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BMW E39 523i (2494ccm) 1995-1998


Service Repair Manual

Year1995-1998
Engine codeM52B25
Engine size2494ccm
Power125kw
Idle speed700-800rpm
Compression10.0-11.0bar
Fuel systemSiemens MS 41.0
Firing order1-5-3-6-2-4
Spark plugBosch F7LDCR
NGK BKR6EK
Denso K20TXR
Electrode gap0.9mm
CO0.5%
CO214.5-16.0%
HC100ppm
O20.1-0.5%
CO content at increased idle speed0.3%
Increased idle speed for CO test2500-3000rpm
Lambda0.97-1.03
Radiator cap1.8-2.1bar
Thermostat opens92℃
Ventilator turn on90℃
Battery65Ah
Alternator80A
Cylinder head tightening sequence
BMW 6 pistons Cylinder head tightening sequence
Cylinder head tightening torque 140Nm
Cylinder head tightening torque 290°
Cylinder head tightening torque 390°
Spark plug Tightening torque30Nm
Engine oil with filter6.5l
Cooling system10.5l
Gearbox oil 1.0l
Automatic transmission fluid Fluid = 3.3l / Dry refill = 87.8l
Differential1.0l
Engine oil gradeAPI SH / SJ SAE 5W-30
API SH / SJ SAE 15W-40
Gearbox oil gradeOrange label = ATF Dexron II D
Green label = Synthetic Mobil SCH630(BM) part No. 81-22-9-407-305
Yellow label = MTF-LT-1 / MTF-LT-2
No label = API GL-4 SAE 80
Automatic transmission fluid typeESSO LT 71141
Differential oilBMW SAF-XO
BMW SAF-XLS
Brake fluidDOT4
Wheel info eng
Tire dimension (x/y R z)205/65 R15
225/60 R15
Front wheel presure2.0bar
Rear wheel presure2.3bar
Wheel bolt tightening torque (B)90-110Nm
Front hub tightening torque (H)290Nm
Rear hub tightening torque (H)M22 = 200Nm
M24 = 250Nm
M27 = 300Nm
Brakes info
Minimal front brake disk thickness (R)20.4mm
Minimal rear brake disk thickness (R)8.4 / 17.4mm
Minimal front pad thickness (P)3.0mm
Minimal rear pad thickness (P)3.0mm


Manufacturer

BMW

Model

E39

Type

523i

Year

1995-1998

Engine code

M52B25

Engine size

2494ccm

Power

125kw


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