32
Figure 4-3
: Clutch Adjustment
CUTTER BLADE MAINTENANCE
DANGER
To avoid serious injury or death:
•
Always disconnect driveline from power
•
take-off shaft before servicing underside
of cutter. The tractor can be started with
power take-off engaged.
•
Always secure equipment with solid,
non- concrete supports before working
under it. Never go under equipment
supported by concrete blocks or
hydraulics. Concrete can break,
hydraulic lines can burst, and/or
hydraulic controls can be actuated even
when power to hydraulics is off.
WARNING
To avoid serious injury or death:
•
Do not operate cutter with blades that
are out-of-balance, bent, excessively
worn, excessively nicked, or with blade
bolts that are excessively worn. Such
blades can break loose at high speeds.
•
Do not attempt to straighten a bent
blade or weld on a blade. Do not
attempt to modify a blade or weld on a
blade. Do not attempt to modify a blade
such as hard surfacing, heat treating,
cold treating, or by any other method.
IMPORTANT:
Only replace cutting blades in pairs. Replacing
single blades can result in an out-of-balance
condition that will contribute to premature
bearing wear/breakage and/or structural
cracks in gearbox and/or deck.
Always inspect cutting blades before each
use. Make certain they are properly installed
and are in good working condition. Replace
any blade that is damaged, worn, bent, or
excessively nicked. Never try to straighten a
bent blade! Small nicks can be ground out
when sharpening.
Remove cutting blades and sharpen or
replace as follows:
1.
Place tractor gear selector in park
and/or set brakes, shut engine off,
and remove ignition key.
2.
Disconnect main driveline from
tractor power take-off and secure
cutter deck in the up position with
solid supports before servicing
underside of cutter.
Refer to Figure 4-4:
3.
Remove access rubber cover (#5).
4.
Rotate Blade bolt (#1) until in
alignment with access hole (A).
5.
Unscrew locknut (#3) to remove
cutting blade (#6). Blade bolt (#1) is
keyed and will not turn freely.
6.
Both blades should be sharpened at
the same angle as the original cutting
edge and must be replaced or re-
ground at the same time to maintain
proper balance in the cutting unit.
The following precautions should be
taken when sharpening blades:
a.
Do not remove more material
than necessary.
b.
Do not heat and pound out a
cutting edge.
c.
Do not grind blades to a razor
edge. Leave a blunt cutting
edge approximately 1.5 mm
