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ENGINE
SPECIAL FEATURES - TIGHTENING TORQUES (m.daN)
Flywheel
Flywheel4,8 ± 0,4
Clutch mechanism2 ± 0,2
Lubrication circuit
Oil pump2,3 ± 0,2
Coolant/oil heat exchanger7 ± 0,7
Injection circuit
Injector on cylinder head9 ± 0,9
Diesel fuel heater1,5 ± 0,1
Injection pump2 ± 0,2
Union on injector2,5 ± 0,2
Injection pump pulley2,3 ± 0,2
Cooling circuit
Coolant pump1,5 ± 0,1
Coolant inlet housing1,8 ± 0,1 Engine: WJY
XSARA
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Page 142 of 462
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ENGINESPECIAL FEATURES - TIGHTENING TORQUES (m.daN)
Flywheel
Flywheel4,8 ± 0,4
Clutch mechanism2 ± 0,2
Lubrication circuit
Oil pump1,6 ± 0,2
Coolant oil heat exchanger7 ± 0,7
Turbocharger lubrication pipe
Engine end4,8 ± 0,4
Turbocharger end2,2 ± 0,2
Injection circuit
Injector fixing flange nut3 ± 0,3
Unions on fuel high pressure common injection rail2 ± 0,2
Injection pump on support2,3 ± 0,2
Union on diesel injector2 ± 0,2
Injection pump pulley5 ± 0,5
Union on fuel high pressure pump2 ± 0,2
Cooling circuit
Coolant pump1,5 ± 0,1
Coolant inlet housing1,8 ± 0,1 Engines: RHY - RHZ
XSARA
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Page 147 of 462
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ENGINE
SPECIAL FEATURES - TIGHTENING TORQUES (m.daN)
Cylinder block
9 Oil circuit plug 3 ± 0,3
10 Coolant pump screw 1,6 ± 0,3
Crankshaft bearing cap screws (*)
11Pre-tightening2,5 ± 0,2
Angular tightening60°±5°
Con rod cap nuts
Tightening1
12Slackening 180°
Tightening2,3 ± 0,1
Angular tightening45°±5°
Engine: RHR
B1CP0GNPB1CP0DGC
(*) (11) Crankshaft bearing cap screws
C4
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ENGINE
SPECIAL FEATURES - TIGHTENING TORQUES (m.daN)
Lubrication
16 Oil pump screw 1,6 ± 0,1
17 Piston skirt spray jet screw 1 ± 0,1
18 Drain plug 3,4 ± 0,4
Oil sump (length 40 mm )
19Pre-tightening1
Tightening1,6 ± 0,3
Oil sump (length 21 mm)
20Pre-tightening1
Tightening1,6 ± 0,3
21 Electric oil gauge 2,7 ± 0,2
Engine: RHR
B1CP0GPP
C4
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ENGINESPECIAL FEATURES - TIGHTENING TORQUES (m.daN)
Lubrication
22 Oil pressure switch 2 ± 0,2
Oil filter support (*)
23Tightening1 ± 0,1
Tightening2 ± 0,2
24 Oil filter cover 2,5 ± 0,5
Engine: RHR
B1CP0GPPB1FP062C
(*) (23) Sequence of tightening
C4
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Page 154 of 462

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ENGINESPECIAL FEATURES - CYLINDER HEAD TIGHTENING
Engines all types
B1DP05BC
Cleaning to be carried out just prior to refitting the cylinder head.
WARNING: Clean the contact faces with the approved CITROËN cleaning product.
Do not use abrasives or cutting tools on the contact faces.
The contact faces must not bear any traces of impact or scratching.
Insert a tap in the threads of the holes in the cylinder block receiving the cylinder head bolts.
Brush the threads of the cylinder head bolts..
Oil the threads and under the heads of the bolts, usingMOLYKOTE G RAPID PLUS.
EnginesTightening Cylinder head bolts
(m.daN)(Max. reusable length in mm)
NFUTightening2 ± 0,2
Angular tightening260° ± 5°122 ± 0,3
Pre-tightening1,5 ± 0,2
KFUTightening2,5 ± 0,2 119
Angular tightening200° ± 5°
6FZ - RFNPre-tightening1,5 ± 0,1
147
Tightening5 ± 0,1
RFJAngular slackening360° ± 2° 127,5 ± 0,5
Tightening2 ± 0,75
RFKAngular tightening285° ± 5° 144,5 ± 0,5
NOTE: Tightening of the cylinder head after a repair is prohibited.
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ENGINE
SPECIAL FEATURES - CYLINDER HEAD TIGHTENING
Engines all types
B1DP05BC
Cleaning to be carried out just prior to refitting the cylinder head.
WARNING: Clean the contact faces with the approved CITROËN cleaning product.
Do not use abrasives or cutting tools on the contact faces.
The contact faces must not bear any traces of impact or scratching.
Insert a tap in the threads of the holes in the cylinder block receiving the cylinder head bolts.
Brush the threads of the cylinder head bolts..
Oil the threads and under the heads of the bolts, using MOLYKOTE G RAPID PLUS.
EnginesTightening Cylinder head bolts
(m.daN)(Max. reusable length in mm)
Pre-tightening2 ± 0,2
WJYTightening6 ± 0,6 125,5
Angular tightening180° ± 5°
Pre-tightening2 ± 0,2
RHY - RHZTightening6 ± 0,6 133,3
Angular tightening220° ± 5°
Pre-tightening2 ± 0,2
Tightening6 ± 0,6
RHRSlackening360° 134,5
Pre-tightening2 ± 0,2
Tightening6 ± 0,6
Angular tightening220° ± 5°
NOTE: Tightening of the cylinder head after a repair is prohibited.
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ENGINESPECIAL FEATURES - CYLINDER HEAD TIGHTENING
Engines all types
B1DP1CLC
Cleaning to be carried out just prior to refitting the cylinder head.
WARNING: Clean the contact faces with the approved CITROËN cleaning product.
Do not use abrasives or cutting tools on the contact faces.
The contact faces must not bear any traces of impact or scratching.
Insert a tap in the threads of the holes in the cylinder block receiving the cylinder head bolts.
Brush the threads of the cylinder head bolts. Oil the threads and under the heads of the bolts, using MOLYKOTE G RAPID PLUS.
EnginesTightening Cylinder head bolts
(m.daN)(Max. reusable length in mm)
Pre-tightening2 ± 0,2
KFW - NFV
Angular tightening240° ± 5°175,5
Pre-tightening2 ± 0,2
8HX - 8HZ
Tightening4 ± 0,4 149
8HY
Angular tightening230° ± 5°
Pre-tightening2 ± 0,2
9HY - 9HZ
Tightening4 ± 0,4 147
9HX
Angular tightening260° ± 5°
NOTE: Tightening of the cylinder head after a repair is prohibited.
B1BP10LC
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