BD
PressureLoc Physical Throttle Control Fits: 94-04 Dodge 5.9L Cummins (47RE / 47RH
/ 48RE Trans.) Available Transmissions: Automatic Item Number: 1030377 Product Warranty: 1-Year Parts & Labor
Install
Guide
NOTE:
This product CAN NOT ship to California due to CARB regulations.
Prevents
torque converter “shudder” and clutch slippage!
It’s strange
but true—the torque converter in ’94-’01
Dodge-Cummins applications is more likely to slip at part
throttle than full throttle. Why? Because the transmission’s
line pressure is controlled by throttle input—the more
throttle you give it, the higher the line pressure goes. The
problem is, the Cummins produces its peak torque at light
throttle, when line pressure is at its lowest! The innovative
BD PressureLoc is designed specifically to address this problem.
The PressureLoc
increases converter lock-up clutch apply pressure by 30% at
light throttle by rotating the transmission’s throttle
shaft to a position that approximates 3/4 throttle. Designed
primarily for stock or mildly modified engine applications
and for owners who have installed an exhaust brake and would
like added protection from slippage. This is not a substitute
for a modified valve body! For higher horsepower and/or heavily
loaded applications, we recommend the addition of a BD Performance
valve body.
THE
BD PRESSURELOC ADVANTAGE
A BD PressureLoc increases torque convertor lock-up clutch applied
pressure on 1994 to 2004 Dodge trucks by 30% at light throttle
pressure. This kit can easily be installed on the stock transmission
and assists in preventing torque convertor shuddering and transmission
slippage.
Torque convertor clutch slippage results in high heat and eventual
transmission failure! The higher the horsepower, the lower the
transmission line pressure is, because line pressure is controlled
by the position of the throttle pedal. Diesel engines have so
much torque at light throttle pedal movement and thus low clutch
apply pressure when the engine is at its peak torque! You can
notice a shuddering torque convertor under throttle at low speeds,
and ALSO under heavy throttle with high power engines.
The PressureLoc’s function is to increase the transmission
line pressure ONLY when the lock-up clutch is engaged. The PressureLoc
cylinder rotates the transmission’s throttle valve shaft
to simulate 3/4-throttle travel to increase the line pressure
to 90% of what the valve body design can attain at wide open
throttle. (NOTE: The resulting pressure must be measured and
set when the kits are installed)
The PressureLoc is primarily designed for stock or mildly enhanced
engine applications and owners who have installed an exhaust
brake and want some extra protection. It is NOT a replacement
for a modified valve body! High horsepower and heavy-loaded
applications should also be equipped with a BD Valve Body with
larger porting for pressures up to 180 psi.
The PressureLoc increases the clutch-applied pressure to 90%
of what the valve body is capable of achieving at full throttle
when you are only at ¼ to ¾ throttle travel. This
kit addresses the need for more clutch holding pressure. This
pressure increase remains within the valve body design. The
stock valve body has 4.0 GPM flow when the torque convertor
is locked up with the PressureLoc engaged. Without the PressureLoc
engaged, this pressure will be 4.0 GPM or less, depending on
throttle pressure.
Our testing has shown that a stock transmission front drive
clutch will slip at 280 lbs of torque with the accelerator pedal
at ½ throttle position, which is in the range of 75 psi
of pressure, and at 410 ft lbs when the pressure is 100 psi.
The torque convertor clutch will slip at 565 ft lbs with 75
psi. With a PressureLoc engaged the pressure is increased to
around the 100 psi mark (130 psi on the 48RE).
NOTE:
This product CAN NOT ship to California due to CARB regulations.
