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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 192 (Overhaul - 46 & 47 Automatic Transmission Series) >> Testing >> Hydraulic Pressure Test >> Pressure Test With Transmission In "D" (Drive Gear)

Pressure Test With Transmission In "D" (Drive Gear)

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.
  1. This tests oil pump output, pressure regulation and condition of clutch hydraulic circuits. Remove pressure tap plugs and install pressure gauge in accumulator and front servo pressure taps. See Figure . Start and operate engine at 1600 RPM.
  2. Move manual selector lever on transmission to fully forward position and then rearward 2 positions to gearshift "D" position. Read pressure on both pressure gauges as throttle valve lever on transmission is moved from fully forward position to fully rearward position.
  3. Line pressure at accumulator pressure tap should be 54-60 psi (3.7-4.2 kg/cm2 ) with throttle valve lever fully forward and gradually increase as throttle valve lever is moved rearward. Front servo is pressurized only in gearshift lever "D" position and pressure should be within 3 psi (.2 kg/cm2 ) of line pressure up to the downshift point.
  4. If line pressure is not within specification, adjust line pressure. Refer to the LINE PRESSURE  under HYDRAULIC PRESSURE ADJUSTMENTS. If proper line pressure still cannot be obtained, check for defective components and hydraulic circuit. Remove pressure gauges. Install and tighten pressure tap plugs to specification. Refer to the TORQUE SPECIFICATIONS  table.