REMOVAL & INSTALLATION
The fluid should be changed with the transmission warm.
- Raise and support the vehicle, preferably in a level attitude.
- With Turbo Hydra-Matic 250 or 350, support the transmission and remove the support crossmember.
- Place a large pan under the transmission pan. Remove all the front and side pan bolts. Loosen the rear bolts about four turns.
- Pry the pan loose and let it drain.
- Remove the pan and gasket. Clean the pan thoroughly with solvent and air dry it. Be very careful not to get any lint from rags in the pan.
- Remove the strainer to valve body screws, the strainer, and the gasket. Most 350 transmissions will have a throw-away filter instead of a strainer. On the 400 transmission, remove the filter retaining bolt, filter, and intake pipe O-ring.
- If there is a strainer, clean it in solvent and air dry.
- Install the new filter or cleaned strainer with a new gasket. Tighten the screws to 12 ft lbs. On the 400, install a new intake pipe O-ring and a new filter, tightening the retaining bolt to 10 ft lbs.
- Install the pan with a new gasket. Tighten the bolts evenly to 12 ft. lbs. (8 ft. lbs. for Powerglide).
- Lower the car and add 5 pts. (3 pts. on Powerglide) of DEXRON® or DEXRON II® automatic transmission fluid through the dipstick tube.
- Start the engine in Park and let it idle. Do not race the engine. Shift into each shift lever position, shift back into Park, and check the fluid level on the dipstick. The level should be 1 / 4 in. below ADD. Be very careful not to overfill. Recheck the level after the car has been driven long enough to thoroughly warm up the transmission. Add fluid as necessary. The level should then be at FULL.