Service Manual

ProCore 864/1298 Page 4 − 13 Coring Head
Removal (Fig. 7)
1. Position aerator on a firm, level surface. If attached
to tractor, disengage PTO, apply tractor parking brake,
stop engine and remove key from the ignition switch.
2. Remove rear hood.
3. For stomper arm that is to be removed, remove two
(2) flange nuts and hardened D washers that secure ro-
tolink damper to coring head frame (Fig. 9) (see Rotolink
Damper Assemblies in this section).
WARNING
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.
4. If an outside stomper arm is to be removed:
A. If #1 (pulley side) stomper arm is being removed,
remove coring head drive belt (see Coring Head
Drive Belt Removal in this section).
B. Remove cap screw and flat washer that retain
stomper arm to coring crankshaft.
C. If #8 (final) stomper arm is being removed from a
ProCore 864, remove counter weight (item 3, Fig.
10) from coring crankshaft.
D. Support stomper arm assembly to prevent it from
falling during removal. Slide stomper arm from cor-
ing crankshaft. Carefully lower stomper arm assem-
bly from coring head frame.
5. If an inside stomper arm is to be removed:
A. Remove fasteners that secure coupling plate to
coupling on stomper arm to be removed (Fig. 11).
B. Remove cap screw and flat washer that secures
coupling and stomper arm to coring crankshaft.
C. Slide coupling from coring crankshaft. Locate
and retrieve square key.
D. Support stomper arm assembly to prevent it from
falling during removal. Slide stomper arm from cor-
ing crankshaft. Carefully lower stomper arm assem-
bly from coring head frame.
6. If necessary, remove ball bearings, bearing spacer
and retaining ring from stomper arm.
1. Rotolink damper
2. D washer (2 used)
3. Flange nut (2 used)
4. Stomper arm
Figure 9
2
3
4
1
1. Stomper arm (#8)
2. Crankarm
3. Counter weight
Figure 10
1
2
3
PROCORE 864
Coring Head