Wheel alignment measuring data
The following values apply at empty weight in accordance with German DIN 70020 standard car with full fuel tank, spare wheel and tools . Measuring surface on rear control arm pivot Toe-out on turns at 20' steering lock Can only be varied by renewing steering arms From wheel contact patch to measuring surface on lateral subframe Height adjustment settings apply to new cars. After cars have been driven for a period the height may be max. 10 mm less, in other words the downward tolerance can vary...
Removing and installing pressureoperated switches
1. Turn the rim and clamp onto mounting unit. Remove the deflector from the pressure-operated switch. 2. Remove pressure-operated switch with Special Tool 9274 9273. Hold the pressure-operated switch with Special Tool 9273 while undoing fastening nut. 3. Fit the correct pressure-operated switch marked with specified pressure 2.5 - or 3.0 bar as follows Apply pressure-operated switch with new seal. Apply a film of Vaseline to the seal before fitting. Center pressure-operated switch and tighten...
Note Grf
Use only brake fluid or brake cylinder paste as an aid to installation. Substances containing mineral oil will destroy the rubber elements In the brake system and cause brake failure. In the case of stepped brake master cylinders, there is a washer under the front sealing plug intermediate piston brake circuit . 4. Bleed the brake clutch with the filling and bleeding device. Check for leaks and for correct operation. 5.Remove cover and unscrew mounting nuts of brake booster. REMOVING AND...
Checking the ABS operation
If service operations not directly related to parts of the ABS have been carried out on the brake system, a simple functional check is sufficient. I.e. after starting the engine, the warning lamp in the instrument cluster must go off if the ABS system is o.k. Operations of this type include replacement of brake pads, brake hoses, brake discs, brake booster, tandem master cylinder, brake cables and components of the parking brake as well as brake pipes that are not screwed into the hydraulic...
Runout of removed
Runout of wheel hub max. 0 05 mm. 6. If the brake disc runout exceeds 0.1 mm, remove the brake disc and check runout of the wheel hub. Mark position of disc with regard to wheel hub. 3. Engage dial gauge holder, e.g. Ate Part No. 03.9314-5500.3 01, into brake caliper, determine center position and fit by turning the wing screw. If required, fit dial gauge holder with Ate conversion kit, Part No. 03.9314-5510.3 01 longer wing screw and bracket for dial gauge if required . Four-piston fixed...
All former steering gear versions are to be replaced with the current version
The elastic steering stop, 928.347.329.03, for left and right sides is replaces by a solid steering stop, 928.347.329.04, for improvement in quality. At the same time it was necessary to replace the dust cover, 928.347.191.02, with a new version dust cover having a supporting lip, Part No. 928.347.191.03. Only the new steering stop 928.347.329.04 and the new bellows 928.347.191.03 are supplied for steering gear 928.347.010.24. The bellows 928.347.191.03 and the steering stop 928.347.329.04 are...
dia left and right 23 mm
928.347.010.24 928.347.010.26 928.347.010.27 The steering gears with Part No. 928.347.010.22 former version and interim solution are no longer available. They should be replaced with the new current version. The steering gears of the new version 928.347.010.24 and 928.347.010.26 indicated in brackets have since been deleted as well status as of December, 1994 .
Installation
REMOVING AND INSTALLING SPEED SENSORS ON FRONT AND REAR AXLES 1. Take off front wheel. Remove intake hose on air cleaner. 2. Turn off ignition, take wire plug out of holder in engine compartment and disconnect. 4. Unclip wire on side member and in holders on steering knuckle. Loosen socket head screw and pull speed sensor out of steering knuckle. 3. Remove front exhaust shield to make procedures easier . Unclip wires on wheel housings and pull out with rubber grommet in direction of wheel. Also...
Important information on troubleshooting and ABS test program
After certain repairs to the ABS system refer to functional check on page 45 - 07 , a test program using an ABS tester must be run. The ABS test plan, Print No. WKD 493 720, is required for this test operation and for troubleshooting. Following repairs affecting the ABS system cf. page 45 - 07 , a functional test using the ABS 2-LED tester must be run. 2 55-pin ABS 2-LED adapter lead. Same lead as for ABS testing on the 911 Carrera 4. Manufacturer and supplier Bosch. For address and order no.,...
If the 9288 system tester is connected make quite sure that no speed range is
Not all system faults are identified by the RDK control unit as faults. This applies to the RDK control unit itself. If the fault display RDK SHUT DOWN appears and no fault is stored in the control unit, the following points must be checked or confirmed before the RDK control unit is replaced a. Is the control unit plug attached correctly and are the connection contacts between the plug and the control unit in good condition b. When the ignition is switched on, a voltage higher than 9 Volt must...
Important notes for alignment
The following must be observed during alignment 2. Height setting alteration in wheel load Corresponds to the specified value. The tolerance range may be used to reduce the difference in wheel load. Should be within the tolerance range for the specified vehicle height. Is lost if the vehicle or front axle have been raised. Is recovered after a longer journey or longer operating period. Exact value can be achieved by pulling the front axle downward in a precisely defined way. Description in the...
Quick test of RDK
Whenever a wheel or tire is changed, it is essential to perform a quick test of the tire pressure control system. If only one wheel was removed, the quick RDK test need only be performed at this wheel. A short test drive for a distance of at least 20 meters, at a road speed of between 5 and 40 kph and at the following tire pressures is sufficient 1. Tire pressure 0.5 bar below nominal value front 2.0 bar rear 2.5 bar 2.0 bar for 17 summer tires The relevant arrow s must flash on the instrument...
Rear axle Adjust camber
The camber is adjusted by means of an eccentric screw on the inner link bearing. Clamp the steering wheel in the central po- Adjust toe sition with steering wheel lock and adjust . .u .u The toe is adjusted by means of an eccentric
Procedure for optimizing the wheels
The complete procedure is subdivided into 4 working steps 2. Stationary balancing of the wheel eliminating static and dynamic imbalance with optimization of smooth running 3. Fitting the wheel to the vehicle 4. Electronic fine balancing static balancing of the wheel on the vehicle after stationary balancing if required - not usually necessary Further to 1 Fitting the tire to the rim - Clean the rim above all, remove residua rubber and dried-on tire paste from the bead seat and the hump. -...
Technical Data Rear Axle
Wheel suspension Independent wheel suspension with lower diagonal suspension links and upper wishbones, coil springs and interna dampers. double-action hydraulic dampers page 42 - 18 d 0 22.5 x 3.5 mm tubular stabilizers modified in course of model year 1981 standard up to end of MY '91 Club-Sport-Version standard as of MY '92 Light alloy casting suspension link bearing for lower control arm 86 models onward to body Lower suspension link to transverse member camber eccentric Lower suspension...
Workshop Manual
DR. ING. b.c. F. PORSCHE Aktiengesellschaft TECHNICAL DATA Front Axle Suspension until end of model year 79 80 models onward 86 models onward control arm with coil spring and internal Double-action hydraulic dampers See page 40 - 51 dia. 28 mm x 4 tubular stabilizer with modified knuckle Spring strut and stabilizer linkage to lower control arm Stabi1izer clamp to longitudinal member Upper and lower control arms to steering knuckle Rubber bushing of piston rod of spring strut Ball joint,...