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Porsche 912E 76, Service Information

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Porsche 912E 76 Service Information Download Page 33

46 

BRAKES 

Hydraulic 

s

ystem/Brake  failure warning  device/ 

Hand  brak

e 

warning 

light 

As 

in 

the 911,  the  master  brake cyl inder  is  fitted with a brake fai lure warn ing  device 

. 

In the event 

of failure 

in 

one  of the brake circuits a warning  lamp  "BRAKE"  is  illuminated 

on 

the dash-board. 

The 

"BRAKE" 

warning  light 

also 

serves  as  a hand  brake warning  light. 

The 

h

and 

brake 

warning  lamp which was  previously  located  in  the combination  instrument  is  no 

longer  used. 

31 

Summary of Contents for 912E 76

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Page 3: ...Bore 91 mm Horse power developed at Torque developed at 86 hp 64 4900 rpm 98 Ibft 133 4000 rpm is equipped with a 2 Itr 4 cylinder engine similar to that in the Type This motor has been fitted with t...

Page 4: ...dified transmission ratio and a newly designed clutch operation mechanism a like the 911 a dual circuit brake system disks brakes without inner ventilation bodywork similar to the 911 but with permane...

Page 5: ...tr The following is new The engine mount It consists of a swung steel bar which is secured to the motor in the same way as in the 914 The mounting points on the chassis were moved outwards to the whee...

Page 6: ...fan belt pulley is fitted to drive the secondary air pump It IS secured to the front of the air intake housing by means of a three armed block and is driven by means of a shaft from the center of the...

Page 7: ...e fuel pump is mounted on the front ax le aux il iary mount The fuel filter is the same as in the CIS injection It is secured to the left hand wheel well in the engine compartment 1 1 Fuel tank 2 Fuel...

Page 8: ...liary Air Regulator 8 Throttle Switch 9 Air Filter 10 Temperature Sensor II 11 Battery 12 Ignition Switch A Intake air Sensor B Throttle valve C Air Sensor Flap o Control Unit Principles of Operation...

Page 9: ...oltage The injector which is activated by the control unit injects an exact amount of fuel appropriate to the volume of intake air The damping vane is designed to minimize sensor flap hunting The func...

Page 10: ...2 within the control unit These square wave impulses are then presented to a gate 3 which provides a single pu Ise output for each sequence of four input pu Ises wh ich are the resu It of two revoluti...

Page 11: ...or II This sensor is located in the cylinder head It provides the control unit with information concerning engine temperature and thus about the starting and warm up enrichment Problem condition the m...

Page 12: ...o l unit is composed of printed circuits and integrated circuit components It is fitted with approx imately 80 components The printed circu it board is secured to the control unit and pressed into the...

Page 13: ...line independent of the pressure in the vacuum line The spri ng chamber of the pressu re regu lator is connected to the intake air distributor via a hose Operation By using this configuration the pres...

Page 14: ...n electrical heating coil Operation If the engine is cold the auxiliary air slide valve is fully open When the ignition switch is turned on the heating coil starts to warm up With increase in temperat...

Page 15: ...rnig trouble free operation of engines equipped with AFC injection All ai r lines and hoses and the intake ai r sensor must be absolutely air tight The sensor flap must be able to move freely over its...

Page 16: ...Test Values 4 Intake air Sensor pin 6 9 200 400 pin 7 8 120 200 pin 36 39 0 Air sensor flap 00 pin 27 6 8 11 k at 100C 50 F 2 3 k at 20 C 68 F 2 k at 50 C 122 F 3 Throttl e switch pin 3 18 throttle o...

Page 17: ...aust The purpose of the EGR is to reduce the emission of nitric oxide NOx Secondary Air Injection The air required for after burning the exhaust gases is supplied to the exhaust manifold by means of a...

Page 18: ...ulating material 6 6 4 1 3 Operation The hot exhaust gas which is mixed with the secondary air enters the reactor combustion chamber 3 via the exhaust pipe 4 The gas leaves the combustion chamber via...

Page 19: ...tro l D Operation In the part load range the cont rol va lve diaphragm is lifted by the vacuum in the control line T he va lve opens and fresh air is mixed wi t h a fraction of the exhaust gas Th is c...

Page 20: ...l is now located on the fan belt pully arrow An angle bracket which is secured to the air intake housing serves as reference point Technical Specifications Ignition System Firing order 1 4 3 2 Dwell a...

Page 21: ...cold Intake Exhaust Engine weight kg lbs Emission system Fuel supply system Fuel supp ly Fue l octane coun t requirements Electrical equipment Battery Battery optional Al ternator 4 mm in 94 3 70 mm...

Page 22: ...923 02 is a development of the transmission type 915 44 5 speed trans mission for the 911 and differs from it in the following points 1 Clutch and operation 2 Main shaft sp lines 3 Ring gear and pini...

