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7A–80 AUTOMATIC TRANSMISSION (4L30–E) Disassembly 1. Position overrun clutch assembly upright, using the overdrive internal gear as a support. D Remove snap ring (1). 252RS009 2. Remove overdrive carrier assembly (2), sun gear (3) and turbine shaft (4). 3. Remove snap ring (5), backing plate (6), and clutch plates (7). 4. Compress diaphragm spring with the J–23327–91 compressor then remove snap ring (8). 252RS010 5. Remove overrun roller clutch cam (9) and roller clutch assembly (10). 6. Remove overrun clutch release spring retainer (11) and diaphragm spring (12). 7. Remove piston assembly (13) from overrun clutch drum (14). 8. Remove turbine shaft seal rings (15). Inspection and Repair Overdrive Carrier Check D Check pinion end play with a feeler gauge. Clearance: 0.24mm–0.64mm (0.0094in–0.025in) If clearance is outside specified value, replace overdrive 252RS011 Visual Check: If any damage, deformation or wear is found, replace the Reassembly 1. Install turbine shaft seal rings (15) with grease (petroleum jelly). 241RS008 2. Install the J–38555 inner installer on the drum (14). D Pre-install piston assembly into J–38555 outer D Install overrun clutch piston assembly (13). Use the |