The Coconino sun., 1919-09-05
: THINGS TO WORRY ABOUT
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 The front wheel spindlss upon which the wheels are mounted turn on the kingbolt or pin. There are bronze pin bushings to take the wear, but if fabrication fails the bolt often freezes" in the bushings, and then the bolt turns around, causing wear where there is no renewing pushing to take care of it. In cases of this sort the kingbolt should be removed first by removing the castellated nut at the bottom. After cleaning the bolt and the part into which it fits the whole should be well oiled and then replaced. The nut should then be snugly frightened.
 The continued action of the impel. Ter of centrifugal water pump or of the gears of gear pump frequently causes wear in the pump. In case a considerable space develops between the impeller and the pump casing the power of the pump is largely reduced. The only remedy for this condition is to install new parts in place of the worn ones.
 For the benefit of hundreds of thou sands of new car owners which this season of the year produces, let us say again: Oil is the greatest enemy of India rubber. Mineral oils are not as bad as animal oils or fats, but keep the tires away from all of them. Don't let, pools of oil gather on the garage floor, and anyway keep the tires out of oil if you do allow it to gather.
 = Irregular missing is caused by a dirty sparkplug, improperly adjusted or sticking coil trembler burned of, or pitted or dirty or loose in the spring, poor commutator contact or ground, broken wires or loose connec- ton. If irregular missing is accom- panied by occasional knocking loose primary wire will usually be found the basic cause.
 An excellent method of preventing tools getting rusty is to give them a coating of vaseline in which little gum camphor has been mixed, after which the mixture is melted over a slow fire. The coating should be ap- piled to the tools with soft rag.
 Clutch spinning is often due to ex- cessive friction in the spring thrust bearing, though sometimes faulty alignment of the fly wheel and clutch cone prevent the engaging surfaces from entirely clearing each other. A bent clutch shaft might also cause this trouble.
 Owners of cars fitted with wire wheels should give these parts weekly inspection for loose spokes. While the wire wheel is strong enough to resist astonishing shocks, neverthe- less a blow may loosen one or two of the spokes and such damage should be immediately repaired. Where the enamel has cracked off, paint should be applied to keep moisture from working itssway in and inducing rust.
 It is very important that regular inspections should be made of the leather coverings or "boots" which protect the universals and other parts. Flying stones or sticks are apt to de- stroy these boots, permitting the lu- bricant to leak out and give entrance to dust and dirt Look them over at least once a month.
 In many cars water and dirt in the fuel system cause almost endless trou- ble, which may very likely be attrib- Vted to the engine proper. Dirt will clog the minute crevice in the carbu retor, causing numerous peculiar symptoms of trouble to appear. Many cars have no provision, except metal strainer in the tank, for preventing the entrance of dirt into the fuel sys- tenn. It is suggested that owners of cars so equipped fit a trap in the gas oline line. All the larger manufac- turers of earburetors have devices of this kind.
 The small, light aluminium alloy pis- tons of today are easy to damage if care is not taken in removing the wrist pins. One tool will remove any piston pin without damaging the pis- ton in the slightest. It consists of, saddle-shaped member through which a screw for pushing out the pin is mounted and heavy leather strap the latter can be made by any harness maker. The piston is placed in the strap so that the screw registers with the wrist pin and then by turning it