Selector Forks

The selector forks for 2nd and 3rd gear, which are used for 4th and 5th gears too by reversing installation, are made of light alloy metal. The light alloy metal is an aluminum silicium alloy (similar to the engine block). The contact surfaces of the selector forks, which are subjected to high loads when changing gears, and the operating sfeeves are almost wearproof due to the silicium crystals embedded in the aluminum.

Engine Suction Oil Pump Oil Drain Plug

The 928 cars have an improved suction system for the oil pump. The suction tube has a temperature-proof rubber funnel which guarantees perfect suction of oil out of the oil sump. The back of the funnel is designed to trap dirt and foreign particles. The tightening torque for the oil drain plug has been changed from 40 Nm 30 ft. lbs to 60 Nm 44 ft. lbs to prevent leaks. Two flexible plastic tubes are located between car's front end and the air cleaner to guide the cold air stream from the car's...

Power Flow Transaxle System Rear Axle Cross Member

The new, reinforced manual transmission has a rear transmission cover which is no longer mounted on the transmission case with studs and nuts, but with normal hexagon head bolts. Modifications were necessary on the input shaft because of moving the transmission forward. The new input shaft is longer see figure and can only be used in the new transmission G 28.05.

Loose Gear Bearings

The loose gears of transmission G 28.05 run on needle bearings. Up to now the needle bearings were one-piece cage bearings A . A needle bearing with split metal cages B is in the new transmission. The split cages offer the following advantages over the former one-piece needle bearings. When a gear is engaged the needle bearing 8 of the corresponding loose gear will remain stationary in relation to the gear and the bearing inner race on the shaft, because the operating sleeve 5 locks loose gear...