Operator’s manual
Double-sided mower with central
suspension
“REWERS”
- 43 -
8.
DEFECTS AND THEIR REPAIRS
Tab. 7.
Defects and their repairs
Defect
Reason
Repair
Mower stops working
(partly)– leaves stripes of
uncut grass between the
discs
1
Lack of knives
Put on knives
2
Worn knives
Replace knives
3
Improperly mounted knives
(left – right)
Put on knives strictly acc. to
instructions
4
Improper front inclination
Adjust inclination strictly acc. to
instructions
5
Too high PTO rpm
(The most frequent mistake)
Reduce PTO rpm
6
Too low work speed
Speed up to V
≥
10 km/h
7
Damaged tractor’s PTO
Repair
8
Lying grass
The inclination - the angle zero
The grass is wound on
the forming drums
Mowing lying grass without inclination
towards the front
Always mow low and fast –
inclination towards the front – 4 cm
Mower is blocked with
grass – no grass guiding
or guiding is uneven
Too low mowing speed
Increase the speed up to approx. 10
km/h or more
Swath guides are spaced too narrow
Space swath guides to their maximum
Safety device is working
often without clear
reason
Worn elements of safety device or
improper regulation
This repair must be done by SaMASZ
service
Mower is not mowing
even though drive is
transmitted from tractor
Damaged gear
Replace gear
Spline shafts – wrong rotational
direction of overrunning clutch
Check rotational direction
Mower is blocked
Damaged gears in the cutterbar.
Damaged bearings in the disc hub
This repair must be done by SaMASZ
service
Mower’s hydraulics does
not work
Damaged or dirty hydraulic cylinder
and check valve
Replace or clean hydraulic connector
and check valve
Tractor’s hydraulic system is damaged.
Check tractor’s hydraulic system
Leaking cylinder
Dirty oil in hydraulic unit of the tractor
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
Excesive vibration
during work
Damaged PTO shaft
Check the condition of PTO shaft and
if need be replace
Oil leak in gear
Not tight assembly
Examine tightness and check oil level