Porsche 911 TURBO - 1989 Instruction manual

911 turbo FrontWheel,Suspension
Technical data
Wheel suspension independent wheel suspension with
control arms and spring struts
Suspension one round torsion bar per wheel, longitudinal
Torsion bar " 18.8mm
Height adjustment -
at DIN curb weight Page 44 -1
Shock absorbers double-action hydraulic
shock absorber struts
Manufacturer Bilstein -different configuration from Mod. 89
onwards
Anti-roll bar 0 18 mm -from Model 77 onward 0 20 mm
from Model 85 onward 0 22 mm
40 -01
Technical data
Printed in Germany -VII, 1989

40 General
TORQUE SPECIFICATIONS FOR FRONT AXLE
Location Designation Threads Class Torque
Nm ft Ib
Support bearing to
strut Nut M 14 x 1.5 880 58
Support bearingto
body Capscrew M 10 8.8 47 34
Carrier to body Bolt M 12 x 1.5 8.8 90 65
Carrier strut guard
to body Bolt M 10 8.8 47 34
Stabilizer and suspension Bolt M8 8.8 25 18
Guard Bolt M8 8.8 25 18
Stabilizer to carrier strut Bolt M8 8.8 25 18
Carrier strut,guard and
stabilizer to body Capscrew M 10 8.8 47 34
Carrier strut and guard toI
carrier Nut M 10 828 20
Control arm to body Bolt M 10 8.8 47 34
Ball joint to control arm M 45 x 8.8
Slotted nut 5250 181
Nut on stub axle Capscrew M7 10.9 15 11
M8 8
Ball joint to strut Uni stop nut 22 16
Brake disc to wheel hub Nut M8 8.8 23 17
Cover for brake disc Bolt M8 8.8 10 7
Caliper to stub axle Bolt
Capscrew M 12 x 1.5 8.8 70 51
Brake line Coupling M 10 x 1 12 9
Nut M 14 x 1.5 130 94Wheel to wheel hub
Printed in Germany
40-02 Technical Data

Front Wheel Suspension
REMOVING AND INSTALLING FRONT AXLE
Removing
1. Disconnect brake hose at brake line aft er
first depressingbrake pedal somewhatwith
pedal strut to prevent brake fluid from
escaping.
5. Placejack underneathcarrier.
6. Detach steering shaft at steering shaft
holder and lift joint off of steering shaft.
Dismantle steering shaft holders.
2. Unscrewstabilizeratsuspension.
7. Unscrewshockabsorberhexnuts.
3. Removeguard.
4. Unscrewmounting screwsat carrier and
control arms.
Removing and Installing FrontAxle 40-1
Printed in Germany

Front Wheel Suspension
8. Lowercompletefrontaxle assembly. Note
Do not turn the steering wheel quickly from
lock to lock whenthe car is raised, to
prevent tIle cup from popping off at the
steeritlg gear or tie rod (air compensation).
Installing
1. Raisecompletefrontaxle assembly.
2. Securetopof shockabsorberstobody.
3. Securebottom of front axle to body
(carrier and control arms).
4. Connectbrakehoses.
5. Bleedbrakes.
6. Torqueall mountingscra-lsto specifications.
40-2 Removing and Installing FrontAxle Printed in Germany

Front Wheel Suspension
T GalS
No.
Description Special Tool Remarks
Torquewrench1Commexcial item, up to 36 mkg
(261 ftlbs)
2Commercialitem Tie rod remover
Wrench P 280 b
3
Printed in Germany -II. 1976 Disassembling andAssembling FrontAxle 40-3

Front Wheel Suspension
Printed in Germany
40-4 Disassembling andAssembling FrontAxle

Front Wheel Suspension
Notes
No Designation Amt. Removing Installing
1CapscrewM 10 2Torque to
specifications
2Washer 2Replace, if
necessary
3Hexnut, self-
locking
2Torque to
specifications
4Washer 4
5Guard 1
6Strut 2
Hex hd screw 2Torque to
specifications
8Washer 2Replace, if
necessary
9Caliper 1
10 Spacer 1
111
Cap 1
12 Capscrew 1Torque to
specifications
13 Clampingnut 1
Tab disc14 1Must just barely turn
with screwdriver
15 Wheel hub 1Clean, check for wear'lfill hub with ca. 60 g
multi-purpose lubricant
16 Taperroller bearing 1Clean, check and
lubricate. If necessary.
replace.
17 Hex nut M 8 5Torque to
specifications.
Printed in Germany Dismantling and Assembling FrontAxle 40-5

Front Wheel Suspension
Notes
No. Designation Amt
IRemarks
Removing Installing
18 Washer 5Replace, if
necessary
19 Hex head screw 5
120 Brakedisc 1 Check for wear
and damage
121
Radial seal 1 Replace, if
necessary. Press
in until seal is
flush with hub.
Clean. checkfor
wearandlubricate.
Replace.if
necessary.
22 Taper roller
bearing
1
1Heat hub and
pressoff race Heat hub and
install race
123 Outerrace
1Heat hub and
pressoff race Heat hub and
install race
124 Outer race
Hex hd screw 3Torque to
specifications
125
Replace.if
necessary
26 Lockwasher 3
27 Guard 1
28 2Lubricate with MoS2°
Readjustheight
Controlscrew
2
129 I Adjusting lever
Replace,if
necessary
OWA gasket 2
30
Torque to specifications,
Replace, if necessary
131
Uni stopnut MS 1
Washer 1 32
Dismantling and Assembling FrontAxle
40-6 Printed in Germany

Notes
No. Description Amt Remarks
Removing Installing
33 Threaded pin 1Drive out Install with lubricant
Position it correctly.
Replace!
34 Hex nut 1Torque to
specifications
35 Lockplate 1 Replace, tab faces
up.
36 Supportdisc 1
37 Strut 1Check, replace if
necessary
38 Guard 1
39 Spacer Heat and install to
stop
1
40 Seal 1
41 Hex hd screw
M 10 3Torqueto
specifications
Lockwasher 2Replace if
necessary
42
Washer43 1
Guard44 1
45 Spacer 1
Check
46 Controlarm 1
Torsion bar 1
47 Check for damage,
replacing if necessary
Note mark for in-
stallation. Lubricate
48 1Replace
Cotter pin
Replace. if
necessary
Lockplate 1
49
40-7
Disassembling and Assembling Front Axle
Printed in Germany

40 Front Wheel Suspension
Notes
No Description Amt, Remarks
Installing
Removing
50 Nut 1Loosenwith
P 280 b Torque to
specifications.
Lubricate threads
51 Ball joint 1Check, replacing
if necessary
52 Hex hd screw
M 10 2Torque to
specifications
53 Washer 2Replace,if
necessary
54 Hedhd screw
M1O 2Torqueto
specifications
55 Washer 2Replace, if
necessary
56 Carrier 1Check for
damage
57 Adaptor 2
58 Capscrew 3Torqueto
specifications
59 Lockwasher 3Replace.if
necessary
60 Single-hole
pressureplate Mark for
reuse
1
Double-hole
pressureplate Mark for
reuse
61 1
62 Support with
rubberbearing 1Check, replacing if necessary
63 1
Spacer
II, 1976 -Printed in Germany
40-8 Disassembling andAssembling FrontAxle