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Condition Value
expand_moreAir intake system
expand_moreIntake manifold
All Opel gasoline straight-4 1.6 L A 16 XHT engines 18.44 lbf⋅ft
Tighten screws from the inside outwards.
All Opel diesel straight-4 1.7 L A 17 DTC engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTF engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTS engines 17.7 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 16.23 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 18.44 lbf⋅ft
Tighten screws from the inside outwards.
All Opel gasoline straight-4 2.0 L B 20 NFT engines 18.44 lbf⋅ft
All other modifications 14.75 lbf⋅ft
expand_moreIntake manifold support
All Opel diesel straight-4 1.7 L A 17 DTC engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 17.7 lbf⋅ft
expand_moreAuxiliary assemblies
expand_moreAuxiliary drive belt deflection pulley
All Opel gasoline straight-4 2.0 L A 20 NFT engines 16.23 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 16.23 lbf⋅ft
All other modifications 18.44 lbf⋅ft
expand_moreAuxiliary drive belt tensioner
M10 40.57 lbf⋅ft
M8 16.23 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTC engines 36.14 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 36.14 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 36.14 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 36.88 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 16.23 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 16.23 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 33.19 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 33.19 lbf⋅ft
All other modifications 40.57 lbf⋅ft
expand_moreAir-conditioning compressor
At the bracket 16.23 lbf⋅ft
expand_moreAir-conditioning compressor bracket
M10 33.19 lbf⋅ft
M8 17.7 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 36.88 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 36.88 lbf⋅ft
All other modifications 16.23 lbf⋅ft
expand_moreAir-conditioning compressor pressure line
All Opel diesel straight-4 2.0 L A 20 DTH engines 16.23 lbf⋅ft
All other modifications 14.01 lbf⋅ft
expand_moreAlternator
On the engine block 25.81 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 25.81 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 XER engines 25.81 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 LET engines 25.81 lbf⋅ft
M10 25.81 lbf⋅ft
M8 16.23 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 25.81 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 44.25 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 44.25 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 25.81 lbf⋅ft
All other modifications 16.23 lbf⋅ft
Alternator pulley 59 lbf⋅ft
expand_moreGenerator bracket
M10 35.4 lbf⋅ft
M14 50.15 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 44.25 lbf⋅ft
expand_moreHydraulic lines at the servo-steering pump
Banjo screws 33.19 lbf⋅ft
Servo steering pump 16.23 lbf⋅ft
expand_moreVacuum pump
All Opel diesel straight-4 1.7 L A 17 DTC engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 17.7 lbf⋅ft
First stage 3.69 lbf⋅ft
Replace screws.
Second stage 50°
First stage 3.69 lbf⋅ft
Replace screws.
Second stage 50°
All Opel gasoline straight-4 2.0 L A 20 NFT engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 18.44 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreCarburetion
Exhaust gas return cooler 25.81 lbf⋅ft
Exhaust gas return valve 5.16 lbf⋅ft
Exhaust recirculation pipe 7.38 lbf⋅ft
expand_moreFuel-distributing pipe
Figure 1. Carburetion, Fuel-distributing pipe.
Figure 1. Carburetion, Fuel-distributing pipe.
All Opel gasoline straight-4 1.6 L A 16 XHT engines 7.38 lbf⋅ft
See figure 1.
All Opel diesel straight-4 1.7 L A 17 DTC engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 18.44 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 18.44 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 7.38 lbf⋅ft
See figure 1.
All other modifications 5.16 lbf⋅ft
expand_moreHigh-pressure line
All Opel diesel straight-4 1.7 L A 17 DTC engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 18.44 lbf⋅ft
M12 18.44 lbf⋅ft
M14 14.01 lbf⋅ft
expand_moreAll other modifications
Union nuts 22.13 lbf⋅ft
expand_moreHigh-pressure pump
All Opel diesel straight-4 1.7 L A 17 DTC engines 13.28 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 13.28 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 13.28 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 14.75 lbf⋅ft
M10 36.88 lbf⋅ft
M8 18.44 lbf⋅ft
All other modifications 8.11 lbf⋅ft
Screws need to be loosened or tightened in steps of 180°.
