1998 Opel Astra Wagon engine fastener tightening specifications

in your garage to make future searches easy.

Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All Opel gasoline straight-4 1.2 L X 12 XE engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.4 L X 14 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.

expand_moreAll Opel diesel straight-4 2.0 L X 20 DTL engines


Lower section of intake manifold	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.
Upper section of intake manifold	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


All Opel gasoline straight-4 1.4 L Z 14 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.

expand_moreIntake manifold support


All Opel gasoline straight-4 1.4 L X 14 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll other modifications


On intake manifold	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Support on cylinder head	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAuxiliary drive belt tensioner

expand_moreAll Opel gasoline straight-4 1.2 L X 12 XE engines


M10	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


All Opel gasoline straight-4 1.6 L X 16 SZR engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


Self-locking nuts	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Opel diesel straight-4 2.0 L X 20 DTL engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV engines


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


All Opel diesel straight-4 2.0 L Y 20 DTL engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAir-conditioning compressor


All Opel gasoline straight-4 1.4 L X 14 XE engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAll Opel gasoline straight-4 1.6 L X 16 XEL engines


Front	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Rear	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


All Opel diesel straight-4 1.7 L X 17 DTL engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAir-conditioning compressor bracket


All Opel diesel straight-4 1.7 L X 17 DTL engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAir-conditioning compressor pressure line


All Opel gasoline straight-4 1.4 L X 14 XE engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace sealing rings.

expand_moreAlternator

expand_moreAll Opel gasoline straight-4 1.4 L X 14 XE engines


Bottom	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Top	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


Bottom	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Top	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m


All Opel gasoline straight-4 1.8 L X 18 XE1 engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreGenerator bracket


All Opel diesel straight-4 1.7 L X 17 DTL engines	13.28 lbf⋅ft13.28 lbf⋅ft18 N⋅m
All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_morePower steering pump bracket


At the subframe	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreHydraulic lines at the servo-steering pump


Manufacturer Delphi	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Manufacturer TRW	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreServo steering pump


At the bracket	5.16 lbf⋅ft5.16 lbf⋅ft7 N⋅m

expand_moreVacuum pump


All Opel diesel straight-4 1.7 L X 17 DTL engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m

expand_moreCarburetion


Injection pump drive wheel	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m

expand_moreExhaust gas return cooler

expand_moreExhaust gas return valve


All Opel gasoline straight-4 1.2 L X 12 XE engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreExhaust recirculation pipe


All Opel gasoline straight-4 1.2 L X 12 XE engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreFuel-distributing pipe


All Opel gasoline straight-4 1.6 L X 16 SZR engines	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreHigh-pressure line

expand_moreHigh-pressure pump pulley

expand_moreInjection hoses


All Opel diesel straight-4 1.7 L X 17 DTL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreInjection nozzle (injector)


All Opel diesel straight-4 1.7 L X 17 DTL engines	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m

expand_moreAll other modifications


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


Injection pump	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreInjection pump pulley


All Opel diesel straight-4 1.7 L X 17 DTL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreCharging

expand_moreCharge air pipes

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


Clamps	2.58 lbf⋅ft2.58 lbf⋅ft3.5 N⋅m


All other modifications	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m

expand_moreTurbo charger


All Opel diesel straight-4 1.7 L X 17 DTL engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreTurbocharger oil feed line

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


At the turbocharger	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
On the engine block	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll other modifications

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

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


At the turbocharger	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCooling system

expand_moreCoolant drain plug


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

expand_moreCoolant pump


All Opel diesel straight-4 1.7 L X 17 DTL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Opel diesel straight-4 2.0 L X 20 DTL engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Opel diesel straight-4 2.0 L Y 20 DTL engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Use new screws with the screw- locking compound.

expand_moreCoolant pump pulley


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


Fan wheel	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m

expand_moreRadiator mounting


Bottom	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


All Opel diesel straight-4 2.0 L X 20 DTL engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All Opel diesel straight-4 2.0 L Y 20 DTL engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCylinder head screws

expand_moreOpel gasoline straight-4 1.8 L X 18 XE1 114 HP at 5400 RPM, 170 N⋅m at 3400 RPM

Figure 1. Cylinder head, Cylinder head screws, Opel gasoline straight-4 1.8 L X 18 XE1 114 HP at 5400 RPM, 170 N⋅m at 3400 RPM.


