Collapsible Spare Tire

The collapsible spare tire is located underneath the luggage compartment. It is covered by a lid with quick release screws. The battery is located underneath the collapsible spare tire. The battery is accessible after taking the spare tire out and removing the lid from the battery box. The glove compartment is illuminated and cooled by the air conditioning system. An additional storage shel f is located under the giove compartment. There are two illuminated ashtrays, one in front of the...

Bypass Crankcase Vent Porsche 928

Make sure that gasket is positioned correctly oil supply bore for camshafts (arrow). The camshaft housing must be completely assembled before installation. It is located on the cylinder heads with 2 dowel pins and mounted with Allen head bolts. The upper row of boits with spring washers Is accessible through assembly holes In the camshaft housing, which are sealed with plugs Turn both camshafts until the notches on the sprockets align with the marks on the camshaft housings. Install vibration...

Electrical System Windows Outside Mirror Operation

The control switches for the door windows are located on the center console near the gearshift lever. The outside rear view mirror is adjusted by a control switch on the door trim. 9 Mirror adjustment switch 10 Outside mirror Current track on central fuse relay board 1 Rear window defogger switch 2 Rear window defogger relay 3 Rear window defogger 4-Plug D3 Plug connection on central fuse relay board Current track on central fuse relay board

Separate Wiring Diagrams

Several systems and their connections are shown on separate wiring diagrams. If not entered on the wiring diagram, the connections have a letter number combination, which designates the plug on the central fuse relay board. e. g. The circuit for the control pressure regulator. You will find the control pressure regulator in coordinate square F 3. The + terminal goes to the 14-pin engine plug terminal 7 in coordinate F 4 and from there to Q 1. Now use the wiring diagram for the central fuse...

Adjusting Parking Brake

After releasing the parking brake lever, loosen the parking brake cable at the clamp until all tension is removed. Insert a screwdriver through the opening on the brake drum and tighten the adjuster until the brake disc can no longer be turned (disc brake pads pushed back . Now loosen the adjuster enough (approx. 4 teeth), that the brake disc can turn freely and the brake shoes do not scrape on the drum. With the parking brake level released, adjust the parking brake cable at the clamp until...

Floating Caliper

The floating caliper has only one piston. When the brakes are applied, the piston will press the inner brake pad against the brake disc. At the same time the counterpressure on the cylinder will pull the floating frame with the outer brake pad against the brake disc. The brake is released by the tension of the piston seaimg ring. The curved guide IR> prevents the floating frame from jamming. 3 Brake pads connected to holder The sensor consists of a warning segment with a permanently connected...

Stop

The stop of the Porsche Synchronization serves as the last link in a chain of locking parts by increasing the force on the locking band. The direction and amount of force can be influenced by the shape of the contact surfaces. To be able to exactly adapt the shifting forces and the effectiveness of the synchronization to the separate gears, three different stops are installed in the transmission of the Porsche 92 . For the single locking band with two parallel stop surfaces (black arrows) on...

Lock

Located in the slot of the synchronizer ring this locking part provides additional force on the synchronizer ring during gear engagement. This locking effect can be increased or reduced depending on the design angle on the contact surfaces. Two different locking bands are employed for the 928 transmission. 1. A one piece locking band (F1 and F2) for the first and second gear. 2. Conventional two piece locking bands (F3), used for 3rd, 4th and 5th gears. The single piece locking band was...

Cylinder Heads

The aluminium cylinder heads have 2 dowel pins each for location and 10 studs for mounting on the crankcase. The in line valves are operated by a single overhead camshaft per cylinder head via bucket iype hydraulic valve lifters. 38 mm dia. at intake manifold flange 37 mm dia at insert 32.5 mm dia. at insert 34 mm dia. at exhaust flange Left and right cylinder head gaskets are different. When installing make sure that TOP OBEN faces up and the arrow faces in driving direction. Cylinder head...

