2-26
9J577-0822
Hydraulic Installation
WARNING
The hydraulics consists of 3 separate circuits. Plumb the
circuits in the following order:
1.
Wing Fold Circuit - Yellow.
The Wing Fold Circuit
requires approximately 3 gallons of oil.
2.
Tooth Control - Blue and Purple.
The Tooth Control
Circuit requires approximately 1-1/2 gallons of oil.
3.
Lift Circuit - Green.
The Lift Circuit requires
approximately 2 gallons of oil.
Remove Fitting Caps prior to installing Fittings.
1. Route the hoses toward the center of the Frame to the
Drawbar attaching the hoses to the Frame with Twin
Hose Clamps where shown.
Continue routing the hoses down the center of the
Drawbar through the Hose Loops and Hose Holder
supports to the tractor.
2. Secure all hoses with tie wraps.
Tightening Procedure For JIC 37° Swivel Female Nuts
1. Check flare and seat for defects.
2. Lubricate the connection.
3. Install hoses without twists.
4. Hand tighten until connection bottoms.
5. Using 2 wrenches to prevent twisting, rotate the
swivel nut 2 wrench flats (1/3 turn).
6. For reassembly, follow the same procedure but
tighten only 1 wrench flat (1/6 turn).
Tightening Procedure For Swivel O-Ring Fittings
1. Lubricate O-ring and install the fitting until the metal
washer which backs up the O-ring contacts the face
of the boss.
2. Orient the fitting by turning counterclockwise up to
1 turn.
3. Tighten the lock nut using 50-60 foot pounds torque.
(See “Hydraulic Fitting Torque Specifications” on
page 4-2.)
Purging the Hydraulic Wing
Fold, Transport and Tooth
Control Cylinders
WARNING
CAUTION
The hydraulic system is not filled with oil and should be
purged of air before transporting and field operations.
Carefully hitch the Pulvi-Mulcher to the tractor and
connect the hydraulic wing fold hoses. Check to make
sure the tractor hydraulic reservoir is full of the
manufacturer’s recommended oil.
1. Unpin the end(s) of the wing fold cylinders, and
position them so the rod end can extend and retract
without contacting any frames or other parts. Connect
the cylinder hoses to the tractor and fully extend and
retract the cylinders 5 or 6 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.
2. If the cylinders are not working evenly or together,
fully extend the cylinders and continue to hold the
lever to purge any remaining air. Do not loosen any
hoses or fittings.
3. Recheck tractor reservoir to make sure it is within
operating limits.
4. The hydraulic wing fold system is equipped with
restrictors in the 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
Repeat the procedure for the Transport and Tooth
Control Circuit.
Escaping fluid under pressure can be nearly
invisible and have enough force to penetrate the
skin causing serious injury. Use a piece of
cardboard, rather than your hands, to search for
suspected leaks. Wear protective gloves & safety
glasses or goggles when working with hydraulic
systems.
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. Keep
all components (cylinders, hoses, fittings, etc.) in
good repair.
Restrictors are installed in the rod end of wing fold
cylinders to prevent uncontrolled dropping of
wings. Removal of the restrictors, or improper
installation can result in serious damage to
implement.
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