expand_moreHigh-pressure pump pulley
All Opel diesel straight-4 2.0 L A 20 DTH engines 36.88 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 36.88 lbf⋅ft
All other modifications 50.89 lbf⋅ft
expand_moreInjection hoses
All Opel diesel straight-4 1.7 L A 17 DTC engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 18.44 lbf⋅ft
M12 18.44 lbf⋅ft
M14 14.01 lbf⋅ft
expand_moreInjection nozzle (injector)
First stage 29.5 lbf⋅ft
Second stage Loosen screw(s).
Third stage 23.6 lbf⋅ft
Nuts 18.44 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 18.44 lbf⋅ft
All other modifications 3.69 lbf⋅ft
Replace screws.
expand_moreCharging
expand_moreTurbo charger
expand_moreAt the cylinder head
Figure 2. Charging, Turbo charger, Opel gasoline straight-4 1.4 L A 14 NEL, At the cylinder head.
Figure 2. Charging, Turbo charger, Opel gasoline straight-4 1.4 L A 14 NEL, At the cylinder head.
First stage 5.9 lbf⋅ft
See figure 2.
Second stage 5.9 lbf⋅ft
First stage 1.48 lbf⋅ft
Replace nuts.
Second stage 5.9 lbf⋅ft
At the cylinder head 14.75 lbf⋅ft
tighten gradually cross-wise
First stage 11.06 lbf⋅ft
Replace nuts.
Second stage 20.65 lbf⋅ft
expand_moreOn exhaust manifold
First stage 11.06 lbf⋅ft
Second stage 20.65 lbf⋅ft
expand_moreOn exhaust manifold
First stage 22.13 lbf⋅ft
Second stage 25.81 lbf⋅ft
expand_moreAll other modifications
First stage 17.7 lbf⋅ft
Second stage 35.4 lbf⋅ft
Turbocharger bracket 18.44 lbf⋅ft
expand_moreTurbocharger coolant feed line
Banjo screws 25.81 lbf⋅ft
Banjo screws 14.75 lbf⋅ft
expand_moreAll other modifications
Banjo screws 22.13 lbf⋅ft
expand_moreTurbocharger coolant return line
expand_moreAll other modifications
Pressure tube connection 17.7 lbf⋅ft
expand_moreTurbocharger oil feed line
Banjo screws 22.13 lbf⋅ft
Pressure tube connection 17.7 lbf⋅ft
Banjo screws 15.49 lbf⋅ft
Banjo screws 11.06 lbf⋅ft
expand_moreAll other modifications
Banjo screws 14.75 lbf⋅ft
expand_moreTurbocharger oil return line
All Opel gasoline straight-4 1.6 L A 16 XHT engines 7.38 lbf⋅ft
At the turbocharger 6.64 lbf⋅ft
On the engine block 18.44 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 7.38 lbf⋅ft
All other modifications 5.9 lbf⋅ft
expand_moreCooling system
Coolant drain plug 18.44 lbf⋅ft
expand_moreCoolant pump
All Opel gasoline straight-4 1.6 L A 16 LET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 XHT engines 6.64 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTC engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 17.7 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 17.7 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 5.9 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 18.44 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 16.96 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 6.64 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 16.96 lbf⋅ft
expand_moreAll other modifications
expand_moreScrews 1
Figure 3. Cooling system, Coolant pump, All other modifications, Screws 1.
Figure 3. Cooling system, Coolant pump, All other modifications, Screws 1.
First stage 5.9 lbf⋅ft
See figure 3.
expand_moreScrews 2
Figure 4. Cooling system, Coolant pump, All other modifications, Screws 2.
Figure 4. Cooling system, Coolant pump, All other modifications, Screws 2.
Second stage 30°
See figure 4.
expand_moreCoolant pump pulley
All Opel gasoline straight-4 1.6 L A 16 LET engines 14.75 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 XHT engines 6.64 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTC engines 11.06 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 11.06 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 11.06 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 14.75 lbf⋅ft
Recut the thread and use screw-locking compound.
