40
Disconnecting
IMPORTANT: Depending on whether the machine is going to be left folded or unfolded, the machine should be
secure so it doesn’t move. If the machine is destined to be left folded ensure that the machine is safely secured
with wing locking pins and/or ratchet strap is fitted to ensure that the wings do not drop when the hydraulic hoses
are put into float or being disconnected. If the machine is destined to be left unfolded, ensure that the machine is
lowered fully to the ground and is resting on the machine skids.
With the tractor switched off and secured in position on level ground, relieve the hydraulic pressure from the
tractor by moving the hydraulic control levers/buttons back and forth several times.
SR460/620/820 machines feature quick release hydraulic couplers so they can be removed by first pushing in
and then pulling out the connections. When disconnecting the hoses to the tractor it is important to keep the
hoses, quick couplers and swivels free of contamination and dirt. Never disconnect a hydraulic hose and leave
the quick coupler end exposed. Utilise the coloured plastic caps supplied on the hoses to keep them
contaminant free. Ensure that the tractors hose ports are capped and clean before leaving the hydraulic hoses
with the machine. If any component is deemed dirty ensure that it is cleaned with some clean rag.
The electrical connections between the lights on the machine and the tractor can be removed similarly by pulling
on the connection. Like the hydraulic hoses, the electrical connections should be kept clean to ensure a reliable
connection and reduced corrosion.
4.4 Hitching & Unhitching The Machine
DANGER! Always switch off the tractor completely, place the transmission in park, and set the parking
brake before attempting to connect or disconnect the machine from the tractor
WARNING! Only use clevis or K80 drawbar hitches for connecting to the machine. Hook hitches should
not be used.
McConnel claims no responsibility to damages to operator, personnel or machine by a hook hitch being
used to trail.
4.4.1 Adjustable Pick-up Hitch
With tractors fitted with an adjustable pick-up hitch the machine can be rested on the skids and lifted by the
means of the tractor to the desired height. Then proceed to fit the hydraulic hoses as shown in Section 4.3.
4.4.2 Fixed Pick-up Hitch
Hitching
On tractors without an adjustable pick-up hitch option, the machine will be required to be adjusted using the
adjustable jack, or fixed stand with hydraulics to make the towing eye the same level as the hitch of the tractor.
Measuring between machine and tractor will be required.
This section of instructions are written on the assumption that the machine is being connected to the tractor
whilst it is being held up by the machine jack or stands.
To adjust the machine to the correct height:
4.4.2.1 On SR460 and SR620 machines, turn the handle on the jack to bring the tractor clevis and machine
towing eye to the correct height; see Figure 4.5.
4.4.2.2 On SR820 machines, ensuring that the machine stands are in their highest position, connect the
hydraulic hoses of the machine to the tractor.
4.4.2.3 On SR820 machines, ensuring the hoses are seated properly, enter the tractor cab and use the tractors
hydraulic control levers/buttons to completely fill the centre axle lift ram cylinders with oil. Raise and
lower the centre axle and repeat the process several times to remove any potential trapped air in the
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