Special Maintenance - Boqballe EX Manual

EX(W)
Trend
SPECIAL MAINTENANCE, Friction clutch
The transmission of the machine is equipped with friction/overload clutch.
The friction clutch is a most important component protecting against
overload – and a damaged transmission / PTO- shaft.
The friction clutch protects especially the reversible gear system of the
Trend transmission. The Trend-system is based on an inpact clutch.
The friction clutch must be maintained, and it must be checked, that it
is not corroded.
The friction clutch must "slip" at START of the tractor PTO.
If the clutch does not slip – the transmission will be damaged.
The friction clutch "slips" approx. 1-2 turns at START of the tractor PTO. This reduces the
load on the components of the transmission to approx. 1/10 of the load to which the
transmission is exposed, if the coupling is not able to "slip".
As principal rule the coupling must be separated and cleaned if the
machine has not been used for more than 6 months. Alternatively
minimum once a year.
It is always necessary to START the tractor PTO "slowly /
smoothly" !
GUIDANCE HOW TO CLEAN AND ADJUST THE FRICTION CLUTCH.
Demount the 6 adjustment bolts of the clutch – and the clutch
is separated.
Clean all the "slip surfaces"
for rust (perhaps with a wire
brush) – and the adjustment
bolts
reassembled.
The clutch surfaces should not be
greased with oil/grease !
The friction clutch is adjusted by a torque wrench, so that the
splined axle slips at:
If a torque wrench is not available – you can in an emergency
– adjust the bolts so that the length of the spring corresponds to
30 mm.
w/springs are
The procedure is not recommended.
Splined axle
ADJSUTMENT BOLTS
w/ SPRINGS
6
2 coupling plates
15 – 18
Kg/m
145 – 175
N/m