2009 Opel Astra TwinTop engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All Opel diesel straight-4 1.9 L Z 19 DTH engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Use new screws or nuts
All Opel gasoline straight-4 2.0 L Z 20 LEL engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Use new screws or nuts
All Opel gasoline straight-4 2.0 L Z 20 LER engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Use new screws or nuts
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screws or nuts

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAuxiliary drive belt tensioner


All Opel gasoline straight-4 1.8 L Z 18 XE engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


With air-conditioning	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Without air-conditioning system	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m


All other modifications	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.


Air-conditioning compressor	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAir-conditioning compressor pressure line


1.6 Turbo with gasoline straight-4 1.6 L 177 HP at 5500 RPM, 230 N⋅m at 2200 RPM engine (2007.2–)	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


Alternator	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreCarburetion

expand_moreFuel-distributing pipe


1.6 Turbo with gasoline straight-4 1.6 L 177 HP at 5500 RPM, 230 N⋅m at 2200 RPM engine (2007.2–)	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreInjection nozzle (injector)

expand_more1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)


First stage	hand-screwed
Second stage	360°360°360°

expand_moreCharging

expand_moreTurbocharger oil feed line


All Opel diesel straight-4 1.9 L Z 19 DTH engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace sealing rings.

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines

expand_moreAt the turbocharger


Banjo screws	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Replace sealing rings.
Support	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m

expand_moreOn the engine block


Support	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m


Union nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreTurbocharger oil return line

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines


At the turbocharger	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Replace sealing rings.
On the engine block	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace sealing rings.

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


At the turbocharger	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace sealing rings.
On the engine block	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace sealing rings.

expand_moreCooling system

expand_moreCoolant pump


1.6 Turbo with gasoline straight-4 1.6 L 177 HP at 5500 RPM, 230 N⋅m at 2200 RPM engine (2007.2–)	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


All Opel diesel straight-4 1.9 L Z 19 DTH engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
helically from the inside out

expand_moreCylinder head screws


Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 LET engines

Figure 1. Cylinder head, Cylinder head screws, Opel gasoline straight-4 1.6 L Z 16 LET.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
See figure 1.
Second stage	90°90°90°
Fifth stage	45°45°45°

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XEP engines


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws. See figure 1.
Second stage	90°90°90°
Fifth stage	45°45°45°

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws. See figure 1.
Second stage	90°90°90°
Fifth stage	45°45°45°

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines

Figure 2. Cylinder head, Cylinder head screws, Opel diesel straight-4 1.9 L Z 19 DTH.


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screws. See figure 2.
Second stage	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Fifth stage	90°90°90°

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines

Figure 3. Cylinder head, Cylinder head screws, Opel gasoline straight-4 2.0 L Z 20 LEL.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws See figure 3.
Second stage	90°90°90°
Fifth stage	15°15°15°

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LER engines

Figure 4. Cylinder head, Cylinder head screws, Opel gasoline straight-4 2.0 L Z 20 LER.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws. See figure 4.
Second stage	90°90°90°
Fifth stage	15°15°15°

expand_moreAll other modifications

Figure 5. Cylinder head, Cylinder head screws, All other modifications.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws. See figure 5.
Second stage	90°90°90°
Fifth stage	45°45°45°


Valve cover	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 LET engines

expand_moreM8


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreM9


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 1.8 L Z 18 XE engines


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws and nuts.
Second stage	30°30°30°

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws.
Second stage	60°60°60°

expand_moreAll other modifications


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreCrankshaft central screws

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 LET engines


First stage	70.07 lbf⋅ft70.07 lbf⋅ft95 N⋅m
Replace screws.
Second stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 1.8 L Z 18 XER engines


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screw.
Second stage	30°30°30°
Third stage	15°15°15°


All Opel diesel straight-4 1.9 L Z 19 DTH engines	250.77 lbf⋅ft250.77 lbf⋅ft340 N⋅m
Left-hand thread

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


First stage	95.88 lbf⋅ft95.88 lbf⋅ft130 N⋅m
Use new screw.
Second stage	40–50°40–50°40–50°

expand_moreAll other modifications


First stage	70.07 lbf⋅ft70.07 lbf⋅ft95 N⋅m
Use new screw.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreCrankshaft pulley


All Opel diesel straight-4 1.9 L Z 19 DTH engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Opel gasoline straight-4 2.0 L Z 20 LEL engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 2.0 L Z 20 LER engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreFlywheel


All Opel diesel straight-4 1.9 L Z 19 DTH engines	118.01 lbf⋅ft118.01 lbf⋅ft160 N⋅m
Clean the thread and use screw-locking compound.

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


First stage	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Replace screws. Use screw-locking compound.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreAll other modifications


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreMain bearing

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws.
Second stage	100°100°100°
helically from the inside out

expand_moreAll other modifications


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Use new screws and nuts.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreVibration damper


1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine control

expand_moreCamshaft drive belt deflection pulley

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	120°120°120°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 1.8 L Z 18 XE engines


Exhaust side	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Intake-side	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Opel diesel straight-4 1.9 L Z 19 DTH engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws.

expand_moreCamshaft timing gear

expand_moreAll Opel gasoline straight-4 1.8 L Z 18 XER engines


Locking screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreWith camshaft adjuster


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	150°150°150°
Third stage	15°15°15°


All Opel diesel straight-4 1.9 L Z 19 DTH engines	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m

expand_moreAll other modifications


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreInlet camshaft wheel

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 LET engines


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


Cap	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace sealing rings.

