Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSTRANSMISSION AND DRIVETRAINSYSTEM SPECIFICATIONS4HP-22/24
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
4HP-22/24
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION 4HP-22/24
Automatic Transmission
4HP-22/24
Transmission to Engine Hex Head Bolts
M8 24 Nm
M10 45 Nm
M12 78 Nm
Torx Bolts
M8 24 Nm
M10 42 Nm
M12 63 Nm
Reinforcement to transmission
M8 22 Nm
Transmission Extension
M8 23 Nm
Cover
M6 6 Nm
Converter Bell Housing
M8 23 Nm
M10 46 Nm
Transfer Plate Plug
M10 15 Nm
M14 40 Nm
M20 50 Nm
Oil Sump
M6 8 Nm
M6 6 Nm
Oil Drain Plug
M10 15 Nm
Oil Filler Pipe 98 Nm
Oil Plug
M18 40 Nm
Output Flange Collar Nut
M6 100 Nm
Torx Screws for Clutch Fork to Transmission Case
M6 10 Nm
Valve body to transmission
M6 7 Nm
Valve housing to valve body
M6 5 Nm
Oil Pump
M6 10 Nm
Governor Flange to Transmission
M8 17 Nm
Centrifugal governor stud
M6 3 Nm
Hexagon nut on stud 9 Nm
Centrifugal governor Screw
M6 10 Nm
Governor housing to hub
M6 10 Nm
Pressure Regulator to Valve Body
M6 5 Nm
Solenoid to Valve Body
M6 5 Nm
Transmission Socket to Case
M26 12 Nm
Torque Converter
M8 25 Nm
M10 47 Nm
Transmission Lever to Transmission
M8 8 Nm
Crossmember to Body 21 Nm
Rubber mount to crossmember or transmission 21 Nm
Pipe support to engine carrier
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.