Banks Power Dodge Trucks: (Diesel ’98 - 02 5.9L Cummins ISB) Speed Control- Banks SmartLock (used with CBC-equipped Banks Brake) - Manual (Page 10)

SmARTLoCK TRANS
BRAKE FuNCTioNAL
DESCRiPTioN
ComPARED
To FACToRY
TRANSmiSSioN
oEm Transmission
Function for Torque
Converter Lockup
The Dodge automatic
transmission is capable of
torque converter clutch
engagement in third or
fourth gear range. Normally
the clutch engagement is
controlled by PCM inputs
such as coolant temperature,
engine rpm, vehicle speed
and throttle position. If the
overdrive control switch is
in the normal ON position,
the clutch will engage after
the shift to fourth gear and
above approximately 45 mph.
If the control switch is in the
OFF position, the clutch will
engage after the shift to third
gear at approximately 35 mph
at light throttle.
oEm Transmission
Function for Line Pressure
Boost
The Dodge transmission
includes a throttle valve that
is actuated by a mechanical
lever. An interconnect linkage
between the throttle valve
and accelerator pedal allows
the transmission line pressure
to be controlled as a function
of accelerator pedal position.
As pedal position opening
increases, transmission line
pressure will increase.
Smartlock Trans Brake
Function
The Smartlock Trans Brake
uses the OEM transmission’s
capability of locking the
torque converter and raising
transmission line pressure
to optimize the functionality
of the Banks Brake exhaust
brake system.
To allow 100% of the
available retarding force to
be transferred to the drive
wheels, the Smartlock Trans
Brake interrupts the torque
converter lockup command
from the vehicle’s PCM and
allows the torque converter to
remain locked under dropped
throttle conditions. The OEM
transmission will normally
unlock the converter under
these conditions. The torque
converter lockup command
will remain in effect until
approximately 30 mph.
There are two operating
conditions that will require
light throttle pressure to
engage the torque converter
clutch. These are:
(1) Activating the exhaust
brake switch under dropped
throttle and (2) Re-locking
the torque converter after
an overdrive to 3rd gear
downshift. Under these
conditions, simply apply light
throttle pressure until the
vehicle’s computer engages
the lockup clutch (indicated
by a slight drop in engine rpm)
and release the accelerator
pedal. Clutch engagement
should remain in effect until
approximately 30 mph.
To further optimize
transmission function under
exhaust braking conditions,
the Smartlock Trans Brake
will pneumatically actuate
the throttle valve lever under
dropped throttle conditions
to increase transmission line
pressure.
NOTE: The Smartlock System
is designed to compliment the
function of the Banks Brake.
It is not designed or intended
for use under acceleration as
a means to hold the torque
converter locked or raise
transmission line pressure.
This device does not increase
the torque capacity of the
vehicle’s transmission under
acceleration.
Gale Banks Engineering
546 Duggan Avenue • Azusa, cA 91702
(626) 969-9600 • Fax (626) 334-1743
Product Information & Sales: (800) 438-7693
bankspower.com