Toro ProCore SR Series Service Manual page 109

Removal (Fig. 18)
1. Position aerator on a firm, level surface. If aerator is
attached to tractor, disengage PTO, apply tractor park-
ing brake, stop engine and remove key from the ignition
switch.
2. Remove screens from aerator frame (see Covers
Removal in the Service and Repairs section of Chapter
3 -- Chassis).
3. Drain lubricant from gearbox.
4. Disconnect PTO driveshaft from gearbox input shaft
(see PTO Driveshaft Removal in the Service and Re-
pairs section of Chapter 3 -- Chassis).
5. Remove four (4) cap screws, lock washers and flat
washers that secure driveshaft shield (item 20) to gear-
box. Remove shield.
6. Remove drive chain, sprocket and sprocket hub from
both gearbox output shafts (see Coring Head Drive Dis-
assembly in this section).
7. Remove saddle bolts (item 10) that secure gearbox
flanges to frame.
8. Remove four (4) cap screws and lock washers that
secure gearbox to aerator frame.
CAUTION
To prevent personal injury, make sure that gear-
box is supported as it is removed from the ma-
chine. Gearbox weighs approximately 220
pounds (100 kg).
NOTE: For gearbox disassembly and assembly infor-
mation, refer to the Service and Repairs section of
Chapter 7 -- Gearbox Service.
Installation (Fig. 18)
IMPORTANT: If a gearbox is incorrectly assembled
or installed (e.g. output shaft installed into gearbox
in reverse direction or gearbox placed on frame up-
side down), there is a possibility that gearbox out-
put shaft rotation will be incorrect for proper aerator
operation. After placing the gearbox on the frame,
make sure that rotation of the input shaft results in
the correct output shaft rotation direction. Figure 19
shows correct shaft rotation direction for the gear-
box shafts. If rotation is incorrect, check gearbox
assembly and installation before proceeding with
installation procedure.
ProCore SR Series
To prevent personal injury, make sure that gear-
box is supported as it is installed to the machine.
Gearbox weighs approximately 220 pounds (100
kg).
1. Position gearbox to aerator frame. Secure gearbox
to frame with four (4) cap screws and lock washers.
2. Install and tighten saddle bolts (item 10) to frame and
gearbox flanges.
3. Install drive chain, sprocket and sprocket hub to both
gearbox output shafts (see Coring Head Drive Assem-
bly in this section). Make sure that drive chain is properly
adjusted after assembly.
4. Position driveshaft shield (item 20) to gearbox and
secure with four (4) cap screws, lock washers and flat
washers.
5. Connect PTO driveshaft to gearbox input shaft (see
PTO Driveshaft Installation in the Service and Repairs
section of Chapter 3 -- Chassis).
6. Fill gearbox with proper lubricant (see Operator's
Manual).
7. Install screens to aerator (see Covers Installation in
the Service and Repairs section of Chapter 3 -- Chas-
sis).
RIGHT
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CAUTION
FRONT
Figure 19
Coring Head (SR75)