Bondioli&Pavesi 399USAG01_C - Manual (Page 21)

21
ENG
FRICTION TORQUE LIMITERS
Check the condition of the friction linings when installing the clutch or after periods
of storage.
• If the edges of the clutch plates are exposed (see fig. 44) the clutch is either type
FV with Belleville spring or FFV with helicoil springs. Measure and record the spring
height as shown in figure 45. If the clutch plates are covered by a metal band (see
figure 46) the clutch is type FT.
If the clutch discs are exposed and the bolts have cap nuts, the clutch is of
the FK type.
Following seasonal use, relieve the spring pressure and keep the clutch in a dry
place. Check the condition of friction disks and restore spring pressure before
using the clutch. If the clutch overheats due to frequent or prolonged slipping,
consult your equipment dealer or manufacturer, or your local Bondioli & Pavesi
representative.
FV – FRICTION TORQUE LIMITER.
The torque transmitted to the implement is limited by allowing the clutch
plates to slip relative to each other. Torque peaks or short duration overloads are
limited when the clutch is used and adjusted properly.
It can be used as an overload clutch, or to help start implements with high inertial
loads.The torque setting is adjustable by adjusting the working height of the spring.
The edges of the linings and plates are exposed in an FV clutch.
The torque setting is adjusted by increasing or decreasing the height “h”
of the springs. To increase/decrease the torque setting tighten/loosen the
eight nuts by 1/4 of a turn and check for correct operation. Repeat the procedure if
necessary. Avoid excessive tightening of the bolts - implement, tractor, or driveline
damage may occur.
FT - FK FRICTION TORQUE LIMITERS
The torque transmitted to the machine is limited by allowing the clutch plates
to slip relative to each other. Torque peaks or short duration overloads are limited
when the clutch is used and adjusted properly. It can be used as an overload
clutch, or to help start implements with high inertial loads. The FT has a metal
band around its circumference. The bolts should be tightened until the metal band
around the circumference of the clutch touches the spring, then loosen each nut
by 1/4 turn. Avoid excessive tightening of the bolts - implement, tractor, or driveline
damage may occur.
The FK clutch has bolts with cap nuts. The spring compression is correct
when the nuts are fully screwed on. Use only special B&P bolts and nuts.
If the clutch has four socket head set screws in addition to the eight hex
head bolts on the flange yoke, it is equipped with the Spring Release system.
Spring pressure is relieved when these four set screws are screwed into the flange
yoke. See the instruction leaflet enclosed with clutches with the Spring Release
system installed. The Spring Release System enables checking of the condition
of the friction clutch and reduces spring pressure on the disks during storage.
Friction clutches equipped with the Spring Release System are supplied with
an additional instruction sheet. Read this information for proper use of the
Spring Release System.
FFV - FRICTION TORQUE LIMITER
The torque transmitted to the implement is limited by allowing the clutch plates to
slip relative to each other. Torque peaks or short duration overloads are limited when the
clutch is used and adjusted properly. It can be used as an overload clutch, or to help start
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45
46
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48