Section 6: Hydraulic Plumbing
3/12/21
RCP(M)2760 & RCP(M)3760 Parallel Arm Rotary Cutter 316-548M
55
Remote Cylinder Plumbing For Tractor Control Option
Figure 6-2
72948
S
Breakaway Cylinder Installation
Figure 6-1
Cylinder Plumbing
Refer to Figure 6-1 & Figure 6-2:
ARM1, ARM2, DECK, and BREAKAWAY cylinders are
connected directly to the tractor remote duplex outlets
and are controlled by the tractor operator.
Important: Locate and remove
1/2" shipping bolt before
connecting hydraulic hoses.
72918
Pressure shut down valve
Breakaway cylinder
Tractor duplex controls
Tractor Control Option
Refer to
on page 29 for
assembly and set-up instructions.
Breakaway Cylinder
Refer to Figure 6-1:
CAUTION
!
To avoid minor or moderate injury:
The breakaway cylinder is designed to bypass hydraulic fluid
under high pressure when cutter head or parallel arms strike
an object during forward movement.
Do not
use a standard
hydraulic cylinder for the breakaway cylinder or damage
could occur to the unit.
The breakaway cylinder is used to prevent structural
damage to the cutter head and parallel arms. If cutter
head strikes an object during forward movement, the
breakaway cylinder extends - allowing the parallel arms
and cutter deck to freely pivot 80 degrees to the rear.
The breakaway cylinder should be installed as shown in
Figure 6-1. Make sure the rod end of the cylinder is
mounted to the pivot lug as shown.
Pressure Relief Valve Operation
Refer to Figure 6-1:
Standard pressure relief valves inherently leaks a small
amount of oil allowing the deck to drift back during field
operation. When needed, reset cutter deck forward using
tractor control levers.
Optional pressure relief valves are available that will
greatly reduces the frequency of deck drift but they will
require continuous force against the deck to move it back.
Deck does not pivot back as freely as it does when
using standard pressure shut down valves
.
IMPORTANT:
A 1/2" bolt is installed for shipping
purposes only. This bolt must be removed before
connecting the hydraulic hoses to the tractor.
Section 6: Hydraulic Plumbing