Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE197098 ENG CD TS, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICALENGINE REMOVALCADILLAC1968-70 ALL MODELS
1970 Oldsmobile 98 Eng CD TS, Automatic Trans
1968-70 All Models
1970 Oldsmobile 98 Eng CD TS, Automatic TransSECTION 1968-70 All Models
- Disconnect negative battery cable, and remove hood. Remove carburetor air cleaner, and automatic lever control hoses (if equipped).
- Disconnect carburetor linkage at accelerator pedal lever, and Cruise Control linkage (if equipped). Remove screws securing radiator shroud and remove shroud.
- Remove clamp holding upper radiator hose to cradle. Disconnect positive wire from ignition coil, and single connection under ignition coil. Disconnect wires from downshift switch.
On air conditioned cars, disconnect compressor lead at double connector and remove black wire from connector.
- Remove clamps securing wiring harness to left rocker arm cover, place harness out of the way. Remove fan, distributor cap, and spark plug wires. On 1969 Eldorado, remove studs from water pump shaft hub (for clearance).
- Disconnect power brake and vacuum modulator lines from fitting on rear of intake manifold. Remove vacuum line from fitting on right rear of intake manifold. Remove Cruise Control Power Head (if equipped).
- Remove fuel line (between filter and carburetor). Disconnect right ignition wires (at plugs) and place out of the way. Disconnect A.I.R. hose (at check valve).
On air conditioned cars, partially remove compressor (position out of the way) and remove idle speed-up hose (white striped), from idle speed-up device.
- Partially remove power steering pump and remove power steering cooler, position both out of the way. Drain radiator and remove overflow hose. On 1969 models, remove green hose from thermo vacuum switch at cowl connection.
- On 1969 Eldorado, remove one screw holding transmission filler tube to cylinder block. Disconnect upper radiator hose at radiator fitting and thermostat housing. Loosen A.I.R. pump and remove belt. Remove water pump pulley and generator. Remove wiring harness from right rocker arm cover, position out of the way.
- Remove two upper transmission to engine screws. Disconnect heater hose from water control valve. Remove two screws securing right air deflector to lower radiator cradle and disconnect fuel line from fuel pump and vapor return line from fuel filter. Plug lines.
On air conditioned cars, remove power servo from heater air selector, except 1969 Eldorado. On 1969 air conditioned cars (except Eldorado), remove blower relay from heater air selector.
- Disconnect ground straps from cowl at rear of heads and disconnect wiring connector from temperature sending unit. Remove tie struts.
- Position a lifting bracket to rear intake manifold attaching screws on left rear of engine (Cruise Control Equipped only). Bracket is in place on all others.
- Raise car and place on jack stands. Remove two nuts securing each front engine mount to frame, and remove oil filter. On Eldorado, remove right output shaft.
- Remove three screws securing starter motor to engine, allow starter to hang by cables. Remove four screws securing converter cover to transmission bellhousing and remove inspection pan.
- Disconnect exhaust pipes from manifolds. Support exhaust system with jack stand. Connect a chain to lifting brackets and attach hook of a hoisting device to chain.
- Support transmission at oil pan with a floor jack and remove four lower transmission to engine screws. Remove three screws securing converter to flex plate.
- Remove lower radiator hose. Pry engine forward while raising it as far as possible. Lower transmission and again raise engine, remove flex plate from engine and lift engine free of car.
CADILLAC - TIGHTENING SPECIFICATIONS
| 1964 Bolt or Nut | Torque Ft. Lbs. |
|---|---|
| Front Support Mount to Crankcase | 30 |
| Front Support Mount to Frame | 90 |
| Side Support Cushion Mount | |
| to No. 3 Crossmember | 25 |
| No. 3 Crossmember to Frame | 30 |
| Rear Support Mount to Extension Housing | 55 |
| Rear Support Mount to Rear Engine Support | 55 |
| Rear Engine Support to Frame | 30 |
| 1965-68 (EXC. ELDORADO) Bolt or Nut | Torque Ft. Lbs. |
|---|---|
| Front Support Mount to Cylinder Block | 30 |
| Rear Engine Support Crossmember to Frame | 20 |
| Rear Support Mount to Crossmember | 50 |
| Rear Support Mount to Transmission | 55 |
| Front Support Mount to Frame | 60 |
| 1969-73 ELDORADO Bolt or Nut | Torque Ft. Lbs. |
|---|---|
| Front Support Mount to Cylinder Block | 21 |
| Rear Engine Support Crossmember to Frame | 20 |
| Rear Support Mount to Crossmember | 45 |
| Rear Support Mount to Transmission | 50 |
| Front Support Mount to Frame | 52 |
| 1967-68 ELDORADO Bolt or Nut | Torque Ft. Lbs. |
|---|---|
| Front Mount Support Bracket to Crankcase | 30 |
| Front Support Cushion to Frame Stud | 30 |
| Front Support Cushion to Engine Bracket | 32 |
| Rear Support Bracket to Transmission | 50 |
| Rear Support Assembly to Bracket | 50 |
| Rear Support Assembly to Frame | 50 |
| 1969-73 (EXC. ELDORADO) Bolt or Nut | Torque Ft. Lbs. |
|---|---|
| Front Mount Support Bracket to Crankcase | 21 |
| Front Support Cushion to Frame Stud | 35 |
| Front Support Cushion to Engine Mount Bracket | 57 |
| Rear Support Bracket to Transmission | 50 |
| Rear Support Assembly to Bracket | 46 |
| Rear Support Assembly to Frame (Bolt) | 52 |
| Rear Support Assembly to Frame (Nut) | 52 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.