AT 500, 1500 SERIES AUTOMATIC TRANSMISSIONS Paragraph
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2–19. TORQUE PATHS THROUGH TRANSMISSION a. Converter Operation . . . . . . . . . . . . . . . .2–11 b. Neutral Operation . . . . . . . . . . . . . . . . . .2–11 c. First-Range Operation . . . . . . . . . . . . . .2–12 d. Second-Range Operation . . . . . . . . . . . .2–13 e. Third-Range Operation. . . . . . . . . . . . . .2–14 f. Converter Operation (AT 1500 Series Models) 2–14 g. Lockup Operation (AT 1500 Series Models) . . . . . . . . . . . .2–14 h. Fourth-Range Operation. . . . . . . . . . . . .2–15 i. Fourth-Range Lockup Operation (AT 1500 Series Models) . . . . . . . . . . . .2–15 j. Reverse Operation . . . . . . . . . . . . . . . . .2–16
Section 3. PREVENTIVE MAINTENANCE 3–1. SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–1 3–2. PERIODIC INSPECTION AND CARE . . . 3–1 3–3. IMPORTANCE OF PROPER TRANSMISSION FLUID LEVEL a. Effects of Improper Fluid Level . . . . . . . .3–1 b. Foaming and Aerating . . . . . . . . . . . . . . .3–1 3–4. DIPSTICK MARKINGS . . . . . . . . . . . . . . . .3–1 3–5. TRANSMISSION FLUID LEVEL CHECK PROCEDURE a. Preparation . . . . . . . . . . . . . . . . . . . . . . . .3–2 b. Cold Check . . . . . . . . . . . . . . . . . . . . . . . .3–3 c. Hot Check . . . . . . . . . . . . . . . . . . . . . . . . .3–3 3–6. KEEPING TRANSMISSION FLUID CLEAN . . . . . . . . . . . . . . . . . . . . . . .3–3 3–7. TRANSMISSION FLUID RECOMMENDATIONS a. Recommended Automatic Transmission Fluid and Viscosity Grade . . . . . . . . . . . .3–3 3–8. TRANSMISSION FLUID AND FILTER CHANGE INTERVALS . . . . . . . . . . . . . . . .3–4 3–9. TRANSMISSION FLUID CONTAMINATION a. Examine at Fluid Change . . . . . . . . . . . . .3–4 b. Metal Particles . . . . . . . . . . . . . . . . . . . . .3–4 c. Coolant Leakage . . . . . . . . . . . . . . . . . . . .3–4 d. Auxiliary Filter . . . . . . . . . . . . . . . . . . . . .3–4 vi
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3–10. TRANSMISSION FLUID AND FILTER CHANGE PROCEDURES a. Disassembly . . . . . . . . . . . . . . . . . . . . . . 3–7 b. Assembly . . . . . . . . . . . . . . . . . . . . . . . . 3–7 3–11. BREATHER. . . . . . . . . . . . . . . . . . . . . . . . . 3–8 3–12. LINKAGE a. Shift Selector Lever and Control Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . 3–9 b. Mechanical Actuator Adjustment. . . . . . 3–9 c. Other Linkage Adjustments . . . . . . . . . . 3–9 3–13. ADJUSTMENT OF SHIFT POINTS a. Calibrated on Test Stand or in Vehicle. . . 3–9 b. Location of Adjusting Components . . . . 3–9 c. Checks Before Adjusting Shift Points . . 3–10 d. Calibration by Road Test Method . . . . 3–10 e. Calibration by Speedometer Readings Method 3–10 f. Calibration by Test Stand Method . . . . 3–10 3–14. TRANSMISSION STALL TEST AND NEUTRAL COOL-DOWN CHECK a. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . b. Stall Testing Preparation . . . . . . . . . . . c. Stall Test Procedures — Vehicles Without Smoke-Controlled Engines . . d. Stall Test Procedures — Vehicles With Smoke-Controlled Engines . . . . . e. Neutral Cool-Down Check Procedure. . . f. Results. . . . . . . . . . . . . . . . . . . . . . . . . . 3–15. PRESERVATION AND STORAGE a. Storage, New Transmissions . . . . . . . . b. Preservation Methods . . . . . . . . . . . . . . c. Storage, One Year — Without Transmission Fluid . . . . . . . . . . . . . . . . d. Storage, One Year — With Transmission Fluid . . . . . . . . . . . . . . . . e. Restoring Transmission to Service. . . . 3–16. REPLACEMENT OF COMPONENTS WHILE TRANSMISSION IS IN THE VEHICLE CHASSIS a. Replacement of Selector Shaft Seal . . . b. Removal of Output Flange, Output Seal . . . . . . . . . . . . . . . . . . . . . . c. Removal of Output Shaft Bearing . . . . d. Removal of Speedometer Drive Gear or Speed Sensor Wheel and Selective Spacer . . . . . . . . . . . . . . . . . .
Copyright © 1996 General Motors Corp.
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