Dacia Pick-Up 1304/1305/1307. Manual — part 93

37

MECHANICAL ELEMENTS CONTROLS

TIGHTNESS CHECKING

The tightness of the servobrake is checked on the vehicle, with the hydraulic circuit

under operation.

Connect the vacuum meter between the

servobrake and the inlet collector by means
of a “ T ” type connector.

The connecting hose of the vacuum

meter shall be as short as possible.

Start the engine and let it idle run for

1min.

Block the air suction hose by means of

the MOT 453 device.

Stop the engine.
Read the indicator.

SERVOBRAKE

If air suction lowers with more than 33 mbar (25 Hg) in 15’period, it means there is a

loss:at the retainer valve - replace the valve or at the servobrake membrane - replace the
servobrake.

Dismount the MOT 453 device.
Dismount the vacuum hose.
Connect the air suction hose to the servobrake.
If the servobrake does not work, but the braking system is working, then the effort on

the brake pedal is increased.

37- 7

MECHANICAL ELEMENTS CONTROLS

37

AIR FILTER REPLACEMENT

D

ISMO UNTING

Dismount the servobrake off the vehicle.
Loosen the lock nut and dismount : the coupling brake and the lock nut.
Remove the old filter, F.

R

EMO UNTING

AIR FILTER - SERVOBRAKE RETAINER VALVE

Mount the new filter.
Mount:

- the lock nut;
- the coupling fork.

Adjust the value L.
Tighten the lock nut on the fork.
Mount the servobrake on the vehicle.
Purge the braking circuit if necessary.

SERVOBRAKE RETAINER VALVE REPLACEMENT

The operation shall be performed without dismounting the servobrake off the vehicle.

D

ISMO UNTING

Disconnect the air suction hose.
Dismount the valve by rotating and then

pulling it.

Dismount the retainer valve gasket.

R

EMO UNTING

Check the state of the retainer valve gasket;

replace it if necessary.

Mount the retainer valve gasket.
Mount the new retainer valve.
Connect the air suction hose.

37 - 8

37

MECHANICAL ELEMENTS CONTROLS

HAND BRAKE

Lever on floor, mechanical controlled, operating on the rear wheels.

T

IGH TENING

MO MENTS

( daNm

)

The attachment screws of the hand brake lever assembly on the floor

1,2

The primary cable tightening nut on swing bar

2

ADJUSTMENT

With rear wheels suspended and hand brake lever released ,tighten the castle nut M

until the shoes gaskets come lightly into contact with the brake drum.

Tighten the lock nut N at the required moment.
The adjustment shall be performed so that is insuring a hand brake lever stroke of min.7

teeth until the blocking of all wheels.

The adjustment shall be performed anytime the shoes wear is requiring it.
The hand brake adjustment shall be performed only after the rear brake adjustment.

37 - 9

M

N

MECHANICAL ELEMENTS CONTROLS

37

HANDBRAKE CONTROL LEVEL

D

ISMO UNTING

Disconnect the battery.
Lift the vehicle by means of an elevator.
Release the hand brake.
Disconnect the primary cable from the

rocking joint.

Dismount the hand brake ornament case.
Dismount the screws that attach the hand

brake lever to the floor.

Release the hand brake lever.
Dismount:
- the locking ring of the primary cable fork

shaft;

- the primary fork shaft;
- the hand brake lever.

R

EMO UNTING

Grease the primary cable fork shaft with special MoS2 grease.
Connect the primary cable.
Mount the hand brake lever.
Mount the hand brake ornament case.
Adjust the hand brake.
Get down the vehicle on ground.
Connect the battery.

37 - 10