-
11 31 005 Checking camshaft timing (M52TU / M54)
Remove fan impeller with fan clutch.Remove cylinder head
cover.Remove all spark plugs.
Detach cover for inlet camshaft.
Caution!Cylinder for chain tensioning piston is under
springpressure.
Remove cylinder for chain tensioning piston.
Install special tool 11 4 220.Fit adjusting screw to bow
cover.
RA Checking camshaft timing (M52TU / M54) BMW AG - TIS
22.09.2009 20:25Issue status (10/2001) Valid only until next CD is
issued Copyright Page - 1 -
-
Preload tensioning rail with special tool 11 4 220 by
rotatingadjusting screw with special tool 00 9 250 or standard
torquewrench to 0.7 Nm.
Unscrew oil pressure pipe.
Mount special tool 11 3 450 with banjo bolt of oil
pressureline.
Caution!Cover double VANOS adjustment unit; when thecompressed
air supply is connected, several drops of oil aresprayed out of the
bore.
RA Checking camshaft timing (M52TU / M54) BMW AG - TIS
22.09.2009 20:25Issue status (10/2001) Valid only until next CD is
issued Copyright Page - 2 -
-
Connect compressed air (2 to 8 bar).
Note:When the engine is switched off, it is possible that
thecamshafts are not in their initial positions. With the
compressedair supply connected, rotate the engine to return the
camshaftsto their initial positions.
With compressed air supply connected, crank engine at leasttwo
revolutions in direction of rotation until cam tips on inlet
andexhaust camshafts on 1st cylinder face each other.
Pull dust guard out of the special tool bore.
Secure crankshaft with special tool 11 2 300 in TDC
firingposition of 1st cylinder.
Caution!Do not turn the engine back.Remove special tool 11 2 300
before starting engine.
RA Checking camshaft timing (M52TU / M54) BMW AG - TIS
22.09.2009 20:25Issue status (10/2001) Valid only until next CD is
issued Copyright Page - 3 -
-
Unscrew studs.
Place special tool 11 3 240 on camshafts.
Note:In spite of correctly set camshafts, special tool 11 3 240
mayprotrude by up to 1 mm over inlet side.Reason: Rubberized chain
wheel Tolerances in VANOS adjustment unit Running clearance in
splinesIf special tool 11 3 240 protrudes above the exhaust side,
itwill be necessary to readjust the timing.If necessary, adjust
camshaft timing.
Detach compressed air connection.Remove special tool 11 3
450.
RA Checking camshaft timing (M52TU / M54) BMW AG - TIS
22.09.2009 20:25Issue status (10/2001) Valid only until next CD is
issued Copyright Page - 4 -
-
Fit oil pressure line with new seals.Tightening torque 11 36
2AZ.
Remove special tool 11 3 240.
Remove special tool 11 2 300.Install dust guard from inspection
bore.
Relieve tension on special tool 11 4 220 and remove.
RA Checking camshaft timing (M52TU / M54) BMW AG - TIS
22.09.2009 20:25Issue status (10/2001) Valid only until next CD is
issued Copyright Page - 5 -
-
Install cylinder for chain tensioning piston.Assemble
engine.
RA Checking camshaft timing (M52TU / M54) BMW AG - TIS
22.09.2009 20:25Issue status (10/2001) Valid only until next CD is
issued Copyright Page - 6 -
