2004 DACIA SUPERNOVA Repair Manual

36
STEERING ASSEMBLY
36 - 3
S
TEERING BOX
DISMOUNTING
Loosen the screws of the wheel;
Lift the front part of the vehicle;
Dismount the wheel;
Di smount t he ba ll joints of the steering
auxiliary connecting rods. Di
smount the attachment scre w of the
steering wheel shaft (1) from the steering box.
Dismount the steering box attachment screws (2) on the cross member.
Dismount the steering box together with the steering auxiliary connecting rods.
NOTE
Do n ot ever dismount the axial ball joints from the rack, unless they need to be
replaced.
REMOUNTING
Perform the dismounting operations in the reverse order:
Grease the joints with special grease containing MoS2.
Check the condition and the attachment of the protection bellows.
Tighten at the required moment the nuts of the steering auxiliary connecting rod - in the case
of the dismounting of an auxiliary connecting rod. Mount the steering box and the auxiliary connecting rods assembly, on the vehicle.
Check the parallelism.
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36
STEERING ASSEMBLY
36 - 4
PUSHER
PUSHER ADJUSTMENT
The pusher adjustment shall be performed taking into consideration, the wear degree of the
rack and the pusher.
1. Pusher
2. ”0” ring
3. Pusher spring
4. Assembled threaded plug
When mounting distribute 23 + / - 5cmc
of grease II Li Ca Pb with MoS2 for: the
rack, the gear, the pusher and the spring, the
inner surface.
ADJUSTEMENT METHOD
The clearance adjustment of the pusher is performed by tightening the threaded plug at the
required moment of 1+/-0,2 daNm and unscrewing it ˘ round.
The moment for the gear rotation will be
about 0,15 daN.m (maximum accepted 0,25
daN .m ) on the whole length of the rack or
the rack gliding effort of 25 daN (maximum
accepted 40 daNm ) without rigid points.
Securing of the unscrewing of the threaded
plug is perform ed by the distort ion of t he
securing element of the assembled threaded
plug towards the casing in two antipodal
points.
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36
STEERING ASSEMBLY
36 - 5
NOISE ABSORBER BEARING
DISMOUNTING
Loosen the screws of the wheel;
Lift the front part of the vehicle
Dismount the wheel on the opposite side of the steering column;
Dismou nt :
-casing protection bellows;
-the steering auxiliary connected rod.
Rotate the steering wheel until the rack is withdrawn.
Remove, by means of a screwdriver the noise absorber bearing.
REMOUNTING
Carefully clean t he rack and the noise absorber bearing seat and grease with special grease
containing MoS2.
In the same way as at the dismounting, place back the noise absorber bearing paying attention
to fix the three pins (A) in their seats.
Rotate the steering wheel in the opposite direction until the rack stands out the bearing.
Remount on the rack: - the steering auxiliary connecting rod (mount a new safety washer);
- protection bellows.
Check and adjust the parallelism, if necessary.
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36
STEERING ASSEMBLY
36 - 6
BELLOWS
DISMOUNTING
Lift the front part of the vehicle.
Dismount the wheel.
Loosen the attachment nut (5) of the auxiliary connecting rod ball joint to the steering knuckle
s upport and depress the ball joint (4).
Remove the attachment collar (6) of the bellows on the steering casing box.
Remove the bellows
(7) from the steering casing box.
Straighten the edges of the safety washer.
Unscrew the steering connecting rod from the rack, using the special wrench and remove it
out together with the safety washer (2) and the locking washer (1).
1. Locking washer
2. Safety washer
3.Assembl ed e nd of t he a uxi lia ry
connecting rod 4.Assembled auxiliary connecting rod
fu nnel
5. Attachmen t nut
6. Attachment collar of the bellows
7.B ellows
REMOUNTING
Fold the bellows towards the connecting rod funnel.
Before assembling the rack with the steering auxiliary connecting rods (the threaded parts
being free from any tra ces of grease) a pply a layer of FIXAMED R 58- C.S. 1/82 on the
threaded parts of the auxiliary connecting rods. Place the safety washer and t he l ocker washer (in t his order) on the threaded shaft of the
steering auxiliary connecting rod, passing the curved pin of the safety washer through the slot of
the locking washer. Screw the steering auxiliary connecting rod in the rack.
