timing BMW 540i 1999 E39 M62TU Engine Workshop Manual

BMW 540i 1999 E39 M62TU Engine Workshop Manual 540i 1999 E39 BMW BMW https://www.carmanualsonline.info/img/1/2821/w960_2821-0.png BMW 540i 1999 E39 M62TU Engine Workshop Manual

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 3
M62 TU VANOS
OVERVIEW
The  variable  intake  valve  timing  system  on  the  M62  TU  continues  to  be  identified  as
VANOS.  This acronym comes from the German words; V
Ariable NOckenwellen Steue

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 4
VANOS BENEFITS
The design of a camshaft for a non adjustable valve timing system is limited to the required
overallperformance of the engine.  
• An  intake  camshaft  with  an advanced(early)  pr

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 5
BASIC FUNCTION OF BMW VANOS SYSTEMS
All BMW VANOS systems are operated through electric/hydraulic/mechanical control. 
Electric Control: The engine control module is responsible for activating a VAN

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BMW 540i 1999 E39 M62TU Engine Workshop Manual VANOS TRANSMISSION:The  primary  and  secondary  timing  chain  sprockets  are  inte-
grated with the VANOS transmission.  The transmission is a self contained unit.  
The  controlled  adjustment  of

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 9
M62 TU VANOS CONTROL
As  the  engine  camshafts  are  rotated  by  the  primary  and  secondary  timing  chains,  the
ME7.2 control module activates the VANOS solenoids via a PWM (pulse width modula

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 11
VANOS SERVICE NOTES
VALVE TIMING PROCEDURES
Refer to TIS for complete Valve Timing Procedures.M62 TU valve timing adjustment is sim-
ilar  to  the  previous  non  VANOS  M62  engine with the except

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 12
VANOS SOLENOID REPLACEMENT
Refer  to  TIS  repair  manual  section  for  com-
plete solenoid replacement procedures.  
The solenoids are threaded into the oil distri-
bution flanges through a small

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BMW 540i 1999 E39 M62TU Engine Workshop Manual 19
INPUT SIGNALS/COMPONENTS 
CAMSHAFT POSITION SENSORS
Located on the upper timing case covers, the camshaft position sensors monitor the posi-
tion of the camshafts to establish start of ignition fir