Reddi-Arm Operator’s Manual
Mandako Agri Marketing (2010) Ltd.
Page 26
3.5 DRIVELINE DIMENSION
A PTO driveline is supplied with the machine. To
accompany the variety of 3 point hitch geometry available
today, the driveline can be too long for most machines or
too short for others. It is very important that the driveline
be free to telescope but not to bottom out when going
through its working range. If the driveline bottoms out,
the bearings on both the machine and tractor PTO shaft
will be overloaded and fail in a short time.
1.
To determine the proper length of the driveline, follow
this procedure:
a. Clear the area of bystanders, especially small
children.
b. Attach the Reddi-Arm to the tractor (see section
5.8) but do not attach the driveline.
c. Raise the machine until the input shaft is level
with the tractor PTO shaft.
d.
Measure the dimension between the locking
grooves on the tractor PTO shaft and the
attaching bolt on the Reddi-Arm.
e. Measure the same dimensions on the
compressed driveline.
f. If the compressed driveline dimension exceeds
the machine dimension, the driveline will have to
be cut.
2. To determine the proper length of the driveline, follow
this procedure:
a. Subtract the machine dimension (A) from the
uncut driveline dimension (B) or (B-A). This
difference determines the driveline excess (Fig.
6).
b. Add another 2 inches (50 mm) to this difference
to be sure it doesn’t bottom out. This determines
the cut off dimension (C).
c.
Use a hacksaw to cut dimension (C) from both
ends. Cut both the plastic tubes and the metal
cores (Fig. 7).
d. Use a file to remove the burrs from the edges
that were cut.
e. Assemble the 2 ends of the shaft.
f. Make sure the shaft can telescope freely. If it
does not, separate the 2 parts and inspect for
burrs or cuttings on the shaft ends. Be sure it
telescopes freely before installing.
g. Remeasure distance “A” in Fig. 8 to verify
collapsed length.
Fig. 6 Driveline Dimensions
Fig. 7 Cut-Off Dimension
Fig. 8 Shortening