All Opel gasoline straight-4 1.6 L B 16 SHL engines 6.64 lbf⋅ft
All other modifications 16.23 lbf⋅ft
Coolant pump drive wheel 5.9 lbf⋅ft
Fan wheel 2.95 lbf⋅ft
Radiator mounting 16.23 lbf⋅ft
expand_moreCylinder head
expand_moreCamshaft bearing
expand_moreScrews 1 – 8
First stage 5.9 lbf⋅ft
Note correct order of tensioning.
expand_moreScrews 9 – 12
Second stage 1.48 lbf⋅ft
Third stage 5.9 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 XHT engines 6.64 lbf⋅ft
expand_moreAt the cylinder head
Figure 5. Cylinder head, Camshaft bearing, Opel diesel straight-4 1.7 L A 17 DTJ, At the cylinder head.
Figure 5. Cylinder head, Camshaft bearing, Opel diesel straight-4 1.7 L A 17 DTJ, At the cylinder head.
Bearing casing 16.23 lbf⋅ft
Note correct order of tensioning. See figure 5.
Figure 6. Cylinder head, Camshaft bearing, Opel diesel straight-4 1.7 L A 17 DTJ.
Figure 6. Cylinder head, Camshaft bearing, Opel diesel straight-4 1.7 L A 17 DTJ.
Bearing cap 19.91 lbf⋅ft
Note correct order of tensioning. See figure 6.
All Opel gasoline straight-4 2.0 L A 20 NFT engines 7.38 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 6.64 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 7.38 lbf⋅ft
All other modifications 5.9 lbf⋅ft
expand_moreCylinder head screws
Figure 7. Cylinder head, Cylinder head screws, Opel gasoline straight-4 1.6 L A 16 LET.
Figure 7. Cylinder head, Cylinder head screws, Opel gasoline straight-4 1.6 L A 16 LET.
First stage 18.44 lbf⋅ft
Replace screws. See figure 7.
Second stage 90°
Third stage 90°
Fourth stage 90°
Fifth stage 45°
First stage 18.44 lbf⋅ft
Replace screws. See figure 7.
Second stage 90°
Third stage 90°
Fourth stage 90°
Fifth stage 15°
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 90°
Third stage 90°
expand_moreFirst stage
See figure 7.
First step 18.44 lbf⋅ft
Replace screws.
Second step 90°
expand_moreSecond stage
First step 90°
Second step 90°
Third stage 45°
expand_moreRibe CV screws
Figure 8. Cylinder head, Cylinder head screws, Opel diesel straight-4 2.0 L A 20 DTH, Ribe CV screws.
Figure 8. Cylinder head, Cylinder head screws, Opel diesel straight-4 2.0 L A 20 DTH, Ribe CV screws.
First stage 14.75 lbf⋅ft
Replace screws. See figure 8.
Second stage 47.94 lbf⋅ft
Third stage 90°
Fourth stage 90°
Fifth stage 90°
expand_moreTorx screws
First stage 14.75 lbf⋅ft
Use new screws See figure 8.
Second stage 47.94 lbf⋅ft
Third stage 90°
Fourth stage 90°
Fifth stage 90°
Sixth stage 90°
expand_moreRibe screws
Figure 9. Cylinder head, Cylinder head screws, Opel diesel straight-4 2.0 L A 20 DTR, Ribe screws.
Figure 9. Cylinder head, Cylinder head screws, Opel diesel straight-4 2.0 L A 20 DTR, Ribe screws.
First stage 14.75 lbf⋅ft
Replace screws. See figure 9.
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. See figure 9.
Second stage 47.94 lbf⋅ft
Third stage 90°
Fourth stage 90°
Fifth stage 90°
Sixth stage 90°
First stage 22.13 lbf⋅ft
Replace screws.
Second stage 155°
expand_moreAt the cylinder head
Front 25.81 lbf⋅ft
expand_moreAll other modifications
Figure 10. Cylinder head, Cylinder head screws, All other modifications.
Figure 10. Cylinder head, Cylinder head screws, All other modifications.
First stage 25.81 lbf⋅ft
Replace screws. See figure 10.
