Lubrication.—There are five places to lubricate the Delco System:

1. The grease clutch for lubricating the motor clutch.

2. Hole at B ([Fig. 93]) for supplying cup grease for lubricating the generator clutch and forward armature bearing.

3. The oiler C in the rear end cover for lubricating the bearing on the armature shaft. This should receive a few drops of oil once a week.

4. The oil hole in the distributor at A ([Fig. 93]) for lubricating the top bearing of the distributor shaft. This should receive oil once a week

5. This is the inside of the distributor head. This should be lubricated with a small amount of vaseline, carefully applied two or three times during the first 2000 miles running of the car, after which it will require no attention. This is to secure a burnished track for the rotor brush on the distributor head. This grease should be sparingly applied and the head wiped clean from dust and dirt.

The combination switch ([Figs. 95] and [96]) is for the purpose of controlling the lights, ignition, and the circuit between the generator and the storage battery. The button next to the ammeter controls both the ignition and the circuit between the generator and the storage battery, the latter circuit being shown in the heavier line as shown on the circuit diagram ([Fig. 98]). The button next to this controls the head lights. The next button controls the auxiliary lamps in the head lights. The button on the left controls the cowl and tail lights.

The circuit breaker is mounted on the combination switch as shown in [Fig. 96]. This is a protective device, which takes the place of a fuse block and fuses. It prevents the discharging of the battery or damage to the switch or wiring to the lamps, in the event of any of the wires leading to these becoming grounded. As long as the lamps are using the normal amount of current the circuit breaker is not affected. But in the event of any of the wires becoming grounded an abnormally heavy current is conducted through the circuit breaker, thus producing a strong magnetism which attracts the pole piece and opens the contacts. This cuts off the flow of current which allows the contacts to close again and the operation is repeated, causing the circuit breaker to pass an intermittent current and give forth a vibrating sound.

Fig. 95. Delco Ignition Switch Plate