Land Pride RCF3096, Руководство оператора

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Section 5: Maintenance & Lubrication
Table of Contents
RCF3096, RCF3010, & RCFM3010 Rotary Cutters 326-566M
54
11/8/18
Cutter Blade Maintenance
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 such as hard surfacing, heat
treating, cold treating, or by any other method. Always
replace blades with new Land Pride blades to assure safety.
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. 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 5-3 on page 55:
3. Remove access cover (#5).
4. Rotate blade bolt (#1) until aligned with access
hole.
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. The following precautions should be taken
when sharpening blades:
a. Do not remove more material than necessary.
b. Do not heat and/or pound out a cutting edge.
c. Do not grind blades to a razor edge. Leave a blunt
cutting edge approximately 1/16" thick.
d. Always grind cutting edge so end of blade remains
square to cutting edge and not rounded.
e. Do not sharpen back side of blade.
f. Both blades should weigh the same with not more
than 1 1/2 oz. difference. Unbalanced blades will
cause excessive vibration which can damage
gearbox bearings and create structural cracks.
IMPORTANT: Only replace cutting blades in pairs
with genuine OEM blades. 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.
Blade Positioning and Rotational Directional
Figure 5-2
Refer to Figure 5-2:
7. Make certain when installing cutter blades that the
blades on one spindle is positioned 90 degrees to the
blades on the other spindle as shown in Figure 5-2.
8. Carefully check cutting edges of blades in relation to
blade carrier rotation to ensure correct blade
placement. Blade rotation is counterclockwise on the
left side and clockwise on the right side. Airfoil (lift)
must be oriented towards the top of the deck.
Refer to Figure 5-3 on page 55:
WARNING
!
To avoid serious injury or death:
A locknut that has been removed can lose its thread locking
properties. Reusing a used locknut can result in a thrown
blade. Always use a new locknut when installing blades.
9. Insert blade bolt (#1) through blade (#6), dish
pan (#4), and flat washer (#2). Secure blade with a
new locknut (#3) and torque to 450 ft-lbs.
10. If replacing dishpan (#4), castle nut (#7) on gearbox
output shaft should be torqued to 550 ft-lbs. minimum
and secured with cotter pin (#8) with both legs bent
opposite directions around the nut.
11. Replace access rubber plug (#5) and reconnect
main driveline to tractor power take-off shaft.
CCW
CC
IMPORTANT: Blades are to be timed at 90
o
from one
dishpan to the other or they could be damaged.
IMPORTANT: Examine blade bolts (#1) and flat
washers (#2) for excessive wear and replace if worn.