2004 DACIA SOLENZA oil pressure

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
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
36 - 12
Power steering pump
SPECIAL TOOLS
MOT 453 Flexible piping pliers
DIR 1083-01 Device for PDA pul ley remounting
PS 1094 Bearing extractor
TIGHTENING MOMENTS (daNm)
Screws for D.A. pump attachme nt 5
Screws for D.A. pump pulley attachment 0.8
Place the vehicle on a two-column elevator.
DISMOUNTIN G
Disconnect the battery.
Drain the oil from DA circuit
Loosen the attachment screws ( S
1) of the
tightening clamp. Dism ount t he a dj ust m ent sc re w ( S
2)
allowin g the tightening clamp lowering.
Dismount the accessories belt.
Dismou nt the three pulley attachment screws
to the hub and extract the pulley.
Disconnect from the power steering pump
the supply piping and the high pressure piping. Dism oun t t he po we r st e e ri n g p um p
attachment screws to the support: -f
our screws in case of the DA/CA pump.
-Three screws in case of the DA pump
without CA
R EMOU NT I NG
Perform the dismounting operations in the
reverse order, observing the following:
- the screws tightening sequence, i.e. :
-1-2- 3-4 - i n c a se of t he DA/ CA
pump; -1-2-3 - i n c ase of t he DA pum p
w ithout CA, a s we l l a s the t ighte ni ng
moments. Mount a new accessories belt.
Adjust the belt tension (see the method
described in chapter 07 – Tensioning, belts,
accessories).
Perform t he fi lling of t he DA unit, then
perform the unit purging ( method described
in chapter 05).
S2
S1
S1
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62
AIR CONDITIONING
62- 12
Compressor
FUN CTION
The compressor is suction the vapors com-
ing from evaporator at low temperature and
pressure, compress them and transmit the gas
at high temperature and pressure towards con-
denser. The refrigerant fluid in entering in condenser
in vapors condition, at high temperature and
pressure, where, by condensing, is transmittin g
in the external environment the abstracted heat.
At condenser exit, the refrigerant fluid is in
liquid condition, at high pressure and tempera-
ture.
DISMOUNTIN G
Drain the refrigerant c ircuit t o a charging
station.
Disconnect the battery.
Disconnect the supply wiring connector of
the compressor clutch.
Dismount the screw of attachment clamp
of the refrigerant pipes on compressor.
Cover the open piping with protectors.
Dismount the compressor-driving belt.
Dismount the four compressor attachment
screws.
Extract the compressor.
REMOU NT I NG
In case compressor is replaced, this one is
delivered filled with oil. Position the compressor with the filling cap
upwards. Mount the compressor attachment screws.
Tighten the compressor attachment screws
to the required moment of 2,1 daNm.
Remount the two refrigerant pipes and
tighten t he attachment clamp screw to the re-
quired moment of 1,2 daNm.
Mount the compressor -driving belt and ten-
sion it by acting upon the screw ( 1) according
to the method descri bed in chapter 07 “ Ac-
cessories belts tensioning”.
The tensioning values are :
150 - 155 Hz - compressor belt;
214 – 230 Hz – DA pump/compressor belt.
Connect the supply wire connector of the
compressor clutch. Vacuum and fill the circuit with refrigerant
fluid HFC 134a , by means of the charging sta-
tion (see chapter 62 “Draining – Filling unit
refrigerant circuit” ).
REMARK :
Before mounting c heck t he condition
of t he gaskets and lubri cate them wi th
compressor oil PAG SP 10.
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62
AIR CONDITIONING
62- 14
Pressure controller
LOCATION
Pressure controller (1) is located on the high-
pressure pipe, near the dryer reservoir.
FUNCTION
The pre ssure control ler is perm anently
informing UCE (electronic control unit) about
the circuit pressure. Subject to pressure value in the high-
pressure circuit, UCE is commanding:
- circuit break ( by uncoupling the compressor
clutch) when the pre ssure in the c ircuit is
decreasing under 1,96 + /-0,2 bar a nd clutch
coupling when the pressure is over 2,16 +/-
0,2 bar;
- circuit break when the pressure in the circuit
is over 31,4 +/- 2 bar and compressor clutch
coupling when the pressure is decreasing under
25,5 +/- 2 bar;
- engine fan starting on second speed, when
the pressure is over 17,7 +/- 1 bar and engine
fan stopping when the pressure is decreasing
under 13.7 +/- 1 bar.
REPLAC EMEN T
The pressure controller replacement does
not imply the draining of the refrigerant circuit. Disc
onnect the pressure controller
connector.
Replace the pressure controller.
When m ounting, lubricate the pressure
controller sealing gasket with oil PAG SP 10.
T ighten the pressure controller to the required
moment of 0,9 +/- 0,1 daNm.
Check for refrigerant fluid leaks.