Porsche Synchronization Components A

The hub (A) connects the sleeve and pinion shaft. The shift sleeve (B) can move in an axial direction. The shift sleeve engages the 39 teeth of the hub with a loose fit. The champhered side (arrow) is used to hold the gear in the engaged position. The flat surfaces of the hub are machined the synchronizer ring and locking parts are held in place by these surfaces. The shift sleeve (B) of the Porsche synchronization system is the immediate friction part for the synchronizer ring. The teeth of...

Ignition System

The Porsche 928 models are equipped with breakerless transistor ignition. The control unit is located on the right front of the engine compartment. The ignition coil with both resistors is mounted on the left front of the engine compartment. There are timing marks at 5 intervals on the vibration damper. The TDC mark and the 31 BTDC ignition timing mark are colored to facilitate identification. The control unit receives current when the ignition 2 is turned on. When starting the engine, starter...

Instrument cluster

Cluster Relay

4 Left combination nstrument 5 - Turn signal indicator light 9 High beam indicator light 10 Right combination instrument 11 Rear window defogger switch 12 Rear window wiper switch 14 Instrument light rheostat 16 Turn signal low beam and overnight parking light switch 16 Steering wheel cluster height adjusting 19 Intermittent wiper interval switch 20 Intensive cleaning fluid switch 3 - Warning lights and reset button for central

Electrical System Tempostat Cruise Control

H Plug connection on central fuse relay board WA9 Automatic warning term. 9 black Current track on central fuse relay board The tempostat control unit is located on the center tunnel underneath the air distribution box. It is accessible after the panel on the right side of the center console is removed. The servo motor is mounted underneath a cover in the left front fender well. A bowden cable is routed from the servo motor to the throttle valve lever.

Info

19 Piston in slave cylinder The clutch and service brakes are operated by suspended pedals, which are mounted on a common shaft. By mounting plates on the pedals, the distance to the pedals can be reduced by 15 to 30 mm. The clutch pedal 1 rides on the shaft with two needle bearings to keep the operating force as low as possible. An over-center spring reduces pedal effort from approx. 21 kp to 14 kp. In the released position, the spring's force will be slightly in the direction of the pedal...

Transmission Electronic Speedometer Sending Unit

Speed related pulses are used to indicate the road speed and the distance travelled. A magnet carrier 7 with 8 permanent magnets 6 is located on the differential 14 . A sending unit 3 with a reed switch 4 is inserted in the rear transmission case cover 5 . Each magnet lt 6 passing the sending unit will close the reed switch 4 with its magnetic field. This magnetic field is not weakened by the aluminum transmission case or the plastic housing of the sending unit. As the differential 14 turns,...

Synchronizer ring

The synchronizer ring is the main part of the Porsche synchronization. The ring is slotted and has a slightly oval shape when relaxed. This oval shape approx. 1 mm provides an exact fit to the shift sleeve during synchronization. The inside surface with annular grooves is matched with the locking parts. The stressed outside surface has a molybdenum coat, which is only approximately 0.1 5 mm thick and very wear resistant. The frictional pairing of hardened steel against molybdenum assures...

Top View of Transmission without Cover

The shift forks for the 928 are locked onto the shift rods with two pins and are not adjustable. The shift fork for 1st and reverse is one piece and operates both the 1st gear shift sleeve and the reverse idler gear. Depending on the rotary motion of the main shift rod, one of the ends of the shift finger engages a notch in the 2nd - 3rd shift rod, the 4th - 5th shift rod or the 1st - reverse shift fork. To ensure that two gears cannot be engaged at the same time, there are interlocks and...

The new sports car from Porsche

928 Porsche Ignition System Diagram

The 4,5 liter, all light alloy V-eight engine develops 230 HP, It is front-mounted and connected to the rear-mounted transmission drive unit with a transaxle tube. This system is also used on the Porsche 924 and results in a 50 50 weight distribution with excellent traction for the rear drive wheels. The smooth-running, high torque engine provides OUTSTANDING performance from 0 to 100 km b 62.1 mph in 7.5 seconds and a top speed of 230 km h 143 mph . General Crankcase Cylinder Heads Cam...