Transmission Case Pressure Test
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1996 Dodge Ram Wagon, 1996 Dodge Ram Van, 1996 Dodge Pickup, 1996 Dodge Dakota, and 1996 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Transmission case, gaskets and oil pump housing can be checked for leaks using the following method. Transmission must be removed to perform transmission case pressure test.
- Remove torque converter from transmission. Fabricate torque converter hub seal cup, retaining strap and vent plug retainer. See Fig 1
thru Fig 5
. Retaining strap specifications are approximate. Measure hole positions on torque converter housing before drilling.CAUTION: Ensure torque converter hub seal cup surface is smooth to prevent damage to seal in oil pump.
- Install torque converter hub seal cup, vent plug retainer and retaining strap. See Fig 5 . Install shipping plug in rear output shaft opening. Install and secure plugs in remaining transmission openings except oil cooler return line.
- Attach air pump to oil cooler return line. See Fig 5
. Ensure cap is installed on oil cooler supply line fitting. Using pressure regulator, apply 8-10 psi (.5-.7 kg/cm2
) of air pressure to transmission case.CAUTION: DO NOT apply more than 10 psi (.7 kg/cm2 ) of air pressure to transmission case.
- Coat oil pump and front of transmission case with soapy water solution. Check for bubbles, indicating a leak in seals, "O" rings, gaskets or transmission case. Release air pressure. Remove test equipment. Replace defective components.