Steering Gear
The steering gear is bolted at 4 points to the front axle carrier. The gear ratio is variable from 47.0 to 59.0 mm rack movement per steering wheel revolution. This keeps the number of total steering wheel revolutions as low as possible when turning to full lock. With larger dimensioning, the rack and pinion steering system is used in the E65. The thrust piece required for automatic play compensation is lengthened and equipped with a stronger spring. See Fig 1.
The thrust piece contains integral lubrication pockets where it contacts the rack for longevity and noise reduction. The gearing is pressed on the rack to increase resistance to stress. The rack is hollowed which saves weight (reduction of 280 g) and allows air equalization between the right and left bellows eliminating the external plastic tube. Threadless plug "quick couplings" are used at the supply (1) and return (2) connections on the steering gear. See Fig 2.
- Steering Gear
- Thrust Piece
- Variable Pitch Gear Tooth Rack
- Steering Shaft
To release the quick coupling, turn the cap to position 2. The connection is then released by pressing with the thumb while at the same time pulling the quick coupling. See Fig 3.