1997 BMW 5 Series Sedan engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreCarburetion

expand_moreHigh-pressure pump pulley


M14 × 1,5 screws	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreInjection hoses


Union nuts	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreCharging

expand_moreTurbo charger


On exhaust manifold	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Use hot screw paste


Turbocharger oil feed line	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace sealing rings.

expand_moreCylinder head

expand_moreCamshaft bearing

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten the bearing covers of the camshafts in 1/2 turning steps from outside to inside.
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Tighten the bearing covers of the camshafts in 1/2 turning steps from outside to inside.
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Tighten the bearing covers of the camshafts in 1/2 turning steps from outside to inside.

expand_moreAll other modifications


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreCylinder head screws

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP

Figure 1. Cylinder head, Cylinder head screws, BMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP.


First stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
See figure 1.
Second stage	slacken
Loosen all screws half a turn.
Third stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Fourth stage	90°90°90°
Fifth stage	90°90°90°
Sixth stage	Warm-up run
25 min
Seventh stage	90°90°90°

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 141 HP


First stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
See figure 1.
Second stage	slacken
Loosen all screws half a turn.
Third stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Fourth stage	90°90°90°
Fifth stage	90°90°90°
Sixth stage	Warm-up run
25 min
Seventh stage	90°90°90°

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM

Figure 2. Cylinder head, Cylinder head screws, BMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
See figure 2.
Second stage	80°80°80°
Third stage	80°80°80°

expand_moreBMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
See figure 2.
Second stage	80°80°80°
Third stage	80°80°80°

expand_moreAll other modifications


Second stage	90°90°90°
Third stage	90°90°90°

expand_moreAluminium engine block

Figure 3. Cylinder head, Cylinder head screws, All other modifications, Aluminium engine block.


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
See figure 3.

expand_moreGrey cast-iron engine block


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
See figure 3.

expand_moreValve cover


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screw, wash and slightly oil.
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Third stage	80°80°80°

expand_moreBMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screw, wash and slightly oil.
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Third stage	80°80°80°

expand_moreAll other modifications


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace, wash and lightly lubricate the screws.
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Third stage	70°70°70°

expand_moreCrankshaft central screws

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace bolt.
Second stage	60°60°60°
Third stage	60°60°60°
Fourth stage	30°30°30°

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 141 HP


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace bolt.
Second stage	60°60°60°
Third stage	60°60°60°
Fourth stage	30°30°30°

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace bolt.
Second stage	60°60°60°
Third stage	60°60°60°
Fourth stage	30°30°30°


All other modifications	302.4 lbf⋅ft302.4 lbf⋅ft410 N⋅m
Replace bolt.


Drive plate	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.

expand_moreFlywheel


All other modifications	77.44 lbf⋅ft77.44 lbf⋅ft105 N⋅m
Lightly lubricate the screws thread.

expand_moreMain bearing

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace, wash and lightly lubricate the screws.
Second stage	50°50°50°

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 141 HP


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace, wash and lightly lubricate the screws.
Second stage	50°50°50°

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace bolts.
Second stage	45°45°45°

expand_moreBMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace the screws, do not wash off the coating.

expand_moreM10


Second stage	70°70°70°

expand_moreM11


Second stage	100°100°100°

expand_moreAll other modifications

expand_moreAluminium engine block


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Tighten the new screws evenly in several steps.
Second stage	70°70°70°

expand_moreGrey cast-iron engine block


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Tighten the new screws evenly in several steps.
Second stage	50°50°50°

expand_moreVibration damper


BMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
BMW gasoline V8 3.5 L M62 B35 (358S2) 232 HP at 5800 RPM, 345 N⋅m at 3800 RPM	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
BMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll other modifications


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Replace bolts.
Second stage	60°60°60°
Third stage	60°60°60°

expand_moreEngine control

expand_moreCamshaft timing gear

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP


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

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 141 HP


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

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM

expand_moreVanos


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Second stage	slacken
Loosen the camshaft pulley screws one quarter of a turn.

expand_moreVanos inlet camshaft


Third stage	81.13 lbf⋅ft81.13 lbf⋅ft110 N⋅m

expand_moreVanos, Outlet camshaft


Third stage	92.2 lbf⋅ft92.2 lbf⋅ft125 N⋅m


Otherwise	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreBMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP

expand_moreVanos


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Second stage	slacken
Loosen the camshaft pulley screws one quarter of a turn.

expand_moreVanos inlet camshaft


Third stage	81.13 lbf⋅ft81.13 lbf⋅ft110 N⋅m

expand_moreVanos, Outlet camshaft


Third stage	92.2 lbf⋅ft92.2 lbf⋅ft125 N⋅m


Otherwise	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAll other modifications


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreChain tensioner


All other modifications	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m

expand_moreChain tensioner locking screws

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM


M22 × 1,5 screws	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreBMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP


M26	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreAll other modifications


M30 × 1 screws	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
M40 × 1,5 screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreTension rail bearing screws


M16 × 1,5 screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace the bolt

expand_moreEngine lubrication

expand_moreOil drain plug

expand_moreAll other modifications


M12 × 1,5 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


Oil filter housing	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil sump

expand_moreAll other modifications


M6 screws (class 10.9)	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
M6 8.8	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8 screws (class 8.8)	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine management

expand_moreGlow plugs

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP

expand_moreM5


Nuts	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m


Otherwise	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 141 HP

expand_moreM5


Nuts	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m


Otherwise	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


All other modifications	13.28 lbf⋅ft13.28 lbf⋅ft18 N⋅m


Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Lambda sensor	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreExhaust system

expand_moreCatalytic converter


M10	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
Replace nuts. Use hot screw paste.

expand_moreExhaust manifold

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 114 HP


At the turbocharger	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
On the engine block	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.

expand_moreBMW diesel straight-6 2.5 L M51 D25 (256T1) 141 HP


At the turbocharger	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
On the engine block	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.

expand_moreBMW gasoline V8 3.5 L M62 B35 (358S1) 232 HP at 5700 RPM, 320 N⋅m at 3300 RPM


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace nuts.
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace nuts.
M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts.

expand_moreBMW gasoline V8 4.4 L M62 B44 (448S2) 282 HP


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace the nuts and use fitting paste
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace the nuts and use fitting paste
M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace the nuts and use fitting paste


All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace the nuts and use fitting paste

expand_moreIgnition system

expand_moreSpark plugs

expand_moreAll other modifications


M12 × 1,25 screws	14.75–19.18 lbf⋅ft14.75–19.18 lbf⋅ft20–26 N⋅m
M14 × 1,25 screws	19.91–24.34 lbf⋅ft19.91–24.34 lbf⋅ft27–33 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1997 BMW 5 Series 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 BMW 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 BMW 5 Series 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 1997 BMW 5 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

1997 BMW 5 Series Sedan Fourth generation Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 5 Series Sedan Fourth generation model years

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