
388 LIGHT AND HEAVY VEHICLE TECHNOLOGY
or weekly . The grease used is a multipurpose lithium-
based compound whose characteristics combine water
resistance with extreme pressure- and corrosion-
inhibiting properties. If the vehicle is operated under
conditions in which corrosive elements such as salt are
encountered, then a suitable calcium-lead-based grease
should be used.
23.4 MANUAL STEERING GEARS
General requirements
At the heart of all motor vehicle steering systems is, of
course, the steering gear
itself.
This comprises some
form of reduction gearing to provide the driver with a
mechanical advantage in respect of steering the road
wheels ...