From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Instructions for steering adjustments, including cam location, bearing tightness, and mesh with the roller.
| Identifier | ExFiles\Box 108\2\ scan0138 | |
| Date | 2nd September 1938 | |
| -3- Steering Adjustments Cont'd.{John DeLooze - Company Secretary} (2) Location of cam. With Rocker shaft removed, assemble cam with 0.050 washer at D Fig. Re-assemble rockershaft and bring cam into mesh with roller, by rotating eccentric sleeve E.{Mr Elliott - Chief Engineer} The cam should mesh with the roller without backlash in some position between the limits of its travel. As it is moved away from this position backlash should develop steadily. It is necessary to adjust the endwise position of the cam by the washer D so that the position of no backlash occurs halfway between the two extreme locks. (3) Tightness on cam bearings. When the correct thickness of washer D has been determined, washer F should be selected to produce sufficient tightness on bearings G and H Fig to produce 3/4 - 1 1/4 lbs. drag at the rim of the steering wheel. This poundage should, of course, be checked without the rocker shaft in position. (4) Mesh of cam with roller. The mesh of the cam with the roller should be adjusted by eccentric sleeve E to produce a maximum tightness of the complete gear of 1 - 1 1/2 lbs. at the steering wheel rim in the central position, where the "tight spot" between the cam and roller has been made to occur by adjustment (2) above. Moving the protruding tab of the sleeve E towards the O.S. or in an anti-clockwise direction when viewed from the steering wheel, moves the cam into mesh. When setting the position of the sleeve the four nuts holding the column to the box should be slacked off, and tightened up before checking the poundage. | ||