Coring Head Timing; Removing The Aerator From The Tractor - Toro ProCore 864 Operator's Manual

Coring Head Timing

The unitized coring head design of the ProCore
aerators provides industry-leading smooth operation
while taking out the guesswork of timing.
ProCore 864 (Figure 42)
Each pair of crank arms joined through a bearing
housing are timed 180 degrees apart (i.e. arm
positions 1-2, 3-4, 5-6, 7-8). The adjacent pairs are all
set with the same timing whereas the later pair lags
by 120 degrees. The same pair of coupling castings
are used between all adjacent pairs (i.e. coupling
positions 2-3, 4-5, 6-7). To further reduce operating
vibration, 2 counter weights are added at the #1
position on the pulley and the #8 position.
Note:
The numbers cast into the crank arms will not
align with the raised indicator mark on the bearing
housings for the ProCore 864.
Figure 42
ProCore 1298 (Figure
This unit is comprised of 2 independent coring heads
with 6 arms each. The timing of either coring head
is not dependent on the adjacent coring head. The
timing marks are easily identified by the numbers cast
into the crank arm castings and the raised locator on
the bearing housings. The #1 arm always starts with
the drive pulley.
43)
Removing the Aerator from
the Tractor
Important:
Refer to the PTO shaft owner's manual
for additional operating and safety information.
1. Park the vehicle on a level surface, not on a
slope.
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2. Disengage the PTO and engage the parking
brake.
3. Shut off the engine and remove the key from the
ignition switch.
4. Before leaving the operator's seat, wait for the
engine and all moving parts to stop.
5. Install the storage stands and secure them to
the aerator with the lynch pins
32
Figure 43
(Figure 44).
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