Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual page 85

42
Rear Wheel Suspension, Propshaft
928
piston rod increases as the rod
moves into the damper. If dampers
have been stored for a long time,
pump in and out several times in
installation position.
Replace leaky dampers.
If dampers have depressurized
(damper does not return automati-
cally to expansion-stage and stop),
but show no si ns of escaping oil
(oil staidulfill the
remaining requirements, they can be
reused. Dampers which show traces
of oil leaks and have lost their
gas pressure must be replaced.
Bilstein Dampers
Worn B i 1 s t e i n
d a m p e r s can be readily
identified.
Measure dimension X with damper
completely compressed (i.e. as far
as possible). If dimension X is
larger than 18 mm (new damper
8.5 mm), the damper must be
replaced.
Assembling
Rear-axle springs are available in
three versions. The versions are
color-coded.
The springs with green, yellow and
blue coding are further subdivided
in tolerance groups.
When replacing, always install
springs with the same color coding.
Under no circumstances may yellow,
green and blue springs be combined.
As car height is adjustable, it is
not necessary to correlate spring
groups with certain model types
(e.g. with or without air con-
ditioner, left-hand or right-hand
drive).
Coil spring (green)
928, until end of model year 78
Part No. 928.333.531.09
Gr. F where Color
Order-
LI = 272 mm
code
ing
Index
n
q-!j
1 4719 . ..4817 N 1 green 201
z 4818 4916 .
.
..4915
..5013
N N 2
3
green green 202 203
l
42
- 18b Disassembling and Assembling Spring Strut Printed in Germany