17
OPERATION
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 chipper to the tractor but do not
attach the driveline.
DRIVELINE DIMENSIONS
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 machine input shaft.
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. When cutting the driveline, follow this procedure:
a. Subtract the machine dimension (A) from the uncut
driveline dimension (B) or (B-A). This dimension
determines how much too long the driveline is.
b. Add another inch (25 mm) to the dimension to be sure
it doesn't bottom out, to determine (C) the cut off dimension. CUT OFF DIMENSION
c. Use a hacksaw to cut dimension (C) from both
ends. Cut both the plastic tubes and the
metal cores.
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.
SHORTENING
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