Valvetronic Motors
One Valvetronic motor is located on top of each
cylinder head towards the inside of the engine
“V”. The motors are capable of traveling from
minimum to maximum lift in 300 milli-seconds.
N
No
otte
e::
The Valvetronic motor must first be removed in order to remove the cylinder head
cover. The eccentric shaft must be in the minimum lift position and the motor must be
wound out from the eccentric shaft. The worm gear could otherwise be damaged when
separating the worm shaft and the worm wheel as the eccentric shaft springs back (due to
the torque compensation spring).
IIff iitt iis
s n
no
ott p
po
os
ss
siib
blle
e tto
o rre
em
mo
ov
ve
e tth
he
e m
mo
otto
orr,, d
du
ue
e tto
o m
me
ec
ch
ha
an
niic
ca
all ffa
aiillu
urre
e o
orr s
sttiic
ck
kiin
ng
g,, tth
he
e w
wo
orrm
m
s
sh
ha
afftt c
ca
an
n b
be
e m
mo
ov
ve
ed
d u
us
siin
ng
g a
an
n A
Alllle
en
n k
ke
ey
y tto
o rre
elle
ea
as
se
e tth
he
e m
mo
otto
orr.. A
A h
ho
olle
e m
mu
us
stt b
be
e d
drriilllle
ed
d iin
n tth
he
e
rre
ea
arr p
plla
as
sttiic
c m
mo
otto
orr c
co
ov
ve
err iin
n o
orrd
de
err tto
o a
ac
cc
ce
es
ss
s tth
he
e m
mo
otto
orr s
sh
ha
afftt ((w
wo
orrm
m s
sh
ha
afftt)) u
us
siin
ng
g tth
he
e A
Alllle
en
n k
ke
ey
y..
T
Th
he
e m
mo
otto
orr c
ca
an
n tth
he
en
n n
no
o llo
on
ng
ge
err b
be
e u
us
se
ed
d..
The Valvetronic motor worm gear rotates the
eccentric shaft clockwise or counterclockwise
at a very quick rate (1).
Due to the progressive “lobe” on the eccentric
shaft, this rotation positions the intermediate
lever (2) closer or further to the camshaft lobe.
N
No
otte
es
s::
26
N62 Engine
1
2
Valvetronic Motor
1. Cylinder Head Cover, Cylinder Bank 1-4
2. Valvetronic Motor for Eccentric Shaft Adjustment
42-02-29
43-22-28
Содержание N62B44
Страница 6: ...4 N62 Engine 42 02 02...
