Removal and replacement of lower shock bushing while still on car?

have your suspension checked over. springs/shock absorbers/anti roll bars etc

crazy glue

to remove lower control arm bushings you need to remove control arm from vechicle have control arm bushings pressed out.you need to remove disconnect torsion bar,remove shock absorber,disconnect stabilizer bar link, remove axle half shaft, remove the lower ball joint, remove control arm mounting bolts, then remove lower control arm.

possibly worn out shock absorbers. however could be top strut mounts , lower ball joint bushes, rear axle bushes , subframe bushes best to get it checked out at your local garage

bleed out the system, raise vehicle and support on jackstands, remove upper and lower mounting bolts and remove shock. installation is reverse of removal, coat new mount bushings with a film of oil to prevent squeaks.

opper Control Arm Bushings

• To access the upper control arm, remove the shock absorber and the strut bar. Also, disconnect the sway bar from the lower control arm, if your particular Ram model is equipped with it. After that, you can hold the coil spring in place with a spring compressor.
  Secure the wheel hub assembly to the chassis using a wire before you disconnect the upper ball joint. This will prevent damage to the brake hose. When ready, release the ball joint using a ball-stud loosening tool (see Resources).
  The upper control arm mounts to the chassis with a cam bolt assembly. Once removed, you can place the control arm on a vise and remove the bushings using a bushing service tool (see Resources). When installing the new bushings, do not use any lubricant but make sure the flange on the bushing end seats properly on the arm bore. Then re-install the upper control arm. When finished, take your Dodge vehicle to a good shop to align the front suspension.
  

Lower Control Arm Bushings

• Remove the shock absorber and strut bar. If your particular model is equipped with a sway bar, disconnect it from the lower control arm.
  Secure the coil spring with a spring compressor and release the lower ball joint from the wheel/hub assembly using a ball stud loosening tool (see Resources).
  Now you can release the lower control arm by removing the rear mounting bolts. Remove the bushings with a bushing service tool (see Resources). When installing the new bushings, do not use lubricant and make sure they seat properly on the control arm bore. Then replace the lower control arm. When finished, take your Dodge vehicle to a good shop to align the front suspension
  

Support the rear suspensionfrom under the lower suspension arm.
Remove shock absorber upper nut, washer and bushing
Remove lower shock absorber nut and washer.
Remove shock absorber.
Reverse steps to install.

REMOVAL & INSTALLATION

1. Support the vehicle safely on jackstands. Support it at a height which will allow sufficient room to reach the upper shock absorber mount.
2. Remove the wheel.
3. Remove the upper shock nut, washer and bushing.
4. Remove the lower mounting bolt(s) and remove the shock from the vehicle.
5. Install the shock absorber in the vehicle and loosely tighten the upper shock absorber nut. Make sure the install the bushings and washers before installing the upper nut.
6. For 4WD vehicles, install the shock absorber so that the white paint mark at the lower side of the shock absorber faces the outer side of the vehicle. Install the lower shock absorber bolt(s). On 1992-95 Montero torsion bar suspensions, tighten the single lower mounting bolt and nut to 65-76 ft. lbs. (88-103 Nm). On all other vehicles (whether torsion bar or coil spring suspensions), the two lower shock absorber mounting bolts should be tightened only to 7-10 ft. lbs. (9-14 Nm). Fig. 1: Install the shock absorber so that the white mark faces toward the outside of the vehicle - 4WD vehicles, except 1992-95 Monteros
   Fig. 2: Install the bushings, washers and nuts in the order shown - except 1992-95 Monteros
   
   
7. On 1992-95 Monteros, tighten the shock absorber installation nut so that the dimensions shown in the illustration ( A and B) are at the standard values. These standard values are: A - 0.04-0.08 in. (1-2mm), B - 0.06-0.10 in. (1.5-2.5mm). WARNING
   When tightening the nut, be careful not to bend the stud pin of the washer assembly.
   
8. On all other vehicles, once the lower mounting bolt(s) are tightened, tighten the upper shock absorber mounting nut all the way to the end of the thread on the shock absorber stud, then tighten the locking nut to 9-13 ft. lbs. (12-18 Nm).
9. Install the wheel.
10. Lower the vehicle to the ground. Fig. 3: When installing the upper shock nuts on 1992-95 Monteros, make sure measurement A is 0.04-0.08 in. (1-2mm)
    Fig. 4: When installing the upper shock assembly, make sure its components are positioned as shown - 1992-95 Monteros
    

This is for the 2WD model:

2-Wheel Drive

1. Raise and support the front of the vehicle safely using jack stands.
   
2. Using an open end wrench, hold the shock absorber upper stem to prevent it from turning, then remove the upper stem retaining nut, the retainer and rubber grommet.
   

Common front shock absorber mounting-2WD vehicles

1. Remove the shock absorber-to-lower control arm retaining bolts and lower the shock absorber assembly from the bottom of the control arm.
   
2. Inspect and test the shock absorber; replace it, if necessary.
   

To install:

1. Fully extend the shock absorber stem, then push it up through the lower control arm and spring so that the upper stem passes through the mounting hole in the upper control arm frame bracket.
   
2. Install the upper shock absorber nut and tighten to 100 inch. lbs. (11 Nm) on 1994 models 145 inch lbs. (16 Nm) on 1995 models, 54 ft. lbs. (73 Nm) on 1996 models, or 106 inch lbs. (12 Nm) on 1997-99 models while holding the stem with an open end wrench. Be careful not to crush the rubber bushing.
   
3. Install the shock absorber-to-lower control arm retaining bolts and tighten to 20 ft. lbs. (27 Nm) on 1994-95 models and 54 ft. lbs. (73 Nm) on 1996 models, or 22 ft. lbs. (30 Nm) on 1997-99 models.
   
