Malfunction And Their Repairs - SaMASZ KDT 180 Operator's Manual

8. MALFUNCTION AND THEIR REPAIRS

Tab. 9. Defects and their repair
Defect
Mower stops working
(partly)– leaves stripes of
uncut grass between the discs
The grass is wound on the
forming drums
Grass blocks the mower –
lack of grass flow or the flow
is uneven
Safety device is working
often incorectlly without
clear reason
Mower does not work, even
though the drive is
transmitted from the tractor
Mower is blocked
Mower's hydraulics does not
work
Leaking cylinder
Excesive vibration during
work
Oil leak in gear
Operator's manual
Reason
1 Lack of knives
2 Worn knives
Improperly mounted knives
3
(left – right)
4 Improper front inclination
Too high PTO rpm
5
(The most frequent mistake)
6 Too low work speed
7 Slidind V-belts
8 Damaged tractor's PTO
Check tractor's PTO if it has 540 E.
9 E stands for economical rpm –
around 380 rpm
Mower with either tine or roller conditioner may mow improperly in case of
Mowing lying grass without inclination
towards the front
Too low work speed
Swath guides are set too narrow
Insufficient spring tension
Worn elements of safety device
Torn off shaft of intersecting axis gear
Damaged gears in the cutterbar.
Damaged bearings in the disc hub
Damaged or dirty hydraulic cylinder
and check valve
Tractor's hydraulic system is damaged
Dirty oil in hydraulic unit of the tractor
Damaged PTO shaft
Not tight assembly
- 38 -
Rear disc mowers
Put on knives strictly acc. to
Adjust inclination strictly acc. to
Too low spring tension – regulate
spring tension acc. to instructions
Worn V-belts – Replace V-belts
In that case operate with 1000 PTO
rpm but low tractor's rpm – around
very small grass or after the rain
Always mow low and fast –
inclination towards the front –
Speed up to 10 km/h or more
Widen swath guides to the
Adjust spring tension acc. to
Replace the safety device
Replace intersecting axis gear
This repair must be done by
Replace or clean hydraulic
connector and check valve
Check tractor's hydraulic system
Replace oil in hydraulic unit of the
tractor (recommended class of
cleanliness of oil according to
NAS 1638 is minimum 9-10).
Purchase repair kit of the cylinder
and replace damaged sealings
Check the condition of PTO shaft
Examine tightness and check oil
KDT
Repair
Put on knives
Replace knives
instructions
instructions
Reduce PTO rpm
Speed up to V≥10 km/h
Repair
1200 rpm
4 cm
maximum
instructions
023.01.COER
SaMASZ service
and if need be replace
level.