2004 Vauxhall Astra Coupe engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM	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
Replace screws and nuts.

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt tensioner

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM


With air-conditioning	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 197 HP


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	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreCharging

expand_moreTurbocharger oil feed line

expand_moreAt the turbocharger


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

expand_moreOn the engine block


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


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_moreCylinder head

expand_moreCamshaft bearing

expand_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP


Guide bearing	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Otherwise	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m


All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCylinder head screws

expand_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP

expand_moreScrews 1 – 10

Figure 1. Cylinder head, Cylinder head screws, Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP, Screws 1 – 10.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 1.
Second stage	75°75°75°
Third stage	75°75°75°
Fourth stage	15°15°15°

expand_moreScrews 11 – 14


Fifth stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Use screw-locking compound.

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM

Figure 2. Cylinder head, Cylinder head screws, Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws. See figure 2.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	90°90°90°
Fifth stage	15°15°15°

expand_moreAll other modifications


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws. See figure 2.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	90°90°90°
Fifth stage	45°45°45°

expand_moreValve cover


Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws.
Second stage	50°50°50°
Third stage	50°50°50°
Fourth stage	10°10°10°

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM


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

expand_moreAll other modifications


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

expand_moreCrankshaft central screws

expand_moreVauxhall gasoline straight-4 1.8 L Z 18 XE 117 HP


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_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace screws.
Second stage	75°75°75°
Third stage	15°15°15°

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM


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
Replace screws.
Second stage	45°45°45°
Third stage	15°15°15°


Crankshaft pulley	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreFlywheel

expand_moreVauxhall gasoline straight-4 1.8 L Z 18 XE 117 HP


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

expand_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP


First stage	39.09 lbf⋅ft39.09 lbf⋅ft53 N⋅m
Clean the thread, use new screws and screw-locking compound.
Second stage	25°25°25°

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM


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 and nuts.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreMain bearing

expand_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP

expand_moreM10


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Tighten new screws in inside-to-outside order.
Second stage	70°70°70°
Third stage	15°15°15°


M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll other modifications


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace screws.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreEngine control

expand_moreCamshaft drive belt deflection pulley

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 197 HP


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

expand_moreAll other modifications


Inlet camshaft	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Outlet camshaft	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreCamshaft timing gear

expand_moreAll Vauxhall gasoline straight-4 2.2 L Z 22 SE engines


First stage	62.69 lbf⋅ft62.69 lbf⋅ft85 N⋅m
Replace screws.
Second stage	30°30°30°
Third stage	15°15°15°

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_moreChain tensioner

expand_more2.2 16V with gasoline straight-4 2.2 L 145 HP engine (2000.3–2005.8)


Balance shaft timing chain	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Camshaft timing chain	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Clean the thread.

expand_moreInlet camshaft wheel


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


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


Toothed belt guard	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m

expand_moreToothed belt guard at the bottom


Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
Vauxhall gasoline straight-4 2.0 L Z 20 LET 197 HP	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
All other modifications	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m

expand_moreToothed belt guard at the top


Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
Vauxhall gasoline straight-4 2.0 L Z 20 LET 197 HP	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
All other modifications	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m


Toothed belt tensioning roller	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToothed belt tightener


1.8 16V Dualfuel with gasoline straight-4 1.8 L 117 HP engine (2002.9–2005.8)	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine lubrication

expand_moreOil drain plug


Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.
Vauxhall gasoline straight-4 2.0 L Z 20 LET 197 HP	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.

expand_moreAll other modifications


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

expand_moreOil filter housing


Vauxhall gasoline straight-4 1.8 L Z 18 XE 123 HP	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAll other modifications


Cap	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
On the engine block	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreOil sump

expand_moreVauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP


At the gearbox	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
On the engine block	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM


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

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


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


Vauxhall gasoline straight-4 1.8 L Z 18 XE 117 HP	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Vauxhall gasoline straight-4 1.8 L Z 18 XE 123 HP	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All other modifications	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreKnock sensor


Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor


Vauxhall gasoline straight-4 1.8 L Z 18 XE 123 HP	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Vauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreEngine mounting


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.

expand_moreExhaust system

expand_moreExhaust manifold


Vauxhall gasoline straight-4 1.8 L Z 18 XE 123 HP	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Replace screws and nuts.
Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m

expand_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 188 HP at 5400 RPM, 250 N⋅m at 1950 RPM


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_moreVauxhall gasoline straight-4 2.0 L Z 20 LET 197 HP


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


All other modifications	21.39 lbf⋅ft21.39 lbf⋅ft29 N⋅m
Replace screws and nuts.

expand_moreIgnition system

expand_moreSpark plugs


Vauxhall gasoline straight-4 2.2 L Z 22 SE 145 HP	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	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 2004 Vauxhall Astra Coupe 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.

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 Vauxhall Astra Coupe 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 2004 Vauxhall Astra Coupe you're not only saving money, but also also improving your technical skills and learning something new.

2004 Vauxhall Astra Coupe Fourth generation facelift (MK4) Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Vauxhall Astra Coupe Fourth generation facelift (MK4) model years

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