20
KWT, CAMEL, KOLIBER, KW, LAMA
REAR EXTENSION ARMS
OPERATOR’S MANUAL
13
2
6
3
12
9
11
10
7
12
8
4
5
1
3.3.
Characteristics of hydraulics of extension arm
Cable-type steering
(Subject:
KWT 550/650, CAMEL 900, KOLIBER 400/450
)
Geared pumps power two independent circuits: machine's drive circuit with capacity of 100 l/min
and hydraulic cylinders' drive circuit with capacity of 21 l/min. In machine's drive circuits wires have
16 mm diameter, while in cylinders' control circuit
10 mm. Control of oil circulation is possible
owing to hydraulic distributors (
3, 6
). Oil tank (
4
) of adequate capacity. In extension arm-type mower's
hydraulic engine's drive circuit there is suction oil filter (
5
). On gauge plate cylinder (
8
) there is sweep
valve (
7
) mounted to protect the machine's extension arms from getting overloaded (
–
applies
only to
KWT 550
,
KWT 650
and
CAMEL 900
.
KOLIBER
400
and
KOLIBER
450
instead of gauge plate
cylinder (
8
) both have overload breaker. Hydraulic cylinders (
8-11
) with throttle choke valves (
12
)
control the extension arm.
Fig. 20.
Extension arm-type mower's hydraulic drive diagram
1
–
Hydraulic pumps
2
–
Hydraulic pumps' engine
3
–
Four-section distributor
4
–
Oil tank
5
–
Suction filter
6
–
Single-section distributor
7
–
Sweep valve
8
–
Gauge plate cylinder
9
–
External extension arm cylinder
10
–
Internal extension arm cylinder
11
–
Cutterbar cylinder
12
–
Throttle check valve
13
–
Cooler
