Renault Scenic 3 Chassis. Manual — part 49
38C
-
9
ANTI-LOCK BRAKING SYSTEM
Hydraulic unit
K4M
38C
Loosen the air duct clips (4).
Remove the air duct (5).
Disconnect:
- the brake servo vacuum pipe at the air distributor
end,
- the ignition coil connectors.
Disconnect the throttle valve connector.
Remove:
- the throttle valve mounting bolts (6),
- the throttle valve.
Unclip the petrol vapour recirculation pipe (8).
Disconnect the air temperature sensor.
Remove the engine wiring harness (7).
Remove:
- the air distribution unit mounting bolts (9),
- the air distribution unit,
- the soundproofing screen mountings.
Remove the soundproofing screen.
101807
Note:
Do not damage the vacuum outlet on the air dis-
tributor. If it is damaged, the air distributor will
have to be replaced.
101813
5
4
6
6
101795
102304
8
7
9
9
9
38C
-
10
ANTI-LOCK BRAKING SYSTEM
Hydraulic unit
K4M
38C
Remove the lifting eye (10).
Remove the air conditioning pipe (see Evaporator -
dehydration canister).
Remove the ABS computer earth terminal mounting
bolt.
Disconnect the computer connector.
Unscrew the six hydraulic unit pipes.
Unclip the six pipes from the hydraulic unit.
Remove:
- the hydraulic unit support mounting bolts (11),
- the « hydraulic unit - support » assembly,
- the hydraulic unit.
REFITTING
Proceed in the reverse order to removal.
104324
AIR CONDITIONING or CLIMATE CONTROL
10
104341
WARNING
- Replace the throttle valve seal each time it is
removed.
- Position the hydraulic unit earth ter minal wire
facing downwards to optimise the computer
connector sealing.
11
11
38C
-
11
ANTI-LOCK BRAKING SYSTEM
Hydraulic unit
K4M
38C
Refit the air conditioning pipe (see Evaporator - de-
hydration canister).
Torque tighten:
- the hydraulic unit support mounting bolts (0.65
daNm),
- the hydraulic unit - support mounting bolts (0.8
daNm),
- the bolts securing the pipes on the hydraulic
unit (1.4 daNm),
- the air distributor mounting bolts (0.9 daNm).
Bleed the braking circuit using the Diagnostic tool
(Section General Vehicle Information, Braking circuit
bleed, page 30A-5).
Fill up the refrigerant circuit using the filling station
tool.
106032
WARNING
Set up the earth terminal wires facing
downwards, to optimise the hydraulic unit compu-
ter connector sealing.
AIR CONDITIONING or CLIMATE CONTROL
WARNING
- When the ignition is switched on, the throttle
valve should run a minimum and maximum stop
programming cycle. Using the Diagnostic tool,
check that this programming has been executed
correctly.
- Connect the battery; carry out the necessary
programming (Section Electrical equipment).
AIR CONDITIONING or CLIMATE CONTROL
Note:
- Make sure that the air conditioning is working
properly with the fan assembly at maximum
speed.
- If there is no cold air flow, look for leaks (see
Leak detection).
38C
-
12
ANTI-LOCK BRAKING SYSTEM
Hydraulic unit
F9Q or K9K
38C
REMOVAL
Disconnect the battery, starting with the negative ter-
minal.
Fit a pedal press tool to the brake pedal to restrict
the outflow of brake fluid.
Drain the refrigerant circuit using the filling station
tool.
Remove the cowl grille (see Wiping - WashingSec-
tion).
Remove:
- the engine covers,
- the two air filter access panel mounting bolts (1)
- the plenum chamber partition mounting bolts (2),
- the plenum chamber partition.
Remove the plenum chamber bracket (3).
Equipment required
pedal press
filling station
Diagnostic tool
Tightening torques
m
hydraulic unit support
mounting bolts
0.65 daNm
hydraulic unit - support
mounting bolts
0.8 daNm
bolts securing the pipes
on the hydraulic unit
1.4 daNm
AIR CONDITIONING or CLIMATE CONTROL
104343
104246
104666
2
1
2
2
3
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