Dacia Pick-Up 1304/1305/1307. Service manual — part 68

GENERAL

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ADJUSTMENT POSIBILITIES

Only the following parameters may be adjusted:

- the caster angle, by means of the rod;
- the parallelism and the distribution, from the connecting rod pipe;
- the steering gear box position, by means of the eccentrics (positioning will be adjusted

only if the steering gear box has been dismounted DIR 487).

PRELIMINARY CHECKINGS

Before checking and adjustment of the front axle geometry, perform the followings operations:
The checking of tires concerning:

- dimensions;
- air pressure;
- the state of wear.

NOTE:
The tires must be of same type, with the same state of wear, air pressured at the

prescribed pressure.

The check of joints

- the wear of elastic bushings;
- ball joints clearance;
- connecting rod clearance;
- wheels bearings clearance.

STEERING PRELIMINARY CHECKINGS AND ADJUSTMENT

POSSIBILITIES

GENERAL

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FRONT AXLE CHECKING -ADJUSTMENT

THE SEQUENCE OF THE OPERATIONS

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

(castor angle, camber angle,ball joints) has no major impact on the value of other side

angles (the parallelism being directly influenced).

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

consequence of a vehicle accident.

It is important to observe the following sequence:

- placing the vehicle on rotating plates;
- braked vehicle;
- check suspension for placing the vehicle at its free height;
- establishing of the steering central point and steering box lock;
- fixing of the optical devices on the vehicle, as per manufacturer instructions.

ESTABLISHING OF THE STEERING CENTRAL POINT

In order to establish the steering box central point, bring gear rod in the position

where C = 65 mm .

This value is obtained when a rivet of the elastic coupling is upward orientated.
The performing of one checking or adjusting front axle operation implies location of the steer-

ing box point in order to avoid errors when measuring.

GENERAL

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Check the connecting rods symmetry “X”.

Read the value “A” on the scale.

REPARTITION CHECKING AND ADJUSTMENT

FRONT AXLE CHECKING -ADJUSTMENT

GENERAL

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FRONT AXLE CHECKING -ADJUSTMENT

Case 1. The symmetry dimension “X” is correct:

- the value “A” is equal distributed.

Case 2. The symmetry dimension “X” is incorrect:

- read the value “A” on each side, mark it, calculate an average value, establishing the

value for each side.

E

XAMPLE

Right side value: A = 16;
Left side value: A = 10;
16 + 10 = 26

; 26 : 2 = 13.

Operating the steering rods tie bar, restore the same value for both side A = 13.

In this position, lock the rotating plates to zero point.

Check in order: camber angle, caster angle, parallelism, ball joint angle.

PARALLELISM ADJUSTMENT

Loosen the lock nut (1) maintaining the

tie rod of steering connecting rod (2) in a

fixed position.

Act upon the rod of steering connecting

rod taking into account the rotation sense of

latter in order to obtain the convergence or

divergence and also the fact that one of its

complete rotation leads to an axial displace-

ment of 1,5 mm.

After obtaining the correct parallelism,

tighten the lock nut at a moment of 5 daNm.

OBSERVATION: Three situations may appear:

P

ARALLELISM

R

EPARTITION

C

O RRECTION

WHICH

MUST

PERFO RMED

1.CORRECT

2.INCORRECT

3.INCORRECT

INCORRECT

CORRECT

INCORRECT

It is performed the same number of connecting rod rotation
on left side and right side until obtain the same value ”A”.

Adjust the parallelism at the same value for left and right side
ensuring in the same time, the same value “A” on both sides.

First operate on repartition in order to balance the value

“A” on each side, than adjust the parallelism (see Case 2}.

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