valve Citroen C4 2005 2.G Workshop Manual

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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engine: WJY
Setting the timing (continued).
Peg the camshaft hub, using tool[4].
Peg the injection pump hub, using tool[3].
Slacken screws (5)and (6).
Slacken screw (9)of the tensioner roller (8).
Remove the timing belt.
Refitting.
Retighten screws (5)and (6) by hand.
Turn the pinions (10)and(7)clockwise in order to place them at end of slots.
Fit the timing belt on the crankshaft.
Hold the belt, using tool [5].
Position the timing belt in the following sequence:
- Guide roller (11).
- Injection pump pinion (7).
- Camshaft pinion (10).
- Coolant pump pinion (12).
- Tensioner roller (8).
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engine: WJY
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Setting the timing (continued).
NOTE:If necessary, you can slightly rotate the pinions (10)and (7)anti-clockwise in order to engage the belt.
The angular displacement value of the belt in relation to the pinions should not be more than half a tooth.
Remove tool [5].
Act on the tensioner roller (8)by its square «a», using tool [6]to check that the camshaft and injection
pump pinions can turn freely.
Position the belt tension instrument [7]on the belt at «b».
Using tool [6], act at «a»in the direction opposite to that of engine rotation, to obtain a tension value of
106 ± 2 SEEMunits.
Tighten screws (9), (5) and (6).
Remove tools [7], [2], [3]and [4].
Rotate the crankshaft 8 times
in the normal direction of rotation.
Peg the flywheel, using tool [2].
Peg the camshaft hub, using tool [4].
Peg the injection pump hub, using tool [3].
Slacken screws (9), (5)and (6).
Position the belt tension instrument [7]on the belt at «b».
Using tool [6], act at «a»in the direction opposite to that of engine rotation, to obtain a tension value of
42 ± 2 SEEMunits.
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engine: WJY
Setting the timing (continued).
Tighten:
- Screw (9)to 2.1 ± 0.2 m.daN.
- Screws (5)to 2,3 ± 0.2 m.daN.
- Screws (6)to 2,3 ± 0.2 m.daN.
- Remove and refit tool [7].
- The tension value should be between 38 and 46 SEEMunits.
- Remove tools [7], [2], [3]and [4].
- Turn the crankshaft 2 times
in the normal direction of rotation.
- Peg the flywheel, using the peg [2].
- Visually check the peggings of the camshaft and injection pump.
ESSENTIAL: Visually check that the offsets between the holes of
the camshaft and injection pump hubs and the corresponding
pegging holes are not more than 1 mm. If necessary, recommence
the procedure for fitting the timing belt.
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Setting the timing (continued).
Remove the peg [2].
Remove the screw (4)and the washer.
Refit the lower cover (3).
Refit the intermediate cover (2).
Refit the upper cover (1).
Remove the RH engine support.
Take away the workshop hoist.
Remove the plugs and recouple the diesel fuel delivery and return
hoses.
Refit the accessories drive belt
(see corresponding operation).
Refit the RH lower splash-shield.
Disengage 5th gear.
Connect the battery.
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ENGINECHECKING AND SETTING THE VALVE TIMING
Tools.
[1]Belt tension measuring equipment : 4122-T
[2]Tension lever: (-).0188.J2
[3]Engine flywheel peg: (-).0188.Y
[4] Belt clamp: (-).0188.AD
[5]Camshaft pulley peg: (-).0188.M
[6] Engine flywheel lock: (-).0188.F
[7] Set of blocking plugs: (-).0188.T
[8] Pulley extractor: (-).0188.P
[9] 2 mm Øpeg: (-).0188.Q2Removing.
IMPERATIVE: Respect the safety and cleanliness requirements
that are specific to high pressure diesel injection (HDi) engines.
Undo the front RH wheel bolts.
Raise and support the vehicle on the front RH side.
Disconnect the battery negative terminal.
Remove:
- The under-engine sound-deadening.
- The front RH wheel.
- The front RH splash-shield.
- The engine cover.
Unclip and move aside the cooling hose.
Remove the accessories drive belt
(see corresponding operation).
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Engines: RHY - RHZ
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
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].
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
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.
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
Slacken the screw (17)of the tensioner roller (18).
Remove the timing belt (14).
Checks.
IMPERATIVE: Just before refitting, carry out the checks below.
Check that:
- The rollers (18)and (15)turn freely
(without play and without any tight spot).
- The coolant pump pulley (16)turns freely
(without play and without any tight spot).
- There are no traces of oil leaks from the crankshaft and camshaft seals, etc.
- The crankshaft pinion travels freely on the keyway.
Replace defective components if necessary.
Peg the crankshaft pinion (19)by inserting tool [9]on the LH side of the keyway.
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
Reposition the timimg belt, belt at «a»well tensioned, in the following order:
- Fuel high pressure pump pulley (21).
- Guide roller (15).
- Crankshaft pinion (19).
- Coolant pump pinion (16).
- Tensioner roller (18).
Position tool [1]on the belt at «a».
Remove tools [4]and [9].
Turn the tensioner roller (18)anti-clockwise, using tool [2], to attain an overtension of:
98 ± 2 SEEMunits.
Tighten screw (17)of the tensioner roller to 2,5 ± 0,2 m.da N.
Lock the flywheel by means of tool [6].
Tighten the accessories drive pulley screw (8)to 7 ± 0,7 m.da N.
Remove tools [1], [3], [5]and [6].
Rotate the crankshaft eight times in the normal direction of rotation.
Peg:
- The crankshaft, using tool [3].
- The camshaft drive pulley, using tool [5].
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ENGINE
CHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
Lock the engine flywheel, using tool [6].
Slacken the accessories drive pulley (8).
The screw (17)of the tensioner roller (18).
Fit the tool [1].
Turn the tensioner roller, using tool [2], to attain a tension of: 54 ± 2 SEEMunits.
Tighten screw (17)of the tensioner roller (18)to 2,5 ± 0,2 m.daN.
Remove tool [1].
Fit tool [1].
The tension value should be: 54 ± 3 SEEMunits.
ESSENTIAL: If the value is incorrect, recommence the operation.
Remove tools [1], [3], [5]and [6].
Rotate the crankshaft two times in the normal direction of rotation.
Peg:
- The crankshaft, using tool [3].
- The camshaft drive pulley.
IMPERATIVE: If the pegging is not possible, recommence the operation.
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ENGINECHECKING AND SETTING THE VALVE TIMING
Engines: RHY - RHZ
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.daN
and angular tighten to A= 60°±5°.
Refit the torque reaction rod on the lower engine support.
Remove the tool [6].
Reposition and reclip the cooling hose.
Complete the refitting of components in reverse order to removal.
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