Turbo Action 17999 Torqueflite 727, 904, 998 & 999 Tranz Brake (PRN123) - Manual (Page 5)

Part #17999 3/31/04 Page #5
The following steps must be done for best brake action, both locking and releasing:
If 727, proceed with STEP #11.
If 904, remove tail housing and band lever pin, then proceed.
STEP #11: Loosen lock nut on reverse band linkage and back off adjustment at least 6-8
turns, Fig. #7. If 904, slide lever out of the way.
STEP #12: With a Scribe Hook, lift up on band strut and remove (727 Only).
STEP #13: Now with screwdriver remove snap ring that retains spring retainer on rear servo.
CAUTION: This section is under spring pressure. Be sure to secure with
hand. Remove piston, spring, retainer and snap ring. (Fig. #8)
STEP #14: Remove plug spring and install shim, Fig. #8.
STEP #15: Reinstall servo piston, spring, retainer and snap ring. Be sure snap ring is in
groove all the way.
STEP #16: Carefully place strut back into position. It must be seated properly (727 Only).
If 904, slide lever in place and install pin. Reinstall tail housing.
STEP #17: Re-adjust rear band. If 727, turn in adjustment finger tight (10 in./lbs.), back off
two (2) turns and then holding adjustment, lock the locknut. If 904, install tail
housing, band lever pin and then adjust band to four (4) turns.
STEP #18: Before re-installing valve body into transmission, take note of the plastic half ball
shaped neutral-switch on the driver’s side of the transmission inside of the
transmission case. When installing the valve body, make sure this ball does not
get damaged. Either remove the switch or merely slide the valve body carefully
over the ball. The ball will retract as the valve body puts pressure on it. Also,
do not install large spring which was between valve body and case.
STEP #19: Carefully connect solenoid wire to case connector. Make sure wire connection
does not get close to the park rod or the valve body and short out, Fig. #4.
STEP #20: Place valve body back into transmission pushing the rod into hole that was
mentioned in STEP #3. The rod should be angled towards the center of the
transmission in the front. Push rod firmly towards rear while turning drive shaft.
BUT DO NOT FORCE ROD OR VALVE BODY.
STEP #21: With valve body in place, install 10 valve body bolts and tighten to 8-10 ft./lbs.
Note position of #17390 wire restraint, Fig. #5.
STEP #22: Adjust front band at this time (see instructions page #1).
STEP #23: Clean pan and install with a new gasket.
STEP #24: Replace shift linkage (large piece) and tighten bolt. Adjust linkage to be sure that
shifter is selecting all gears properly. Especially critical is the 2 to 3 shift
adjustment. CAUTION: This unit is PRN123.