Cylinder Head Bolts

r> order to remove the cylinder head, without removing the engine, the studs in the engine block were replaced with . Hexagon Bolts. Part No. 928.101.231.00, M12X 180 928.101.233.00, M12X 130 1 Tighten all bolts in proper order to 20Nm (14 ft. lbs.), threads lubricated with tight oil. 2 Tighten all bolts in proper order an additional 90 degree turn. 3 Tighten a bolts in proper order an additona 90 degree turn. (n production as of Aprii 22, 1986, Engine No. 81G00705 81G06827

Itlillllii

PCNA Technical Bulletins are intended for use by professional technicians, not a Do-it-yourselfer. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Special tools may be required to perform certain operations identified in these bulletins. Use of tools and procedures other than those recommended in these bulletins may be detrimental to the safe operation of your vehicle....

Technical Bulletin

To improve sealing of the cylinder head cover and the eliminate the possibility of the spacer stud 6 becoming loose or breaking off during removal, the stud was deleted. The gaskets for cylinder head cover 1 , spark plug holes 2 and the sealing washer 4 are improved. Torque for spacer bolts 3 10Nm 7 ft. lbs. As of production date Jan. 9, 1986 The new gaskets can be installed on early four valve engines. The new bolts and washers cannot be replaced separate. The complete cylinder head has to be...

Info

5 Bolt M10X57 5 Bolt M10X50 The end cap, pressed on the CV joint can be replaced separately and is available under Part 928.332.267.01. Parts of old and new version are not interchangeable IMPORTANT INFORMATION FOR REPAIRS The old parts, drive shaft, joint flange, and gasket are stil available for replacements. When replacing a complete 1985 model transmission, check for the correct CV joint flanges, since some early 1985 Model year, new transmissions, were equipped with the old version...

Crankshaft Main Bearings

491721 Oil

The diameter of lateral bearing surfaces at bearing No. 3 arrows was changed from 90 mm to 97 mm. The following changes to the No. 3 thrust bearing, crankcase and crankshaft were made beginning with engine number 81 E 00148 manual trans. 81 E 05344 automatic trans. The diameter of the axial bearing surfaces on thrust bearing 3, Pari No. 928.101.141.00, was changed from 90 mm to 97 mm. The diameter of the cut on bearing seat No. 3 arrow in the upper and lower sections of- the crankcase was...

C

To reduce creeping when the vehicle is standing still at idle speed, and to reduce fuel consumption, the transmission valve body has been changed. From Production Date October 15, 1986 Transmission Number 16 H 00564 With shift lever in position 3 or D and a throttle valve opening of 0 degree to 27 degrees, second gear Is engaged. When accelerating from a stop under these conditions the vehicle starts out in second gear. With shift lever In position 2 the transmission still starts in first and...

Technical Bulletins

PORSCHE CARS NORTH AMERICA SERVICE INFORMATION Maintenance Requirements M.Y. 1989 interpretation of Fault Codes with Tester 9268 Use of Tester 9268 on 1989 Model Year Cars Replacing Oil Pressure Reducing Valve Troubleshooting Engine Cooling Flap and Fan System Mechanical Tensioner Material Changed Part Number on Poly Rib Belt invalid Diagnosing Condition of Toothed Drive Belts Starter Solenoid Troubleshooting and Replacing Group 2 continued 8804 Tester 9268 Cable Connection 944S, 928 S4 93 8805...

Technical

PORSCHE CARS NORTH AMERICA SERVICE INFORMATION Maintenance Requirements M,Y. 1987-1988 . Cam Beti Tensioner Nut Torque Ail Models Through Short Block installation Modifications Tightening Procedure For Cylinder Heads Installing New Type Oil Pressure Relief Vaive When New Ambient Air Valvs To Eliminate Rattling Noises Oii Level Warning System Stages Of Installation in Right Engine Mount Replacing With Turbo Type Engine Main Bearing Torque Changed For Pre-1987 Radiator Thermoswitch Mounting...

Ressure Damper And Regulator

A - vacuum hose connection - 49 states b - vacuum hose connection - California A - from fuel tank B - return to fuel tank C - to oil fiiter housing throttle housing D - from charcoal canister E - to automatic transmission F - to EZF control unit a - vacuum hose connection - 49 states b - vacuum hose connection - California A - from fuel tank B - return to fuel tank C - to oil filter housing throttle housing D - from charcoal canister E - to automatic transmission F - to EZF control unit Below...