Porshe 911 (997). Manual - part 254

Then loosen the lock nut using
the socket-wrench insert P
9630/2

 .

Counter when loosening at the
piston rod or stop plate -2- .

To do this for PASM spring
struts, use retaining tool P
9630/1

 and for conventional

spring struts arm bracket P
9630

.

On PASM spring struts, first
align the stop plate -2- with the
supporting mount -3- (offset 45°
from direction of travel marking).

-2-

Stop plate

(2 versions).

PASM version: With two
grooves (two cut-outs), for
countering when loosening
and tightening lock nut -1- .

1

Fit dome upwards, towards lock
nut.

On PASM spring struts, align
(position) the stop plate with the
supporting mount.

-3-

Spring strut mount

1

-4-

Bearing with housing

1

Make sure it is seated properly in
the spring strut mount

-5-

Support ring

1

-6-

Spring plate (compensating
plate)

1

Observe allocation according to
the coil spring tolerance range.

-7-

Stop plate

1

Fit dome downwards.

-8-

Cone washer

1

Mount in correct position.

-9-

1

Observe allocation as per Spare
Parts Catalogue.
Sport-type running gear
(Performance): approx. 52 mm
long.
Standard and PASM running
gear: approx. 80 mm long.

-10-

Bellows

1

If necessary, replace. Fit on
additional spring -9- .

-11-

Coil spring

1

Observe allocation as per Spare
Parts Catalogue.
Replace coil springs only in pairs.

-X-

Washer (only present on
Performance running gear)

1

Remove from damper tube (not
always present).

Only install on sport-type running
gear (Performance) (conventional
spring struts with -20 mm).
Installation position: Ventilation
grooves must point to the
additional spring -9- .

-12-

Vibration damper

1

Observe allocation as per Spare
Parts Catalogue.
The item number is shown on the

Diagnostic system: reading out fault memory and activating systems

Component and assembly overview (with and without PASM)

1173

damper tube.

-13-

Mount for clip (vibration
balancer)

1

-14-

Clip (vibration balancer).

Not always present.

1

Disassembling and assembling spring strut

Disassembling spring strut

ATTENTION

Increased risk of accidents due to spring tensioning.

Danger of injury and damage from springs jumping out.

• 

→ Never use an impact bolter to loosen or tighten the fastening nut.

→ Use a commercially available changeover ratchet.

1. To prevent damage (deformation), clamp the spring strut in a suitable clamping block (tensioning

device for MacPherson spring struts). Alternatively, the spring clamp can also be held in a
retaining device.

Tensioning front spring

2. Pre-tension the coil spring using spring clamp for spring struts NR.121 until the piston rod is relieved.

The appropriate forks must be inserted into the spring clamp.

Diagnostic system: reading out fault memory and activating systems

 Disassembling and assembling spring strut

1174

Spring strut supporting mount (PASM version)

3. To loosen the lock nut (piston rod to spring-strut mount) use socket-wrench insert P 9630/2.

When loosening the nut, counter it at the piston rod (for conventional spring struts) or at the two
grooves (cut-outs) of the stop plate (for PASM spring struts). Tools required: retaining tool P
9630/1

 and for conventional spring struts arm bracket P 9630.

4. Remove all parts from the piston rod.

Coil spring/compensating plate allocation

Colour identification of spring/damper

Identification marking -A- comprising two coloured lines is for the spring constant and spring length
(depending on vehicle version and equipment).
Identification marking -B- comprising one coloured line (white or green) is for the coil spring tolerance range
(load group) and determines the thickness of the spring plate (compensating plate).

Diagnostic system: reading out fault memory and activating systems

Disassembling spring strut

1175

Spring plate (compensating plate)

The spring plate (compensating plate) comes in two thicknesses -arrows- .

Colour identification A

of coil spring

Vehicle version and equipment

Example

violet/red

Standard running gear C2 RoW/USA - Coupe
with manual transmission

Example

red/yellow

PASM running gear C2/C2S RoW/USA -
Cabriolet with manual transmission and
Tiptronic

Colour identification B

of coil spring

Spring plate (compensating plate)  1)

One white line
(colour identification B)

Thickness 3.5 mm 2)

One green line
(colour identification B)

Thickness 6.5 mm 2)

1)  If you are installing new coil springs, then order the 3.5 mm and 6.5 mm spring plates (compensating plate) at the same time. As coil springs of load group
1 or 2 will be supplied, the correct spring plates (compensating plates) will then be present for installation.
2)  In production there have been deviations from the general allocation of spring plates (thickness of compensating plate), in some cases different spring
plates (compensating plates) have been installed. This was necessary due to the tolerances of the coil springs. This means that in the event of replacement: If
the coil spring is to be re-used, then install the spring plate (compensating plate) with the same thickness. If the coil springs are to be replaced (only replace in
pairs) then the allocation given above applies.

Allocation of vibration dampers

See allocation in Spare Parts Catalogue.

Diagnostic system: reading out fault memory and activating systems

Coil spring/compensating plate allocation

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