Allied 795 TSL, Operator And Parts Manual

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TSL General Note and Instructions - 795 Loader
TSL General Note and Instructions
1. The true self leveling system (TSL) utilizes mechanical linkages to maintain bucket level
while raising and lowering. The pivot plate weldment, leveling 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.
2. 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 fully 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 quickattach
contacts the dump stop. If the loader is lowered with the bucket fully rolled back, oil from
the bucket shaft side will be bypassed at high pressure to the bucket piston side and the lift
piston side will provide makeup 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.
3. The extra bucket stroke length allows for the bucket to be dumped to approximately 90° 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.
4. 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° 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.
5. 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.