Toomey Earthmovers 4500B, Руководство пользователя

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4500B USER HANDBOOK
Page 33
5 Using the Scraper
5.1 Coupling/Uncoupling Scraper Hitch
The hitching and unhitching operations should be done on flat firm level ground in a well-lit place
with no other vehicles or people around. It is important that anybody connecting or
disconnecting the scraper is familiar with the tractor controls. Improper operations could cause
damage to the equipment or injury to themselves or others.
If the operator needs an assistant to couple and uncouple the scraper, both people must wear
appropriate safety equipment, safety glasses, safety boots, high visibility clothing etc. The
operator must be aware of the where abouts of the assistant at all times.
Before commencing connection, make sure all tools required and positioned handy. Remove the
locking pin from the quick release latch and put with the tools. Before starting the engine, make
sure no one is close and sound the horn. Start the engine and allow it to idle. With the help of the
assistant position the tractor close enough to the scraper hitch so that the hoses can be
connected.
Warning, at no time should the assistant be between the tractor and the scraper. Make sure to
align the tractor straight onto the scraper otherwise it makes it difficult and dangerous to
connect.
Connect the hydraulic lines to the tractor so that the controls match the functions on the scraper.
Using coloured cable ties, or a common quantity of cable ties on hose ends and valve fittings to
identify where hoses go is common practice. Remember to clean the connectors with a clean rag
before connecting to the tractor.
When connecting for the first time, consult the hydraulic diagrams to identify which hoses on the
scraper control which functions and connect those to the valves on the tractor as desired. If
automation control systems are installed then this would dictate how the valves and functions on
the bucket would interact. The Scraper can also be optioned with electronically controlled valves
fitted and in this instances, electrical cables would be used to activate the functions of the bucket.
Consult your automation systems provider for advice with regard to the setup of these.
With timber dunnage under the cross beam tie down lugs lift the drawbar with the cushion hitch
cylinder until the pin in the swivel hitch is above the tags on the tractor drawbar. If the scraper is
being connected for the first time it may take some time for the hydraulic circuits to fill up with
oil and respond. Also keep in mind that the cylinders and hydraulic lines will hold approximately
100L of oil and the tractors hydraulic oil tank may need to be topped up during the initial
connection process.
With the assistant guiding the operator from a safe distance, back the tractor into the scraper
hitch. Once the hitch has engaged with the tractor towbar, the drawbar can be lowered, pressing
the hitch pin into place on the tractor towbar. The tractor should then be shut down while the
quick release latch is lowered and the pin and “R” clip assembled. Once the hitch is safely
engaged and tools removed and assistant clear, the tractor can be started up using the same
starting procedure previously mentioned. The scraper can now be raised and any support timbers
or stand can be removed.