Section 4: Operating
3/12/21
RCP(M)2760 & RCP(M)3760 Parallel Arm Rotary Cutter 316-548M
44
Shear Bolt Space
Figure 4-3
Breakaway Instructions
Refer to Figure 4-3 &
WARNING
!
To avoid serious injury or death:
Once the cutter head breaks away from home position, stop
forward travel immediately and return the cutter head to home
position.
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.
1. Raise arms and deck up to clear any obstacles that
will interfere with pivoting unit back to “home”
position.
2. Fully retract (BREAKAWAY cylinder) using tractor
control lever or control stick.
1/32"
(.8 mm) Gap
Clevis
24631
7/16" Shear bolt (P/N 802-885C)
7/16" Self-locking nut (P/N 803-229C)
IMPORTANT: Do not attempt to operate the cutter
function correctly ONLY while the 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.
Shear Bolt Space
Figure 4-4
Shear Bolt Replacement
Refer to Figure 4-4:
The shear bolt (#3) located at the rod end of breakaway
cylinder (#1) may shear under the following conditions:
•
After breakaway occurs, 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 control lever or control stick.
•
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.
Replace shear bolt (#3) 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.
74445
IMPORTANT:
Install self-locking nut (#2) onto shear
bolt until nut is threaded to within approximately 1/32"
(.8 mm) of contact with clevis as shown in Figure 4-3.