Rivets in the Leather.—Keep the rivet heads free of metallic contact. This, and care in putting on the leather evenly will make a clutch that is sure to give you efficient service. If it does not grip quickly after the foot releases it, the spring is not at proper tension. On the other hand, the spring should not be too strong, and to push back the foot with too great force, because this will set the clutch, and give the car an unpleasant jerk.
Transmission System.—The transmission system should be examined at frequent intervals. The main thing is to note the ball bearings, and to remove old grease which has accumulated there. All ball bearings, however made, and applied, have more or less of a grinding effect. As a result, small particles of iron are cut off from the contact surfaces, which is indicated by the fact that the grease is discolored, or blackened.
The grease which is allowed to remain in the case for a long time has these small particles in contact with the balls and runways, and is sure to wear more than new grease. Plumbago in the grease will be of great service in aiding to coat the balls with a good surface.
These remarks as to the removal of old grease is desirable wherever ball bearings are employed. The gears in the case should also be examined to ascertain whether the edges are chipped, or what the wearing action is.
The Differential.—This also requires care, but carelessness in lubrication is the only feature lacking in so many cars, and it is the most frequent shortcoming with the novice. The differential seems to be the one part of a car which, in his estimation, requires no attention.
If there is any play between the pinions and the studs, it should be promptly taken up. This can be done, usually, by inserting washers of proper thickness behind the gears, in cases where no provision has been made for adjustment.
Universal Joints.—The wearing points of the universal are in the pins. These are susceptible of a great deal of wearing down before the facts will make themselves known in the operation of the machine, hence the necessity of examining this part when you are on an inspecting tour.
Steering Gear.—The steering gear should be taken apart, and every working portion cleaned. The ball-bearings may be worn, or the joint out of adjustment, to which the stiffness of the turning movement is likely due.
Worm and Worm Wheel.—When wear begins between the worm and worm wheel, there is a looseness apparent, so that the steering wheel must, sometimes make a considerable part of a turn before the effect will be apparent on the wheels. This should be taken up so the wheels will be in full mesh.
The rod from the sector lever to the pedal should be taken off and examined, to see whether or not it is bent, and properly adjusted as to length.