Operation
The crankshaft assembly is supported with four (4) iden-
tical bearing housing assemblies. Each bearing housing
supports two (2) crankarms.
The coring head of the ProCore 864 consists of a frame,
a coring crankshaft assembly, turf holders, tine holders
and aerating tines. The crankshaft assembly operates
eight (8) stomper arms with rotolink assemblies to pro-
vide vertical tine motion. The coring head frame pivots
to allow aerating depth control.
The crankarm used in the #1 crankshaft position is in-
corporated into the driven pulley. The remaining odd
numbered crankshaft positions (#3, #5 and #7) use the
same crankarm. These crankarm castings can be iden-
tified with the numbers 3 and 5 in the castings. Cran-
karms used in even numbered crankshaft positions (#2,
Drive for the coring head comes from the tow tractor
PTO. A gearbox on the ProCore is turned by a driveshaft
connected to the tractor PTO. The gearbox provides
rotation for the coring head crankshaft assembly.
#4,
#6 and #8) are the same component. These cran-
karms can be identified with the numbers 2, 4 and 6 in
the crankarm castings.
The gearbox rotates a single driveshaft which in turn ro-
tates a pulley to drive the coring crankshaft assembly
with a 4 groove drive belt. This drive belt is tensioned by
a spring loaded idler pulley.
Three (3) coupler assemblies are used to connect the
crankarms that are secured in the bearing housings.
These coupler assemblies use the same components:
a #2 coupling, a #3 coupling, a coupling plate, two (2)
iso−mounts and necessary fasteners. The #2 couplings
attach to even numbered crankarms. The #3 couplings
are secured to odd numbered crankarms.
The coring crankshaft is composed of multiple crank-
arms, bearings, bearing housings and couplings. The
crankshaft assembly is designed to ensure minimal
vibration during aerator operation.
Two counterweights are incorporated into the ProCore
864
coring crankshaft to ensure the rotational balance
Aeration depth control is performed by adjusting the cor-
ing head depth control assembly to obtain the desired
aerating depth.
of the crankshaft assembly. One of the counterweights
is bolted to the driven pulley. The second counterweight
is attached to the #8 crankarm position.
Turf holders are used to prevent damage to the turf as
the tines are lifted from the ground.
The stomper arms and rotolink assemblies used on the
ProCore 864 are the same for all crankshaft positions.
A variety of tines, tine heads and turf holders are avail-
able for use on the ProCore 864. See the Operator’s
Manual for available options.
Coring Crankshaft Timing
On the ProCore 864 aerator, each pair of crankarms
joined through a bearing housing are assembled with
the crankarm journals positioned 180o apart. The cou-
Coring Crankshaft (Fig. 1)
pler assemblies that connect these pairs of crankarms
allow for proper phasing of the crankshaft to allow mini-
mal operating vibration.
The coring crankshaft assembly is composed of eight
(8)
crankarms. The crankarms are timed for proper aer-
ating operation. Coring crankshaft positions are identi-
fied based on their relationship with the crankshaft
driven pulley. The #1 position is at the pulley side of the
crankshaft (Fig. 1).
NOTE: On the ProCore 864, the numbers cast into the
crankarms will not align with the raised indicator marks
on the bearing housings.
ProCore 864/1298
Page 4 − 5
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:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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