expand_moreCentral screws


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Use new screw.
Second stage	150°150°150°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreOutlet camshaft wheel

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 LET engines


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


Cap	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace sealing rings.

expand_moreCentral screws


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Use new screw.
Second stage	150°150°150°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreToothed belt guard


All Opel gasoline straight-4 1.8 L Z 18 XE engines	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All other modifications	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreToothed belt guard at the bottom


All Opel gasoline straight-4 1.8 L Z 18 XE engines	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
All other modifications	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreToothed belt guard at the top


All Opel gasoline straight-4 1.8 L Z 18 XE engines	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
All other modifications	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreToothed belt tensioning roller

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	120°120°120°
Third stage	15°15°15°


All Opel diesel straight-4 1.9 L Z 19 DTH engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.

expand_moreToothed belt tightener


All Opel gasoline straight-4 1.8 L A 18 XER engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.6 L Z 16 LET engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.
All Opel gasoline straight-4 1.8 L Z 18 XER engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel diesel straight-4 1.9 L Z 19 DTH engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine lubrication

expand_moreOil drain plug

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XEP engines


Aluminium oil sump (Torx screws)	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
Aluminium oil sump (hexagon-head screws)	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
Sheet-steel sump	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreAll Opel gasoline straight-4 1.8 L Z 18 XE engines


Torx screws	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
With hexagon-head screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m


All Opel diesel straight-4 1.9 L Z 19 DTH engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 2.0 L Z 20 LEL engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.
All Opel gasoline straight-4 2.0 L Z 20 LER engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.
All other modifications	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
Replace sealing rings.

expand_moreOil filter housing


All Opel gasoline straight-4 1.8 L A 18 XER engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 LET engines


On the engine block	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Opel gasoline straight-4 1.8 L Z 18 XER engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Opel diesel straight-4 1.9 L Z 19 DTH engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreOil lines

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines

expand_moreOil feed lines at the turbo charger


Banjo screws	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace sealing rings.

expand_moreReturn line at the cylinder head


M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace sealing rings.

expand_moreReturn line at turbocharger


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Replace sealing rings.

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines

expand_moreOil feed lines


Turbo charger union nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace sealing rings.

expand_moreOil feed lines at the turbo charger


At the bracket	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreReturn line


Turbo charger	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace sealing rings.

expand_moreReturn line at the turbo charger


Banjo screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace sealing rings.


Oil pump	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreOil sump


At the gearbox	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines

expand_moreOn the engine block


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines

expand_moreOil sump lower part


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws and nuts.
Second stage	30°30°30°


Oil sump top part	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll other modifications


On the engine block	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Clean the thread and use screw-locking compound.

expand_moreEngine management

expand_moreCamshaft sensor


All Opel gasoline straight-4 1.8 L Z 18 XE engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All other modifications	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreCrankshaft sensor


1.6 Turbo with gasoline straight-4 1.6 L 177 HP at 5500 RPM, 230 N⋅m at 2200 RPM engine (2007.2–)	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreGlow plugs


1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XEP engines


Lambda sensor downstream of catalytic converter	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Lambda sensors in front of catalytic converter	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m


All other modifications	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Use assembly paste

expand_moreEngine mounting

expand_moreEngine bracket


All Opel gasoline straight-4 1.6 L Z 16 XER engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreAll Opel diesel straight-4 1.9 L Z 19 DTH engines


M10	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine mounting

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


On chassis	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
On engine bracket	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreAll Opel gasoline straight-4 1.8 L Z 18 XE engines


On chassis	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.
On engine bracket	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Replace screws.


All Opel diesel straight-4 1.9 L Z 19 DTH engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAll other modifications

expand_moreOn chassis


Left	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Right	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreOn engine bracket


Right	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreEngine suspension


1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreSubframe


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreSubframe stiffening plate


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreTorque arm

expand_moreAt the subframe


Bottom	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Replace nuts.

expand_moreAt the gearbox


Bottom	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreExhaust system

expand_moreCatalytic converter

expand_more1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)


Clamps	47.2 lbf⋅ft47.2 lbf⋅ft64 N⋅m

expand_moreCatalytic converter bracket


1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreExhaust manifold


All Opel gasoline straight-4 1.8 L A 18 XER engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.6 L Z 16 LET engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Tighten in several steps.
All Opel gasoline straight-4 1.6 L Z 16 XE1 engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.
All Opel gasoline straight-4 1.6 L Z 16 XEP engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.

expand_moreAll Opel gasoline straight-4 1.6 L Z 16 XER engines


Nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


All Opel gasoline straight-4 1.8 L Z 18 XE engines	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Replace screws and nuts.
All Opel gasoline straight-4 1.8 L Z 18 XER engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel diesel straight-4 1.9 L Z 19 DTH engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.

expand_moreAll Opel gasoline straight-4 2.0 L Z 20 LEL engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Note correct order of tensioning.
Second stage	Wait 5 minutes.
Replace the nuts and use fitting paste
Third stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreExhaust pipe

expand_more1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2005.9–)


Front	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreIgnition system


Spark plugs	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreStart system


Starter	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2009 Opel Astra TwinTop user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Opel warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Opel Astra TwinTop service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2009 Opel Astra TwinTop you're not only saving money, but also also improving your technical skills and learning something new.

2009 Opel Astra TwinTop H Engine Fastener Tightening Specifications

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Conquer your fears and never give up!

Opel Astra TwinTop H model years

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