Dacia Solenza (engine E7J). Manual - part 71

GENERAL

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Braking system purging

OPERATING  CONDITIONS

The vehicle is on ground, in rear axle half-loaded position.

CHECKING THE BRAKE SYSTEM SEALING

The vehicle will be idle running.
After purging the front and rear circuits, check if the level of brake fluid in reservoir is within

the MINI and MAXI marks. Press the brake pedal and maintain it constant for 30 s, during this
time the pedal shall not change its place.

In case leaking is occurring, check by visual inspection all the elements of the braking system,

eliminate leaking and restart a.m. operations.

GENERAL

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The influence of angles

The influence of different angles over the road behavior, stability and abnormal wear preventing

of the vehicles tires.

CAMBER
The exit from the tolerance field of the left or right wheel camber, may have as result:
-

tires external or internal edge wear (excessive positive or negative camber);

-

steering is deviating towards the camber angle is more pronounced (asymmetry), a deviation

from the trajectory is taking place, which must be corrected by means of the steering wheel (the
pronounced wear on the tire in question is occurring);

    CASTER

A larger difference of 1° between the right side caster and left side, may have as result:
- a deviation from the trajectory, which must be corrected by means of the steering wheel, the

abnormal tires wear (the pronounced wear on the tire in question is occurring), tough steering,
instability when turning.

PARALLELISM
This adjustment has little importance over  the vehicle road behavior.
Anyhow, note the followings:
-

a prominent closing may lead to tires external edges wear.

-

a prominent opening  may lead to tires interior  edges wear.

DIMENSIONS UNDER CARRIAGE BODY
These are  especially influencing the different angles of the steering geometry.
A vehicle, which has run a large amount of km, it will have under the carriage body, dimensions

smaller than a new vehicle.

This is the reason why some vehicle manufacturers, are prescribing, when the checking is

done with empty vehicle, different under carriage body dimensions and their respective places
where these values must be taken. Other vehicle manufacturers are recommending the suspension
compression by means of special (specific) tools or loading repartition in different places.

These different procedures (as performing ways) have as final purpose, the cancellation of the

vehicle suspension lowering, which has driven an important number of Km, compared with its
initial condition.

GENERAL

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Angles checking principle

PRELIMINARY CHECKING

Before starting the steering angles checking,  it will be necessary  to check the following points

and exclude the possible non-conformities.

1. Tires and rims checking, regarding:

- type and dimension;
- inflating pressure;
- wear degree.

2. Joints :

- elastic bearings and bushings condition;
- ball joints clearance;
- bearing clearance;
- steering wheel column clearance.

3. Tires runout and axial runout (compensation is to  be  performed by  means of the reading

instruments);

4. Dimensions symmetry under carriage body (suspension condition).

5. Manufacturer’s method : each vehicle manufacturer is prescribing the checking conditions,

loading repartition on axles, under carriage body dimensions presentation.

GENERAL

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Front axles checking and adjustment

THE SEQUENCE OF THE OPERATIONS

Due to the geometric conception of the front axle, the modification of one of one-side

angles (camber, ball joint, parallelism) has no major impact on the value of other side
angles (caster being the one with higher influence).

The modification of these angles does not occur during vehicle exploitation, but only as a

consequence of a vehicle accident.

In order to check the front axle angles, it is important to observe the following sequence:

- placing the vehicle on rotating plates;
- braked vehicle;
- suspension checking for placing the vehicle at its free height;
- ensuring that front wheels are such disposed for straight line driving;
- attachment of the optical devices on the vehicle, observing the manufacturer instructions.

REPARTITION CHECKING AND ADJUSTMENT

Check the  “X” dimension symmetry of the

connecting rods.

Reading of  the “A” value on the scale.