Removal (Fig. 12)
Position aerator on a firm, level surface. If attached
1.
to tractor, disengage PTO, apply tractor parking brake,
stop engine and remove key from the ignition switch.
1
2.
Remove rear hood.
3
2
3.
If bearing housing for #1 and #2 stomper arms is to
be removed, remove coring head drive belt (see Coring
Head Drive Belt Removal in this section).
WARNING
Figure 13
1.
2.
Crankshaft driven pulley
#1 crankshaft position
3. #8 crankshaft position
As crankshaft components are removed from
machine, the crankshaft will become out of bal-
ance and may rotate quickly, creating pinch
points and potential for personal injury. Be cau-
tious when disassembling the coring crankshaft.
150
(204
to 170 ft−lb
to 230 N−m)
1
2
4.
Remove stomper arms and couplings on both sides
3
4
of bearing housing that is to be removed (see Stomper
Arm Removal in this section).
8
7
5.
Drive spring pins (item 11) from bearing housing and
coring head frame.
6.
Support bearing housing assembly to prevent it from
6
falling. Remove fasteners that secure bearing housing
assembly to coring head frame. Remove bearing hous-
ing assembly from machine.
5
70
to 80 ft−lb
4
7.
Disassemble bearing housing assembly:
(95
to 108 N−m)
A. Remove cap screw (item 1) and flat washer (item
Figure 14
2)
karm journals are positioned 180o from each other.
that fasten crankarms together. Note that cran-
1.
2.
3.
4.
Coupling (#3 shown)
Iso mount (2 used)
Coupling (#2 shown)
Cap screw (2 used)
5.
6.
7.
8.
Coupling plate
Cap screw (4 used)
Lock nut (2 used)
Washer (2 used)
B. Slide crankarms from bearing housing.
C. If necessary, remove bearings and bearing
spacer from bearing housing.
1
8.
If necessary, remove counterweight from driven
Loctite #242
pulley (Fig. 15).
2
Installation (Fig. 12)
1.
Install new bearings if they were removed from bear-
ing housing:
3
A. Install new bearing into one side of housing by
pressing on outer race of bearing.
B. Position bearing spacer into bearing housing.
Figure 15
1.
2.
Driven pulley
Counterweight
3.
Flange head screw
C. Install second new bearing into housing by press-
ing on outer race of bearing. Make sure that spacer is
centered between bearings.
ProCore 864/1298
Page 4 − 17
Coring Head
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro ProCore 1298, Toro ProCore 864 |
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|
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| Language | English |
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