4. Remove the jack stands and carefully lower the vehicle.
   

i don't think you have to do any repairs from the top end. I will list most fromFord shop manual. Please rate as Fixya if this answers your questions. Please report back. Good luck.

Section 04-02: Suspension and Wheel Hubs, Rear 1994 Town Car, Crown Victoria/Grand Marquis. Workshop Manual
REMOVAL AND INSTALLATION Spring Rear
Removal

1. Position a hoist under the rear axle housing, and raise the vehicle. Refer to Section 00-02 . Place jackstands under frame side rails.

1. Remove rear stabilizer bar as outlined.

1. Disconnect the lower studs of the two shock absorbers from the mounting brackets on the rear axle assembly .

1. Unsnap the RH parking brake rear cable and conduit (2A635) from RH upper arm retainer before lowering the rear axle assembly .

1. Lower the hoist and axle housing until the rear springs are released.

1. Remove rear spring and rear spring center mounting insulators (5741) from vehicle.
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Shock Absorber Removal
Raise the vehicle on a hoist. 1. To assist in removing the upper attachment on shock absorbers using a plastic dust tube, place an open end wrench on the hex stamped into the dust tube's metal cap. For shock absorbers with a steel dust tube, simply grasp the tube to prevent stud rotation when loosening the retaining nut.

1. Remove the shock absorber retaining nut, washer, and insulator assembly from the stud on the upper side of the frame. Discard nut. Compress the shock absorber to clear the hole in the frame, and remove the inner insulator and washer from the upper retaining stud.
2. Remove the self-locking retaining nut, and disconnect the shock absorber lower stud from the mounting bracket on the rear axle tube.
3. Perform Shock Absorber Checks. Refer to Section 04-00 to determine shock absorbers performance.

Installation

1. Properly prime the new shock absorber . Refer to Section 04-00 , Shock Absorber Checks.

1. Place the inner washer and rear spring insulator (5536) on the upper retaining stud, and position the shock absorber so that the upper retaining stud enters the hole in the frame. While holding the shock absorber in this position, install a new rear spring insulator , washer and nut assembly on the upper side of the upper frame. Be sure to seat the rear spring insulator in the frame attaching hole. Tighten nut to 34-46 Nm (25-34 lb-ft).

1. Extend the shock absorber , and place the lower stud in the mounting bracket hole on the rear axle assembly housing. Install a new self-locking retaining nut. Tighten nut to 76.5-103.5 Nm (56-76 lb-ft).

1. Lower vehicle.

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Arm Lower
Removal
Refer to the illustration in Description and Operation. NOTE: To improve rear axle assembly noise and vibration concerns, the rear suspension should be fastened to the frame and rear axle assembly at the curb height position.
NOTE: If one rear suspension lower arm requires replacement, also replace the opposite rear suspension lower arm .
WARNING: TURN REAR SUSPENSION LEVELER COMPRESSOR SWITCH OFF (IF SO EQUIPPED).
NOTE: If both rear suspension arm and bushings and both rear suspension lower arms are to be removed at the same time, remove both rear springs as outlined under Rear Spring Removal. For air spring removal, refer to Section 04-05 .

1. Mark rear suspension shock absorber relative to protective sleeve with the vehicle in a static, level ground condition.

1. Remove rear stabilizer bar as outlined.

1. Raise the vehicle on a hoist, and place jackstands under the rear axle assembly . Refer to Section 00-02 .

1. Lower the hoist until the shock absorbers are fully extended to relieve rear spring pressure.

1. Support rear axle assembly under differential pinion nose as well as under rear axle assembly .

1. Remove and discard the lower arm pivot bolt and nut from the axle bracket. Then, disengage the rear suspension lower arm from the bracket.

1. Remove and discard the pivot bolt and nut from the frame bracket, and remove the rear suspension lower arm .

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Upper
Removal
SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Suspension Bushing Service Set T79P-5638-A1, A2 and A5 Rear Axle Control Arm Bushing Tools T86P-5638-AH
WARNING: TURN OFF REAR SUSPENSION LEVELER COMPRESSOR SWITCH (IF SO EQUIPPED).

1. Raise the vehicle, and support the frame side rails with jackstands. Refer to Section 00-02 .
2. Support the rear axle assembly .
3. Lower the rear axle assembly , and support the rear axle assembly under differential pinion nose as well as under rear axle assembly .
4. Unsnap parking brake rear cable and conduit from upper arm retainer.
5. Remove and discard the nut and bolt retaining the rear suspension arm and bushing to the rear axle assembly housing. Disconnect the rear suspension arm and bushing from the housing.
6. Remove and discard the nut and bolt that secures the rear suspension arm and bushing to the frame bracket, and remove the rear suspension arm and bushing . If upper arm rear bushing is to be replaced, use Suspension Bushing Service Set T79P-5638-A and Rear Axle Control Arm Bushing Tools T86P-5638-AH and the following procedure:
7. Place the upper arm rear bushing remover tool in position, and pull bushing out. Using Suspension Bushing Service Set T79P-5638-A install bushing assembly into bushing ear of rear axle assembly.

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Stabilizer Bar
WARNING: TURN OFF REAR SUSPENSION LEVELER COMPRESSOR SWITCH (IF SO EQUIPPED).
Removal

1. Raise vehicle on hoist, and place jackstands under the frame side rails. Refer to Section 00-02 .

1. Lower the hoist and rear axle assembly housing until the shock absorbers are fully extended.

1. Disconnect rear stabilizer bars from rear stabilizer bar link and bushing (5C488) . Remove bolts and stabilizer bar bracket (5486) retaining rear stabilizer bar to rear axle assembly .