Egr valve Citroen C2 2004 1.G Workshop Manual

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ENGINE
SPECIAL FEATURES TIGHTENING TORQUES (m.daN )
Engines9HZ 9HY
Cylinder head
Camshaft bearing covers
Pretightening0,5 ± 0,1
Tightening1 ± 0,1
Exhaust manifold 3 ± 0,3
Camshaft pulley
Pretightening2 ± 0,2
Angular tightening50 ±5°
Cylinder head
Pretightening2 ± 0,2
Tightening4 ± 0,5
Angular tightening260 ± 5°
EGR valve1 ±0,1
Flywheel Clutch
Flywheel
Pretightening3 ± 0,3
Angular tightening90 ±5°
Clutch mechanism2 ± 0,2
XSARA PICASSO

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ENGINE
(1) «Idler»camshaft pulley(2)Target for cylinder reference sensor.(3)Camshaft hub.(4)«Fixed»crankshaft pinion.
The determining of the tension of the timing belt is done on the cam
shaft pulley
(1).
The new timing on 8 valveengines DW10TD (RHY)and DW10
ATED (RHS-RHZ)requires the following components:«Idler»crankshaft pinion«Fixed»camshaft pulley.
(5) «Fixed»pulley with integral cylinder reference
sensor target).(6) «Idler»crankshaft pinion (with increased width keyway groove).
The determining of the tension of the timing belt is done on the crankshaft pinion
(6).
CHECKING AND SETTING THE VALVE TIMING
Engines: RHY RHZ N° RPO 9128 #
OLD FITTING:# N° RPO 9127 NEW FITTING N° RPO 9128 #
B1EP176DB1EP177D
XSARA XSARA PICASSO

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INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Engines: 8HX 8HW
Engines: 8HV 8HY
Tools.
[1]
Manual pressurevacuum pump: FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness specific to high pressure diesel
injection (HDi) engines.
EGR v
alve.Connect tool [1]on the capsule takeoff (2).
Apply a vacuum of approx.0,6 barseveral times to activate the rod «a».
In abruptly suppressing the vacuum, the valve should click and lock itself back on its seating.
Regulation electrovalve (EGR).(Engine:8HX8HW).Check to be performed between the electrovalve (1)and the EGR valve (2).
Link the tool [1]in series, between the electrovalve (1)and the capsule (2).
Compare the values noted with those in the table below.
Regulation electrovalve (EGR).(Engine:8HV8HY).Check to be performed between the electrovalve (2)and the EGR valve (1).
Link the tool [1] in series, between the electrovalve (2)and the capsule (1).
Compare the values noted with those in the table below.
Engine speed (rpm) Vacuum value
780 0,5
2500 0
B1HP15GD
B1HP1K6D
C2 C3

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INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Engines: 9HZ 9HY
B1HP1UPC
B1HP1UQC
XSARA PICASSO
Exhaust gas recycling (EGR) valve.
(1)
Exhaust gas recycling (EGR) electrovalve
NOTE:The engine ECU pilots the EGR valve.
Perform the check with the aid of a diagnostic tool.
Carry out the following operations with the diagnostic tool:
«INJECTION» menu.
Actuator tests.
EGE electrovalve.
Check that you can hear the click from the EGR regulation electrovalve.
Double butterfly housing (vehicle with particle filter).
(2)
Double butterfly housing.
Perform the check with the aid of a diagnostic tool.
Carry out the following operations with the diagnostic tool:
«INJECTION» menu.
Actuator tests.
Butterfly.
EGR exchanger butterfly.
Check that you can hear the click from the double butterfly housing.

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INJECTION
CHECKS: EXHAUST GASES RECYCLING CIRCUIT
Engines: RHY RHZ
XSARA PICASSO
Tools.
[1]
Manual vacuum pump : FACOM DA 16
IMPERATIVE: Respect the safety and cleanliness requirements.
EGR valve.
Connect the tool [1]to the capsule union (1).
Apply several times in succession a vacuum of approx.0.6 barto activate the rod "a".
In abrupt reaction to the vacuum, the valve should close on its seating with a clicking
noise.
Exhaust gas reycling (EGR) electrovalve. Check, not under load, between the electrovalve (2)and the EGR valve (1).
Connect the tool [1]between the electrovalve (2)and the capsule (1).
Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value
7800,5
25000
B1HP12GD