Section 8: Maintenance & Lubrication
3/12/21
RCP(M)2760 & RCP(M)3760 Parallel Arm Rotary Cutter 316-548M
61
1. Secure cutter in the transport position.
2. Shut tractor down before dismounting. Refer to
3. Disconnect driveline from the tractor.
Rotary Cutter Blade Assembly
Figure 8-1
Refer to Figure 8-1:
4. Inspect cutting blades. Make certain they are
properly installed and are in good working condition.
Replace any blade that is damaged, bent, worn, or
excessively nicked. Small nicks can be ground out
when sharpened.
5. Remove access cover (#6), by removing flat washers
(#7), lock washers (#8), and wing nuts (#9).
6. Blade bolt (#1) is keyed and will not turn freely.
Remove locknut (#3), flat washer (#2), blade bolt (#1)
and cutter blade (#5).
IMPORTANT:
Cutting blades must be replaced in
mating pairs. Not replacing both blades will result in
an out-of-balance condition that will contribute to
premature bearing breakdown on the spindle hub
and create structural cracks in the cutter housing.
Land Pride Rotary Cutter Blade Parts
Item Part No.
Part Description
318-586A BLADE BOLT KIT
(Includes items 1, 2, & 3 below)
1
802-277C BLADE BOLT 1 1/8-12 x 3 7/16 WITH KEY
2
804-147C WASHER FLAT 1 HARD ASTMF436
3
803-170C NUT HEX TOP LOCK 1 1/8-12 PLATE
4
316-124H DISHPAN WELDMENT SPCL-HUB
5
820-112C
CUTTER BLADE 1/2 x 4 x 25 CW
35949
7.
Repeat step 6 for the other blade.
8. 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 1/16" (1.6 mm) 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.
Blade Rotation
Figure 8-2
9.
Carefully check cutting edges of
blades in relation to blade carrier rotation to ensure
correct blade placement.Cutter blades must be
installed with cutting edge leading in rotation
.
WARNING
!
To prevent 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.
10. Insert blade bolt (#1) through blade (#5), dish
pan (#4), and flat washer (#2). Secure blade with a
new locknut (#3)
and torque to 450 ft-lbs (746 Nm).
11. Replace access cover (#6) and secure with flat
washers (#7), lock washers (#8), and wing nuts (#9).
Tighten wing nuts until lock washers are flattened.
12. If replacing dishpan (#4), castle nut (#10) on gearbox
output shaft should be torqued to 550 ft-lbs (minimum
and secured with cotter pin (#11) with both legs bent
opposite directions around the nut.
Blade bolt
access hole
22003
IMPORTANT: