Technical Bulletins

NOVEMBER 1984 - DECEMBER 1985

PORSCHE CARS NORTH AMERICA

SERVICE INFORMATION

TABLE OF CONTENTS

Number Description Model Page Group 0

8502 Changes on Model 1985 911,928$, 944 1

8503 Maintenance Requirements - M.Y. 1985 911,928S, 944 5

8504 Front Springs - Blocked For Shipping 944 Turbo 13

8505 Maintenance Requirements - M.Y. 1986 911,911 Turbo, 15

928,944,944 Turbo

Group 1

8401 Oil Pressure Relief Valve 944 29

8402 Engine Performance After Cold Start 944 31

8404 Additional TDC Mark On Flywheel 944 33

8405 Tune-up Specifications for Model Year 1985 928S.944, 35

911 Carrera

8406 Oil Cooler in Right Front Fender 911,911 Turbo 37

8407 Spur Belt Cover - Modification 944 43

8408 Oil Cooler Housing 944 45 6409 Spur Belt For Balance Shafts 944 47 8410 Crankshaft Main Bearings 928S 49

8501 Modification to Correct Slow Build Up Of Oil Pressure 944 55

8502 Camshaft Drive Belt 944 57

8503 Connecting Rods and Con-Röd Nuts 944 61

8504 Rear Drive Belt Cover 944 63

8505 Crankshaft Main Bearings 944 65

8506 Torquing Of The Crankshaft Pulley 911 67

8507 Hydraulic Engine Mounts 1 944 69

8508 Camshaft Drive Belt 944,944 Turbo 71

8509 Poly-Rib Belt For Alternator & A/C Compressor 944 73

8510 Oil Pump 911,911 Turbo 75

8511 Cylinder Head Torque Specifications 928S 77

8512 Basic Emission Equipment and Tune Up Specifications 911 79

8513 Basic Emission Equipment and Tune Up Specifications 911 Turbo 87

8514 Basic Emission Equipment and Tune Up Specifications 912 91

8515 Basic Emission Equipment and Tune Up Specifications 914/4 93

8516 Basic Emission Equipment and Tune Up Specifications 914/6 97

8517 Basic Emission Equipment and Tune Up Specifications 924 99

8518 Basic Emission Equipment and Tune Up Specifications 924 Turbo 103

8519 Basic Emission Equipment and Tune Up Specifications 928 105

8520 Basic Emission Equipment and Tune Up Specifications 944 109

8521 Camshaft Timing-32 Valve Engine 928S 111

8522 Camshaft Drive Belt Adjustments 928 113

8523 Tune-Up Specifications for M.Y. 1986 944,944 Turbo 115

8524 Tune-Up Specifications for M.Y. 1986 911 Carrera, 117

911 Turbo, 928S

8525 Camshaft Drive Beit 944,944 Turbo 119

8526 Radiator Cooling Fans ■ 944 123

8527 Basic Emission Equipment and Tune Up Specifications 944 Turbo 125

8528 Coolant Expansion Tank Cap 944,944T 127

8530 Torquing the Cylinder Head 944,944 Turbo 129

8531 Camshaft Seal 944,944 Turbo 131

Number

Description

Model

Page

Group 2

8501

Spark Plug Connector

911 Carrera

133

8502

Checking The intake Systems For Leaks

911,911 Turbo,

135

924, 924 Turbo,

928

8503

Fuel Injectors For L-Jetronic Vehicles

911,928,944

143

8504

Pressure Damper and Regulator

928S

145

8505

Engine Run-On (Dieselirtg)

944

151

8506

Spark Plugs

924, 924 Turbo,

153

944, 944 Turbo

8507

Spark Plugs

928

155

8508

Spark Plugs

912 All, 911 All,

157

911 Turbo

8509

Ignition Firing Order/Distributor Cap

928S

159

8510

Cleaning of Fuel Injectors

911, 928S, 944,

161

944 Turbo

Group 3

8401

Rna\ Drive Cover

944

163

8402

Transmission Mainshaft Nut

911

165

8403

Clutch Chatter

911SC, Carrera, Turbo

167

8404

Selector Lever Position Indicator - Automatic

928S

169

8405

Limited Slip Differential

944

171

8501

Mainshaft Seal And Guide Tube

911

173

8502

Dimensions X, R And Torque Specs. For Pinion Nut

928

177

8503

Automatic Transmission Fluid

928

179

8504

Automatic Transmission

928

181

8505

Fifth Gear-Linkage Adjustment

911 Carrera

183

8506

Synchronization for First, Second and Third Gears

928S

185

8507

Four Speed Automatic Transmission

928S

187

8508

Gear Shift Lever Adjustment

911 Carrera

189

8509

Shortened Shift Lever Travel with M-241

911 Carrera

191

Group 4

8401

Winter Tire - Wheel Rim Summary

924, 924T, 944

193

8402

Winter Tire - Wheel Rim Summary

911,911 Carrera,

197

911SC, 911 Turbo, 912

8403

Winter Tire - Wheel Rim Summary

928, 928S

201

8501

Modified Steering Stop And Dust Cover

928S

203

8502

Hydraulic Noise in The Power Steering System

944

205

8503

Space Saver Spare Wheei

944

207

8504

Cleaning Of Light Alloy Wheels

ALL

209

6505

Summer Tires - Wheel Rim Summary

924, 924T, 944

211

8506

Summer Tire And Wheel Rim Summary

912,911,

217

All Carrera, 911 Turbo

8507

Summer Tire And Wheel Rim Summary

928, 928S

223

8508

Goodyear Summer Tires 205/55 VR16 And 225/50 VR16

911, 928S, 944

227

8509

Modified Rear Axle Shafts

928S

229

8510

Shock Absorbers

911 Carrera, 928S, 944

dumber Description

Model

Page roup 5

"roup 6

3531

8513

roup 8

Binding/Seized Door Locks Rear Window

Tonneau Cover

Electric Lifting Roof

Sekuriflex Windshield

Removal And Installation Of Windshield

Windshield Trim On 85/2 Models

Freon Charge - Increased with M 570 A/C Refrigerant Capacity

All 924, 944, 944 Turbo

911 Cabriolet 944 928S 944-85/2 944, 944 Turbo

928 944

233 235

237 241 263 265 271

273 275

roup 9

5C1 02

8507 508 569 3510

Windshield Antenna - Model Year 1985 Wiring Diagram For Sunroof Micro-Switch Blaupunkt Radio Speakers Relay For Seat Belt And Rear Window Removal Of Fuses During Transportation Radio Interference Radio Interference Radio Interference

Removal Of Fuses And Electrical Connection During Transportation Removal Of Fuse And Electrical Connection During Transportation

911.928S, 944 277

944 279

944 281

944 283

944 285

944 287

911 Carrera 291

928S 295

944,944 Turbo 299

928S 301

Model

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