Land Pride RCP2660 Breakaway Operating Procedures, Un-hooking the Rotary Cutter, Refer to Figure

Land Pride Table of Contents

Section 3: Operating Procedures

IMPORTANT: Your Rotary Cutter is equipped with free swinging cutting blades to reduce shock loads to the cutter when striking obstacles. The cutting blades can lock together while transporting. Always check for locked blades before starting to cut.

6.Set tractor throttle to idle or slightly above idle and slowly engage PTO. Start-up vibration is normal and should stop after a few revolutions of the blade carrier. Stop PTO rotation if vibration continues. Wait for PTO to come to a complete stop and then dismount from tractor to check for probable causes such as blades locked together.

7.Once cutter is running smoothly, increase tractor PTO speed to cutter rated PTO speed. Stop PTO rotation immediately if vibration occurs. Wait for the PTO to come to a complete stop and then dismount from the tractor to check for probable causes.

8.Optimum ground speed will depend on density of material being cut, terrain and operator skill. If in doubt, change gears to reduce tractor ground speed to a comfortable level.

Breakaway Operating Procedures

Refer to Figure 3-1:

The deck and parallel arms are designed to breakaway should the cutter head make contact with an immovable object or irregular terrain during forward travel. This “breakaway” feature will protect the cutter against structural damage by allowing the deck and parallel arms to pivot backwards.

Upon breakaway, the cutter head must be reset to original “home” position before normal cutting operations can resume.

IMPORTANT: Do not attempt to operate cutter in reverse. The breakaway mechanism will function correctly ONLY while tractor is moving forward. Cutting while backing up may cause structural damage to the parallel arms and deck if cutter head strikes a solid or immovable object.

1.Raise arms and deck up to clear any obstacles located behind the cutter deck.

2.Slowly back cutter away from any obstacles that will interfere with pivoting unit back to “home” position.

3.Use tractor’s remote (breakaway cylinder) control to pivot unit back to “home” position.

Cylinder Shear Bolt

Refer to Figure 3-1:

A shear bolt is located at the rod end of the breakaway cylinder. This bolt may shear under the following conditions:

•After breakaway, the operator backs the tractor away from the obstruction, but encounters an additional obstruction or immovable object while backing up.

Specifically, the operator did not raise the deck high enough to clear the object before backing up.

•The operator tried to reset the deck and parallel arms by backing the tractor into an obstruction rather than using the tractor’s remote cylinder control.

•The shear bolt has become fatigued after repeated breakaway and reset cycles.

•The shear bolt self-locking nut has been tightened against the clevis causing a pre-loaded stress on the bolt and the bolt to shear at a reduced breakaway force.

24631

Shear Bolt Space

Figure 3-1

Replace shear bolt with correct replacement part (Land Pride Part No. 802-885C). A substitute shear bolt may result in damage to the parallel arms and/or main frame. A single replacement part is included with each cutter and is located on a bracket adjacent to the upper 3-point hitch.

IMPORTANT: Install self-locking nut onto shear bolt until nut is threaded to within approximately 1/32" of contact with clevis as shown in Figure 3-1.

Un-hooking the Rotary Cutter

The following steps should be done when un-hooking the cutter.

IMPORTANT: Make sure transport safety chain is attached to the Rotary Cutter deck and Float Switch, if available, is “OFF” before un-hooking the cutter.

1.Park on a level solid surface.

2.Lower cutter frame to level ground or onto blocks supporting the frame just above ground level.

3.Engage tractor park brake, shut tractor engine off and remove switch key before dismounting from tractor.

4.Unhook control stick from connector at the cutter and power source. Store control stick in a dry location.

5.Disconnect driveline from tractor PTO shaft.

6.Disconnect hoses from tractor duplex outlets.

7.Un-hook 3-point hitch from tractor. Reinstall hitch pins, linch pins and hair pin cotters in cutter hitch for storage.

8.See “Cutter Storage” on page 39 when cutter is not going to be used for a long time.

12/16/08 RCP2660, RCPM2660, RCP3060 and RCPM3060 Parallel Arm Rotary Cutter 316-111M 29