waratah HTH624C, Operator'S Manual

Page: 43 / 87

Operation—Clear Cut Harvesting
RR71361,00000F0 -19-16JUN08-1/1
AP88438,000010A -19-04DEC12-1/1
Delimbing
At this point the tree is ready to be delimbed which
involves rotating the base and feeding the stem through
the harvester head while obtaining the correct direction
of the butt. Once the butt has been positioned, the
remainder of the tree can be delimbed by using the
momentum of the harvester to assist the delimbing effort
of the harvester head.
Care must be exercised when swinging stems around,
not to allow contact with the operator’s structure and be
aware of tail swing which could foul other trees or stems.
•
Ensure the delimb knives are kept sharp and in form to
reduce the effort required to remove limbs.
•
The delimbing procedure is about balance and stem
control, which when perfected gives excellent results
and increases production.
•
Do not feed the stem through the harvester head while
the stem is facing the operator’s structure.
It is recommended to delimb the stem with the harvester
head only just high enough to position the butt and clear
objects. Operating the harvester head too high will result
in loss of control of the stem and also stem breakage.
Fall and Delimb
To improve delimbing, it is beneficial to feed the tree
through while falling, since the weight of the tree assists
this operation.
While the tree is falling, feed rollers can be activated, to
allow the tree to pass through the harvester head and
delimb. Once the feed rollers are activated the delimb
knives will automatically go into soft clamp mode allowing
the tree to pass through the harvester head.
Ensure the harvester head is kept to a minimum height in
this operation to reduce the impact on the harvester head
from the falling tree. To improve delimbing performance
rotate into the feed direction.
Due to the variation in tree weight from varying form,
an operator must be aware of the manufacturers
specifications in regard to the ability of the carrier to
handle safely the tree being processed.
XJ1
127323
—UN—04DEC12
2-2-2 053122
PN=43