Dacia Pick-Up 1304/1305/1307. Manual - part 97

38

ELECTROVACUUMATIC CONTROL SYSTEM

4X4 COUPLING

ELECTROVACUUMATIC CONTROL ADJUSTMENT

Suspend the vehicle on  an  elevator.

Dismount the fixing lock pin of the connection bolt (8) between the capsule axle and the

control lever (6), then remove the bolt from its place.

Rotate the front right wheel and set the positions coupled-uncoupled acting upon the front

transmission control axle. The front transmission control axle stroke = 11,5 mm.

Operate the  front transmission axle (7) in the position uncoupled, then rotate the threaded

bushing (9) placed on the capsule axle, so that the hole from the capsule axle fork is correspond-
ing with the hole from the control lever.

Place the bolt (8) in this position and ensure it by means of the lock pin.
Check the uncoupled position of the front transmission; the uncoupling condition is performed

when the front right wheel will be freely turning and in the gearbox no gears engagement noises
can be  heard.

Block the threaded bushing position from the capsule axle by means  of the near by nut.
For the good operation of this system, in case of the reparation, the following requirements

must be observed:

-The system sealing condition (  piping, vacuum  tank,  electric valves, vacuum

capsule) must be performed at a depression of 0,07 Mpa = 0,7 bar, which must be maintained
for 30 seconds.

-The vacuum valve – is to be mounted so that the arrow marked on its body to be

oriented from the electric valves towards the inlet manifold.

-The tightening moment for vacuum capsule attachment = 1,8 – 2 daN.m
-The tightening moments for capsule support attachment are :

-1,8 – 2 daN.m for the screws M8 x 1,25 x 18 and
-1,9 – 2,2 daNm for the screw M10 x 1,5 x 20

-The tightening moment of the vacuum tank attachment screw =  0,32 – 0,6 daN.m.

38  - 3

ELECTROVACUUMATIC CONTROL SYSTEM

4X4 COUPLING

38

-The vacuum piping connecting mode between the electric valves and the vacuum

capsule is according to the drawing: the pipe from the vacuum capsule axle is connected to
the electric valve having the pipes on both sides of its body, and the pipe from the opposite
part of the capsule axle is to be connected to the electric valve having the pipes on the
same side of its body.

-The connecting mode of the electrovacuumatic coupling control wiring is as per next

diagram, where the following components may be identified:

1.Intermediary relay
2.Instruments panel
3.Right connection plate ( +DC ).
4.4 x 4 switch
5.Electric valves connectors
6.Vacuum capsule

38  - 4

ELECTROVACUUMATIC CONTROL ADJUSTMENT

38

ELECTROVACUUMATIC CONTROL SYSTEM

4X4 COUPLING

D

ISMO UNTING

Suspend the vehicle on an elevator.
Disconnect the vacuum capsule connector.
Disconnect the vacuum hoses from the capsule.
Dismount the lock pin and remove the bolt which is connecting the capsule axle with

the GB control lever.

Dismount the capsule attachment nuts on the support.

38  - 5

 VACUUM CAPSULE

R

EMOUNTING

Perform the dismounting operations in reverse order.

NOTE:

Observe the connecting position of the hoses to the capsule, from corresponding

electric valves. After capsule replacement, perform the electrovacuumatic control
adjustment.

ELECTROVACUUMATIC CONTROL SYSTEM

4X4 COUPLING

38

D

ISMO UNTING

Disconnect the connector from the electric valve.
Disconnect the hoses from the electric valve.
Dismount the electric valve attachment screw.

R

EMO UNTING

Perform the dismounting operations in the reverse order.

NOTE:
 Observe the connection position of the hoses to the electric valve, bef

ore disconnecting.

38  - 6

ELECTROVALVE