Land Pride RCR1872 User Manual download pdf (Page 22)

Section 5: Maintenance and Lubrication

RCR1860 and RCR1872 Series Rotary Cutters 312-849M

12/17/07

Land Pride

Table of Contents

9. Once blade deflection is correct, replace used nut

with new locknut (#6) and torque to 450 ft-lbs.

10. If replacing dishpan (#4), nut on gearbox output shaft

should be torqued to 450 ft-lbs. minimum and cotter

pin installed in nut with legs securely bent around

nut.

Cutter Blade Assembly

Figure 5-2

Shearbolt Protected Drivelines

The Standard Shear Bolt Driveline is secured to the

cutter with a shearbolt for protection of driveline and

gearbox. The shearbolt is designed to shear off when the

blade impacts objects that the cutter is not designed to

cut through. Replace shearbolt with Land Pride part

#802-264C. Refer to Figure 1-5 on page 10.

3/4" maximum

blade deflection

when blade

bolts are tight

24590

Land Pride Cutter Blade Parts

Item Part No. Part Description

318-586A BLADE BOLT KIT

(Includes items 1, 2, 5, & 6 below)

1 802-277C BLADE BOLT 1 1/8-12 x 3 7/16 WITH KEY

2 312-075D BLADE SPACER 16 GA. (.060")

2 312-082D BLADE SPACER 18 GA. (.048")

2 312-089D BLADE SPACER 20 GA. (.036")

2 312-808D BLADE SPACER 24 GA. (.024")

3 820-198C RCR1860 STANDARD BLADE 25”LG. CCW

3 820-199C RCR1872 STANDARD BLADE 31”LG. CCW

3 820-212C RCR1860 LOW LIFT BLADE 25”LG. CCW

3 820-213C RCR1872 LOW LIFT BLADE 31”LG. CCW

4 312-815H RCR1860 15” DISHPAN WELDMENT

4 312-841H RCR1872 15” DISHPAN WELDMENT

5 804-147C WASHER FLAT 1 HARD ASTMF436

6 803-170C NUT HEX TOP LOCK 1 1/8-12 PLATE

IMPORTANT: A snap ring is installed so that the

driveline does not come loose from the gearbox

should the shearbolt shear. (Replace damaged or

worn snap ring with Land Pride part #800-079C)

CAUTION

Engage parking brake, disengage PTO, shut off tractor, and

remove key before making any of the following adjustments.

Slip-Clutch Protected Drivelines

Driveline components are protected from shock loads by

a two plate slip-clutch. The clutch must be capable of

slippage during operation to protect the gearbox,

driveline and other drivetrain parts. The slip-clutch

driveline is secured to the cutter with a grade 8 bolt.

The clutch 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.

CAUTION

Engage parking brake, disengage PTO, shut off tractor, and

remove key before making any of the following adjustments.

Clutch Run-In

Refer to Refer to Figure 5-3:

1. Using a pencil or other marker, scribe a line across the

exposed edges of the clutch plates and friction discs.

Clutch

Figure 5-3

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 PTO drive for 2-3 seconds

to permit slippage of the clutch surfaces. Disengage

PTO, then re-engage a second time for 2-3 seconds.

Disengage PTO, shut off tractor and remove key.

Wait for all components to stop before dismounting

from tractor.

4. Inspect clutch and ensure that the scribed markings

made on the clutch plates have changed position.

Slippage has not occurred if any two marks on the

friction disc and plate are still aligned. A clutch that

has not slipped must be disassembled to separate

the friction disc plates. See “Clutch Assembly and

Disassembly” on page 21.

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