McHale
R62-72 & R68-78
Twin-Rotor Rake
30
5.3 Attaching to lower linkage
Ensure both lower link arms are adjusted equally in height. If you are using tractor quick
couplers, secure the lower link balls onto the CAT 2 headstock, using linch pins. Line
up the tractor with the machine and reverse slowly until the lower link arms are aligned
under the link-arm pins on the machine CAT 2 headstock. Then, raise the lower link
arms until they are latched securely on the quick couplers. If quick couplers are not
being used, secure the lower link arms directly to the headstock pins, using linch pins.
The lower link stabilisers will have to be loosened to make above connections and then
tightened to ensure there is no lateral movement. Attach the safety chain to the tractor.
Then, connect the hydraulic hose (with tap) to a single acting hydraulic supply with float
function. Connect the other two lift-ram hoses to a double-acting hydraulic function.
The PTO shaft may have to be altered the first time it is fitted to a specific tractor. First,
fit the PTO shaft to the machine and then check if the PTO can be connected to tractor
stub. If not, then the PTO shaft is too long and must be altered.
Once the machine is attached to the tractor with all connections secured, the lower link
arms should be adjusted and set such that the main central frame (and curtain) is
horizontal and level. The stand can then be moved from the storage position to the
transport position by retracting the spring loaded pin and rotating it up against the
underside of the drawbar until the pin re-engages. Always ensure the pin is positively
engaged in the stand, in either position. A swivelling headstock provides steering to the
back wheels, allowing the machine to automatically track the movements of the tractor.
When the machine is being removed from the tractor, first lower the leg stand and
secure it in the storage position. Lower the lower link arms until the leg stand rests on
the ground.
After all hydraulic pressure is released, disconnect all hydraulic lines from the tractor.
Disconnect the safety chain, lift-latch pull cords, lighting socket and any other
connections between the machine and the tractor. Finally disconnect the PTO shaft
followed by the lower link arms and drive away from the machine.
5.4 Attaching the machine to a 540 rpm PTO
All mechanical functions are related to the correct PTO speed. Follow the instructions
as supplied with the PTO unit for correct assembling of the PTO shaft to the tractor.
(See ‘PTO shaft adjustment & maintenance’)
. Ensure PTO cover guards are prevented
from rotating, by securing the chain to the tractor.
WARNING: Measure distance between PTO stub shafts first
Never connect a PTO shaft on a new machine/tractor combination
without first measuring the shortest distance between PTO stub shafts,
otherwise severe damage can occur.