Tighten the joint body at the moment of 5 daNm by means of the 6902-4105 special wrench.
Bend the safety washer in the opposite part to t he pin in at l east one of the cuts made on the
ball joint body. Mount the bellows in its channel from the steering casing.
Mount the auxiliary connecting rod funnel in the steering knuckle support.
Check the tightening of the nut (5) at a moment of 4daNm,on the vehicle.
1
2
3
4
5
67
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36
STEERING ASSEMBLY
36 - 7
I.
DIAGNOSTIC OPERATION
A. Incidents occurring at the deformable lower shaft of the steering column:
a) Vibrations and steering wheel clearance (I1, I2, I3);
b) Noises in steering system operation (I2, I3);
c) Heavily turning, blocking tendencies (I4)
B. Corrective measures which ar e i mperative to r esolve the defe cts:
Incident Incidents (failures) e stablished Correcti ve measures
code
I
1Clearance in one or both cardanic joints. Replace the assembled deformable lower shaft
I
2Clearan ce in the splinted assem bled area between Replace the assembl ed deformable
ass. intermediary shaft and ass. intermediary pipe. lower shaft
I
3Clearance between lower bushing and ass. Replace the assembl ed deformable
intermediary shaft. lower shaft
I
4T ough points of the cardanic joint, blocking Replace the assembl ed deformable
tendencies. lower shaft
TIGHTENING MOMENTS (daNm)
Attachm ent screws of lower shaft connection 1,4
213
D
EFORMABLE LOWER SHAFT
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36
STEERING ASSEMBLY
36 - 8
DISMOUNTING
Disconnect the battery.
Mark the steering wheel position (straight line driving position).
Dismount the connection screw (1) between the deformable lower shaft and the steering
wheel shaft. Loosen the screws of the front left wheel.
Lift the vehicle by means of a two-column elevator.
Dismount the left front wheel.
Dismount the connection screw (2) between the deformable lower shaft and the gear shaft
of the steering box. Dismount the sealing gasket (3) from the cowl panel.
Extract the lower shaft.
ATTENTION !
It is forbidden the damaging of the lower shaft and of the connection parts from the
steering system (steering box gear, steering wheel shaft) when dismounting/remounting
the lower shaft.
REMOUNTING
Clean the steering box gear shaft and grease it with grease UM 185 Li2 or UM 180 Li2.
Perform the dismounting operations in the reverse order. Tighten the connection screws between
the lower shaft and the steering box gear shaft, consequently between the lower shaft and the
steering wheel shaft to the required moment of 1.4 daNm.
D
EFORMABLE LOWER SHAFT
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36
STEERING ASSEMBLY
36 - 9
S
TEERING WHEEL POSITION ADJUSTMENT
The steering wheel adjustment on vertical, is performed as follows:
- control downwards the adjustment handle ( 3 ) placed under the steering wheel lower
casing.
-bring the steering wheel in the desired position and maintain it in this position
- control upwards the adjustment handle.
It is forbidden t o perform this adj ustment during driving.
1. Steering lower shaft
2. Lower bushing
3. Adjustment handle
4. Assembled steering support
5. Bearing
6. Lock for shaft
7. Steering wheel attachment nut
8. Steering upper shaft
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MECHAN ICAL ELEMENTS CONTROL
37
BRAKE PUMP
BRAKE PUMP WITH PRESSURE DROP INDICATOR ( ICP ) INCLUDED
COMPONENTS
1. Assembled primary piston with gaskets
2. Assembled secondary piston with gaskets
3. Primary piston pin.
4. Secondary piston pin.
5. Primary piston return spring
6. Secondary piston return spring.
7. Purging screw
8. ICP transducer
A –A ICP assembly section
OPERATIONA. B RAKING
THE FRONT BRAKE CIRCUIT
The primary piston is controlled by the pushing rod. A part of the brake fluid under pressur e
will operate together with the spring on the secondary piston, and the other part of the brake flui d
shall penetrate through the ducts to the upper floor towards both exits leading to the front brak e
calipers.
THE REAR BRAKE CIRCUIT
The secondary piston is continuing its movement, conducting the brake fluid under pressure ,
through the ducts, to the upper floor, towards the exit to the pressure-reducing valve. During al l
this time, the linings-pistons assembly will be balanced due to the two side springs .
37 - 1
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