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

expand_moreOpel gasoline straight-4 2.0 L X 20 XEV 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws See figure 1.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	90°90°90°
Fifth stage	15°15°15°

expand_moreOpel gasoline straight-4 1.2 L X 12 XE 64 HP at 5600 RPM, 110 N⋅m at 4000 RPM


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws See figure 1.
Second stage	60°60°60°
Third stage	60°60°60°
Fourth stage	60°60°60°

expand_moreOpel diesel straight-4 1.7 L X 17 DTL 67 HP at 4500 RPM, 132 N⋅m at 2400 RPM


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws See figure 1.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	45°45°45°
Fifth stage	Test run
Sixth stage	30°30°30°
Seventh stage	15°15°15°

expand_moreOpel diesel straight-4 2.0 L X 20 DTL 80 HP at 4300 RPM, 185 N⋅m at 1800 RPM


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws See figure 1.
Second stage	65°65°65°
Third stage	65°65°65°
Fourth stage	65°65°65°
Fifth stage	65°65°65°
Sixth stage	15°15°15°

expand_moreOpel gasoline straight-4 1.6 L X 16 XEL 99 HP at 5800 RPM, 135 N⋅m at 3400 RPM

Figure 2. Cylinder head, Cylinder head screws, Opel gasoline straight-4 1.6 L X 16 XEL 99 HP at 5800 RPM, 135 N⋅m at 3400 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	45°45°45°

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


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

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreOpel gasoline straight-4 2.0 L X 20 XEV 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM


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

expand_moreOpel gasoline straight-4 1.2 L X 12 XE 64 HP at 5600 RPM, 110 N⋅m at 4000 RPM

expand_moreM6


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreM6,5


First stage	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreOpel diesel straight-4 1.7 L X 17 DTL 67 HP at 4500 RPM, 132 N⋅m at 2400 RPM


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

expand_moreOpel diesel straight-4 2.0 L X 20 DTL 80 HP at 4300 RPM, 185 N⋅m at 1800 RPM


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

expand_moreOpel gasoline straight-4 1.4 L X 14 XE 89 HP


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

expand_moreAll other modifications


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

expand_moreCrankcase ventilation


All Opel gasoline straight-4 2.0 L X 20 XEV engines	2.58 lbf⋅ft2.58 lbf⋅ft3.5 N⋅m

expand_moreAll other modifications


Crankcase ventilation pipe	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Use new seals.

expand_moreCrankshaft central screws

expand_moreAll Opel gasoline straight-4 1.2 L X 12 XE engines


First stage	110.63 lbf⋅ft110.63 lbf⋅ft150 N⋅m
Replace screws and nuts.
Second stage	45°45°45°

expand_moreAll Opel gasoline straight-4 1.6 L X 16 SZR engines


First stage	70.07 lbf⋅ft70.07 lbf⋅ft95 N⋅m
Replace screws.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL 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 Opel diesel straight-4 2.0 L X 20 DTL engines


First stage	110.63 lbf⋅ft110.63 lbf⋅ft150 N⋅m
Replace screws and nuts.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV 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 gasoline straight-4 1.2 L X 12 XE engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screw.
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreFlywheel

expand_moreAll Opel gasoline straight-4 1.2 L X 12 XE engines


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

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


First stage	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Replace screws and nuts.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreAll Opel diesel straight-4 2.0 L X 20 DTL engines


First stage	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
Replace screws and nuts.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV 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
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreMain bearing

expand_moreOpel gasoline straight-4 1.2 L X 12 XE 64 HP at 5600 RPM, 110 N⋅m at 4000 RPM

expand_moreM6


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Second stage	60°60°60°

expand_moreM8


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

expand_moreOpel diesel straight-4 1.7 L X 17 DTL 67 HP at 4500 RPM, 132 N⋅m at 2400 RPM


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

expand_moreOpel diesel straight-4 2.0 L X 20 DTL 80 HP at 4300 RPM, 185 N⋅m at 1800 RPM


