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Transmission Operation
Synchromesh Transmission Operation
The Synchromesh transmission has three forward
ranges and one reverse range. Within each range,
including reverse, there are four synchronized speeds.
The synchronized speeds allow for easier shifting
within each range. This combination allows for twelve
forward speeds and four reverse speeds.
All shifting is done manually, in conjunction with the
clutch. The transmission incorporates a shaft brake,
which is designed to stop transmission rotation when
shifting between ranges. This is activated when the
range lever is in neutral and the clutch pedal is fully
depressed.
IMPORTANT: Engage the clutch at a low throttle
setting and as light a draft load as possible to extend
clutch and synchronizer life. Do not engage the clutch
when the throttle is set higher than 1700 RPM while
under load. Raise the implement whenever possible
during shifting.
Use the decelerator pedal to bring the engine speed
down when shifting or engaging the clutch.
All gears in the transmission are constantly in mesh.
When a range is selected, shift collars splined to the
shafts are being engaged with the range gears.
The
tractor must be at full stop in order to shift between
ranges.
The transmission bearings and gears are pressure
lubricated. The lubrication circuit consists of a gear
pump located on and driven by the transmission, an
oil cooler located in front of the engine radiator, a filter
located inside the frame at the front of the tractor, and
the oil distribution manifold on the transmission. The
transmission case acts as a reservoir.
Should the transmission oil pressure warning lamp
come on, (page 3-29) immediately shut down the
tractor and contact your Buhler Versatile dealer to
investigate the cause of lubrication failure.
CAUTION: KEEP THE CAB FLOOR AREA FREE FROM
DEBRIS OR OBJECTS WHICH MAY OBSTRUCT
THE OPERATION OF THE CLUTCH PEDAL. KEEP
THE PEDAL CLEAN AND DRY TO PREVENT YOUR
FOOT FROM SLIPPING OFF THE PEDAL, CAUSING
ABRUPT ENGAGEMENT.
Range Shifting
1. Be sure the engine speed is below 1700 RPM.
Whenever possible, reduce engine speed to idle.
2. Depress the clutch fully and bring the tractor to a
complete stop. Place the range shift lever (1) in
neutral. Wait three to four seconds to allow the
transmission to slow down to a near stopped
condition before selecting the desired range. Shift
pattern decals are located behind the shift lever
indicating range position.
3. If you are not able to move to the desired position,
turn the steering wheel to the left or right to allow
gears to mesh.
4. Slowly release the clutch pedal to achieve a smooth
start.
5. Reset the engine speed to operating range.
The range shift decal located in front of the range shift
lever positions for high (H), medium (M), low (L), or
reverse (R) range.
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Section 3 - Operation
Transmission Operation