Instruction manual
Two rotor rake
TANGO
- 30 -
8.
DEFECTS AND THEIR REPAIR
Defect type
Cause
Recommendations
The rake will not
lift/lower hydraulically
Damaged or soiled elements of
hydraulic assembly
Replace or clean fastening
elements of hydraulic assembly
Damaged tractor's hydraulic
assembly
Examine condition of tractor's
hydraulic assembly
Leaking cylinder
Contaminated oil in tractor's
hydraulic assembly
Replace oil in tractor's hydraulic
assembly (recommended oil purity
class acc. to NAS 1638 a
minimum is 9-10). Provide brand
new cylinder repair kit and replace
worn gaskets
The rake leaves
considerably large part of
swath
Bent or missing raking tines
Replace with new ones and mount
properly
Too low or too high rotating speed
Increase / reduce rpm rate
Incorrect raking height
Adjust the raking height in
accordance with item 5.6.
Preparing rake for operation
Excess vibrations when
operating
Deflected telescopic articulated
shaft
Examine condition of the shaft and
if need be, replace with new one
Damaged raking tines
Raking arms set too low
Set raking height properly with
adjustment lever or with trolley
(turf soils)
Contamination of raked
swath
Raking tines immersed too deep
Set bigger distance between raking
arms and the ground
Twisted raking tines
Replace with new ones
Oil leak in gear
Assembly not tight enough
Examine tightness and check oil
level.
9.
REPAIR AND WITHDRAWAL FROM USE
9.1.
Repair
REMEMBER:
Before repair works make sure the rake is disconnected from the tractor
.
Before repairing or assessing whether the rake 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, tines etc. should be replaced.
Once the rake 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.