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws and nuts.
Second stage	60°60°60°
Third stage	15°15°15°

expand_moreOpel gasoline straight-4 1.4 L X 14 XE 89 HP


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

expand_moreAll other modifications


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

expand_moreEngine control

expand_moreCamshaft drive belt deflection pulley

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 chain guide rail


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


Camshaft timing chain slip rail	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Use screw-locking compound.
Camshaft timing chain tensioner	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCamshaft timing chain tensioning rail


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreCamshaft timing gear

expand_moreOpel gasoline straight-4 1.2 L X 12 XE 64 HP at 5600 RPM, 110 N⋅m at 4000 RPM


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

expand_moreOpel diesel straight-4 1.7 L X 17 DTL 67 HP at 4500 RPM, 132 N⋅m at 2400 RPM


First stage	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Replace screws.
Second stage	60–65°60–65°60–65°


Opel gasoline straight-4 1.6 L X 16 SZR 74 HP at 5200 RPM, 128 N⋅m at 2800 RPM	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreOpel diesel straight-4 2.0 L X 20 DTL 80 HP at 4300 RPM, 185 N⋅m at 1800 RPM


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Replace screws and nuts.
Second stage	60°60°60°
Third stage	30°30°30°

expand_moreAll other modifications


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

expand_moreChain tensioner


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


Chain tensioner locking screws	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Control drive chain guide rail	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreInlet camshaft wheel

expand_more2.0 16V with gasoline straight-4 2.0 L 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM engine (1998.2–2004.7)


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_more2.0 16V with gasoline straight-4 2.0 L 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM engine (1998.2–2004.7)


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

expand_moreTiming case cover

expand_moreAll Opel gasoline straight-4 1.2 L X 12 XE engines


M10	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
M6	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToothed belt guard at the bottom


Opel gasoline straight-4 2.0 L X 20 XEV 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM	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


All Opel gasoline straight-4 2.0 L X 20 XEV engines	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
All other modifications	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m

expand_moreToothed belt tensioning roller


All Opel diesel straight-4 1.7 L X 17 DTL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToothed belt tightener


All Opel gasoline straight-4 1.8 L X 18 XE1 engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine lubrication

expand_moreOil cooler


All Opel diesel straight-4 1.7 L X 17 DTL engines	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m

expand_moreOil cooler lines


1.7 TD with diesel straight-4 1.7 L 67 HP at 4500 RPM, 132 N⋅m at 2400 RPM engine (1998.2–2000.8)	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil drain plug

expand_moreAll Opel gasoline straight-4 1.4 L X 14 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

expand_moreAll Opel gasoline straight-4 1.6 L X 16 SZR 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

expand_moreWith hexagon-head screws


Sheet-steel sump	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m


All Opel gasoline straight-4 1.6 L X 16 XEL engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


One-part sump	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
Two-part oil sump	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll Opel gasoline straight-4 1.8 L X 18 XE1 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

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV engines


Torx screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
With hexagon-head screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m


All Opel gasoline straight-4 1.6 L Z 16 XE engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.

expand_moreOil filter


All other modifications	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Slightly oil sealing lips.

expand_moreOil filter housing

expand_moreAll Opel gasoline straight-4 1.8 L X 18 XE1 engines


On the engine block	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreOil lines

expand_moreAll other modifications


At the turbocharger	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreOil pressure sensor


All Opel gasoline straight-4 1.2 L X 12 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel diesel straight-4 1.7 L X 17 DTL engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil pump


All Opel gasoline straight-4 1.4 L X 14 XE engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.6 L X 16 SZR engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.6 L X 16 XEL engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.6 L Z 16 XE engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreOil pump chain wheel

expand_moreOil sump

expand_moreAll Opel gasoline straight-4 1.4 L X 14 XE engines


At the gearbox	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
On the engine block	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


All Opel gasoline straight-4 1.6 L X 16 SZR engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Clean the thread and use screw-locking compound.
All Opel gasoline straight-4 1.6 L X 16 XEL engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Clean the thread and use screw-locking compound.

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


One-part sump	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreOtherwise

expand_moreOil sump lower part


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Second stage	30°30°30°

expand_moreOil sump top part


On the engine block	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
At the gearbox	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll Opel diesel straight-4 2.0 L X 20 DTL engines

expand_moreAt the gearbox


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


On the engine block	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV engines


At the gearbox	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Oil sump lower part	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Oil sump top part	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Clean the thread and use screw-locking compound.


