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Condition Value
expand_moreAir intake system
expand_moreIntake manifold
All Vauxhall gasoline straight-4 1.6 L Z 16 XEP engines 14.75 lbf⋅ft
Use new screws or nuts
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 14.75 lbf⋅ft
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
Use new screws or nuts
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 16.23 lbf⋅ft
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 (2006.1–2010.11) 18.44 lbf⋅ft
expand_moreAuxiliary drive belt tensioner
With air-conditioning 18.44 lbf⋅ft
Without air-conditioning system 25.81 lbf⋅ft
All other modifications 36.88 lbf⋅ft
expand_moreAir-conditioning compressor
1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11) 18.44 lbf⋅ft
expand_moreCarburetion
expand_moreInjection nozzle (injector)
1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11) 18.44 lbf⋅ft
expand_moreCharging
expand_moreTurbocharger oil feed line
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 11.06 lbf⋅ft
Replace sealing rings.
expand_moreAt the turbocharger
Banjo screws 8.85 lbf⋅ft
Replace sealing rings.
Support 8.85 lbf⋅ft
expand_moreOn the engine block
Support 25.81 lbf⋅ft
Union nuts 14.75 lbf⋅ft
expand_moreTurbocharger oil return line
At the turbocharger 6.64 lbf⋅ft
Replace sealing rings.
On the engine block 18.44 lbf⋅ft
Replace sealing rings.
At the turbocharger 5.9 lbf⋅ft
Replace sealing rings.
On the engine block 22.13 lbf⋅ft
Replace sealing rings.
expand_moreCylinder head
expand_moreCamshaft bearing
All Vauxhall gasoline straight-4 1.6 L Z 16 XEP engines 5.9 lbf⋅ft
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 5.9 lbf⋅ft
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 5.9 lbf⋅ft
expand_moreCylinder head screws
Figure 1. Cylinder head, Cylinder head screws, Vauxhall gasoline straight-4 1.6 L Z 16 XEP.
Figure 1. Cylinder head, Cylinder head screws, Vauxhall gasoline straight-4 1.6 L Z 16 XEP.
First stage 18.44 lbf⋅ft
Replace screws. See figure 1.
Second stage 90°
Third stage 90°
Fourth stage 45°
First stage 18.44 lbf⋅ft
Replace screws. See figure 1.
Second stage 90°
Third stage 90°
Fourth stage 45°
expand_moreRibe screws
Figure 2. Cylinder head, Cylinder head screws, Vauxhall diesel straight-4 1.9 L Z 19 DTH, Ribe screws.
Figure 2. Cylinder head, Cylinder head screws, Vauxhall diesel straight-4 1.9 L Z 19 DTH, Ribe screws.
First stage 14.75 lbf⋅ft
Replace screws. See figure 2.
Second stage 47.94 lbf⋅ft
Third stage 90°
Fourth stage 90°
Fifth stage 90°
expand_moreTorx screws
First stage 14.75 lbf⋅ft
Replace screws.
Second stage 47.94 lbf⋅ft
Third stage 90°
Fourth stage 90°
Fifth stage 90°
Sixth stage 90°
Figure 3. Cylinder head, Cylinder head screws, Vauxhall gasoline straight-4 2.0 L Z 20 LER.
Figure 3. Cylinder head, Cylinder head screws, Vauxhall gasoline straight-4 2.0 L Z 20 LER.
First stage 18.44 lbf⋅ft
Replace screws. See figure 3.
Second stage 90°
Third stage 90°
Fourth stage 90°
Fifth stage 15°
Valve cover 5.9 lbf⋅ft
expand_moreEngine block
expand_moreConnecting rod bearing
First stage 18.44 lbf⋅ft
Replace screws and nuts.
Second stage 30°
First stage 25.81 lbf⋅ft
Second stage 45°
Third stage 15°
First stage 18.44 lbf⋅ft
Second stage 60°
First stage 25.81 lbf⋅ft
Replace screws and nuts.
Second stage 45°
Third stage 15°
expand_moreCrankshaft central screws
First stage 70.07 lbf⋅ft
Use new screw.
Second stage 30°
Third stage 15°
First stage 70.07 lbf⋅ft
Replace screws.
Second stage 45°
Replace screws.
Third stage 15°
Replace screws.
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 265.52 lbf⋅ft
Use new screw. (left-hand thread)
First stage 95.88 lbf⋅ft
Replace screws and nuts.
Second stage 4050°
expand_moreAll other modifications
First stage 70.07 lbf⋅ft
Use new screw.
Second stage 45°
Third stage 15°
expand_moreCrankshaft pulley
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
All Vauxhall gasoline straight-4 2.0 L Z 20 LEL engines 14.75 lbf⋅ft
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 14.75 lbf⋅ft
expand_moreFlywheel
First stage 44.25 lbf⋅ft
Retap thread in holes and use new screws.
Second stage 45°
Third stage 15°
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 118.01 lbf⋅ft
Clean the thread and use screw-locking compound.
First stage 47.94 lbf⋅ft
Replace screws. Use screw-locking compound.
Second stage 30°
Third stage 15°
expand_moreAll other modifications
First stage 25.81 lbf⋅ft
Second stage 30°
Third stage 15°
expand_moreMain bearing
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 45°
Third stage 15°
First stage 36.88 lbf⋅ft
Second stage 45°
Third stage 15°
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 45°
Third stage 15°
expand_moreVibration damper
First stage 70.07 lbf⋅ft
Second stage 30°
Third stage 15°
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
