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DIAGNOSIS, MAINTENANCE, BASIC ADJUSTMENT

Learn how to diagnose, maintain, and adjust your transmission with this comprehensive manual. Identify common issues, check fluids, and address leaks effectively. Keep your transmission running smoothly and avoid costly repairs.

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DIAGNOSIS, MAINTENANCE, BASIC ADJUSTMENT

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  1. DIAGNOSIS, MAINTENANCE, BASIC ADJUSTMENT • Chapter 3 • Lab Manual • Page 29

  2. IDENTIFICATION • The quickest way to ID a Trans is by the shape of the oil pan (see Fig. 3-1). • For oil pan ID see pages 39 - 49 of your NAPA catalog. • To decipher tag #’s see page 27 - 38 of your NAPA catalog. Page 29

  3. DIAGNOSTICS • Is the problem: • Hydraulic, Mechanical, Electronic • Or is the problem engine related? • Poor engine performance • Low engine vacuum. Page 32

  4. FLUID CHECK • First Check Fluid Level. • Check dip stick for type of fluid. • Any special instructions. • Vehicle Level • Normal operating temperature. Page 34

  5. FLUID CHANGES • A transmission service should include: • Changing oil filter, • Oilpan gasket, • Adjust Bands, • Adjust TV linkage or Cable, • Check Modulator, • Adjust Manual linkage. Page 34

  6. FLUID LEAKS • External leaks: • Front pump seal • Front pump O’ring • Cooler lines • Manual shaft seal • Speedometer driven gear and adapter • Oil pan gasket • Rear seal Page 38

  7. Checking Vacuum Page 46

  8. MODULATOR • Modulator should hold vacuum for 1 minute with out leaking down. • No fluid should come from vacuum nipple. Page 46

  9. Manual Linkage • The purpose of the manual linkage adjustment is to put the manual valve, shift indicator and detent in proper relationship. Page 48

  10. P R N D 2 1 COLUMN DETENT • Align column detent, valve body detent and shift indicator. Page 48

  11. Manual Adjustment Page 48

  12. TV ADJUSTMENT • Adjust throttle cable to get WOT. • TV plunger must be bottomed out. Page 50

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