2000 Citroen C5 vacuum

Downloaded from www.Manualslib.com manuals search engine 129
INJECTION
AIR SUPPLY CIRCUIT SPECIFICATION
Engine : 4HX
ESSENTIAL : Respect the safety and cleanliness
recommendations.
Tool.
[1] Manual vacuum pump: FACOMM DA 16.
Checks.
ESSENTIAL : Respect the safety and cleanliness
recommendations that are specific to high pressure
diesel injection (HDi) engines.
B1HP1ARP

Downloaded from www.Manualslib.com manuals search engine 130
INJECTION
CHECKS : AIR SUPPLY CIRCUIT
Engine : 4HX
Vacuum pump.
- Connect the tool [1] on the vacuum pump (3).
- Start the engine.
- The vacuum should be 0.8 bar at750 rpm.
Boost vacuum regulation electrovalve.
- Connect the tool [1] between the electrovalve (2)and the valve(1).
Compare readings with the values in the table below.
Boost pressure regulation valve.
- Connect the tool [1] on the valve(1).(Grey marking on pipe).
- Appy a vacuum of 0.8 bar. The rod "a"should move 12 ± 2 mm.
- Rod "a"should be moved 12 mm.
«Swirl» control electrovalve.
- Connect the tool[1] as an adaptor between the electrovalve (4)and the control diaphragm of the «Swirl» (5).
- Compare readings with the values in the table below :
«Swirl» control diaphragm.
- Connect the tool[1] on the control diaphragm of the «Swirl» (5).
- Apply a vacuum of approx. 0,6 Bar; the pin (6)should be at the end stop, at «b».
Engine speed (rpm) Vacuum (Bar)
7800.6 Bar
40000.25 Bar
Engine speed (rpm) Vacuum (Bar)
7800.6 Bar
40000.25 Bar

Downloaded from www.Manualslib.com manuals search engine 131
INJECTION
CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engines : RHZ - RHY
(1) Butterfly housing(3) Electrovalve (black connector)
(2) EGR valve(tube with blue marking)(4) Electrovalve(blue connector)
TOOL
[1] Manual vacuum pump : FACOM DA 16.
ESSENTIAL : Respect the safety and cleanliness requirements specific to
high pressure diesel injection (HDi) engines.
EGR electrovalve
- Check, not under load, between the electrovalve(4)and the EGR valve (2).
- Connect the tool[1] between the electrovalve (3)and the butterfly housing (1).
- Compare readings with the values in the table below.
Butterfly housing electrovalve.
- Check, not under load, between the electrovalve (3)and the butterfly housing (1).
- Connect the tool[1]between the electrovalve(3) and the butterfly housing(1).
- Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value (bar)
7800.5 Bar
25000 Bar
B1HP1BVD

Downloaded from www.Manualslib.com manuals search engine 132
INJECTION
CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engines : RHZ – RHY
EGR valve
- Connect tool [1]on the EGR valve capsule take-off (2).
- Apply a vacuum of approx.0,6 barto activate the EGRvalve.
- In abruptly suppressing the vacuum, the valve should click and lock itself back on its seating.
- Repeat the operation several times.
Butterfly housing
- Remove the air duct between the air/air exchanger and the butterfly housing (5),(1).
- Connect tool[1]on the butterfly housing vacuum capsule (1).
- Apply a vacuum of approx. 0,8 bar, the flap (a)of the butterfly housing(1)should be closed.
B1HP1BWCB1BP2ADC

Downloaded from www.Manualslib.com manuals search engine CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engine : 4HX
TOOL
[1] Manual vacuum pump : FACOMM DA 16.
ESSENTIAL : Respect the safety and cleanliness requirements specific to
high pressure diesel injection (HDi) engines..
Electrovalve (EGR).
- Check, not under load, between the electrovalve(3)(blue connector) and the EGRvalve (2)
(tube with blue marking).
- Connect the tool[1]between the electrovalve (3) and the EGRvalve(2).
- Compare readings with the values in the table below.
Butterfly housing electrovalve
- Check, not under load, between the electrovalve (4) (black connector)and the butterfly housing (1)
(Metering pump cold), (tube with white marking).
- Connect the tool[1]between the electrovalve (4) and the butterfly housing(1).
- Compare readings with the values in the table below.
Engine speed (rpm) Vacuum value (bar)
7800.5 Bar
25000 Bar
B1HP1B8D
133
INJECTION

Downloaded from www.Manualslib.com manuals search engine 134
INJECTION
CHECKS : EXHAUST GASES RECYCLING CIRCUIT
Engine : 4HX
EGR valve
- Connect tool[1]on the take-off (a)of the EGR valve capsule (2).
- Apply a vacuum of approx. 0,6 barto activate the EGRvalve.
- In abruptly suppressing the vacuum, the valve should click and lock itself back on its seating.
- Repeat the operation several times.
Butterfly housing
- Remove the air duct between the air/air exchanger and the butterfly housing (1).
- Disconnect the tube (white marking)on the electrovalve (4)(black connector).
- Connect tool[1]on the tube with the white marking.
- Apply a vacuum of approx. 0,8 bar, the flap (b)of the butterfly housing (1) should be closed.
B1BP29NCB1BP29PC

Downloaded from www.Manualslib.com manuals search engine 156
INJECTION
Component (diagr.) Supplier Reference Observations
Diesel injectors22BOSCH9625542580Reference 1 –Blue marking : injector Class 1.
Reference 2 – Green marking : injector Class 2.
If changing a diesel injector-carrier, order a
component of the same class.
Fuel high pressure regulator27BOSCHFixed on the fuel high pressure pump.
Fuel high pressure pump 3rd piston
deactivator28BOSCHFixed on the fuel high pressure pump.
Air circuit
Component (diagr.) Supplier Reference Observations
Air flowmeter4SIEMENS
Air filter23PSA 7899
Turbocompressor24KKK /
Exhaust gas recycling valve
(EGR)25PIERBURG Shim reference: violet.
Recycling regulation electrovalve
(EGR)26BOSCH
Exhaust line29
Vacuum pump44
EGR butterfly housing46MARK IV
EGR butterfly housing electrovalve45BOSCH
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Fuel circuit (continued)

Downloaded from www.Manualslib.com manuals search engine Component (diagr.) Supplier Reference Observations
Air filter24
Air flowmeter5SIEMENS
Turbocompressor25KKK
Inlet manifold pressure sensor4NIPPON
DENSON
Air/air heat exchanger26
EGR exhaust gas recycling
valve27PIERBORG Shim reference: violet
Turbo valve adjustment control
capsule28Integral with the turbocompressor
EGR recycling regulation
electrovalve29BOSCH
Turbo pressure regulation
electrovalve30BOSCH
Exhaust line33
Vacuum pump48
EGR butterfly housing electrovalve49
EGR butterfly housing50MAGNETI
MARELLI
161
INJECTION
Air circuit
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM