Mounting point for shock absorber
Lock nut
Dimension of top of adjusting
nut/mounting point for shock
absorber (standard spring strut)
– Dimension of top of adjusting
nut/mounting point for shock
absorber (new spring strut)

Secure lock nut ( Figure 4 -5-) to adjusting
nut ( Figure 4 -3-).

Figure 4

Tightening torque 50 Nm (37 ftlb.) +/-5 Nm (+/-3.5 ftlb.)
2.4

2.5

Feb 10, 2016
Page 6 of 11

Disassemble faulty spring strut ( Workshop
Manual 4085 Disassembling front spring
strut) and assemble new spring strut as
shown in Figure 5 ( Figure 5 ).
1
2
3
4
5

–
–
–
–
–

6
7
8
9
10
11
12

–
–
–
–
–
–
–

13

–

14

–

Shock absorber (new)
Lock nut (new)
Adjusting nut (new)
Concave washer (lower, re-use)
Coil spring (re-use, ONLY for lowered
chassis: new)
Bellows-type protective tube (new)
Concave washer (upper, re-use)
Spacer sleeve (re-use)
Supporting mount (re-use)
Hexagon nut, M8 (new)
Nut, M14 x 1.5 (new)
Seal (perform visual inspection, use
new seal if necessary)
Push-on connector for ABS line
(re-use)
Wear indicator clip (re-use)

Figure 5

Convert new spring strut for the other side of the vehicle in the same way.

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2016© Porsche Cars North America, Inc.

911 (993)

Technical Information
2.6

145/15 ENU

4495

4

Install both spring struts  Workshop Manual
40 8519 Installing front spring strut (front
axle, right:  Figure 6 ).
1
2
3
4
5
6

–
–
–
–
–
–

Coil spring
Bellows-type protective tube
Shock absorber
Concave washer (lower)
Adjusting nut
Lock nut

ONLY for vehicles with lowered chassis
(M033): Also install spring struts on rear axle
(see Step 3)!
3

Convert and install spring strut for rear axle.

Figure 6
3.1

Measure dimension X1 (spring plate –
lower/bushing for shock absorber Figure
7 -X1-) on the standard shock absorber.
1
2
3
4
X1

–
–
–
–
–

Standard shock absorber
New shock absorber
Spring plate – lower
Bushing for shock absorber
Dimension of spring plate
(lower)/bushing for shock absorber

Figure 7

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AfterSales

Feb 10, 2016
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4

911 (993)
4495

Technical Information

ENU 145/15

3.2

Adjust dimension X2 (spring plate –
lower/bushing for shock absorber  Figure
8 -X2-) in accordance with dimension X1
(standard spring strut).
1
2
3
4
5
X1

X2

– Standard shock absorber
– New shock absorber
– Spring plate – lower = Concave
washer (lock nut, silver)
– Bushing for shock absorber
– Joint bearing
– Dimension of lower spring
plate/bushing for shock absorber
(standard spring strut)
– Dimension of lower spring
plate/bushing for shock absorber
(new spring strut)
Figure 8

3.3

Prepare shock absorbers for installation
(left/right side of vehicle  Figure 9).
1
2
3
X

Feb 10, 2016
Page 8 of 11

– Joint bearing
– Spring plate – lower = Concave
washer (lock nut, silver)
– Bushing for shock absorber
– Dimension = 21°

3.3.1

Loosen joint bearing slightly from
the concave washer (lock nut, silver
 Figure 9 -2-).

3.3.2

Adjust dimension X = 21° as
required ( Figure 9).

3.3.3

Screw concave washer (lock nut, silver  Figure 9 -2-) hand-tight to the joint
bearing ( Figure 9 -1-).

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Figure 9

2016© Porsche Cars North America, Inc.

911 (993)

Technical Information
3.4

4495

4

Disassemble faulty spring strut ( Workshop
Manual 4271 Disassembling rear spring
strut) and assemble new spring strut as
shown in Figure 10 ( Figure 10 ).
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

3.5

145/15 ENU

– Shock absorber (new)
– Concave washer (lock nut, silver –
new)
– Coil spring (re-use, ONLY for lowered
chassis: new)
– Additional spring, plastic (new)
– Bellows (new)
– Concave washer, 14 x 48 x 3.5
(new)
– Sleeve (new)
– Plate (re-use)
– Intermediate piece, 3.0/5.5/8.0
mm (re-use)
– Supporting mount (re-use)
– Hexagon nut, M8, DIN EN 1664
(new)
– Stop plate (re-use)
– Hexagon nut, M12 x 1.25 (new)
– Suspension/stabilizer (new)
– Hexagon nut, M10 (new)

Figure 10

Convert new spring strut for the other side of the vehicle in the same way.

2016© Porsche Cars North America, Inc.

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911 (993)
4495

Technical Information

ENU 145/15

3.6

Install both spring struts, see also 
Workshop Manual 42 7119 Installing rear
spring strut.
1
2
3
4
5
6

–
–
–
–
–
–

Coil spring
Concave washer (lock nut, silver)
Joint bearing
Shock absorber
Suspension/stabilizer
Anti-roll bar

3.6.1

Loosely pre-fit left/right spring strut
at the relevant installation position
in the vehicle.
Loosen concave washer (lock
nut) slightly if necessary and turn
joint bearing/shock absorber
slightly into position so that it is
connected without tension to the
body/steering knuckle.

3.6.2

Figure 11

Secure concave washer (lock nut) to joint bearing.
Tightening torque 100 Nm (74 ftlb.)

3.6.3
4

Fit new suspension/stabilizer as shown in Figure 11 ( Figure 11 ).

Concluding work
4.1

Perform complete suspension alignment  Workshop Manual 440503 Suspension
alignment, complete
Adjustment values  Workshop Manual 4405 Adjustment values for suspension alignment

4.2

Remove vehicle from lifting platform.

40 95 20 00:

–Removing and installing front spring strut (2 x)–

40 90 20 50:

–Removing and installing front shock absorber (2 x)–

42 71 20 00:

–Removing and installing rear spring strut (2 x)–

42 72 20 50:

–Removing and installing rear coil spring (2 x)–

Feb 10, 2016
Page 10 of 11

AfterSales

Labor time: 150 TU

Labor time: 90 TU

Labor time: 160 TU

Labor time: 80 TU

2016© Porsche Cars North America, Inc.

911 (993)

Technical Information

145/15 ENU

4495

4

44 95 03 00:

–Performing suspension alignment at front and rear–

Labor time: 100 TU

44 95 15 50:

–Adjusting vehicle at front and rear–

Labor time: 200 TU

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. If a particular condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your authorized Porsche Dealer for the latest information
about whether a particular technical bulletin applies to your vehicle. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify the current and
correct part numbers. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS
Tester are the ones that must be followed.
© Porsche Cars North America, Inc.

Dealership
Distribution
Routing

Service Manager

_______

Shop Foreman

_______

Service Technician

________

_______

_______

_______

Asst. Manager

_______

Warranty Admin.

_______

Service Technician

________

_______

_______

_______

Dr. Ing. h.c. F. Porsche AG is the owner of numerous trademarks, both registered and unregistered, including without limitation the Porsche Crest®, Porsche®, Boxster®, Carrera®, Cayenne®,
Cayman®, Macan®, Panamera®, Speedster®, Spyder®, 918 Spyder®, Tiptronic®, VarioCam®, PCM®, PDK®, 911®, RS®, 4S®, FOUR, UNCOMPROMISED®, and the model numbers and the
distinctive shapes of the Porsche automobiles such as, the federally registered 911 and Boxster automobiles. The third party trademarks contained herein are the properties of their respective owners.
Porsche Cars North America, Inc. believes the specifications to be correct at the time of printing. Specifications, performance standards, standard equipment, options, and other elements shown are
subject to change without notice. Some options may be unavailable when a car is built. Some vehicles may be shown with non-U.S. equipment. The information contained herein is for internal authorized
Porsche dealer use only and cannot be copied or distributed. Porsche recommends seat belt usage and observance of traffic laws at all times.
Printed in the USA

2016© Porsche Cars North America, Inc.

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Feb 10, 2016
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