2004 Citroen C3 Ac pipe

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ENGINECHECKING AND SETTING THE VALVE TIMING
Engines: 9HZ 9HY
Refitting (continued).
Refit tool [1]at «b».
Remove the screw (10).
Refit:
The upper timing cover
(12).
The lower timing cover (11).
The accessories drive pulley (9).
The screw (10).
Tightening torqueScrew (10)Pretighten to:3 ± 0,3 m.daN.
Angular tighten:180°±5°.
Remove tool [1].
Refit:
The engine support
(8), tighten to5,5 ± 0,4 m.daN.
The engine support (4), tighten to 6,1 ±0,6 m.daN.
The engine support (5), tighten to 2,5 ±0,2 m.daN.
The electrical harness (7).
The power steering fluid reservoir (6).
XSARA PICASSO
Disengage the jack from under the engine.
Couple:
The tube
(2).
The exhaust line, tighten the clip to 2,5 ± 0,3 m.daN.
The fuel unions (1).
The air/air heat exchanger inlet and outlet pipes (3).
Connect the connector at «a».
Refit:
The accessories drive belt
(see corresponding operation).
The front RH splashshield (see corresponding operation).
The front RH wheel, tighten to 9 ± 1 m.daN.
Reconnect the positive and negative terminals of the battery.
IMPERATIVE: Perform the operations that are necessary following a
reconnection of the battery (see corresponding operation).

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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: RHY RHZ N° RPO 9128 #
Uncouple, plug and move aside, using tool [7], the fuel delivery pipe (2)and return
pipe (1).
Remove:
Screws
(3), (4) and (6).
Screw (7).
The upper timing cover (5).
WARNING:Refit screw (7)equipped with a spacer (17 mm thick), tighten the
screw (7)to 1,5 ± 0,1 m. daN.
NOTE:The screw (7)is one of the screws securing the coolant pump and is there
for its sealing.
Put the gear lever in 5th gear.Turn the road wheel to turn the engine in its direction of rotation.
Orient the camshaft pulley in the pegging position, use a mirror if necessary.
Peg the camshaft, using tool
[5].
Peg the engine flywheel, using tool
[3].
B1EP1A7CB1BP2H3CB1BP2H2CB1BP2R2C
XSARA XSARA PICASSO

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ENGINECHECKING AND SETTING THE VALVE TIMING
Engines: RHY RHZ N° RPO 9128 #
Remove:
The fixings of the pipe linking the power steering pump with the rotary valve.
The clutch lower closing plate.
Lock the engine flywheel, using tool
[6].
Remove the screw (8).
Refit the screw (8)without its thrust washer.
Remove:
The accessories pulley
(9), using tool[8].
Tool [6].
The lower torque reaction rod.
Support the engine by means of a workshop hoist.
Remove:
The bearing shell fitting
(10).
The nut (12).
Screws (11).
The bracket (13).
NOTE:Lift then lower the engine with the workshop hoist, to have access to the
timing cover fixing screws.
Remove:
The intermediate timing cover.
The lower timing cover.
B1CP04BCB1BP2R3CB1BP2R4C
XSARA XSARA PICASSO

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ENGINECHECKING AND SETTING THE VALVE TIMING
Engines: RHY RHZ N° RPO 9128 #
Remove:
Tools [3]and [5].
Screw (7)and the spacer.
Refit: The lower, intermediate and upper covers
(5).
Screw (7), tighten to 1,5 ± 0,1 m.daN.
Screws (3), (4)and (6).
The bracket (13).
Screws (11), tighten to 6,1 ± 0,5 m.daN.
The nut (12), tighten to 4,5 ± 0,5 m.daN.
Fit the bearing shell (10).
Take away the workshop hoist.
Clip the fuel delivery and return pipes. Remove the tool
[7].
Couple:
The fuel delivery pipe
(12).
The fuel return pipe (1).
Coat the screw (8)with loctite FRENETANCH.
Refit the tool [6]and the screw (8)with the washer (22),
Tighten to 7 ± 0,2 m.daNand angular tighten to A = 60° ± 5°
[6].
Reposition and reclip the cooling hose.
Complete the refitting of components in reverse order to removal.
B1EP1A7CB1BP2R4CB1EP1ADC
XSARA XSARA PICASSO

