2004 DACIA SOLENZA Repair Manual

36
STEERING ASSEMBLY
36 - 4
Steering box pusher
ADJUSTMENT
When a noise is found in the area of the
st eering box pusher, it is obligatory to per-
form its correct adjustment.
1. Noise identification (clattering).
Hold by ha nd the rack in pusher’s side and
check the tra nsversal c leara nce (up-down). A
noise in the pusher’s area might occur while driv-
ing, caused by a clearance followed by a noi se
(clattering). If the clearance at the pusher is bigger than
0.31 mm, adjust the cleara nce and/or dismount
the steering box and eliminate the cause.
2. Checking and adjustment of the
push er’s clearance.
The pusher adjustmen t is to be performed tak-
ing into consideration both the rack wear and the
pusher’s wear:
- bring t he ra ck i n the minimum radial
runout position; - position the fe eler of a comparative
gauge on the cylindrical part of the rack ( oppo-
site to the threaded part) in the area of rack exit
from casing ( gear side); - rotate the gear on the whole rack length
and establish the minimal runout point, where the
value read on the gauge is minimal; - adjust the comparing gauge to zero;
- by means of a 17 mm fi xed wrench,
rotate the rack from the opposite end unt il the
pusher is in contact with the thre aded plug( a
higher wrench effort may be noticed for a re-
duced movement red on the comparing gauge);
- read the value shown by the comparing
gauge which must be smaller than 0.31 mm.
The pusher clearance adjustment is performed in
the minimal runout point by rotating the threaded
plug ( 4) to a moment of 1± 0.2 daNm and un-screwing ˘ rotations, then secure it by bead-
ing (caulking) in “S” area.
When mounting, put 23 ± 5 cm
3 grease
UM 185 Li2M for : rack, gear, sealing ring
and pusher’s spring, inner surface of t he
threaded plug. Check the operation and check also during
driving if the steering wheel is returning at the
straight line driving position (steering central
point).
1. Pusher
2. “O” ring
3. Spring
4. Threaded plug
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36
STEERING ASSEMBLY
36 - 5
Noise absorbant bushing
DISMOUNTIN G
Loosen the screws of the right front wheel.
Lift the vehicle by means of a two-column elevator.
Dismount the right front wheel.
Dismou nt :
-steering box casing protection bellows-left steering rod end;
-the right steering connected rod.
Rotate the steering wheel t o the right (complete turn), the rack is withdrawing towards left.
Remove, by means of a screwdriver the used noise absorber bearing.
R EMOU NT I NG
Carefully clean t he rack and the noise absorber bearing seat and grease with special grease
containing MoS2 and then mount the new noise absorber bearing.
Position the pins (A) in their casing seats.
Rotate the steering wheel to the left until t he rack stands out the bearing.
Remount on the rack: - the steering c onnecting rod (safety washer and limiter washer a re t o be obligatory
positioned on the threaded side of the joint body); -protection bellows.
Check and adjust the parallelism, if necessary.
A
A
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36
STEERING ASSEMBLY
36 - 6
Bellows
REMARK :
A damaged bellows is t o be obligatory replaced with a new one.
BELLOWS MOUNTING
Bellows mounting is performed by means of a con-shaped device that i s positioned on the
connecting rod joint body (axial ball joint) for bellows easy sliding and avoid damaging.
Put some UM 185 Li2M grease on the bellows part in contact with the joint body (axial ball
joint), to easy the bellows sliding.
Mount a new collar for bellows maintaining on the steering box casing.
REMARK :
It is OBLIGATORY to bring the steering in t he straight line driving position of t he
front axle wheels (steering central point) in order to ensure the air balance inside the
s teering box.
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36
STEERING ASSEMBLY
36 - 7
General
CONSTANT POWER STEERING (CPS)
1. Power steering pump
2. Power steering box
3. High pressure piping
4. Low pressure piping
5. Oil reservoir
6. Rotary valve
7. Pressure controller
8. Accessories belt
9. Rigid ducts
10. Steering box working
chambers
The working principle of the Constant Power Steering (CPS ) system, consists in steering
hydraulic assistance by hydraulic fluid (oil) passing through a drawer (the two chambers ( 10)
from steering box) with double effect and through a rotary valve ( 6) that is distributing the fluid
through two pipes (9) towards the steering box ( 2) subject t o the full turni ng direction of the
directing wheels. The hydraulic assistance is ensured by a pressure controller ( 7) attached on the high pressure
pipe (3) and connected to the injection computer.