Second stage 180°
expand_moreValve cover
Figure 11. Cylinder head, Valve cover.
Figure 11. Cylinder head, Valve cover.
All Opel gasoline straight-4 1.4 L A 14 NEL engines 5.9 lbf⋅ft
See figure 11.
All Opel gasoline straight-4 1.4 L A 14 NET engines 5.9 lbf⋅ft
See figure 11.
All Opel gasoline straight-4 1.4 L A 14 XER engines 5.9 lbf⋅ft
See figure 11.
All Opel gasoline straight-4 1.6 L A 16 LET engines 5.9 lbf⋅ft
See figure 11.
Figure 12. Cylinder head, Valve cover, Opel diesel straight-4 2.0 L A 20 DTH.
Figure 12. Cylinder head, Valve cover, Opel diesel straight-4 2.0 L A 20 DTH.
Bearing casing 18.44 lbf⋅ft
Note correct order of tensioning. See figure 12.
Figure 13. Cylinder head, Valve cover.
Figure 13. Cylinder head, Valve cover.
All Opel gasoline straight-4 1.4 L B 14 NEL engines 5.9 lbf⋅ft
See figure 13.
All Opel gasoline straight-4 1.4 L B 14 NET engines 5.9 lbf⋅ft
See figure 13.
All other modifications 7.38 lbf⋅ft
Note correct order of tensioning.
expand_moreEngine block
expand_moreConnecting rod bearing
First stage 25.81 lbf⋅ft
Replace screws.
Second stage 45°
Third stage 15°
First stage 33.19 lbf⋅ft
Replace screws.
Second stage 60°
First stage 18.44 lbf⋅ft
Replace nuts.
Second stage 100°
Third stage 15°
First stage 25.81 lbf⋅ft
Replace screws and nuts.
Second stage 45°
Third stage 15°
First stage 18.44 lbf⋅ft
Replace screws.
Second stage 60°
First stage 18.44 lbf⋅ft
Second stage 60°
First stage 18.44 lbf⋅ft
Replace screws.
Second stage 100°
expand_moreAll other modifications
First stage 18.44 lbf⋅ft
Replace screws.
Second stage 45°
expand_moreCrankshaft central screws
First stage 70.07 lbf⋅ft
Replace screws.
Second stage 45°
Third stage 15°
First stage 184.39 lbf⋅ft
Replace screws.
Second stage 60°
All Opel diesel straight-4 1.7 L A 17 DTC engines 144.56 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 144.56 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 144.56 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 250.77 lbf⋅ft
Use new screw. (left-hand thread)
All Opel diesel straight-4 2.0 L A 20 DTR engines 250.77 lbf⋅ft
Left-hand thread
expand_moreAll other modifications
First stage 110.63 lbf⋅ft
Replace screws.
Second stage 60°
expand_moreCrankshaft pulley
All Opel diesel straight-4 2.0 L A 20 DTH engines 18.44 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 18.44 lbf⋅ft
First stage 110.63 lbf⋅ft
Second stage 100°
All other modifications 14.75 lbf⋅ft
expand_moreDrive plate
All Opel gasoline straight-4 1.6 L A 16 LET engines 44.25 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 118.01 lbf⋅ft
Replace screws.
expand_moreAll other modifications
First stage 25.81 lbf⋅ft
Replace screws.
Second stage 30°
Third stage 15°
Engine block closure screws 47.94 lbf⋅ft
expand_moreFlywheel
First stage 29.5 lbf⋅ft
Replace screws.
Second stage 60°
Tighten cross-wise.
First stage 62.69 lbf⋅ft
Replace screws.
Second stage 30°
Third stage 15°
First stage 25.81 lbf⋅ft
Second stage 30°
Third stage 15°
All Opel diesel straight-4 2.0 L A 20 DTH engines 118.01 lbf⋅ft
Replace screws.
All Opel diesel straight-4 2.0 L A 20 DTR engines 118.01 lbf⋅ft
Replace screws.
First stage 39.09 lbf⋅ft
Second stage 25°
expand_moreAll other modifications
First stage 44.25 lbf⋅ft
Replace screws.
