During initial operation of a new vehicle or a vehicle
with a new clutch, check for clutch slippage during
acceleration. If the clutch slips, decelerate until the
clutch does not slip. Allow the clutch to cool 15 to 30
seconds, and then gradually accelerate again. If the
clutch continues to slip, repeat the procedure. If
necessary, repeat the procedure up to five times. If
the clutch slips after five attempts, stop the vehicle.
Allow the clutch to cool for at least one hour. Notify
your Freightliner dealer of the problem.
NOTICE
Do not allow sustained slippage of the clutch;
this could severely damage the clutch disc,
pressure plate, or flywheel. Damage caused by
clutch slippage due to improper break-in is not
warrantable.
Using the Clutch Brake
The clutch brake is applied by depressing the clutch
pedal past the fully released clutch position, almost
to the floor plate. The last part of the clutch pedal
travel will compress the clutch brake plates together,
stopping the transmission input shaft. The purpose of
the clutch brake is to stop the transmission gears
from rotating in order to quickly engage a
transmission gear after idling in neutral.
NOTICE
Never apply the clutch brake when the vehicle is
moving. If the clutch brake is applied when the
vehicle is moving, the clutch brake will try to
stop or decelerate the vehicle, causing rapid
wear of the clutch brake friction discs.
Considerable heat will be generated, causing
damage to the release bearings and the
transmission front bearings.
Holding the Vehicle on an Incline
Always use the vehicle service brakes to prevent the
vehicle from rolling backwards while stopped on a
hill. Slipping the clutch on a hill to maintain the
vehicle position will quickly damage the clutch
assembly.
Coasting
Coasting with the clutch pedal depressed and the
transmission in a low gear can cause high driven
disc speed. The clutch speed can be much higher
under these conditions than when the engine is
driving the clutch. This condition creates a hazardous
situation due to the lack of vehicle control and due to
the high clutch disc speed. Engaging the clutch
under these conditions can cause component
damage because of the shock loads to the clutch
and drivetrain.
WARNING
Always shift into the gear that is correct for the
traveling speed of the vehicle and engage the
clutch. Coasting with the clutch disengaged can
prevent engagement of the correct transmission
gear which can cause loss of vehicle control,
possibly resulting in personal injury or property
damage.
High clutch disc speeds while coasting can also
cause the clutch facing to be thrown off the disc.
Flying debris from the clutch can cause injury to
persons in the cab.
Clutch Adjustment
Eaton Fuller Solo clutches are adjustment-free. As
the clutch wears, its wear-adjusting technology
monitors clutch components and makes any
necessary adjustments. The wear adjusting
technology comes from two sliding cams, which
rotate to maintain the proper adjustment. Atop the
upper cam, a wear indicating tab mirrors the cam’s
movement, letting you know when it’s time to replace
the clutch.
Meritor MTC Series Transfer
Cases
Meritor MTC Series
Some vehicles are equipped with a Meritor MTC
Series transfer case for part-time 4x4, 6x6, or 8x8
operation. Meritor MTC Series transfer cases have
two gear sets: HIGH RANGE and LO RANGE.
WARNING
Do not engage a Meritor MTC Series transfer
case when driving on normal highway conditions.
Severe personal injury and/or damage to
components can result when the transfer case is
misused.
IMPORTANT: Steer axle engagement is limited
to 20 percent or less of annual vehicle mileage.
Manual Transmissions, Clutch, and Transfer Cases
15.6
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