Operating manual
Rear- side flail mowers on a pantograph
KBRP ; Kangu
- 28 -
8.
DEFECTS AND THEIR REPAIR
Tab. 8.
Malfunctions and their correction
Malfunction
Cause
Recommendations
The mower does not mow.
Belt slippage.
Adjust belt tautness using the bolt
according to the instructions.
Worn-out belts - replace belts or apply
belt paste.
The PTO rpm are too low despite
high rpm of tractor engine.
Check PTO as a service station.
Excess vibrations when
operating
Deflected PTO
shaft
Examine condition of PTO shaft and
if need be replace
Damaged flail knife or knife missing
Examine condition of knife and if need
be, replace with new one
Mower does not get
compacted to working
position
Damaged or dirty fastening elements
of hydraulics
Replace or clean fastening
elements of hydraulics
Damaged tractor’s hydraulic
assembly
Examine condition of
tractor’s hydraulic asse
mbly
Closed choke valve
Open choke valve
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
9.
REPAIR AND WITHDRAWAL FROM USE
9.1.
Repair
REMEMBER
Before repair works make sure the machine is disconnected from the tractor
.
Before repairing or assessing whether the machine is still serviceable, it should be carefully
cleaned of dirt, mud and plant remains.
After checking nuts and bolts, proper slack in joints and gears we can assess if the machine is
still serviceable. Worn out bolts, pegs, pins, discs, holders, knives etc. should be replaced.
Once the machine is repaired perform the following:
❑
make sure that all elements are installed properly,
❑
install the removed guards,
❑
check whether screws and nuts are tightened,
❑
check
proper slack in joints and in gears
,
❑
once all the guards are installed, perform a warm-up start to make sure the repaired machine
operates properly.