Second stage 45°
Third stage 15°
expand_moreMain bearing
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 45°
Third stage 15°
expand_moreM10
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 120°
Third stage 15°
expand_moreM8
Fourth stage 18.44 lbf⋅ft
First stage 28.76 lbf⋅ft
Replace screws.
Second stage 60°
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 45°
Third stage 15°
First stage 18.44 lbf⋅ft
Replace screws.
Second stage 100°
First stage 18.44 lbf⋅ft
Second stage 100°
First stage 14.75 lbf⋅ft
Second stage 70°
Outside 18.44 lbf⋅ft
expand_moreAll other modifications
expand_moreM6
First stage 7.38 lbf⋅ft
Replace screws.
Second stage 60°
Third stage 15°
expand_moreM8
First stage 18.44 lbf⋅ft
Replace screws.
Second stage 60°
Third stage 15°
expand_moreVibration damper
First stage 70.07 lbf⋅ft
Second stage 45°
Third stage 15°
All other modifications 14.75 lbf⋅ft
expand_moreEngine control
expand_moreBalance shaft timing chain guide rail
Right 8.85 lbf⋅ft
Top 8.85 lbf⋅ft
Balance shaft timing chain tension rail 7.38 lbf⋅ft
expand_moreBottom part of the control unit housing
All other modifications 7.38 lbf⋅ft
expand_moreCamshaft adjuster
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 150°
Third stage 15°
expand_moreAll other modifications
Camshaft adjuster valve 5.9 lbf⋅ft
expand_moreCamshaft drive belt deflection pulley
First stage 14.75 lbf⋅ft
Replace screws.
Second stage 120°
Third stage 15°
All Opel diesel straight-4 2.0 L A 20 DTH engines 36.88 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 36.88 lbf⋅ft
All other modifications 59 lbf⋅ft
expand_moreCamshaft timing gear
All Opel diesel straight-4 2.0 L A 20 DTH engines 95.88 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 88.51 lbf⋅ft
expand_moreAll other modifications
M12 81.87 lbf⋅ft
expand_moreControl drive chain guide rail
All Opel gasoline straight-4 1.4 L A 14 XER engines 5.9 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 7.38 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 7.38 lbf⋅ft
All other modifications 5.16 lbf⋅ft
expand_moreControl drive chain tensioner
All Opel gasoline straight-4 1.4 L A 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 XER engines 5.9 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 55.32 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 55.32 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreControl drive chain tensioning rail
All Opel gasoline straight-4 1.6 L A 16 XHT engines 14.01 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 7.38 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 14.01 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 7.38 lbf⋅ft
All other modifications 14.75 lbf⋅ft
Control drive sprocket wheel 7.38 lbf⋅ft
Replace screws.
expand_moreControl drive timing chain slip rail
All Opel gasoline straight-4 1.6 L A 16 XHT engines 5.16 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 7.38 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 5.16 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 7.38 lbf⋅ft
All other modifications 5.9 lbf⋅ft
expand_moreDrive belt tensioner device
expand_more1.8 with gasoline straight-4 1.8 L 138 HP engine (2011.10–)
expand_moreFirst stage
First step 14.75 lbf⋅ft
Replace screws.
Second step 120°
Second stage 15°
Drive chain balance shaft tensioner 7.38 lbf⋅ft
expand_moreInlet camshaft wheel
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 60°
Third stage 15°
First stage 47.94 lbf⋅ft
Replace screws.
Second stage 120135°
First stage 29.5 lbf⋅ft
Replace screws.
Second stage 55°
First stage 22.13 lbf⋅ft
Second stage 100°
expand_moreAll other modifications
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 60°
expand_moreOil pump drive chain tensioner
Bottom 7.38 lbf⋅ft
Top 18.44 lbf⋅ft
expand_moreOutlet camshaft wheel
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 60°
Third stage 15°
First stage 47.94 lbf⋅ft
Replace screws.
Second stage 120135°
First stage 29.5 lbf⋅ft
Replace screws.
