Operation
The crankarm used in the #1 crankshaft position is in-
corporated into the driven pulley. Crankarms used in
crankshaft positions #2 and #4 are the same compo-
nent. These crankarms can be identified with the num-
bers 2, 4 and 6 in the crankarm castings. Crankarms
used in crankshaft positions #3 and #5 use the same
crankarm and can be identified with the numbers 3 and
The ProCore 1298 is comprised of two (2) independent
coring heads connected with a pivoting subframe sys-
tem. Each of the coring heads includes a coring crank-
shaft assembly, turf holders, tine holders and aerating
tines. The crankshaft assembly operates six (6) stomper
arms with rotolink assemblies to provide vertical tine
motion. The coring head frame pivots to allow aerating
depth control.
5
in the castings. The crankarm used in crankshaft posi-
tion #6 is different than other crankarms and has the
numbers 2, 4 and 6 in the casting.
Drive for the dual coring heads comes from the tow trac-
tor PTO. A single gearbox on the ProCore is turned by
a driveshaft connected to the tractor PTO. The gearbox
provides rotation for the two (2) coring head crankshaft
assemblies.
Two (2) coupler assemblies are used to connect the
crankarms that are secured in the bearing housings.
These coupler assemblies use two (2) couplings, a cou-
pling plate, two (2) iso−mounts and necessary fasten-
ers. The couplings used on the ProCore 1298 are all
different. The couplings are identified with the crank-
shaft position in the coupling casting.
The ProCore gearbox rotates two (2) driveshafts. Each
of these driveshafts rotates a coring head crankshaft
with a pulley and 4 groove drive belt tensioned by a
spring loaded idler pulley.
The stomper arms and rotolink assemblies used on the
ProCore 1298 are the same for all crankshaft positions.
The two (2) coring crankshafts are composed of multiple
crankarms, bearings, bearing housings and couplings.
For assembly purposes, proper crankshaft component
position is identified by alignment marks on bearing
housings and numbers cast into crankarms and cou-
pling components. Crankarm journals are timed to en-
sure minimal vibration.
Coring Crankshaft Timing
When properly assembled, the crankshaft position num-
bers on the crankarms will align with the raised align-
ment marks on the bearing housing (Fig. 3). The timing
of either coring head is not dependent on the adjacent
coring head.
Aeration depth control is performed by adjusting the cor-
ing head depth control assembly to obtain the desired
aerating depth.
2
Turf holders are used to prevent damage to the turf as
the tines are lifted from the ground.
1
1
A variety of tines, tine heads and turf holders are avail-
able for use on the ProCore 1298. See the Operator’s
Manual for available options.
2
Coring Crankshaft (Fig. 2)
2
Each of the ProCore 1298 coring crankshaft assemblies
is composed of six (6) crankarms. The crankarms are
timed for proper aerating operation. Coring crankshaft
positions are identified based on their relationship with
the crankshaft driven pulley. The #1 position is at the
pulley side of the crankshaft (Fig. 2).
Figure 3
1.
Housing timing mark
2. Crankarm position
The crankshaft assembly on each of the coring heads is
supported with three (3) identical bearing housing as-
semblies. Each bearing housing supports two (2) cran-
karms.
ProCore 864/1298
Page 4 − 7
Coring Head
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro ProCore 1298, Toro ProCore 864 |
| Download File |
|
| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
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