7
Fitting the PTO shaft
Parts needed for this procedure:
1
PTO shaft
Procedure
1. Move the tractor and aerator to a level surface.
2. Raise the aerator completely and fully retract the
hydraulic top link cylinder or upper link (Figure 11).
Figure 11
3. Measure the distance from the locking groove on the
end of the tractor PTO shaft to the locking groove
on the aerator gearbox PTO shaft (Figure 12).
Record this distance. Example: 26.5 inches (67 cm).
Figure 12
1.
Measure here
2.
Locking groove
4. Lower the aerator to the ground and fully extend the
hydraulic top link cylinder or upper link (Figure 13).
Figure 13
5. Measure the distance from the locking groove on the
end of the tractor PTO shaft to the locking groove
on the aerator gearbox PTO shaft (Figure 14).
Record this distance. Example: 27.5 inches (70 cm).
Figure 14
1.
Measure here
2.
Locking groove
6. On the PTO shaft, measure the distance from the
center of locking pin ball on one end to the center of
the locking pin on the other end (Figure 15). Record
this distance. Example: 32 inches (81 cm).
Figure 15
1.
Measure here
7. Using the smaller of the two measurements in
Figure 14 and Figure 12, subtract that distance from
the distance in Figure 15. Example 32 (81 cm) inches
minus 26.5 inches (67 cm) equals 5.5 inches (14 cm).
8. The example measurements show that the shaft is
5.5 inches too long. Add an extra 1/2 inch (1.2 cm)
to be sure that the PTO shaft will not bottom out
when the aerator is lifted to its highest position.
Example: 5.50 inches (14 cm) plus 1/2 inch (1.2 cm)
equals 6.00 inches (15 cm).
14
