Allied Telesis S795 TSL - Manual (Page 22)

General Notes and Instructions to the Operator
Regarding ALLIED TSL Loader Operations
The tve self levelling system (TSL) utilizes mechanical linkages to
maintain bucket level while raising and lowering. The pivot plate
weldment, levelling tubes and linkages have been developed to ensure
that the bucket remains at the same position throughout its range of
motion. This feature is standard with 2.50” and 3.00” diameter bucket
cylinders.
The TSL system incorporates a relief and anticavitation manifold to
provide extra dump at ground and rollback at full lift height. This feature is
available on 3.00” bucket cylinders only. If the loader is raised with the
bucket fuily dumped, oil from the bucket piston side will be bypassed at
high pressure to the bucket shaft side and the lift shaft side as the quick
attach contacts the dump stop, if the ioader is iowered with the bucket
fuiiy roiled back, oil from the bucket shaft side will be bypassed at high
pressure to the bucket piston side and makeup will be provided by the lift
piston side as the quick attach contact the rollback stop. Note that these
two conditions are likely to occur intermittently and although the pump will
be forced to supply oil at a higher pressure, no damage to the loader
components will occur. It is, however, recommended to avoid the above
situations and keep the bucket somewhat level while raising or lowering
the loader for smoother operation.
The extra bucket stroke length allows for the bucket to be dumped to
approximately 90 degrees at ground. This allows for bucket assist when
traction is minimal. If the loader is raised from this position, the bucket will
retract as the quick attach contacts the dump stop and the circuit goes
through relief as described in note 2.
Extra bucket retraction allows for the bucket to be rolled back as the
loader raises. The TSL feature maintains the bucket level, but as required
the bucket can be manually rolled back approximately 20 degrees to allow
for increased bucket capacity. If the loader is lowered from this position,
the bucket will extend as the quick attach contacts the rollback stop and
the circuit goes through relief as described in note 2.
The relief valve is factory set at 3250 PSI cracking pressure and is
capable of bypassing 10-15 GPM. If loader lock-up should occur due to a
low tractor relief setting, higher inlet flows or return line restrictions, the
relief valve may be backed off slightly until the lock-up condition is
overcome (counterclockwise turn of set-screw). Contact the factory for
further instructions.
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