Section 5: Maintenance & Lubrication
RCR1242, RCR1248, RCR1260 & RCR1272 Rotary Cutter 326-047M
2/7/20
27
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.
3. Remove access 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 1/16" 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.
7.
Carefully check cutting edges of blades in relation to
blade carrier rotation to ensure correct blade
placement. Blade Rotation is counterclockwise with
cutting edge leading. Airfoil (lift) must be oriented
towards the top of the deck.
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.
8. 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.
9. Replace access cover (#5).
10. If replacing dishpan (#4), nut (#7) on gearbox output
shaft should be torqued to 450 ft-lbs. minimum and
secured with cotter pin (#8) with both legs bent
opposite directions around the nut.
IMPORTANT:
Examine blade bolts (#1) and flat
washers (#2) for excessive wear and replace if worn.
Cutter Blade Assembly
Figure 5-4
Counterclockwise Blade Rotation
Figure 5-5
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Land Pride Rotary Cutter Blade Parts
Item Part No. Part Description
326-185A BLADE BOLT KIT (Items 1, 2, & 3 below)
326-037A 42" MATCHED BLADE KIT (Items 1, 2, 3, & 6)
326-038A 48" MATCHED BLADE KIT (Items 1, 2, 3, & 6)
326-039A 60" MATCHED BLADE KIT (Items 1, 2, 3, & 6)
326-040A 72" MATCHED BLADE KIT (Items 1, 2, 3, & 6)
1 802-920C BLD BOLT 1 1/8-12 x 3 1/2" with 3/16" KEY
2 804-147C
WASHER FLAT 1 1/4 SAE PLAIN
3 803-170C NUT HEX TOP LOCK 1 1/8-12 PLT.
4 326-367H DISHPAN 15 1/2", RCR12 SERIES
5 840-273C PLUG LP 3" ID RUBBER
6 820-065C 48"CUTTER BLADE 1/2 x 3 x 18 3/4 CCW
6 820-198C 60" CUTTER BLADE 1/2" x 3" x 25" CCW
6 820-199C 72" CUTTER BLADE 1/2" x 3 x 31" CCW
7 803-095C NUT HEX SLOTTED 1-14
8 805-017C PIN COTTER 3/16 X 1 3/4 PLT
9 804-070C FLAT WASHER 1 SPECIAL
Use 1-11/16"
Socket Wrench
On Blade Nut (#3)
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