Second stage 55°
First stage 22.13 lbf⋅ft
Second stage 100°
expand_moreAll other modifications
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 60°
expand_moreTiming case cover
M10 25.81 lbf⋅ft
M6 5.9 lbf⋅ft
expand_moreToothed belt guard
All Opel gasoline straight-4 1.8 L A 18 XER engines 4.43 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 6.64 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 6.64 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreToothed belt guard at the bottom
All Opel gasoline straight-4 1.6 L A 16 LET engines 4.43 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 4.43 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreToothed belt guard at the top
All Opel gasoline straight-4 1.6 L A 16 LET engines 4.43 lbf⋅ft
Long screws 7.38 lbf⋅ft
Nuts 7.38 lbf⋅ft
Short screws 7.38 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 2.95 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 6.64 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreToothed belt tensioning roller
First stage 14.75 lbf⋅ft
Replace screws.
Second stage 120°
Third stage 15°
All Opel diesel straight-4 2.0 L A 20 DTH engines 18.44 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 18.44 lbf⋅ft
All other modifications 36.14 lbf⋅ft
expand_moreTop part of control unit housing
expand_moreAll other modifications
M10 25.81 lbf⋅ft
M6 7.38 lbf⋅ft
expand_moreEngine lubrication
expand_moreOil cooler
All Opel gasoline straight-4 1.6 L A 16 LET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 18.44 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreOil drain plug
All Opel diesel straight-4 1.7 L A 17 DTC engines 14.75 lbf⋅ft
Replace sealing rings.
All Opel diesel straight-4 1.7 L A 17 DTE engines 14.75 lbf⋅ft
Replace sealing rings.
All Opel diesel straight-4 1.7 L A 17 DTJ engines 14.75 lbf⋅ft
Replace sealing rings.
All Opel diesel straight-4 2.0 L A 20 DTH engines 14.75 lbf⋅ft
Replace sealing rings.
All Opel diesel straight-4 2.0 L A 20 DTR engines 14.75 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 18.44 lbf⋅ft
All other modifications 10.33 lbf⋅ft
Replace sealing rings.
Oil filter 18.44 lbf⋅ft
expand_moreOil filter housing
Oil filter cover 18.44 lbf⋅ft
On the engine block 16.23 lbf⋅ft
Oil filter cover 18.44 lbf⋅ft
On the engine block 14.75 lbf⋅ft
Oil filter cover 18.44 lbf⋅ft
expand_moreOn the engine block
Banjo screws 81.13 lbf⋅ft
M10 screws 33.93 lbf⋅ft
Oil filter cover 18.44 lbf⋅ft
Replace sealing rings.
On the engine block 36.88 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 36.88 lbf⋅ft
expand_moreAll other modifications
Oil filter cover 18.44 lbf⋅ft
Replace sealing rings.
On the engine block 16.23 lbf⋅ft
Replace sealing rings.
expand_moreOil pressure sensor
All other modifications 25.81 lbf⋅ft
expand_moreOil pump
All Opel gasoline straight-4 1.4 L A 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 XER engines 5.9 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 6.64 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 6.64 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 5.9 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreOil pump chain wheel
expand_moreAll other modifications
First stage 44.25 lbf⋅ft
Second stage Wait 60 seconds.
Third stage Unscrew nut(s).
Fourth stage 44.25 lbf⋅ft
expand_moreOil sump
At the gearbox 29.5 lbf⋅ft
On the engine block 7.38 lbf⋅ft
At the gearbox 42.78 lbf⋅ft
On the engine block 7.38 lbf⋅ft
Oil sump lower part 7.38 lbf⋅ft
Oil sump top part 7.38 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 7.38 lbf⋅ft
At the gearbox 29.5 lbf⋅ft
M6 6.64 lbf⋅ft
M8 18.44 lbf⋅ft
At the gearbox 29.5 lbf⋅ft
expand_moreOn the engine block
M6 6.64 lbf⋅ft
M8 18.44 lbf⋅ft
On the engine block 18.44 lbf⋅ft
expand_moreWith automatic gearbox
At the gearbox 42.78 lbf⋅ft
expand_moreWith manual transmission
At the gearbox 44.25 lbf⋅ft
expand_moreAll other modifications
On the engine block 7.38 lbf⋅ft
expand_moreWith automatic gearbox
At the gearbox 42.78 lbf⋅ft
expand_moreWith manual transmission
At the gearbox 29.5 lbf⋅ft
expand_moreEngine management
expand_moreCamshaft sensor
All Opel gasoline straight-4 1.4 L A 14 NEL engines 4.43 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 4.43 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 XER engines 4.43 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 LET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 4.43 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NEL engines 4.43 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 4.43 lbf⋅ft
All other modifications 7.38 lbf⋅ft
Replace sealing rings.