expand_moreEngine control
expand_moreCamshaft drive belt deflection pulley
First stage 14.75 lbf⋅ft
Replace screws.
Second stage 120°
Third stage 15°
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 36.88 lbf⋅ft
Exhaust side 18.44 lbf⋅ft
Intake-side 18.44 lbf⋅ft
All other modifications 18.44 lbf⋅ft
Replace screws.
expand_moreCamshaft timing gear
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 60°
Third stage 15°
Locking screws 22.13 lbf⋅ft
expand_moreWith camshaft adjuster
First stage 47.94 lbf⋅ft
Second stage 120°
Third stage 15°
Outlet camshaft 88.51 lbf⋅ft
expand_moreInlet camshaft wheel
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 60°
Third stage 15°
expand_moreOutlet camshaft wheel
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 60°
Third stage 15°
expand_moreToothed belt guard
All Vauxhall gasoline straight-4 1.6 L Z 16 LET engines 4.43 lbf⋅ft
All Vauxhall gasoline straight-4 1.6 L Z 16 XER engines 4.43 lbf⋅ft
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 4.43 lbf⋅ft
M6 6.64 lbf⋅ft
M8 18.44 lbf⋅ft
Toothed belt guard at the bottom 4.43 lbf⋅ft
Toothed belt guard at the top 4.43 lbf⋅ft
expand_moreToothed belt tensioning roller
First stage 14.75 lbf⋅ft
Replace screws.
Second stage 120°
Third stage 15°
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
All other modifications 14.75 lbf⋅ft
Replace screws.
expand_moreToothed belt tightener
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 14.75 lbf⋅ft
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 14.75 lbf⋅ft
expand_moreEngine lubrication
expand_moreOil drain plug
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 14.75 lbf⋅ft
All Vauxhall gasoline straight-4 2.0 L Z 20 LEL engines 7.38 lbf⋅ft
Replace sealing rings.
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 7.38 lbf⋅ft
All other modifications 10.33 lbf⋅ft
expand_moreOil filter housing
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 18.44 lbf⋅ft
Heat-exchanger on oil filter housing 18.44 lbf⋅ft
Otherwise 36.88 lbf⋅ft
Use screw-locking compound.
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 11.06 lbf⋅ft
expand_moreOil sump
At the gearbox 29.5 lbf⋅ft
On the engine block 7.38 lbf⋅ft
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 7.38 lbf⋅ft
At the gearbox 29.5 lbf⋅ft
expand_moreOn the engine block
M6 6.64 lbf⋅ft
M8 18.44 lbf⋅ft
At the gearbox 29.5 lbf⋅ft
expand_moreOil sump lower part
First stage 5.9 lbf⋅ft
Replace screws and nuts.
Second stage 30°
Oil sump top part 14.75 lbf⋅ft
expand_moreEngine management
Camshaft sensor 4.43 lbf⋅ft
expand_moreGlow plugs
1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11) 5.9 lbf⋅ft
Knock sensor 14.75 lbf⋅ft
expand_moreLambda sensor
Lambda sensor downstream of catalytic converter 29.5 lbf⋅ft
Lambda sensors in front of catalytic converter 22.13 lbf⋅ft
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 29.5 lbf⋅ft
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 29.5 lbf⋅ft
All Vauxhall gasoline straight-4 2.0 L Z 20 LER engines 29.5 lbf⋅ft
expand_moreEngine mounting
expand_moreEngine bracket
expand_more1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11)
M10 36.88 lbf⋅ft
M8 18.44 lbf⋅ft
expand_moreEngine mounting
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 25.81 lbf⋅ft
On chassis 25.81 lbf⋅ft
Replace screws.
On engine bracket 40.57 lbf⋅ft
Replace screws.
expand_moreEngine suspension
1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11) 40.57 lbf⋅ft
expand_moreExhaust system
expand_moreCatalytic converter
expand_more1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11)
Clamps 47.2 lbf⋅ft
expand_moreCatalytic converter bracket
1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11) 18.44 lbf⋅ft
expand_moreExhaust manifold
All Vauxhall gasoline straight-4 1.8 L Z 18 XER engines 14.75 lbf⋅ft
All Vauxhall diesel straight-4 1.9 L Z 19 DTH engines 18.44 lbf⋅ft
Replace nuts.
First stage 5.9 lbf⋅ft
Note correct order of tensioning.
Second stage Wait 5 minutes.
Replace the nuts and use fitting paste
Third stage 5.9 lbf⋅ft
All other modifications 16.23 lbf⋅ft
Replace screws and nuts.
expand_moreExhaust pipe
expand_more1.9 CDTi with diesel straight-4 1.9 L 148 HP engine (2006.1–2010.11)
Front 14.75 lbf⋅ft
expand_moreIgnition system
Spark plugs 18.44 lbf⋅ft

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2009 Vauxhall 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 Vauxhall warranty policy for your region. In some regions DIY service may invalidate your warranty.

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 Vauxhall 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 Vauxhall Astra TwinTop you're not only saving money, but also also improving your technical skills and learning something new.

Vauxhall Astra TwinTop Fifth generation (MK5) model years

Units:
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