Section 4: Maintenance & Lubrication
3/17/20
30
Replace Tooth Holder Assembly
Viewed From Motor Side
Figure 4-4
Tooth Holder Assembly
Refer to Figure 4-4:
1. Loosen the two hex socket cap screws (#6). Remove
tooth assemblies (#2 & #3) and replace with new
assemblies (#2 & #3).
2. Tighten hex socket cap screws (#6) to the torque
3. Repeat steps 3-4 to replace other damaged tooth
assemblies.
Replace Wheel Guards
4.
Install cutting wheel guard (#1) over carriage
bolts (#6). Secure cover with flat washers (#8),
lock
washers (#9), and nuts (#7).Tighten nuts to the
correct torque for 3/8"-16 GR5 bolts.
5.
Attach deflector (#2) to the Stump Grinder, using 3/8"
hex bolts (#5), lock washers (#9),
flat washers (#8), and guard bushing (#4). Tighten
bolts to the correct torque for 3/8"-16 GR
5
bolts.
1
2
3
1
2
3
4
1
2 3
4
Straight
Straight
Straight
Left Bent Teeth (#3) on
Near Side (NS) Motor Side
Right Bent Teeth (#2) on
Far Side (FS) Non Motor
Side
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4
Slip Clutch Maintenance
Refer to Figure 4-5:
CAUTION
!
To prevent serious injury:
Slip clutches that have been in use or have been slipped for
only two or three seconds during run-in may be too hot to
touch. Allow a hot clutch to cool before working on it.
The Stump Grinder drive components are protected from
shock loads by a friction slip clutch. The clutch must be
capable of slippage during operation to protect the
gearbox, driveline, and other drive train parts. Friction
clutches should be “run-in” prior to initial operation and
after long periods of inactivity to remove any oxidation
that may have accumulated on the friction surfaces.
Repeat “run-in” instructions at the beginning of each
season and when moisture and/or condensation seizes
the inner friction plates.
Slip Clutch
Follow clutch run-in and assembly instructions below,
shown in Figure 4-5.
Slip Clutch Run-In
Figure 4-5
Clutch Run-In
Refer to Figure 4-5:
1. Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction discs.
2. Carefully loosen each of the 8 spring retainer nuts by
exactly 2 revolutions. It will be necessary to hold hex
end of retainer bolt in order to count the exact
number of revolutions.
3. Start tractor and engage power take-off drive for 2-3
seconds to permit slippage of the clutch surfaces.
Disengage power take-off, then re-engage a second
time for 2-3 seconds. Disengage power take-off, shut
off tractor, and remove key. Wait for all components to
stop before dismounting from tractor.
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