UH
1
L
L
,
129
4S3
•
0.1-0.4
mm
(0.0039-0.0158 In)
Group
27
Reconditioning
engine
Cylinder
head, cleaning, inspection
Check
tappets
for
damage,
scoring
etc
Test valve
springs
in a spring
tester
Two
different types are in use.
Type 2
springs
are
used
on
E32
E33
B
21
F
LH
·Jetronic, late types (introduced
from
1983
modeis)
823
F
B
19
ET,
B
21
ET
and B
21
FT
late types (introduced
from
1984 modeis)
Typa 2 springs can also be used on B
21
F LH·Jetronic
early
types and B
19
ET,
B
21
ET
and B
21
FT
early types.
Type 1
springs
are
used
on
all
other
engine
types.
Import.nt:
Do
not
interchange
adjusting
shims
and
springs
in
same
engine
types.
Type1
Type 2
Length Load
Length
Load
mm (in) N
(Ib.)
mm
(in)
N (Ib.)
45.0 (1.77) O
45.5 (1.79) O
38.0 (1.50)
280-320
38.0
(1.50)
280-320
(62-70)
(62-70)
27.0 (1.06) 710-790
27.5 (1.08)
702-782
(156-174)
(154-172)
E34
Check
camshaft
end
float
Place camshaft
in
cylinder
head.
Fit rear bearing cap.
Slide camshaft
to
and
fro
and measure end float.
End
floal - 0.1- 0.4
mm
(0.0039-0.0158 in)
If end float is
100
large, repiace rear bearing cap.
Check
belt
tensioner
Check roller
for
excessive wear.
E35
Running face
of
roller
must
not be dam
ag
ed.
If surface
is
grooved both roller and belt
must
be replaced.
47
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