expand_moreCrankshaft sensor
All Opel gasoline straight-4 1.4 L A 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 XER engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 LET engines 3.69 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 3.32 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 6.64 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 6.64 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 5.9 lbf⋅ft
All other modifications 7.38 lbf⋅ft
Exhaust gas temperature sensor 33.19 lbf⋅ft
expand_moreGlow plugs
With combustion chamber pressure sensor 8.11 lbf⋅ft
Without combustion chamber pressure sensor 7.38 lbf⋅ft
expand_moreM12
With pressure sensor 8.11 lbf⋅ft
M9 7.38 lbf⋅ft
All other modifications 10.33 lbf⋅ft
expand_moreKnock sensor
All Opel gasoline straight-4 1.6 L A 16 XHT engines 16.23 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 16.23 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 18.44 lbf⋅ft
All other modifications 14.75 lbf⋅ft
expand_moreLambda sensor
All Opel diesel straight-4 1.7 L A 17 DTC engines 33.19 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 33.19 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 33.19 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 33.19 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTR engines 33.19 lbf⋅ft
All other modifications 30.98 lbf⋅ft
expand_moreEngine mounting
expand_moreEngine bracket
First stage 44.25 lbf⋅ft
Second stage 45°
Third stage 15°
On the engine block 45.73 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTC engines 44.25 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 44.25 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTF engines 44.25 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 44.25 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTS engines 44.25 lbf⋅ft
expand_moreOn the engine block
M10 36.88 lbf⋅ft
M8 18.44 lbf⋅ft
M10 36.88 lbf⋅ft
M8 18.44 lbf⋅ft
expand_moreAll other modifications
First stage 44.25 lbf⋅ft
Replace screws.
Second stage 4560°
expand_moreEngine mounting
On chassis 45.73 lbf⋅ft
expand_moreOn engine bracket
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 6075°
On chassis 45.73 lbf⋅ft
expand_moreOn engine bracket
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 6075°
Nuts on the chassis 45.73 lbf⋅ft
Screws on the chassis 45.73 lbf⋅ft
expand_moreScrews on the engine bracket
First stage 36.88 lbf⋅ft
Second stage 65°
On chassis 45.73 lbf⋅ft
expand_moreOn engine bracket
First stage 36.88 lbf⋅ft
Second stage 6070°
First stage 36.88 lbf⋅ft
Second stage 6075°
expand_moreAll other modifications
On chassis 45.73 lbf⋅ft
expand_moreOn engine bracket
First stage 36.88 lbf⋅ft
Replace screws.
Second stage 6070°
expand_moreEngine suspension
expand_moreAt the bearing pedestal
First stage 36.88 lbf⋅ft
Second stage 6075°
On chassis 45.73 lbf⋅ft
On the engine block 73.76 lbf⋅ft
Subframe 118.01 lbf⋅ft
expand_moreTorque arm
expand_moreAt the subframe
Front 73.76 lbf⋅ft
Rear 81.13 lbf⋅ft
expand_moreAt the gearbox
Front 73.76 lbf⋅ft
expand_moreOnto torque support bracket
Rear 73.76 lbf⋅ft
expand_moreTorque support bracket
expand_moreAt the gearbox
Rear 73.76 lbf⋅ft
expand_moreExhaust system
expand_moreCatalytic converter
All Opel gasoline straight-4 1.4 L A 14 XER engines 16.23 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 XHT engines 42.78 lbf⋅ft
Replace nuts.
