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John Deere Air Reel Owner’s Manual
62
OPERATION
5.5 iNiTiAL ADJUSTMENTS (cONT.)
5.5.4 TORqUE LiMiTER (SLiP cLUTcH) RUN-iN
The Air Reel comes equipped with a torque limiter (slip
clutch) on the main drive. The torque limiter is set in the
engaged position from the factory. Before use, the slip
clutch must be slipped and adjusted to ensure proper
function.
Allowing the torque limiter to slip:
Loosen the center locknuts on the torque limiter (Figure
81) so that the pressure is relieved from the pressure
plates.
With the combine engine at idle speed, engage the
PTO for 2-3 seconds to make the torque limiter slip.
Do not allow the torque limiter to slip for more
than 2-3 seconds at a time to prevent damage to
the linings
.
If the torque limiter does not slip, repeat the procedure
2 or 3 times. If it still doesn’t slip, check that all the
center locknuts are loosened and not placing tension
on the pressure plates.
After the torque limiter has slipped, it must be adjusted to
the tension required to operate the header. The goal of
this procedure is to have the torque limiter slip momen-
tarily upon initial startup and then operate normally. The
slip clutch must not slip during normal operation.
Slowly engage the PTO with the engine running at
idle speed.
If the torque limiter does not slip, shut off machine and
loosen the center locknuts in 1/4 turn increments until
it slips momentarily when the header is engaged. If the
torque limiter continues to slip after start-up, tighten the
center locknuts in 1/4 turn increments until it slips only
momentarily when the header is engaged.
1.
2.
3.
1.
2.
Figure 81, Torque limiter center lock nuts
WARNiNG
Place all controls in neutral or off, stop combine engine,
set parking brake, remove ignition key, set cylinder
stops, wait for all moving parts to stop, then properly
block machine before servicing, adjusting, repairing or
unplugging.
iMPORTANT
To prevent burn-up of slip discs, the torque limiter must
be adjusted prior to use.
5.6 OPERATiNG HiNTS
The following are recommended adjustments the operator
can make based on crop conditions. Any adjustments that
involve the operator leaving the combine cab should heed
the warning instructions below.
LiGHT cROPS:
Adjust the reel back and down.
The reel tines must clear the auger and be adjusted
perpendicular to the cutterbar.
Use only enough air to move the crop to the auger.
It is recommended that the cutterbar be adjusted to the
fully extended position for cutting short, thin crops.
HEAvY cROPS:
Adjust the reel forward and higher than in short
crops.
Use the air to bend the crop over the cutterbar, not to
force it into the header.
Direct the air just below the head of the plant. This will
allow the heads to feed into the auger first.
It is recommended that the cutterbar be adjusted to
the middle position when cutting good, heavy stand-
ing crops.
DOWN, TANGLED cROPS:
Adjust the reel forward and lower so the reel tines are
close to the cutterbar.
Tilt the tines back for maximum pitch so the crop is
lifted as much as possible.
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