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first separator plate and watch carefully for the pis- UNDERDRIVE CLUTCH Because this clutch piston cannot be seen, its oper- ation is checked by function. Air pressure is applied FLUID LEAKAGE-TORQUE CONVERTER HOUSING (1) Check for source of leakage. verter area may originate from an engine oil leak, (2) Prior to removing the transaxle, perform the following checks: When leakage is determined to originate from the transaxle, check fluid level prior to removal of the High oil level can result in oil leakage out the vent in the manual shaft. If the fluid level is high, adjust After performing this operation, inspect for leak- age. If a leak persists, perform the following opera- LEAKAGE TEST PROBE (1) Remove torque converter housing dust shield. (lower area) as dry as possible. A solvent spray fol- (3) Fabricate and fasten test probe (Fig. 4) securely to convenient dust shield bolt hole. Make certain (4) Run engine at approximately 2,500 rpm with transaxle in neutral, for about 2 minutes. Transaxle (5) Stop engine and carefully remove tool. torque converter leak. A path of fluid across probe (7) Remove transaxle and torque converter assembly from vehicle for further investigation. The fluid should t Adhesive Sealant) at specified torque. Possible sources of transaxle torque converter area fluid leakage are: (1) Torque converter hub seal. • Seal lip cut, check torque converter hub finish. • Bushing moved and/or worn. • Oil return hole in pump housing plugged or omitted. • Seal worn out (high-mileage vehicles). (2) Fluid leakage at the outside diameter from pump housing O-ring. (3) Fluid leakage at the front pump to case bolts. Check condition of washers on bolts and use new bolts, (4) Fluid leakage due to case or front pump housing porosity. TORQUE CONVERTER LEAKAGE Possible sources of torque converter leakage are: • Torque converter weld leaks at the out side (periph- Hub weld is inside and not visible. Do not attempt to repair. Replace torque converter. If the torque converter must be replaced, refer to Torque Converter Clutch Break-in Procedure AIR PRESSURE TEST OF TRANSAXLE Fabricate equipment needed for test as shown in Figures 5 and 6. The transaxle should be prepared for pressure test as follows after removal of the torque converter: (1) Plug dipstick tube and plug oil cooler line fitting. Remove vent from manual shaft and in stall a 1/8 inch Fig. 4 Leak Locating Test Probe Tool Ä TRANSAXLE 21 - 97 |