Arizona republican., 1919-07-13

In spite of the insistence of motor car manufacturers and service men on the vital importance of fabrication as it affects the life of the vehicle, it is doubtful if the average car gets all that it really needs in this connection. Nor is the reason far to seek; we have. upward of a million new car owners in this country every year and they must learn the lessons that the pre- ceding motoring generation has come to take as a matter of course. Further, we are learning all the time in every branch of the automobile industry and the science of fabrication is constantly developing So it is that the wise mo- torist reads all that he can find in re- gard to fabrication, and here are few suggestions that may help him:
 To begin with, let us address a few words to car owners who are still us- ing grease in the transmission. Oil is the proper lubricant for the gearset. The gear teeth cut a path through the heavier lubricant and then proceed to revolve in thin air, to their great detriment. In addition, grease has the unfortunate characteristic of carrying dirt and foreign matter Of any kind
  be used, In cold weather grease is simply impossible. After the gearset has been in operation for a short time the grease becomes packed against the walls of the housing and the gears themselves get no fabrication what ever. So make this your first lubrica- ton law: Use transmission oil of the proper grade in this part of the mechanism.
 Not many years ago grease cups were used in all parts of the mechan- ism for lubricating bearings, etc. Now grease is not the best lubricant for this location, because it has a characteris- tic of getting hard in the cup so that the latter cannot be properly turned down, hence that part does not get adequate fabrication.
 It is for this reason that more and more cars every year are being fitted with oil cups in many locations, though the familiar grease receptacle still persists on many parts of even the best cars. The owner who really understands his car knows without be- | ing told that oil is better than grease, | but perhaps he does not know that if he so desires he can substitute oil cups | for the grease variety. Within the past year or so a number of very in- | genious oil cups have been placed on
 the market. embodying systems of
 gradual feed whereby the oil is per
 mitted to leak out gradually instead of
 running away in a single day as used 1 to be the case. That was always the
 trouble with oil cups, you had to keeI filling them up each daH Some oi [ Ir- l ages which permit only a slow flow ol
 oil, while others have what are knowr
 as wick feeds, wherein a wick picks
 up the oil from the cup and allows il
 to reach the part to be fabricated grad
 ually. Some of these cups need re
 plenishment only once or twice in 2 running season. Another advantage o1
 the wick feed is that, since it operates
 by capillary attraction, it does no
 carry dirt or foreign matter to tn,
 bearing surface, even if it is present il
 the cup. As a matter of fact the wici
 feed cup is probably the nearest thins
 to having the parts running in oil.
 Naturally the different parts of tn,
 mechanism require different grades O
 lubricants or better say oils. For tn,
 gearset, differential and rear axle l
 parts of the mechanism do better or
 the ordinary cylinder oil. For tn
 average car two grades. of oil vii
 practically take care of the entir
 mechanism.
 It has always been customary {,
 lubricate universal joints by means o
 grease or graphite, simply because o
 the difficulty of keeping oil in tn housing of the joint. The universal move with tremendous rapidity whel the mechanism is in operation and the need very efficient fabrication Re gently it has been found possible t lubricate the universal joints by mean of oil fed through wicks. In man cases this change in the fabrication c the universal would necessitate rede sign of the part, an expense that tn manufacturer is loath to incur. In som instances the car owner can have thi change made on his own car, and will certainly be to the advantage C his vericle's operation.
 Before we leave the subject of vic oiling it might be well to call attentio to the economy of this method Tn wick draws the oil from the cup slowl and distributes it evenly over the whol surface to be fabricated. There is II waste. A well designed wick feed 0