1989 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_moreCooling system


Viscous fan clutch	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreCylinder head screws

expand_moreBMW gasoline straight-4 1.8 L M40 B18 (184E1) 111 HP

Figure 1. Cylinder head, Cylinder head screws, BMW gasoline straight-4 1.8 L M40 B18 (184E1) 111 HP.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
See figure 1.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreBMW gasoline straight-6 3.0 L M30 B30 (306KA) 185 HP

Figure 2. Cylinder head, Cylinder head screws, BMW gasoline straight-6 3.0 L M30 B30 (306KA) 185 HP.


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
See figure 2.
Second stage	Wait 20 minutes.
Third stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Fourth stage	Warm-up run
Fifth stage	35°35°35°

expand_moreBMW gasoline straight-6 3.4 L M30 B34 (346KB) 208 HP


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
See figure 2.
Second stage	Wait 20 minutes.
Third stage	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Fourth stage	Warm-up run
Fifth stage	35°35°35°

expand_moreAll other modifications

Figure 3. Cylinder head, Cylinder head screws, All other modifications.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace, wash and lubricate the screws. See figure 3.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreValve cover


All BMW diesel straight-6 2.4 L M21 D24 (246TB) engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAll other modifications


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


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Third stage	70°70°70°

expand_moreCrankshaft central screws

expand_moreAll BMW diesel straight-6 2.4 L M21 D24 (246TB) engines


M18 × 1,5 screws	302.4 lbf⋅ft302.4 lbf⋅ft410 N⋅m
Use new screw.


All BMW gasoline straight-6 3.0 L M30 B30 (306KA) engines	324.53 lbf⋅ft324.53 lbf⋅ft440 N⋅m
Replace nut.
All BMW gasoline straight-6 3.4 L M30 B34 (346KB) engines	324.53 lbf⋅ft324.53 lbf⋅ft440 N⋅m
Replace nut.
All BMW gasoline straight-4 1.8 L M40 B18 (184E1) engines	243.4 lbf⋅ft243.4 lbf⋅ft330 N⋅m
Replace bolt.
All BMW gasoline straight-4 1.8 L M43 B18 (184E2) engines	243.4 lbf⋅ft243.4 lbf⋅ft330 N⋅m
Replace bolt.
All other modifications	302.4 lbf⋅ft302.4 lbf⋅ft410 N⋅m
Replace bolt.

expand_moreCrankshaft pulley

expand_moreAll other modifications


M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m


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

expand_moreFlywheel


All BMW gasoline straight-4 1.8 L M40 B18 (184E1) engines	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.
All BMW gasoline straight-4 1.8 L M43 B18 (184E2) engines	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.
All other modifications	77.44 lbf⋅ft77.44 lbf⋅ft105 N⋅m
Lightly lubricate the screws thread.

expand_moreMain bearing

expand_moreAluminium engine block


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

expand_moreGrey cast-iron engine block


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	50°50°50°

expand_moreVibration damper


All BMW gasoline straight-6 2.0 L M20 B20 (206KA) engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All BMW gasoline straight-6 2.5 L M20 B25 (256K1) engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll BMW gasoline straight-4 1.8 L M40 B18 (184E1) engines


M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine control

expand_moreCamshaft timing gear


All BMW gasoline straight-6 2.0 L M20 B20 (206KA) engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All BMW gasoline straight-6 2.5 L M20 B25 (256K1) engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreAll BMW diesel straight-6 2.4 L M21 D24 (246TB) engines


M10	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreAll BMW gasoline straight-4 1.8 L M40 B18 (184E1) engines


M10	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreAll BMW gasoline straight-4 1.8 L M43 B18 (184E2) engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	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


Chain tensioner	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m

expand_moreTiming case cover

expand_moreAll BMW gasoline straight-4 1.8 L M43 B18 (184E2) engines


M10	34.67 lbf⋅ft34.67 lbf⋅ft47 N⋅m
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_moreEngine lubrication

expand_moreOil drain plug


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


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	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine management


Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


520 i 24V with gasoline straight-6 2.0 L 148 HP engine (1989.9–1995.9)	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.
520 i 24V with gasoline straight-6 2.0 L 148 HP engine (1989.9–1995.9)	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.
525 i 24V with gasoline straight-6 2.5 L 189 HP engine (1989.9–1995.9)	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace nuts.

expand_moreAll other modifications


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_moreIgnition system


Spark plugs	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1989 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 1989 BMW 5 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

1989 BMW 5 Series Sedan Third generation Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 5 Series Sedan Third generation model years

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