in your garage to make future searches easy.

Condition Value
expand_moreAir intake system
expand_moreIntake manifold
All other modifications 16.23 lbf⋅ft
Replace screws and nuts.
expand_moreAuxiliary assemblies
expand_moreAuxiliary drive belt tensioner
All other modifications 14.75 lbf⋅ft
expand_moreAuxiliary drive belt tensioner
All other modifications 14.75 lbf⋅ft
expand_moreAir-conditioning compressor
M10 25.81 lbf⋅ft
M8 18.44 lbf⋅ft
Air-conditioning compressor bracket 25.81 lbf⋅ft
Air-conditioning compressor pressure line 29.5 lbf⋅ft
expand_moreAlternator
expand_moreAll other modifications
M10 29.5 lbf⋅ft
M8 22.13 lbf⋅ft
Generator bracket 29.5 lbf⋅ft
expand_morePower steering pump bracket
All other modifications 18.44 lbf⋅ft
Hydraulic lines at the servo-steering pump 20.65 lbf⋅ft
Servo pump pulley 18.44 lbf⋅ft
expand_moreServo steering pump
All Opel gasoline straight-4 1.4 L 14 NV engines 22.13 lbf⋅ft
expand_moreAll other modifications
On the engine block 22.13 lbf⋅ft
expand_moreCarburetion
Fuel-distributing pipe 5.9 lbf⋅ft
Injection hoses 18.44 lbf⋅ft
Injection nozzle (injector) 51.63 lbf⋅ft
expand_moreInjection pump
At the bracket 18.44 lbf⋅ft
M6 8.85 lbf⋅ft
expand_moreInjection pump pulley
All other modifications 18.44 lbf⋅ft
expand_moreCharging
Turbo charger 22.13 lbf⋅ft
expand_moreCooling system
expand_moreCoolant pump
expand_moreAll Opel gasoline straight-4 1.4 L 14 NV engines
M6 5.9 lbf⋅ft
M6 5.9 lbf⋅ft
expand_moreAll other modifications
M6 5.9 lbf⋅ft
M8 14.75 lbf⋅ft
Coolant pump pulley 7.38 lbf⋅ft
expand_moreCylinder head
expand_moreCamshaft bearing
All other modifications 5.9 lbf⋅ft
expand_moreCylinder head screws
expand_moreAll other modifications
Figure 1. Cylinder head, Cylinder head screws, All other modifications.
Figure 1. Cylinder head, Cylinder head screws, All other modifications.
First stage 18.44 lbf⋅ft
Replace screws. See figure 1.
Second stage 60°
Third stage 60°
Fourth stage 60°
expand_moreValve cover
All other modifications 5.9 lbf⋅ft
expand_moreEngine block
expand_moreConnecting rod bearing
expand_moreAll Opel gasoline straight-4 1.4 L 14 NV engines
First stage 18.44 lbf⋅ft
Replace screws and nuts.
Second stage 30°
expand_moreAll other modifications
First stage 18.44 lbf⋅ft
Second stage 30°
expand_moreCrankshaft central screws
expand_moreAll Opel gasoline straight-4 1.4 L 14 NV engines
expand_moreM12
First stage 66.38 lbf⋅ft
Second stage 30°
Third stage 15°
Otherwise 40.57 lbf⋅ft
expand_moreM12
First stage 66.38 lbf⋅ft
Second stage 30°
Third stage 15°
Otherwise 40.57 lbf⋅ft
expand_moreAll other modifications
First stage 95.88 lbf⋅ft
Use new screw.
Second stage 4050°
Crankshaft pulley 14.75 lbf⋅ft
expand_moreFlywheel
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
Second stage 45°
Third stage 15°
expand_moreAll other modifications
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 45°
Third stage 15°
expand_moreEngine control
expand_moreCamshaft drive belt deflection pulley
All other modifications 29.5 lbf⋅ft
expand_moreCamshaft timing gear
expand_moreAll Opel gasoline straight-4 1.4 L 14 NV engines
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 60°
Third stage 15°
All other modifications 33.19 lbf⋅ft
expand_moreToothed belt guard
All other modifications 2.95 lbf⋅ft
Toothed belt guard at the bottom 2.95 lbf⋅ft
Toothed belt guard at the top 2.95 lbf⋅ft
expand_moreToothed belt tensioning roller
All other modifications 14.75 lbf⋅ft
expand_moreEngine lubrication
Oil cooler lines 22.13 lbf⋅ft
expand_moreOil drain plug
All Opel gasoline straight-4 1.4 L 14 NV engines 33.19 lbf⋅ft
All other modifications 40.57 lbf⋅ft
Oil filter 11.06 lbf⋅ft
Oil filter housing 11.06 lbf⋅ft
expand_moreOil lines
expand_moreOil feed lines
On the engine block 14.75 lbf⋅ft
expand_moreReturn line
On engine sump 33.19 lbf⋅ft
Replace sealing rings.
Oil pump 5.9 lbf⋅ft
expand_moreOil sump
expand_moreAll other modifications
expand_moreAt the gearbox
M10 29.5 lbf⋅ft
M8 14.75 lbf⋅ft
On the engine block 5.9 lbf⋅ft
expand_moreEngine management
Crankshaft sensor 5.9 lbf⋅ft
Glow plugs 14.75 lbf⋅ft
expand_moreKnock sensor
All other modifications 9.59 lbf⋅ft
Lambda sensor 22.13 lbf⋅ft
Use assembly paste
expand_moreEngine mounting
Engine bracket 44.25 lbf⋅ft
Use new locking washers.
expand_moreEngine mounting
expand_moreAll other modifications
At the bracket 25.81 lbf⋅ft
Use screw-locking compound.
On chassis 47.94 lbf⋅ft
Use screw-locking compound.
expand_moreExhaust system
expand_moreExhaust manifold
All other modifications 16.23 lbf⋅ft
Replace screws and nuts.
Exhaust pipe 18.44 lbf⋅ft
expand_moreFuel supply
Fuel lines 11.06 lbf⋅ft
expand_moreIgnition system
expand_moreSpark plugs
All other modifications 18.44 lbf⋅ft
expand_moreStart system
expand_moreStarter
expand_moreAll other modifications
M10 33.19 lbf⋅ft
M12 44.25 lbf⋅ft
M8 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 1991 Opel Astra Sedan 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.

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 Sedan 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 1991 Opel Astra Sedan you're not only saving money, but also also improving your technical skills and learning something new.

Opel Astra Sedan F model years

Units:
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