1996 Opel Omega Wagon engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


Opel diesel straight-6 2.5 L 25 DT 129 HP	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws and nuts.
Opel diesel straight-6 2.5 L X 25 TD 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws and nuts.
Opel diesel straight-6 2.5 L X 25 DT 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace screws and nuts.
Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Opel gasoline V6 3.0 L X 30 XE 208 HP	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_moreAuxiliary assemblies

expand_moreAuxiliary drive belt tensioner


All Opel gasoline straight-4 2.0 L X 20 XEV engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreAuxiliary drive belt tensioner


All Opel gasoline V6 2.5 L X 25 XE engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All Opel gasoline V6 3.0 L X 30 XE engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreServo pump pulley


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	30°30°30°
Third stage	15°15°15°

expand_moreCarburetion

expand_moreHigh-pressure pump pulley

expand_moreInjection nozzle (injector)


All other modifications	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m

expand_moreCooling system


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

expand_moreCoolant pump pulley


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

expand_moreCylinder head

expand_moreCamshaft bearing


Opel diesel straight-6 2.5 L 25 DT 129 HP	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Opel diesel straight-6 2.5 L X 25 TD 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Opel diesel straight-6 2.5 L X 25 DT 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	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 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM

Figure 1. Cylinder head, Cylinder head screws, Opel gasoline straight-4 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 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°

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP

Figure 2. Cylinder head, Cylinder head screws, Opel diesel straight-6 2.5 L 25 DT 129 HP.


First stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Use new screws. See figure 2.
Second stage	loosen by 180°
Third stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Fourth stage	90–100°90–100°90–100°
Fifth stage	90–100°90–100°90–100°
Sixth stage	Warm-up run
25 min
Seventh stage	90–100°90–100°90–100°

expand_moreOpel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM

Figure 3. Cylinder head, Cylinder head screws, Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws. See figure 3.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	90°90°90°
Fifth stage	15°15°15°

expand_moreOpel gasoline V6 3.0 L X 30 XE 208 HP


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws. See figure 3.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	90°90°90°
Fifth stage	15°15°15°

expand_moreAll other modifications

Figure 4. Cylinder head, Cylinder head screws, All other modifications.


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws See figure 4.
Second stage	90°90°90°
Third stage	90°90°90°
Fourth stage	90°90°90°
Fifth stage	15°15°15°

expand_moreValve cover


Opel diesel straight-6 2.5 L 25 DT 129 HP	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Opel diesel straight-6 2.5 L X 25 DT 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Opel diesel straight-6 2.5 L X 25 TD 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	70°70°70°

expand_moreAll other modifications


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_moreCrankshaft central screws

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Second stage	90°90°90°
Third stage	60°60°60°

expand_moreOpel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM


First stage	184.39 lbf⋅ft184.39 lbf⋅ft250 N⋅m
Use new screw.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreOpel gasoline V6 3.0 L X 30 XE 208 HP


First stage	184.39 lbf⋅ft184.39 lbf⋅ft250 N⋅m
Use new screw.
Second stage	45°45°45°
Third stage	15°15°15°

expand_moreAll other modifications


First stage	95.88 lbf⋅ft95.88 lbf⋅ft130 N⋅m
Use new screw.
Second stage	40–50°40–50°40–50°


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

expand_moreFlywheel

expand_moreOpel gasoline straight-4 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Second stage	30°30°30°
Third stage	15°15°15°


Opel diesel straight-6 2.5 L 25 DT 129 HP	82.61 lbf⋅ft82.61 lbf⋅ft112 N⋅m
Opel diesel straight-6 2.5 L X 25 DT 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	82.61 lbf⋅ft82.61 lbf⋅ft112 N⋅m
Opel diesel straight-6 2.5 L X 25 TD 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	82.61 lbf⋅ft82.61 lbf⋅ft112 N⋅m

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


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

expand_moreAll other modifications


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_moreMain bearing

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Second stage	50°50°50°

expand_moreOpel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM


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_moreOpel gasoline V6 3.0 L X 30 XE 208 HP


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_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_moreVibration damper

expand_moreEngine control

expand_moreCamshaft drive belt deflection pulley

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


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


All other modifications	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreCamshaft timing gear


Opel gasoline straight-4 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	35°35°35°

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_moreAll other modifications


Cap	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Chain tensioner	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m

expand_moreTension rail bearing screws

expand_moreTiming case cover

expand_moreToothed belt guard


All Opel gasoline straight-4 2.0 L X 20 SE engines	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
All Opel gasoline straight-4 2.0 L X 20 XEV engines	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


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

expand_moreEngine lubrication

expand_moreOil drain plug


Opel gasoline straight-4 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


M12	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
M16	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

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


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


Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreOpel gasoline V6 3.0 L X 30 XE 208 HP


Torx screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
With hexagon-head screws	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreOil filter housing


Opel gasoline straight-4 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


Metal cap	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Plastic cap	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


Opel gasoline straight-4 2.0 L X 20 XEV 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil sump


Opel gasoline straight-4 2.0 L X 20 SE 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Clean the thread and use screw-locking compound.

expand_moreOpel diesel straight-6 2.5 L 25 DT 129 HP


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

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


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.


Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Clean the thread and use screw-locking compound.

expand_moreOpel gasoline V6 3.0 L X 30 XE 208 HP

expand_moreOil sump top part

expand_moreAt the gearbox


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


On the engine block	11.06 lbf⋅ft11.06 lbf⋅ft15 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°

expand_moreEngine management

expand_moreCamshaft sensor


All Opel gasoline straight-4 2.0 L X 20 XEV engines	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
All other modifications	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


Crankshaft sensor	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreGlow plugs


All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreKnock sensor


All Opel gasoline straight-4 2.0 L X 20 SE 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 other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor


All Opel gasoline V6 2.5 L X 25 XE engines	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use assembly paste

expand_moreExhaust system

expand_moreExhaust manifold


Opel diesel straight-6 2.5 L 25 DT 129 HP	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m
Replace screws and nuts.
Opel diesel straight-6 2.5 L X 25 TD 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m
Replace screws and nuts.
Opel diesel straight-6 2.5 L X 25 DT 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m
Replace screws and nuts.
Opel gasoline V6 2.5 L X 25 XE 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.
Opel gasoline V6 3.0 L X 30 XE 208 HP	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.
All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws and nuts.

expand_moreIgnition system


Spark plugs	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 1996 Opel Omega 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

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 Omega 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 1996 Opel Omega Wagon you're not only saving money, but also also improving your technical skills and learning something new.

1996 Opel Omega Wagon B Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Opel Omega Wagon B model years

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