2131 Wing Coulter Chisel User Manual

4-4 F-721-0513 Edition
OPERATION AND MAINTENANCE
Hydraulic Fold System
1. The 2131 Wing Coulter Chisel is equipped with a
hydraulic fold system to raise and lower the wing
frames for narrow tran sport.
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 syste m has been opened for
repair such as cylinder, hose, or fitting
replacement/repair.
3. To charge the system, carefully hitch the coulter
chisel 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 manufac tur er’s recommended hydr au lic
fluid. Connect the cylinder hoses to the tractor and
fully extend and retract the cylinders severa l times.
The cylinder rod travel should be smooth and
positive when all air has been purged from the
system. Due to larg e am oun ts of hydrau lic oil
required, recheck the tractor fluid level to make sure
it is within proper operating limits.
4. The hydraulic fold system is equipped with restri ctors
in the rod end of cylind er s to pr event uncontro lled
falling of wing frames when unfolding. Removal or
improper assembly of th ese restrictors can cause the
machine to fold improperly and result in serious
machine damag e.

WARNING
Figure 4-4: Hydraulic Leak Detection
Escaping hydraulic fluid can cause serious
personnel injury. relieve system pres sure before
repairing, adjusting, or disconnecting. Wear
proper hand and eye protection when searching
for leaks. Use cardboard instead of hands (See
Figure 4-4.) Keep all components (cylinders,
hoses, fittings, etc.) in good repair.
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