Safety Valves; Hydraulic Engine - SaMASZ KW 141 Operator's Manual

6.5.7. Safety valves

Cylinder (2) is connected to twin locking valve (16) (Fig. 60). Its main task is to keep the cylinder's
position, in case of hydraulics failure. This valve is factory set and is not covered by warranty.
Rotation cylinder (17) is connected to sweep valve (18) (Fig. 61), which protects working arms
from overloading. Increasing pressure in cylinder shall cause oil flow and arm deflection. Valve
adjustment is performed with bolt (19) located on the valve. Do not make any self-adjustments of the
valve.
Keep in mind that hydraulic hoses (20) of cylinder (17) must be suitable to hold high pressure
(min 300 bar).
It should be borne in mind, that too big a deflection of the boom, changes the mower's position
to improper. Then the tractor should be stopped immediately and lever (B) switched in up position
(extension arm turned left) (B - Fig. 40). Improper mower's position causes impairment of mowing
quality.

6.5.8. Hydraulic engine

Hydraulic engine drive's (21) hydraulic hoses connection should be controlled at least once
a month. In case of leaking tighten the hoses (Fig. 62).
Hydraulic motor (21) connected to flail shaft by means of a coupling.
CAUTION!
Hydraulic engine can operate in one direction only (to the left from engine bar
side). Do not connect the engine in the other direction – it shall lead to its
damage!
Operation without guard around the hydraulic engine is forbidden – it may lead
to damaging the engine!
54
KWT, CAMEL, KOLIBER, KW, LAMA
20
17
Fig. 61. Sweep valve (18) for underrun protection
21
Fig. 62. Hydraulic engine driving shaft with cutterbar's knives
REAR EXTENSION ARMS
18
19
OPERATOR'S MANUAL