18” CHIPPER TWIN DISC, INC.
PTO/CLUTCH
63
PTO/CLUTCH
• A good maintenance program is
imperative for the PTO/Clutch. Read
the PTO/Clutch owner’s manual before
performing any service to your
PTO/Clutch. NEVER ENGAGE OR
DISENGAGE THE PTO/CLUTCH AT
ENGINE SPEEDS IN EXCESS OF
1200 RPM. Always disengage the
clutch before performing any type of
service. Follow the Twin Disc Inc. PTO
Service Manual for servicing the
PTO/Clutch. (The following
instructions came from the Twin Disc
manual.)
DO NOT PERFORM MAINTENANCE OF ANY KIND ON THIS MACHINE UNLESS:
The engine is turned off
The ignition key has been removed
The positive battery cable has been disconnected
The clutch is disengaged
Feed control bar is in neutral
All machine parts have come to a complete stop – NOTE: The cutter disk takes
several minutes to come to a complete stop
All machine parts have had sufficient time to cool down
The cutter disk lock pin is installed in the disk lock tube
No operator is in position at the controls to accidentally start machine
At least 2 people are at the site where maintenance is performed
More accidents occur while performing maintenance than any other time! Use extra
caution.
Never perform maintenance with the engine running, not even with the clutch disengaged.
The pilot bearing could seize or freeze to the clutch shaft and permit the clutch to engage
even though the operator thought the clutch had been disengaged.
ALWAYS REPLACE GUARDS AND OTHER PROTECTIVE EQUIPMENT BEFORE
STARTING CHIPPER AFTER PERFORMING MAINTENANCE.