All about Ford Mondeo

7 Front suspension lower arm - removal, overhaul and refitting
Suspension and steering systems / 7 Front suspension lower arm - removal, overhaul and refitting


Removal
1 Apply the handbrake, jack up the front of the vehicle and support it on axle stands.

Remove the appropriate wheel.

2 If removing the right-hand side lower arm, remove the auxiliary drivebelt cover where necessary.

3 Unscrew and remove the nuts and bolts securing the lower arm to the subframe (see illustration).

7.3 One of the nuts and bolts securing the lower arm to the subframe
7.3 One of the nuts and bolts securing the lower arm to the subframe

4 Unscrew the nuts and disconnect the antiroll bar links from the anti-roll bar on both sides. Swivel the anti-roll bar upwards away from the lower arm.

5 Extract the split pin from the track rod end balljoint nut. Unscrew the nut, and detach the rod from the arm on the steering knuckle using a conventional balljoint removal tool.

Take care not to damage the balljoint seal.

6 Remove the clip securing the driveshaft inner gaiter to the inner CV joint, and disconnect the gaiter from the CV joint housing. This is necessary to prevent damage to the gaiter when the steering knuckle is moved outwards to remove the lower arm.

7 Note which way round the front suspension lower arm balljoint clamp bolt is fitted, then unscrew and remove it from the knuckle assembly. Lever the balljoint down from the knuckle; if it is tight, prise the joint open carefully using a large flat-bladed tool. Take care not to damage the balljoint seal during the separation procedure. Support the inner end of the driveshaft on an axle stand (see illustrations).

7.7A Unscrew the lower arm balljoint clamp bolt . . .
7.7A Unscrew the lower arm balljoint clamp bolt . . .

7.7B . . . and disconnect the balljoint from the knuckle
7.7B . . . and disconnect the balljoint from the knuckle

8 Remove the lower arm from the subframe, and withdraw it from the vehicle.

Overhaul
9 Examine the rubber bushes and the suspension lower balljoint for wear and damage. The balljoint may be renewed as described in Section 8. The rubber bushes may be removed using a press, or a length of metal tubing together with a long bolt, washers and nut.

10 Note that the front and rear bushes are different. The front one has a solid rubber bush with a cylindrical inner tube, whereas the rear one has a voided rubber bush with a barrel-shaped inner tube (see illustration).

7.10 Front suspension lower arm bushes
7.10 Front suspension lower arm bushes

1 Front bush
2 Cylindrical inner tube 3 Rear bush
4 Barrel-shaped inner tube 5 Front of vehicle

11 Press the new bushes into the lower arm, using the same method as used for removal.

Note that, when fitting the rear bush, the voids must be in line with the front bush location.

On later models, a pip on the rear bush must be aligned with a triangular alignment mark on the arm.

Refitting
12 Locate the lower arm on the subframe, and insert the mounting bolts. Fit the nuts and tighten them in stages, first to the specified torque and then through the angle specified.

13 If removed, locate the tripod on the inner end of the driveshaft in the CV joint housing, then refit the gaiter, together with a new clip.

14 Refit the front suspension lower arm balljoint to the knuckle assembly, and insert the clamp bolt with its head facing forwards.

Refit the nut and tighten to the specified torque.

15 Refit the track rod end balljoint to the steering knuckle, and tighten the nut to the specified torque. Check that the split pin holes are aligned; if necessary, turn the nut to align the holes, making sure that the torque wrench setting is still within the specified range. Insert a new split pin, and bend it back to secure.

16 Swivel the anti-roll bar down, then reconnect the links to the bar and tighten the nuts to the specified torque.

17 If working on the right-hand side, refit the auxiliary drivebelt cover where necessary.

18 Refit the wheel, and lower the vehicle to the ground.


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