All Opel gasoline straight-4 1.6 L Z 16 XE engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Clean the thread and use screw-locking compound.

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


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


Charge air pressure sensor	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreCrankshaft sensor


All Opel gasoline straight-4 1.4 L X 14 XE engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.6 L X 16 SZR engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreGlow plugs


All Opel diesel straight-4 1.7 L X 17 DTL engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreKnock sensor


All Opel gasoline straight-4 1.6 L X 16 SZR engines	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
All Opel gasoline straight-4 1.6 L X 16 XEL engines	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
All Opel gasoline straight-4 1.6 L Z 16 XE engines	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor


All Opel gasoline straight-4 1.4 L X 14 XE engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Opel gasoline straight-4 1.6 L X 16 SZR engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Opel gasoline straight-4 1.6 L X 16 XEL engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Opel gasoline straight-4 1.8 L X 18 XE1 engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Opel gasoline straight-4 1.6 L Z 16 XE engines	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 diesel straight-4 1.7 L X 17 DTL engines	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreAll other modifications


On engine mounting	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreEngine mounting

expand_moreAll Opel gasoline straight-4 1.2 L X 12 XE engines

expand_moreAt the axle support


Front	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreOn chassis


Right	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m


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


All Opel diesel straight-4 1.7 L X 17 DTL engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAll other modifications


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_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_moreExhaust system

expand_moreCatalytic converter


All Opel gasoline straight-4 1.2 L X 12 XE engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All Opel diesel straight-4 1.7 L X 17 DTL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreExhaust manifold

expand_moreAll Opel gasoline straight-4 1.4 L X 14 XE engines


X14XE engine	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.
Z14XE engine	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Replace screws and nuts.


All Opel gasoline straight-4 1.8 L X 18 XE1 engines	21.39 lbf⋅ft21.39 lbf⋅ft29 N⋅m
Replace screws and nuts.

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV engines


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Note correct order of tensioning.
Second stage	Wait 5 minutes.
Third stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.

expand_moreExhaust manifold heat shields


All Opel gasoline straight-4 1.8 L X 18 XE1 engines	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
All other modifications	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m

expand_moreExhaust pipe

expand_moreAll Opel gasoline straight-4 1.6 L X 16 SZR engines


Collar screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Nuts	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m


All Opel diesel straight-4 1.7 L X 17 DTL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


Exhaust pipe bracket	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreExhaust pipe rear


All Opel gasoline straight-4 1.4 L X 14 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.6 L X 16 SZR engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


Exhaust system middle heat protection plate	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m

expand_moreFuel supply


Fuel filter housing	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreFuel lines


All other modifications	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreIgnition system

expand_moreSpark plugs


All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreStart system

expand_moreStarter


All Opel gasoline straight-4 1.4 L X 14 XE engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll Opel gasoline straight-4 1.6 L X 16 XEL engines


Bottom	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Top	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAll Opel diesel straight-4 1.7 L X 17 DTL engines


At the gearbox	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
On the engine block	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreAll Opel gasoline straight-4 1.8 L X 18 XE1 engines


At the gearbox	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
On the engine block	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Opel diesel straight-4 2.0 L X 20 DTL engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreAll Opel gasoline straight-4 2.0 L X 20 XEV engines


At the gearbox	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
On the engine block	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m


All Opel diesel straight-4 2.0 L Y 20 DTL engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Opel gasoline straight-4 1.4 L Z 14 XE engines	29.5 lbf⋅ft29.5 lbf⋅ft40 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 1998 Opel Astra Wagon 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

Chassis and Body Fastener Tightening Specifications
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 Wagon 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 1998 Opel Astra Wagon you're not only saving money, but also also improving your technical skills and learning something new.

1998 Opel Astra Wagon generations

In 1998 Opel offered 2 generations of the Astra Wagon. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.

F facelift

T Platform (T-body, GM2700, GM3000) 1979-2012

1998 Opel Astra Wagon G Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

1998 Opel Astra Wagon generations

F facelift

Opel Astra Wagon G model years

Suggest edit