Arizona republican., 1918-10-27

spring must be kept fit to perform its function or much power will be wasted through slipping.
 The clutch shaft usually rests upon two bearings, generally of the ball type, one located in the center of the fiyWheel and the other placed to take up thrust that results when the clutch is released. Wear in these bearings IS a serious matter Since on their proper action rests the functioning of the clutch, any suggestion to wear should be at once taken up.
 In many cone clutches there is a tendency to grab" that is, to engage Jerkily, instead of smoothly as is in- tended. Many makers fit a series of springs either in the flywheel or under the leather facing of the cone, so that engagement takes place more gradu- ally. In cases where grabbing is hab ltual removing the leather or fabric facing, soaking it over night in heats foot oil and then running it through 1 a clothes wringer will often serve to soften the leather and make gradual engagement possible.
 On the other hand, when the facing of the cone clutch becomes too heavily oil soaked, it tends to slip and the re- l suit is a heavy loss of power. The cure 1 | light layer of fuller's earth over the surface, and this serves to soak up the i excess oil. Incidentally, when treat l ing the facing of the clutch the fly wheel surface should also be cleaned off.
 1 fabrication the clutch is one of the most important things to be re- l membered. The bearings at the throw l out collar and the thrust bearing on 1 the shaft must be given plenty of proper lubricant. Generally oil or | grease cups are provided for this pur- pose, and these must be filled or turned down at regular intervals; one neglect may cause serious trouble.
 All the suggestions made for caring for cone clutches apply equally to disc and plate clutches, except of course, | those for caring for the leather facing. The springs must be kept up to the mark, the bearings must be regularly fabricated. In the case of disc clutches running in oil there will sometimes be trouble in finding just the right lubri- cant. Too heavy an oil will cause spin
 ming. If the oil disc clutch is permitted
 to run dry the plates may burn up. If
 the oil used is too thin. it tends to pro-
 duce grabbing. The owner will have to experiment with a mixture of oil and kerosene until he gets the right pro- portions, and even then he will find that in winter he will have to make the mixture thinner than in summer Some of the oil disc clutches have cork inserts in the discs. When these wear
 down so that renewal is necessary this is job for the service station, as the cork pieces must be pressed into place by means of a special machine.
 In most disc clutches an adjustment
 is provided for compensa ting for wear
 of the discs. By adjusting the spring
 more pressure is added, making up for
 wear in the the plates. In the plate
 clutch a simplet set screw adjustment
 usually is used for this purpose. In the
 dry disc type slipning may usually be
 cured by flushing the part out with
 kerosene to remove tho deposits of oily
 matter and gum that are causing the
 trouble. However, a great deal of all
 clutch trouble as relates to slippin 2
 the commonest i'll of all. lis the fault oi
 the driver. who keeps his foot press
 ing just slightly on the clutch pedal
 but enough to cause slipping. This
 tends to wear the facing or the discs
 as the case may be. so that the effects
 are cumulative. Therefore. we may
 paraphrase the familiar saving tC
 make it watch your foot