of cylinders to prevent uncontrolled

falling of wing frames when unfolding. Removal or

improper assembly of these restrictors can cause the

machine to fold improperly and result in serious

machine damage.



WARNING

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 4-2.) Keep all components (cylinders,

hoses, fittings, etc.) in good repair.

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Landoll 6230 Disc Manuel d'utilisateur Page 73