Page 23: ...clutch is a single dry plate clutch of pressed design The clutch disk has 24 splines unlike the 911 which has SAE arrangement 20 spli nes Description of the pressure plate M 215 K Sph Description of t...

Page 24: ...odel the lever was moved in the direction of the transmission housing The clutch cable is 2080 1 5 mm long and has a diameter of 3 0 mm The cable housing is secured to one of the mounts on the t ransm...

Page 25: ...imensions are as follows From the mating surface on the transmission housing to the lever is 71 mm Without altering the 71 mm dimension measure the distance from the transmission housing i n the area...

Page 26: ...ntenance free and must not be dismantled The guide sleeve for the throw out bearing is bolted to the transmission housing The main shaft oil seal is held within the guide sleeve for ease of replacemen...

Page 27: ...pair for 4th and 5th gear As previously mentioned the transmission ratio for the 4th and 5th gear in the transmission unit 923 02 is different from that in the 915 44 transmission unit The ratio diffe...

Page 28: ...923 02 K T 7 31 i 4 4285 915 44 K T 8 31 i 3 8750 Speedometer Drive The Type 912 E vehicles are equipped with an electronically controlled speedometer Impulses from a magnetic disk which is mounted o...

Page 29: ...ferential Transmission oils Transmission number Range Model year 1976 Sample serial No 7 digits Type of aggregate Transmission type 5 o 5 for a 4 cyl motor 0 5 gears 923 27 912 E Single dry disk clutc...

Page 30: ...n A arms and struts one torsion bar for each wheel Rack and pinion steering with safety column Safety steering wheel with padd ng stabilizer bar 16 mm dia Rear axle independently suspended wheels on A...

Page 31: ...5 mm 3 90 in Maximum difference from left to right 5mm 0 2 in Total to in pressed 15 kp Difference angle at a 20 turning angle 0 to 30 Camber with wheels straight ahead 0 30 10 Maximum camber differen...

Page 32: ...2 J x 15 steel Tyres front and rear 165 HR 15 Option Wheel rims front and rear 5 1 2 J x 14 LM rims forged Tyres front and rear 185 HR 14 Spare wheel Inflatable tyre on a steel rim 5 1 2 J x 15 with a...

Page 33: ...fitted with a brake fai lure warn ing device In the event of failure in one of the brake circuits a warning lamp BRAKE is illuminated on the dash board The BRAKE warning light also serves as a hand br...

Page 34: ...both front and rear axles Refer to technical specifications for dimensions and minimum brake pad thicknesses Commencing with Mod 76 a type brake caliper is installed on the front axle on all vehicles...

Page 35: ...pring plate adjustment inclination for standard models and for models with air conditioning Independently suspended wheels on A arms and struts one torsion bar for each wheel 18 8 mm 0 74 in 16 mm 0 6...

Page 36: ...d brake drum dia Wear limit dia Brake shoe width Effective brake area per wheel Wear limit for brake lining Hydraulic dual circuit disk brakes with brake failure warn ing light 19 05 mm 0 75 in 18113...

Page 37: ...1797 Maximum load capacity 240 529 Maximum roof load 35 77 including luggage carrier Coupe only Fuel and Lubricants Engine The correct oil level Types of oil according is determined by the to A IP cla...

Page 38: ...km h mph 178 110 6 Acceleration 0 100 km h s 13 5 km for standing start s 34 0 0 IN empty weight plus 1 2 load Hill climbing ability 5 speed transmission 1st gear 2nd gear 3rd gear 4th gear 5th gear 5...

Page 39: ...E is identical to that of the 911 Models The fol lowing are new on the 912 E Model identification on rear lid Rear side windows permanent installed Nylon velour carpet Seats Center stripe in Scotch p...

Page 40: ...de windows are permanently installed The former side windows are available as an option The single stage heated rear window is standardiequipment The 912 E interior upholstery consists of a nylon velo...

Page 41: ...nd one in the left door can be installed The speakerperforation on the dash board was removed Door locking push button The safety push button for locking the door has been changed from 8 mm to 6 5 mm...

Page 42: ...2 for active carbon contai ner 3 for the deceleration valve 4 for the heating blower motor Motor mountlR ight hand wheel well The motor mount left and right is welded to the main body members arrow Lo...

Page 43: ...condenser which is secured to the engine lid Located on the receiver dryer is a thermo switch electrical switch which disconnects the compressor clutch and the air conditioning unit when the freon tem...

Page 44: ...ReqUired at 1 000 miles ReqUired every 15 000 miles Door hinges Lubricate Door weatherstrips Remove rubber residue from contacting areas Maintain and coat with talcum powder or other suitable rubber...

Page 45: ...weck Werner Hahn Hans Obinger Dieter Printed by Beck Co Stuttgart 40 Illustrations descriptions and drawings are provided solely to clarify the text We accept no responsibility for completeness or com...

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