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Lubrication & Maintenance
H) Overload and overrunning clutches (Figures. H1—H8)
™
1. Radial pin
clutch
When overload occurs, the torque is limited and, during the
period of slipping, is transmitted in a pulsating manner.
Noise acts as a warning.
2. Cut-out clutches — 3. Cam-type cut-out clutches
When the torque is exceeded, power flow is interrupted. The
torque is re-established by reducing the speed of
and disengaging the PTO.
4. Shear bolt clutches
When the torque is exceeded, power flow is
interrupted due to the bolt shearing The torque is
re-established by replacing the broken shear bolt.
Use only the bolt specified in the operator's
manual for a replacement!
5. Friction clutches
When overload occurs, the torque is limited and
transmitted constantly during the period of
slipping. Short-duration torque peaks are limited.
Prior to initial operation and after long
periods out of use, release the pressure on
the disks to insure proper function.
a. Tighten nuts until friction disks are released.
Rotate clutch fully.
b. Turn nuts fully back. Now the
clutch is ready for use.
Figure. H5 shown, also applies to
other models of friction clutch (see
Figure H7)
6. Overrunning clutches protect
the drive against heavy
rotating masses.
7. Friction-type overrunning clutches are a combination of
friction clutches and overrunning clutches.
8. Elastic clutches absorb shocks and vibrations.
PTO Maintenance
J) To disassemble guard: (Figures. J1—J4)
1. Remove locking screw.
2. Align bearing tabs with cone pockets.
3. Remove half-guard.
4. Remove bearing ring.
K) To assemble guard: (Figures. K1—K5)
1. Grease yoke groove and inner profile tube.
2. Fit bearing ring in groove with recesses
3. Slip on half-guard.
4. Turn cone until it engages correctly.
5. Install locking screw.
57
facing profile tube.
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