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OPERATION AND MAINTENANCE
Hydraulic Maintenance
1. Check the tractor hydraulic fluid level per tractor
owner's manual and after any leakage. Check fluid
level with the cylinders in the retracted position.
2. If a cylinder or valve leaks, before disassembling the
part, contact Landoll Service at 1-800-428-5655
for further instructions. Any time a cylinder is
opened up, or whenever any seal replacement is
necessary, it is advisable to clean all parts and
replace all seals. Seal kits are available from your
Landoll dealer.
3. Check all hydraulic hoses weekly. Look for binding or
cracking. Replace all worn or defective parts
immediately.
IMPORTANT
Unfold, lower the unit to the ground, and relieve
hydraulic pressure before attempting to service any
hydraulic component.
4. Transport locks are provided to hold the implement in
a raised position. Do not attempt to perform any
service work under the implement without first
installing the transport locks. Before servicing any
hydraulic component, lower the implement to the
ground and relieve all system pressure. If a hydraulic
component is disconnected, repaired, or replaced, it
will be necessary to purge the system of air before
operation. See
"Hydraulic Lift System" on
page 4-3
and
"Hydraulic Fold System" on
page 4-5
on how to purge the hydraulic systems.
Transport
1. Check and follow all federal, state, and local
requirements before transporting the 7550.
2. The 7550 should be transported only by tractor
required for field operation. The implement weight
should not exceed more than 1.5 times the tractor
weight. Maximum transport speed for the 7550 is 20
mph for the implement and is designated on the
speed identification symbol located on the front of the
implement
(See Figure
4-20
4-20.).
Excessive speed may result in loss of control of
the tractor and implement, reduced braking
ability, or failure of the implement tire or
structure. Do not exceed the implement
maximum specified ground speed regardless of
the capability of the maximum tractor speed.
3. When towing equipment in combination, the
maximum equipment ground speed shall be limited
to the lowest specified ground speed of any of the
towed implements.
4. Maximum transport speed shall be the lesser of
travel speed specified in the operator's manual,
speed identification symbol, information sign of
towed equipment, or limit of road conditions.
5. Slow down when driving on rough roads. Reduce
speed when turning, or on curves and slopes to
avoid tipping. Equipment altered other than the place
of manufacture may reduce the maximum transport
speed. Additional weight, added tanks, harrowing
attachments, etc. may reduce implement load
carrying capabilities.
6. A safety chain is provided with the implement to
insure safe transport.
a. The safety chain should have a tensile strength
equal to or greater than the gross weight of the
implement. The chain is attached to the lower
hitch clevis hole with two flat washers between
the clamp plates to assure a tight connection.
Always use a 1" diameter Grade 8 bolt for this
connection.
b. Attach the safety chain to the tractor drawbar
(See Figure
4-20.) Provide only enough slack in
the chain for turning. Do not use an intermediate
chain support as the attaching point for the chain
on the tractor. Do not pull the implement by the
safety chain.
CAUTION
F-987-0519
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