Toro 07155SL Service Manual ProCore 864 1298 Preface Publication

Disassembly (Fig. 29)
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.
7.  Using suitable lift or hoist, raise coring head slightly
using lifting  eyelets on coring  crankshaft as lift  points
(Fig. 30). Use appropriate jackstands or blocking to sup-
port the coring head to prevent it from shifting.
1.
8.
frame and coring head frame.
Remove upper link assemblies (item 21) from hitch
2.
head depth to the deepest setting.
Remove  rear  hood  from  machine.  Adjust  coring
9.
of pivot shafts to machine.
Remove fasteners (items 4, 5 and 6) that secure end
3.
Remove front cover and pulley shield from machine
(see Cover Removal in the Service and Repairs section
of Chapter 3 − Chassis).
10.Carefully  slide pivot  shafts from  H−frame.  Locate
and retrieve  four (4) thrust washers  (item 2) from  be-
tween H−frame and machine frame.
4.
Support  the aerator  to prevent  the  machine from
moving.
11.
Remove H−frame from machine.
NOTE:  The ProCore 1298 uses  one (1) compression
spring for each of its dual coring  frames. The ProCore
12.If  necessary, remove  bushings (item  20) from  H−
frame.
864
uses two (2) compression springs for its single cor-
ing frame.
2
WARNING
THE CORING HEAD FRAME IS SPRING LOADED!
To prevent  possible  personal injury,  use com-
pression spring  tool (see  Special Tools)  to re-
move compression  spring(s) before  disassem-
bling the coring head pivot.
1
5.
Use compression spring tool (see Special Tools) to
remove compression spring(s) from coring head frame:
A.  Install  compression  spring  tool   threaded  rod
through holes in each spring cup (item 1), then install
washer and nut on both ends of rod.
Figure 30
1.
Bearing housing
2.   Lifting eyelet
B.  Tighten upper  nut  on  rod  to compress  spring
(item 2).
Assembly (Fig. 29)
If upper links were disassembled, note that link has
1.
C. With  tool  compressing the  spring,  carefully lift
bottom of spring, slide it from coring head frame, low-
er from hitch frame and remove from machine.
a groove on the end that has left hand threads. Install rod
ends  equally  to make  link  assembly  from  8.170” to
8.230”
(208 to 209 mm) long (rod center to rod center)
(Fig.  31). Also,  align rod  ends  before tightening  jam
nuts.
D. If  working  on ProCore  864,  repeat for  second
compression spring.
2.
bushings into H−frame  bores. Bushings should be re-
cessed into the H−frame at least 0.030” (0.8 mm).
If bushings were removed from H−frame, press new
6.
stands or blocking.
Make sure that machine is well supported with jack-
IMPORTANT: When  installing  pivot  shafts,  make
sure that  both sides  of  H−frame are  aligned with
holes in frame before installing pivot shaft.
CAUTION
The ProCore  864  coring head  frame assembly
weighs approximately 900 pounds (408 kg). The
ProCore   1298  coring   head   frame   assembly
weighs  approximately   675  pounds   (306  kg).
Make sure that proper lift or hoist is used to sup-
port coring head frame during repairs.
3.
Position H−frame  to hitch  frame making  sure that
thrust washers are placed between H−frame and hitch
frame. Align both sides of H−frame to pivot shaft holes
in hitch frame. Slide pivot shaft through hitch frame and
H−frame. Secure  pivot  shaft to  hitch frame  with  cap
screw and flange nut.
ProCore 864/1298
Page 4 − 29
Coring Head
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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Document TypeCatalog
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