Service Manual

Removal (Fig. 7)
1. Park the machine on a level surface, fully raise the
coring
head and stop the engine. Remove the key from
the ignition switch.
2. Raise lock–up brackets on each side of machine and
lower coring head until it rests on brackets.
3. Unlatch and remove coring head cover.
4. Remove coring head chain (see Coring Head Chain
Removal in this section).
5. Remove lock nut (item 21) and flat washer (item 22)
that secure tine arm to upper crank arm (item 34).
6. Remove lock nut (item 21) and flat washer (item 22)
that secure connecting rod to lower crank arm (item 29).
LOCTITE #271
STRAIGHT
CORING HEAD
CENTER
SIDE DOWN
BOLT HEAD TO
7. Slide tine arm from upper crank arm and connecting
Figure 8
rod from lower crank arm. Lower tine arm assembly out
bottom of coring frame.
8. Dissasemble tine arm using Figure 7 as a guide.
Installation (Fig. 7)
1. Assemble tine arm using Figures 7 and 8 as guides.
A. If stud (item 14) was removed from tine arm, ap-
ply Loctite #271 (red) (or equivalent) to threads of
stud before installing stud into tine arm.
B. If connecting rod (item 20) was removed, install
rod with the straight side down.
C. When installing shoulder bolt (item 30), align the
bolt head to the center of coring head.
2. Raise tine arm assembly up from bottom of coring
frame.
Position tine arm to upper crank arm and con-
necting rod to lower crank arm.
3. Install flat washer (item 22) and lock nut (item 21) to
crank arms to retain tine arm and connecting rod.
T
orque lock nuts from 150 to 170 ft–lb (203 to 230 N–m).
IMPORTANT: When installing coring head chain,
m
ake sure that alignment pins are used to properly
time the crank arm assemblies.
4. Install coring head chain (see Coring Head Chain
Installation
in this section).
5. After assembly, rotate coring crankshaft by hand to
make sure that no binding occurs.
6. Install coring head cover.
7. Lower coring head lock–up brackets before machine
use.
Coring Head
Greens Aerator Page 8 – 7 Coring Head