Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 33 -
6.2.
Adjusting the sequence of rotor lifting
DUO
in-line rake's rotors can be adjusted for proper lifting sequence. This is performed with
adjustable chokes located on the rake's linkage. Chokes are part of the rake's hydraulics and are
used to control oil flow for powering each of four rake cylinders. Winding down the choke knob
results in reducing oil flow rate and therefore slowing down the operation of the corresponding
choke.
NOTICE:
Be careful when adjusting the chokes as even subtle modifications of choke settings will
cause significant difference in rotor lifting speed.
Fig. 39.
Location of adjustable chokes
Choke 1
Used to control the rear rotor lifting and lowering speed. Winding down results in reducing the
speed of rear rotor lifting and lowering. Winding up results in increasing the speed.
Choke 2
Used to control the rear rotor locking speed in horizontal position. Winding down results in
reducing the rear rotor following locking mechanism speed. Winding up results in increasing the
speed.
Choke 3
Used to control the front rotor lifting speed. Winding down results in reducing the front rotor lifting
and lowering speed. Winding up results in increasing the speed.
Choke 4
Used to control the front lifted drawbar speed. Winding down results in reducing the drawbar lifting
and lowering speed. Winding up results in increasing the speed.
2
1
4
3