1
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62
AIR CONDITIONING
62- 16
Unit piping
TIGHTENING MOMENTS(daNm)
Pipe attachment nut 3/4’’on condenser 1,8-2
Pipe attachment nut 5/8’’on condenser 1-1,4
P ipes attachment screw on compressor 1,2
Pipes attachment nut on evaporator 0,57
The AC unit piping is ensuring the refrigeran t
fluid circulation between the unit components.
When piping is replaced, check the existence
of the protective caps, the l ubrication of the
connections and gaskets with compressor oil.
The unit fillin g and draining valves are placed
on the c ompressor piping a nd they different
diameters, so that they can not be reversed.
COMPRESSOR – EVAPORATOR
LO W PRESSURE PIPE
DISMOUNTIN G
Disconnect the battery.
Drain the AC circ uit by means of the
charging unit.
Dismo unt :
-atta chme nt nu t ( 9) of t he pi pe s
tightening clamp on evaporator ( 8) (located in
DSAF); -attachment screw ( 6) of the pipes
tightening clamp on compressor ( 5);
- attachment screw (7) of pipes clamp.
Release the pipe ( 10) and mount protection
caps at its extremities, at evaporator and
compressor.
R EMOU NT I NG
Perform the dismounting operations in the
reverse order.
Replace the gaskets from pipe’s extremities.
Before m ounting, t he ga skets are to be
lubricated with oil PAG SP 10.
In case pipe ( 10) is replaced, add 10 ml of
oil PA G S P 10, and in case of its breaking,
100 ml.
COMPRESSOR – CONDENSER
HIGH PRESSURE PIPE
DISMOUNTIN G
Disconnect the battery.
Drain th e AC circu it by means of the
charging unit. Dismo unt :
- front grill;
-atta chme nt sc rew (6) of t he hi gh
pressure pipe (4) on compressor (5);
-pipe attachment nut on condenser ( 12);
-pipe att achment clamp ( 11) on
condenser.
7
1
10
9
13
3 4
12 6
5
11 8
2
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62
AIR CONDITIONING
62 - 17
Unit piping
Release the pipe and mount protection caps
at its extremities, at compressor and condenser.
REMOU NT I NG
Perform the dismounting operations in the
reverse order. Replace the gaskets and lubricate them with
oil PA G S P 10.
When a pipe is replaced, add 10 ml of oil
P AG SP 10 and in case of its breaking, 100 ml.
AT T E N T I O N !
Aft e r m ount ing t he AC uni t pi pi ng,
check for refrigerant fluid leaks.
FILTER RESERVOIR –
EVAPORATOR HIGH PRESSURE
PIPE (DSAF)
DISMOUNTIN G
Disconnect the battery.
Drain the AC circuit.
Disconnect the pressure controller connector
(2). Dismou nt :
-attac hm e n t n u t ( 9) of th e p i pe s
tightening clamp on evaporator ( 8);
- attachment nut of the high pressure pipe
(1 ) on filter reservoir;
- attachment screw (7) of pipes clamp.
Release the pipe ( 1) and mount protection
caps at its extremities, at evaporator and
reservoir filter ( 13).
REMOU NT I NG
Perform the dismounting operations in the
reverse order.
Check the condition of the gasket and
lubricate them with oil PAG SP 10.
When re placing a pipe, add 10 ml of oil
P AG SP 10 and in case of its breaking, 100 ml.
The “ 0” rings from the pipe extremities are to
be replaced with new ones.
FILTER RESERVOIR – CONDENSER HIGH PRESSURE PIPE
DISMOUNTIN G
Disconnect the battery.
Drain the AC circuit.
Dismount the attachment nuts of the high-
pressure pipe ( 3) on filter re servoir and con-
denser. Release the pipe and mount protection caps
at pi pe’s e xtremities ( 3), at condenser a nd at
filter reservoir.
7
1
9
13
34 126
5
11 8
2
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83
INSTRUMENT PANEL
83 - 3 Con
nector D (gray)
Pin Denomination 1. Mass
2. Free
3. Free
4. Free
5. Water temperature alert
6. Oil pressure alert
7. Battery charging indicator
8. Fog lamp indicator
9. Fog projectors indicator
10. Right turning indicator
C
onnector C (black)
Pin Denomination 1. Free
2. Free
3. Free
4. Handbrake indicator / ICP braking
system
5. Free
6. Anti-starting indicator
7. – Fuel level transmitter
8. Fuel level signal
9. Free
10. + Battery
Connector A (white)
Pin Denomination 1. Left turning indicator
2. Meeting lights indicator
3. Road lights indicator
4. Rear windscreen defrosting indicator
5. Free
6. Free
7. Free
8. + Parking lights
9. Water temperature indicator
10. Free
Connectors disposal
Connector B (brown)
Pin Denomination 1. Vehicle speed signal
2. Engine RPM signal
3. Free
4. Free
5. + After contact
6. Driver safety belt indicator
7. OBD indicator
8. Free
9. Free
10. + After contact
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