Defects And Their Repair - SaMASZ KW 141 Operator's Manual

8.

DEFECTS AND THEIR REPAIR

In case of a malfunction, immediately stop the machine on a stable grounds, turn off the motor
and wait until the mowing head is fully stopped. Before disconnecting any of the hydraulic hoses, check
whether there is no pressure in the hydraulics and remember to cut-off the oil feed from the tan to the
machine's hydraulics. Hot or pressurized oil leak may cause serious bodily injuries. For the sake of the
operator's safety, the machine must be stopped on even ground. All hydraulic cylinders and moving
elements must be completely locked.
Malfunction
The machine is not
mowing properly or
leaves strips of uncut
grass
Problem with arm
control with hydraulic
cylinders, they work
slowly, automatically or
become inoperative
62
KWT, CAMEL, KOLIBER, KW, LAMA
Cause
Worn or blunt flail knives
Wrong selection of type of flail knife to
work conditions
Too low cutterbar rpm
Inoperative tractor PTO, no rpm output
Improperly matched work conditions to machine and driving speed
Pump becomes inoperative or leak on
1-section divider
Damaged disk key on flail shaft-engine
coupling. (Heads with a direct power
transmission from engine on flail shaft)
Inoperative hydraulic motor
Locked cutting chamber
Inoperative hydraulic cylinder, oil leaks
between the chambers
Defective cylinder control distributor, oil
leaks
Hydraulic pump becomes inoperative
Damaged Joystick or controller for E or
EP control
Damaged wiring system
Control cable not adjusted
No voltage on tractor
Loose ground cable.
Damaged control system
Closed throttle check valves
REAR EXTENSION ARMS
Recommendations
Sharpen the knives or replace
Mount correct flail knives
Adjust to adequate rpm on tractor output
540 or 1000 rpm depending on option
Check PTO shaft and repair in service
station
Check pump operation with use of flow
meter and pressure gauge. If oil feed and
pressure is correct, check the divider, if
necessary replace damaged elements
Replace key
Replace motor
Remove material deposits
Replace sealing on the cylinder or replace
the cylinder
Replace damaged elements
Repair the system
Make adjustments
Perform tractor repairs
Attach ground cable to machine frame
correctly
Replace damaged parts
Check and adjust valves
OPERATOR'S MANUAL