Toro ProCore SR Series Service Manual page 78

Installation (Fig. 12)
1. If bearing was removed from bearing housing, install
new bearing into housing (Fig. 15):
A. Install a retaining ring into one of the grooves in
bearing housing. Make sure that retaining ring is
properly seated in groove.
B. Position bearing to bearing housing so bearing
flange orientation is correct. Install new bearing into
bearing housing by pressing on outer race of bear-
ing.
C. Install second retaining ring into bearing housing
groove to secure bearing. Make sure that retaining
ring is properly seated in housing groove.
2. Install components into bearing housing assembly:
A. If a removed crank arm included a drive sprocket,
install sprocket if it was removed (Fig. 14).
B. If both crank arms were removed from crank
shaft, use notes made during disassembly to proper-
ly orientate one of the crank arms (items 6 or 13) and
slide onto crank shaft. Install locking plate and crank
shaft nut onto crank shaft threads to secure crank
arm to crank shaft. Make sure that nut shoulder fits
into hole in locking plate.
C. Apply antiseize lubricant liberally to crank shaft
(item 12). Slide crank shaft with attached crank arm
into bearing housing. Do not tighten bearing set
screws (item 15) at this time.
D. If sprocket is attached to either of the removed
crank arms, install spacer to both sides of bearing
housing (Fig. 13).
E. Using notes made during disassembly, properly
orientate second crank arm (items 6 or 13) and slide
onto crank shaft.
F. Place four (4) dowel pin bullets (item 5) to each
crank arm.
G. Install locking plate and crank shaft nut onto
crank shaft threads to secure crank arm to crank
shaft. Make sure that shoulder on nut fits into hole in
locking plate.
H. Secure bearing housing assembly in a vise and
fully tighten crank shaft nuts to secure assembly.
Torque nuts to 1200 ft- -lb (1627 N- -m).
3. Position bearing housing assembly to aerator frame.
Install two (2) cap screws and lock nuts to secure bear-
ing housing assembly to coring head frame.
Coring Head (SR48 & SR72)
4
1. Bearing housing
2. Retaining ring
4. Install crank pins and connecting rods on both sides
of bearing housing (see Connecting Rod Installation in
this section).
5. Rotate coring crankshaft to allow access to nuts
(items 2 and 9) that secure crank arms and connecting
rods on both sides of crankshaft bearing housing.
6. Insert block of wood between aerator frame and con-
necting rod to prevent the crankshaft from turning.
Torque hex nuts (item 2) that secure crank pins to 950
ft- -lb (1288 N- -m). Torque crank shaft nuts (item 9) to
1200 ft- -lb (1627 N- -m).
7. Tighten set screws to secure ball bearing flange to
crankshaft.
8. After assembly, rotate coring crankshaft by hand to
make sure that no binding occurs.
IMPORTANT: When installing coring head drive
chains, make sure that one of the chains is installed
and properly tensioned before installing second
chain.
9. If removed, install coring head drive chain (see Cor-
ing Head Drive Assembly in this section). Make sure that
chain is properly tensioned.
10.Lower and secure back cover.
Page 5 - - 16
2
1
3
3
2
Figure 15
3. Set screw
4. Ball bearing
ProCore SR Series