Connecting The Hydraulic Top Link (Models Sr48, Sr54, Sr70, Sr72 And Sr75) - Toro 09930 Operator's Manual

when to use the upper mounting holes, refer to
Connecting the PTO Shaft.
SR54 and SR54-S Aerators only
Note: The hitch pins and lynch pins are shipped
installed on the SR54 and SR54-S Aerators.
4. Secure the lower link arms to the aerator mounting
pins with lynch pins (Figure 3).
1. Aerator mounting pin
2. Lower link
SR48, SR70, SR70-S, SR72 and SR75 Aerators
only
5. Secure the lower link arms to the aerator mounting
brackets with hitch pins and lynch pins (Figure 4).
1. Hitch pin
2. Aerator mounting bracket
Figure 3
3. Lynch pin
Figure 4
3. Lower link
4. Lynch pin
3
Connecting the
Hydraulic Top Link
(Models SR48, SR54, SR70,
SR72 and SR75)
Parts needed for this procedure:
1 Hydraulic top link
1 Hydraulic hose, 3–1/2 feet
1 Hydraulic hose, 2–1/2 feet
2 Extension bracket
1 Rotational bracket
2 Hose quick couplings
Procedure
Note: Make sure the supplied couplings are correct for
the tractor. If not, it will be necessary to contact the
tractor manufacturer to obtain the correct couplings.
The tractor must be equipped with a double acting spool
valve with an operator control lever and two 1/2 inch
(12.7 mm) quick-release couplings at the rear of the
tractor. Two quick couplings have been provided to fit
to the hydraulic top link hoses (1/2–14 NPTF hose end
thread size).
This section will be used to install the hoses and
determine the need for the extension or rotation blocks.
This information will help to determine the depth range
of the aerator.
1. Secure the connecting link end of the hydraulic top
link to the tractor with the pins supplied with the
tractor (Figure 5). Position the hydraulic top link so
the rod end is toward the aerator. The cylinder ports
should be positioned toward the tractor's auxiliary
power hydraulics.
Note: If the hydraulic cylinder must be positioned
with the ports facing upward, use the rotational block
instead of the standard mounting block to reposition
the cylinder (Figure 5). A 90 degree hydraulic fitting
may be used instead of the rotational block (fittings
are not supplied).
Install the rotational block as follows:
A. Remove the cotter pin and pin securing
the standard connecting link to the cylinder
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