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INJECTION
SAFETY REQUIREMENTS: HDi DIRECT INJECTION SYSTEM
Engines: HDi ALL TYPES
CLEANLINESS REQUIREMENTS.
Preliminary operations.
IMPERATIVE: The technician should wear clean overalls.
Before working on the injection system, it may be necessary to clean the apertures of the following sensitive components:(refer to corresponding procedures) Fuel filter.
High pressure fuel pump.
High pressure fuel injection common rail. High pressure fuel pipes
Diesel injector carriers.
IMPERATIVE: After dismantling, immediately block the apertures of the sensitive components with plugs, to avoid the entry of impurities.
Work area.
The work area must be clean and free of clutter.
Components being worked on must be protected from dust contamination.

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INJECTION
XSARA PICASSO
CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines: RHY RHZ
Tools.
[1] Ø 10 mm
low pressure connector: 4215T.
[2] Ø 8 mmlow pressure connector: 4218 T.
[3]Pressure gauge for testing boost pressure: 4073 T Kit 4073 T
Connect the tool [1]between the booster pump and the fuel filter (white mark at "a" on the
fuel supply pipe).
Connect the tool [2]downstream of the diesel injectors, between the high pressure fuel
pump and the fuel filter (green mark at "b"on the fuel return pipe).
WARNING: Any check of pressure downstream of the fuel filter is PROHIBITED.
Checks on pressure:static.
Switch on ignition
For 3 seconds(normal functioning):
Fuel supply pressure shown by the pressure gauge [3] = 1.8 ± 0.4 Bar. Fuel return pressure shown by the pressure gauge [3] = 0.5 ± 0.4 Bar.
B1BP1TWD

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INJECTION
XSARA PICASSO CHECKS: LOW PRESSURE FUEL SUPPLY CIRCUIT
Engines: RHY RHZ (continued)
Checks on pressure: dynamic.Engine running, at idle (normal functioning):
Fuel supply pressure shown by the pressure gauge [3] = 2 ± 0.4 Bar. Fuel return pressure shown by the pressure gauge [3] = 0.7 ± 0.4 Bar.
Abnormal functioning
Impossible to start the engine:
Fuel supply pressure less than 0.8 Bar:
Check the low pressure regulator incorporated in the filter (locked open). Check the high pressure pump distribution valve (locked shut).
Check: diesel injector return flow.(Table below)
Uncouple the diesel injector return pipe.
Fuel supply pressure Fuel return pressure Checks
Between 3and 3.5 Bar 0,7 ± 0,2 BarCheck the condition of the diesel filter
More than
3.5 Bar
More than 3.5 Bar
Less than 0.7 Bar
More than 0.7 Bar
Check the low pressure regulator incorporated in
the filter (locked shut): replace.
Check the fuel return circuit
(pipe pinched or trapped…)
Between 0.8 and 1.5 BarLess than 0.7 BarCheck the fuel suppy circuit:
Booster pump (low pressure), piping.
Check:
Observe:
The flow should be drop by drop.
Diesel injector functioning correctly.
Excessive fuel return.
Diesel injector locked shut.

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INJECTION
CHECKS: TURBO PRESSURE
Engine: RHZ
XSARA PICASSO
Tools.
[1]
Pressure gauge for checking boost pressure: 4073T.A Kit 4073T
[2]Sleeve for checking boost pressure: 4185T
[3]Adaptor sleeve: 4229T
Checks.
IMPERATIVE: respect the following checking requirements: Engine at running
temperature. Vehicle in running order at full load.
Preparation.
Remove the collar fixing (3).
Insert the tool [2]connected with tool [3], between the pipe (1)and the duct (2).
Position tool [1]in the vehicle.
Connect the sleeve [2]to the tool [1]with its tube «a».Procedure. Start the engine.
Engage first gear and start the engine.
Engage the gears up to third gear.
Decelerate to
1000 rpm.
Accelerate hard, and check the pressure:0.6 ± 0.05 Bar (1500 rpm).
Accelerate freely in kickdown (changing from fourth to third gear).
Check the pressure:0.95 ± 0.05 Bar(between 2500 and 3500 rpm).
Remove the tools, reposition the pipe (1)and refit the collar (3).B1HP12JD