Servicing - A/t Cadillac Brougham I

IDENTIFICATION

Note. A new designation system has been developed by Hydra-Matic to functionally describe their products. New transmission designations will indicate (in sequence) the number of speeds, type, series, and major features (if applicable) of each transaxle or transmission. New designations of transmissions will be used throughout this section. Use the HYDRA-MATIC PRODUCT DESIGNATIONS tables to cross-reference each new designation.

HYDRA-MATIC PRODUCT DESIGNATION SYSTEM CODES

HYDRA-MATIC PRODUCT DESIGNATIONS (AUTOMATIC)

GENERAL MOTORS RWD AUTOMATIC TRANSMISSION APPLICATION

SERVICE INTERVALS

Check transmission fluid level at every engine oil change. Transmission fluid should be changed and filter replaced every 100,000 miles under normal operating conditions.

Under continuous extreme operating conditions (trailer towing, heavy city traffic with ambient temperature over 90°F/32°C or delivery service), fluid and filter should be changed every 15,000 miles.

CHECKING FLUID LEVEL

1. Start engine and operate vehicle for at least 15 minutes, or until a normal operating temperature is reached. With engine at curb idle, vehicle on level ground, move gear selector lever through all ranges ending in the "P" position.
2. Remove transmission dipstick, wipe clean and fully reinsert it into filler tube. Remove again and inspect fluid level. Fluid level should be between the "ADD 1 PT. OR .5L" mark and the "FULL HOT" mark on dipstick.

RECOMMENDED FLUID

Use only Dexron II Automatic Transmission Fluid (ATF), or its equivalent.

FLUID CAPACITY

Note. Quantities listed are approximate. Correct fluid level should be determined by mark on dipstick rather than by amount of fluid added.

TRANSMISSION REFILL CAPACITIES

DRAINING & REFILLING

1. With vehicle raised and large drain pan placed under transmission oil pan, remove front and side transmission oil pan bolts only. Loosen rear pan bolts about 4 turns each.
2. Carefully pry pan loose with screwdriver, allowing fluid to drain. Remove remaining bolts and remove oil pan. Discard old pan gasket. Remove filter and "O" ring or sleeve type seal. Remove any remaining gasket material left on transmission case.
3. Thoroughly clean pan, magnet and screen with solvent and dry with compressed air. Paper type filters should be replaced. Install new "O" ring on pick-up tube, or install new sleeve into pick-up tube recess. Lubricate with clean oil before installation.
4. Install filter assembly into pick-up tube recess. Install oil pan using new gasket and tighten pan bolts to specification. Add required amount of fluid to transmission through filler tube.
5. Start engine with gear selector lever in the "P" position and parking brake applied. Engage transmission in each gear ending in the "P" position. Check fluid level with vehicle warm and add fluid if necessary. DO NOT overfill.

TIGHTENING SPECIFICATIONS (OIL PAN BOLTS)

All Other Models

1. Engine must be off. Depress metal readjust tab on cable adjuster (located at cable support bracket on engine) and hold it in this position.
2. Move cable housing slider (away from throttle lever) until it stops and is completely against fitting. Release readjust tab. (Scheme 104)
3. Rotate throttle lever (by hand) to its full throttle position. Slider must move (ratchet) toward lever when lever is rotated to its full throttle position. Check cable for sticking and binding.

Scheme 104

GEAR SHIFT LINKAGE

1. Linkage should be adjusted so that engine cannot be started in any position except "P" or "N". If linkage is improperly adjusted, an internal hydraulic leak could occur causing internal clutch and/or band failure.
2. With selector lever in the "P" position, transmission parking pawl should engage rear/reaction internal gear lugs or output ring gear lugs. Pointer on indicator quadrant should line up properly with range indicators in all ranges.

Scheme 105

1. Position steering column gear selector lever in the Neutral gate notch. Loosen clamp screw from below vehicle and place transmission lever in Neutral. (Scheme 105)
2. Hold clamp flush against equalizer lever. Tighten clamp screw finger tight, then tighten to 21 ft. lbs. (28 N.m) without applying tension on either equalizer lever or selector rod. Ensure there is no tension on either equalizer lever or selector rod after adjustment is complete. (Scheme 105)

Scheme 106

1. Place gear selector lever in the "P" position. Raise and support vehicle. Ensure transmission is fully engaged in Park by rotating drive shaft until parking pawl engages preventing rotation of shaft.
2. Loosen cable adjusting nut on transmission lever to allow pin to slide freely. With gear selector lever and transmission lever both in Park, tighten cable adjusting nut to 15 ft. lbs. (20 N.m). (Scheme 106)

Floor Shift Cable ("F" & "Y" Bodies)

Place gear selector lever in the "N" position. Raise and support vehicle. Loosen cable adjusting nut at transmission lever. (Scheme 107) Ensure that transmission lever is in the Neutral position by rotating it clockwise to Park detent, then back (counterclockwise) 2 detents to Neutral. Tighten cable adjusting nut to 15 ft. lbs. (20 N.m).

Note. Lever must be held out of Park when tightening nut.

Scheme 107

Scheme 108

1. With gear selector lever in the "P" position and ignition key in "LOCK" position, gear selector lever should not be able to be moved to other gear positions. Ignition key should be removable from column.
2. With key in "RUN" position and gear selector lever in the "N" position, ensure key cannot be turned to "LOCK" position. If system does not perform as described in steps 1) and 2), go to step 3) for adjustment procedure.
3. If key cannot be removed in Park, snap connector lock button to up position. Move cable connector nose rearward until key can be removed from ignition. (Scheme 108) Snap lock button down.

RWD Models (Exc. "F" & "Y" Bodies)

Column shift models use a mechanical interference-type neutral start system. A wedge-shaped finger, attached to the ignition switch actuator rod, blocks movement of ignition switch to the "Start" position in all gear selector positions except "P" or "N".

Scheme 109

1. Disconnect negative battery cable. Remove gear selector knob. Remove center console cover. Place gear selector lever in the "N" position. If old switch is being readjusted, go to step 2). If new switch is being installed, go to step 4).
2. Align tang on switch with tang slot on shift control. (Scheme 109) Loosen switch mounting nuts. Rotate switch to align service adjustment hole with carrier tang hole.
3. Insert a.094" (2.34 mm) wire gauge into adjustment hole in top of switch. Rotate switch until pin drops to depth of.59" (15 mm). Tighten mounting nuts to 26 INCH lbs. (3 N.m). Vehicle should only start in Park or Neutral.
4. If new switch if being installed, insert switch tang in slot on shift control. Tighten mounting nuts to 26 INCH lbs. (3 N.m).
5. If holes do not align with shift control, ensure gear selector lever is in the "N" position. DO NOT rotate switch. Switch is pinned in Neutral. NOTE: If new switch has been rotated and pin broken during installation, use adjustment procedure in step 2).
6. If holes align with shift control, move gear selector lever out of Neutral to shear plastic pin.

TORQUE CONVERTER CLUTCH BRAKE SWITCH

The torque converter clutch brake switch must be adjusted to prevent vehicle stalling at idle due to the clutch remaining applied. Ensure brake pedal is fully released. Adjust plunger to just touch brake pedal lever.