Tän verran löysin, kertooko teille mitään. Grand Cherokeessa (1993) oli kolmea mallia jakolaatikoita. Tässä Quadra-Trac:issa on vain kaksi asentoa normaali ja hidas. Lisäksi on vapaa.
There were three transfer cases available in 1993. The NPG 231
Command-Trac part time, the NPG 242 Selec-Trac full time, and the NPG
249 Quadra-Trac all-the-time. The Ltd came standard with the NPG 249
Toi Ltd on noista kallein malli. Alla sitten selostusta. Joku viskoosi juttu.
Although not all Jeep Grand Cherokees utilize a viscous coupling,
some 1993 through 1995 Jeep Grand Cherokees are equipped with a Quadra-
Trac transfer case. An integral part of the Quadra-Trac transfer case
is its viscous coupling, a speed-sensitive device that controls torque
output between the front and rear drive shafts.
The housing of the viscous coupling contains high viscosity silicone
fluid and specially engineered metal plates splined alternately to an
inner and outer drum. When there is a difference in front-to-rear axle
speed, such as when the rear wheels slip, the resulting friction
between the metal plates increases the temperature inside the unit.
This causes the fluid to expand, building pressure that moves the
plates together. This occurs almost instantaneously in two modes: the
``shear'' mode, when momentary speed differences occur such as in
cornering or tight turns, causing the plates to move near each other,
or the ``hump'' mode, when high-speed differences occur for a longer
period of time, such as in deep snow or on off-road trails, causing the
plates to lock and the front and rear drive shafts to turn at the same
speed for maximum traction. As traction is gained, the fluid cools, and
the plates separate.
Onkohan tämän lisäksi edessä tai takana jotain lukkoja?
Just do it!
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