1958 Buick Flight Pitch Dynaflow Removal and Installation

1958 FLIGHT PITCH DYNAFLOW REMOVAL AND INSTALLATION

13-REMOVAL AND INSTALLATION OF FLIGHT PITCH DYNAFLOW TRANSMISSION FROM CAR EQUIPPED WITH AIR- POISE SUSPENSION

Removal

1. Raise car by operating manual over-ride valve.
2. Raise car front and rear solidly supporting front suspension and rear of frame. Support axle housing with floor jack.
3. To prevent damage to air spring assemblies, carefully and slowly loosen air lines from rear air springs to allow springs to bleed air out. Remove plungers from air spring.
4. Disconnect height control valve links at strut rods using 7/16″ wrench.
5. Disconnect radius rod at axle end using 3/4″ wrench and 9/16″ deep socket.
6. Disconnect lower ends of rear shock absorbers using 5/8″ wrench.
7. Disconnect parking brake cable at rear cable sheave and at bracket on torque tube. Disconnect brake hose from pipe at frame X member and remove yoke. Cover hose and pipe to prevent entrance of dirt.
8. To prevent strain on parts, disconnect exhaust pipe(s) at manifold(s) and loosen exhaust pipe to muffler joint(s).
9. Install 3″ guide pins in alternate bolt holes in torque ball. Remove remaining two torque tube flange bolts using 9/16″ socket.
10. Lower axle assembly and push back to clear torque ball.
11. Remove converter housing cover.
12. Turn flywheel until one converter drain plug can be loosened to provide an air vent. Turn flywheel until opposite drain plug is down. Remove this plug and allow oil to drain from converter.
13. Remove filler pipe from oil pan and allow oil to drain from transmission.
14. Remove converter to flywheel bolts using 1/2″ socket.
15. Disconnect oil cooler pipes.
16. Disconnect speedometer cable. Disconnect stator control rod at transmission lever. Disconnect lower shift rod at transmission lever and upper shift rod at idler lever. Leave lower rod, idler lever and bracket attached to cross-member.
17. Support transmission securely and use jack to safely support engine.
18. Remove two nuts and four bolts and nuts holding mounts to support using 9/16″ socket.
19. Raise engine and transmission just enough to relieve strain on support. Remove eight attaching bolts and nuts using 9/16″ socket and remove transmission support. If shims are present, note number and location so they may be reinstalled in original position.
20. Lower transmission sufficiently to remove six transmission case to crankcase bolts using 5/8″ socket and extension.
21. With engine separately supported, move transmission to rear to disengage converter pump cover from crankshaft. Lower transmission and remove from under car.

NOTE: If transmission is to be placed on oily surface, remove mounts to prevent deterioration of rubber.

CAUTION: Do not tilt transmission forward as weight of converter may damage bushings in front planet carrier and oil rings on first turbine shaft.

Installation of Transmission

1. Turn flywheel so that one hole for converter attaching bolt is straight up and wide flange is straight down. Be certain drive lugs on converter pump do not disengage from front pump gear.
2. Raise transmission into place with same equipment used for removal. Align converter attaching bolt holes with flywheel holes before moving transmission forward against crankcase.
3. Adjust lifting equipment so transmission meets crankcase squarely. Install converter housing to crankcase bolts, tightening evenly to 45-55 ft. lbs. torque.
4. Install three flywheel to converter bolts, tightening to 25-30 ft. lbs. torque.
5. Check converter drain plugs for tightness and install converter housing cover.
6. Raise transmission just enough to install transmission support, installing any shims in their original position. Tighten bolts to 25-30 ft. lbs. torque. Install two nuts and four bolts and nuts holding mounts to support. Tighten to 25-30 ft. lbs. torque.

NOTE: If transmission cannot be made to seat on support, the front engine mounts should be loosened and the engine raised (by means of a pry bar) and pulled forward to remove bind from front mounts. If bind is allowed to remain, engine may set up vibration when running. Following installation of transmission, retighten motor mounts.

7. Remove engine support jack and transmission hoist.
8. Connect upper shift rod to idler lever and lower shift rod to transmission lever. Connect stator control rod to transmission lever. Connect speedometer cable.
9. Connect oil filler pipe to oil pan.
10. Connect oil cooler pipes.

NOTE: Following installation, check to insure that pipes are not contacting transmission support, frame, front spring crossmember, body, etc.

11. With 3″ guide pins in place, align and connect torque tube to torque ball, making certain that blank splines on propeller shaft line up with those in rear yoke of universal joint. Remove guide pins and install bolts.
12. Install parking brake cable. Connect brake hose to pipes and secure with yoke at frame X member. Bleed rear brakes and adjust parking brake cable.
13. Loosely connect radius rod and shock absorbers.
14. Connect air lines to rear air spring domes.
15. Insert plungers into air springs, and carefully pull down on height control valve arm to partially inflate air spring assembly and retain plunger.
16. Connect height control valve links to strut rod brackets.
17. Connect and tighten exhaust system. Be certain all pipes are centered in holes in frame and no bind exists.
18. Wipe all oil from outside of transmission and lower car so normal weight is on rear wheels. Tighten shock absorber bolts and radius rod bolts. Lower car to floor.
19. Add four quarts Dynaflow oil to transmission. Raise rear wheels and with transmission in “Drive” “D” range and engine idling add eight more quarts Dynaflow oil. Place transmission selector lever in “N” Neutral and lower rear wheels to touch ground. Check oil level and add oil as necessary to bring to level on dip stick.
20. Check car for proper adjustment of linkage. Road test car thoroughly with frequent stops and starts as might be encountered in heavy traffic. A thorough warm-up is desired.
21. Place car on hoist and carefully examine transmission and all connections for leaks. Recheck oil level.