21
OPERATOR’S MANUAL
REAR EXTENSION ARMS
KWT, CAMEL, KOLIBER, KW, LAMA
1
5
4
8
7
13
10
11
12
9
3
6
2
14
Electric / electric-proportional steering
(Subject:
KWT 550 E/EP, KWT 650 E/EP, KWT 651 E/EP, KOLIBER 400 E, KOLIBER 450 E and CAMEL
900 EP
)
Geared pumps power two independent circuits: machine's drive circuit with capacity of about
100 l/min and hydraulic cylinders' drive circuit with capacity of 21 l/min (42 l/min. - EP). 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
) with capacity
of 70 l/min. On gauge plate cylinder (
8
) there is sweep valve (
7
) mounted to protect the mower's
extension arms from overloading (
) Hydraulic cylinders (
9-12
) with throttle choke valves (
13
)
control the extension arm.
Fig. 21
. Diagram of proportional hydraulic drive of the extension arm
1
- Hydraulic pumps
2
- Hydraulic pump engine
3
- 5-section divider
4
- Oil tank
5
- Suction filter
6
- Single-section distributor
7
- Sweep valve
8
- Gauge plate cylinder
9
- Hydraulic cylinder of cutting unit
10
- Hydraulic cylinder of arm extension
11
- External arm cylinder
12
- Internal arm cylinder
13
- Throttle check valve
14
- Cooler