At the turbocharger 33.19 lbf⋅ft
Heat shields 5.9 lbf⋅ft
expand_moreSupport
M10 33.19 lbf⋅ft
M8 18.44 lbf⋅ft
At the turbocharger 33.19 lbf⋅ft
At the cylinder head 14.75 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 14.75 lbf⋅ft
At the turbocharger 36.88 lbf⋅ft
Nuts 25.81 lbf⋅ft
Screws 36.88 lbf⋅ft
All Opel gasoline straight-4 1.6 L B 16 SHL engines 42.78 lbf⋅ft
Replace nuts.
All other modifications 9.59 lbf⋅ft
expand_moreCatalytic converter bracket
All Opel gasoline straight-4 1.6 L A 16 LET engines 16.96 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTC engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 18.44 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 18.44 lbf⋅ft
M10 36.88 lbf⋅ft
M8 14.75 lbf⋅ft
All other modifications 16.23 lbf⋅ft
expand_moreDiesel particulate filter
First stage 4.43 lbf⋅ft
Replace nuts.
Second stage 18.44 lbf⋅ft
expand_moreExhaust manifold
All Opel diesel straight-4 1.7 L A 17 DTC engines 50.89 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTE engines 50.89 lbf⋅ft
Heat shields 7.38 lbf⋅ft
Otherwise 50.89 lbf⋅ft
All Opel diesel straight-4 1.7 L A 17 DTJ engines 50.89 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 14.75 lbf⋅ft
Replace nuts.
At the cylinder head 14.75 lbf⋅ft
First stage 10.33 lbf⋅ft
Second stage 10.33 lbf⋅ft
All other modifications 18.44 lbf⋅ft
expand_moreExhaust manifold heat shields
All Opel gasoline straight-4 1.4 L A 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NEL engines 5.9 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 5.9 lbf⋅ft
All other modifications 7.38 lbf⋅ft
expand_moreExhaust pipe
All Opel gasoline straight-4 1.6 L A 16 LET engines 16.23 lbf⋅ft
At the middle silencer 12.54 lbf⋅ft
On catalytic converter 16.23 lbf⋅ft
All Opel diesel straight-4 2.0 L A 20 DTH engines 16.23 lbf⋅ft
At the middle silencer 16.23 lbf⋅ft
On catalytic converter 42.78 lbf⋅ft
All other modifications 22.13 lbf⋅ft
expand_moreExhaust pipe bracket
expand_moreM10 screws
First stage 44.25 lbf⋅ft
Replace screws.
Second stage 3045°
M8 screws 16.23 lbf⋅ft
Nuts 12.54 lbf⋅ft
expand_moreM10 screws
First stage 44.25 lbf⋅ft
Replace screws.
Second stage 3045°
M8 screws 16.23 lbf⋅ft
Nuts 16.23 lbf⋅ft
Exhaust pipe rear 22.13 lbf⋅ft
Particle filter bracket 16.96 lbf⋅ft
Particulate filter heat protection plate 6.64 lbf⋅ft
expand_moreIgnition system
expand_moreSpark plugs
All Opel gasoline straight-4 2.0 L A 20 NFT engines 14.75 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 14.75 lbf⋅ft
All other modifications 18.44 lbf⋅ft
expand_moreStart system
expand_moreStarter
All Opel gasoline straight-4 1.4 L A 14 NEL engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 NET engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.4 L A 14 XER engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.6 L A 16 LET engines 18.44 lbf⋅ft
Screws 44.25 lbf⋅ft
Stud screws 28.03 lbf⋅ft
All Opel gasoline straight-4 1.8 L A 18 XER engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L A 20 NFT engines 42.78 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NEL engines 18.44 lbf⋅ft
All Opel gasoline straight-4 1.4 L B 14 NET engines 18.44 lbf⋅ft
All Opel gasoline straight-4 2.0 L B 20 NFT engines 42.78 lbf⋅ft
All other modifications 16.23 lbf⋅ft

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2012 Opel Astra GTC 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 GTC 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 2012 Opel Astra GTC you're not only saving money, but also also improving your technical skills and learning something new.

Units:
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