3. Be sure that all gasket material is removed from the main housing and there are no scratches that would cause a splitline leak. 4. Install two headless guide bolts (M8 x 1.25) into opposite corners of the oil pan mounting face on the main housing. 5. Place a gasket on the oil pan and align the bolt holes. 6. Slide the oil pan gasket and oil pan over the guide bolts and hold them in place while installing two of the bolts to hold the parts in place. 7. Install the remainder of the 12 bolts that fasten the oil pan to the main housing (two will replace the guide bolts). Tighten the bolts to 24–29 N·m (18–21 lb ft). 8. Reinstall the drain plug and sealing washer. Tighten the drain plug to 30–40 N·m (22–30 lb ft). 9. Replace the quantity of transmission fluid lost during the suction filter and seal replacement process. Refer to MT3190EN for fluid fill and check procedures.
6–9. CONTROL VALVE COMPONENT REPLACEMENT The control valve components that will be covered as in-chassis repairs are the internal wiring harness, the pressure switch manifold assembly, the solenoids, and the internal detent lever assembly. These components are typically replaced after a diagnostic process has been completed and a faulty component was identified. a. Internal Wiring Harness Replacement. Use the following procedure to replace the internal wiring harness. NOTE: It would be helpful to know how much transmission fluid is lost during the replacement of the internal harness. Fluid in good condition caught in a clean container may be reused. 1. Remove the drain plug and sealing washer from the oil pan and allow the fluid to drain into a suitable container (see Figure 6–6). Examine the fluid as described in MT3190EN. 2. Remove the 12 bolts that fasten the oil pan to the main housing. Hold the oil pan in position as the last bolt is removed. 3. Remove the oil pan and oil pan gasket. Check the magnet in the oil pan (see Figure 6–6). Be sure that excessive or large metallic particles are not present. These conditions would indicate that an overhaul may be required. 4. Remove the suction filter by pulling straight down where the suction tube is seated in the main housing. 5. Remove the suction seal from the filter or from the seal bore in the main housing. Discard the old seal and the filter, if it is being replaced. 54
