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ROTOR SPEED (ROTATIONAL FREQUENCY)
The
EL 142
is fitted with a speed gearbox which adapt the rotor speed
(rotational frequency)
to the working
conditions.
To change the PTO speed
(rotational frequency)
invert or replace the sets of matching gearwheels located at the
rear of the gearbox. The machine is standard equipped with 2 sets of gearwheels.
To invert the pinions proceed as follows. Tilt the machine forward to avoid oil leaking out of the gearbox when
removing the cover.
To do this :
- uncouple the PTO shaft
- shorten the turn buckle
- raise the machine in order to obtain a satisfactory angle
- remove bolts (U) from cover plate (V) and pull the cover and gearwheel assembly out of the gearbox (photo 13),
- invert the set of matching gears (A and B) or replace it by the set (C and D), according to the desired rotor speed
(rotational frequency)
(photo 14),
- always store the non used set of matching gears inside the gearbox by placing gearwheel (D) on the rear PTO
shaft and gearwheel (C) on the cover plate (photo 14),
- reinstall the cover plate making sure to position the O-ring (E) in its groove correctly (photo 14).
*
Ex-Works setting
Recommended PTO speed
(rotational frequency)
Rotor speed (rotational frequency) chart EL 142
in rpm (
min
-1
) :
*
750 rpm (
min
-1
)
183
214
-
273
1000
rpm (
min
-1
)
244
286
191
364
1st gear set
2nd gear set
26 24
24 26 29 21 21 29
Position of
gears
P.T.O.
speed
(rotational
frequency)
13
14
