Tarter RC306BL Operation And Assembly Manual page 18

M O D I F Y I N G P T O
SIZING THE PTO SHAFT
Refer to Figure 1
1. Detach the driveline from tractor PTO shaft and
pull outer and inner drivelines apart.
2. Reattach outer driveline to tractor PTO shaft.
Pull on inner and outer drivelines to ensure
universal joints are properly secured.
3. Hold inner and outer drivelines parallel to each
other:
a. Measure 1" ("B" dimension) back from
outer driveline universal joint shield and
make a mark at this location on the inner
driveline shield.
b. Measure 1" ("B" dimension) back from
inner driveline universal joint shield and
make a mark at this location on the outer
driveline shield.
4. Remove driveline from tractor and gearbox
shafts.
5. Measure from end of inner shield to scribed
mark ("X" dimension). Cut off inner shield at the
mark. Cut same amount off the inner shaft ("X1"
dimension).
6. Measure from end of outer shield to scribed
mark ("Y" dimension). Cut off outer shield at the
mark. Cut same amount off the outer shaft ("Y1"
dimension).
7. Remove all burrs.
8. Continue with "Check Driveline Maximum
Length".
X
X1
TRACTOR END
B
Figure 1 - Driveline Shortening
18
A
B
INNER DRIVELINE
INNER SHAFT
IMPLEMENT END
INNER SHIELD
Y1
UNIVERSAL
JOINT SHIELD
OUTER DRIVELINE
Y
OUTER SHAFT
OUTER SHIELD
CHECK DRIVELINE MAXIMUM
LENGTH
Refer to Figure 2
Make sure driveline's collapsible length is
acceptable.
The driveline maximum allowable length must,
when fully extended, have a minimum overlap of
the profile tubes by not less than 1/3 the free length
with both inner and outer profile tubes being of
equal length.
1. Apply multi-purpose grease to the inside of the
outer shaft and reassemble the driveline.
2. Assemble the two driveline profiles together
with 1/3 of the profile tubes overlapping as
shown below. Once assembled, measure and
record the maximum allowable length for future
reference.
FREE LENGTH
1/3 1/3
OUTER PROFILE
TRACTOR END
MAXIMUM ALLOWABLE LENGTH
Outer Shielding has been removed for clarity.
Figure 2 - Driveline Maximum Extended Length
3. Attach inner driveline yoke to the cutter's
gearbox shaft. Attach outer driveline yoke to the
tractor's PTO shaft.
4. Move yoke ends of driveline back and forth to
insure they are secured to the tractor and cutter
shafts. Reattach any end that is loose.
IMPORTANT: Small chains are supplied with the
driveline. They must be attached to the inner
and outer driveline shields and to the cutter and
tractor to restrict shield rotation.
5. Hook driveline safety chain on the tractor end of
driveline to cutter frame. Re-latch safety chain
to the driveline shield.
IMPLEMENT END
1/3 1/3 1/3
OVERLAP
INNER PROFILE
FREE LENGTH