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
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