The injection computer is receiving information, during power steering operation, about the
pressure value in “high pressure circuit” ( which may be seen by means of the CLIP tester). The
pressure value in “high pressure circuit” is depending of the pomp conducted pressure as well as
of the used oil fluidity. The more pressure is high, the power steering pump is absorbing more additional energy.
The power steering pump ( 1) is continuously providing in the circuit a constant hydraulic fluid
(oil) flow, regardless the engine RPM, based on the fact t hat pump is driven by the accessories
belt (8). In this case, the system has the generic denomination of “ Open Center System “
REMARK:
The steering is not to be ful ly locked at maximum m ore than 45 seconds at an engine
RPM of 2500 rot/min (risk of power steering pump damaging).
36054
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36
STEERING ASSEMBLY
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SPECIAL TOOLS
MOT 453 Flexible piping pliers
P. F. 476 Device for ball joi nt depressing
TIGHTENING MOMENTS (daNm)
Pow er steering box
DA-CA supply pipe attachment screw on power train 0.4
A ttachment screw of steering box high pressure pipe-pump 2.1
Wheels screws 9
St eering ball joint nut 4
St eering box attachment screws on cross-member 5
S crews for pipes clamps attachment on power train 0.77
S crews for clamps attachment on steering box supports 3
Con nection screws of the steering column lower shaft joint 1.4
DISMOUNTIN G
Dismount the battery.
Lift the ve hicle by means of a t wo-column
elevator.
PF 476
Dismo unt :
- engine shield;
- steering rods funnels ball joints by means
of the PF 476 device;
- connection screw between the steering
column lower shaft joint and the steering box gear
shaft, marking the joint position.
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36
STEERING ASSEMBLY
36 - 9
Clamp the two flexible pipes ( supply and
low pressure) by m eans of the MOT 453
device.
Dismou nt :
- clamps attachment for maintaining the
low pressure pipe;
- c onne c tions of t he hi gh a nd low
pressure from the steering box; - low pressure
pi ping (maintaining clip being
previously dismounted); Disconnect the oxyge n sensor, in case of
vehicles equipped according to EURO III
norms.
- exhaust central collar; (under vehicle);
- anti-rocking steering rod from the
cross member support and from the gearbox:
Pow er steering box
Push the descending tube towards vehicle
front. Dismount the four steering box attachment
sc rews on the cross member.
Remove the steering box through the right
side (distribution side).
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36
STEERING ASSEMBLY
36 - 10
R
EMARK :
It is forbidden to dismount from the power
st eering box the pipes between the rotary
valve and the steering box.
Whe n dismounti ng, the high and low
p ressure pipes are to be positioned with the
connection screws downward oriented, i n
order to avoid contaminants penetration.
R EMOU NT I NG
Mount :
-steering box
-s teering rods ball j oints in t he steeri ng
knuckle arms; - exhaust
-anti-rocking steering rod;
- cardan joint in the position marke d at
dismounting;
-high and low pressure pipes (remove
MOT 453 pliers), ob serving t he re qui re d
tightening moments; -piping attachment collars;
- wheels;
- battery.
Refill the circuit with oil ( full reservoir).
With stopped engine, easy a ct upon the
steering wheel in both directions, so that rack
is performing a complete double stroke.
Repeat the operation with started engine
(oil pump operatin g), then fill up to the MAXI
mark, the oil level in the reservoir.
Check and eventually adjust the
parallelism.
Pow er steering box
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36
STEERING ASSEMBLY
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Power steering box pusher
When an excessive rack clearance,
followed by clattering in the steering box is
occurring, before replacing the steering box,
the pusher with rack is to be adjusted. 1. Noise (clattering) identification.
Lift the vehicle by means of a two-column
elevator; On the pusher side:
- dismount the bellows attachment clip
on the steering box casing;
- push the bellow towards the steering
rod; - hold by hand the rack rod and check
the transversal clearance (up- down). A clearance followed by a noise (clatt ering)
is leading to a pusher noise, during driving. 2. Adjustment
Straigh ten th e caulking (A) of t he
adjustment nut bead (1).
By means of a 10 mm hexagonal wrench,
tighten the adjustment nut until there is no more
clearance.
AT T E N T I O N !
Do not tighten the nut more than 3
teeth.Check if the rack is freely moving all the
length. Bend the adjustment nut bead in the two
opposite slots of the steering box casing, ensuring
in this way its unscrewing.
Positio n the bellows on the steering box casing
and mount a new attachment clip.
Lower the vehicle from the elevator with
wheels on the ground.
Check, during driving if the steering wheel is
coming back to the steering center point.
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