Toro ProCore Processor Service Manual page 87

The ProCore Processor uses several pulley assemblies
to drive the jack shaft, chopper axle, brush shaft and ro-
tating corner shaft. Service of these pulley assemblies
requires similar procedures.
Due to pulley design, the location of the pulley assembly
on a shaft is adjustable. Before loosening the pulley as-
sembly, measure the distance from the end of the shaft
to the bushing location. During the assembly procedure,
use this measurement to provide the initial location of
the pulley assembly on the shaft. Final pulley location
should be determined after the drive belt is installed on
the pulleys by carefully aligning the drive and driven pul-
leys. Position of drive and driven pulleys is also depen-
dant on idler pulley location.
Disassembly (Fig. 7)
1. Remove drive belt from pulley(s) to be serviced (re-
fer to service information for specific drive assembly that
exists later in this section).
2. Remove three (3) cap screws and lock washers that
secure taper lock bushing to pulley.
IMPORTANT: When loosening taper lock bushing,
tighten cap screws progressively and evenly. Ex-
cessive or unequal pressure on the cap screws can
break the taper lock bushing flange.
3. Insert removed cap screws into threaded removal
holes of the bushing. Tighten screws progressively and
evenly until the pulley is loose on the bushing.
4. If bushing is equipped with a set screw, loosen set
screw that secures taper lock bushing to shaft.
5. Remove bushing and pulley from the shaft.
6. Locate and retrieve square key that locates bushing
on shaft.
Assembly (Fig. 7)
1. Clean shaft that pulley is to be installed. Apply anti-
seize lubricant to square key and place key into shaft
slot.
2. Make sure that tapered surfaces of pulley and taper
lock bushing are thoroughly clean (no oil, grease, dirt,
rust, etc.).
ProCore Processor
3. Slide pulley and taper lock bushing onto shaft. The
pulley should be positioned to the inside of the taper lock
bushing. Make sure that tapered surfaces of pulley and
bushing align.
4. Align threaded holes of pulley with non--threaded
holes of bushing. Loosely install three (3) cap screws
with lock washers to bushing and pulley assembly.
IMPORTANT: DO NOT fully tighten taper lock bush-
ing cap screws until after the drive belt is installed
and the pulleys are properly aligned.
5. Install drive belt to drive and driven pulleys.
6. Using a straight edge across the face of the drive
pulley, verify drive belt alignment across drive and driv-
en pulleys. Move pulley being installed so that drive belt
and straight edge are aligned indicating correct position
of pulley on shaft.
IMPORTANT: When tightening taper lock bushing
cap screws, tighten in three (3) equal steps and in a
circular pattern to prevent bushing flange damage.
7. Tighten three (3) cap screws in three (3) equal steps
and in a circular pattern to secure pulley and taper lock
bushing to shaft.
A. Torque 1/4 -- 20 cap screws from 80 to 88 in- -lb
(9.1 to 9.9 N- -m).
B. Torque 5/16 -- 18 cap screws from 182 to 198 in- -
lb (20.6 to 22.3 N- -m).
C. Torque 3/8 -- 16 cap screws from 333 to 387 in- -lb
(38 to 43 N- -m).
8. Using a straight edge, check that belt alignment is
still correct. If needed, loosen taper lock bushing and ad-
just pulley location on shaft.
9. If bushing is equipped with a set screw, tighten set
screw.
10.Make sure that drive belt is properly tensioned and
that idler pulley alignment to drive belt is checked (refer
to service information for specific drive assembly that
exists later in this section).
Page 6 - - 11 Chassis