TD Operation Manual - Electrical Equipment

AFTER FIRST 5OO MILES (800 Km.),
THEN EVERY 3000 MILES (5000 Km).

Remove the distributor cap and turn the engine by hand until the contacts are fully opened. Check the gap with the gauge on the screwdriver supplied in the toolkit; the gauge should be a sliding fit in the gap. If the gap varies appreciably from the gauge, slacken the two contact plate securing screws. Move the plate until the gap is correct and tighten the screws. The thickness of the gauge is .012 in. (.30 mm.).

EVERY 6,000 MILES (10000 Km.)

Wipe the inside and outside of the moulded distributor cap with a soft dry cloth, paying particular attention to the space between the terminals. See that the small carbon brush on the moulding works freely in its holder.
If the contact breaker points are burned or blackened, clean them with a fine carborundum stone or with very fine emery cloth. Afterwards wipe away any trace of dirt or metal dust with a petrol-moistened cloth.
Cleaning of the contacts is made easier if the contact breaker lever carrying the moving contact is removed. To do this unscrew the nut securing the end of the spring, remove the spring washer and flat washer and lift off the lever complete with spring. After cleaning, check the contact breaker setting on replacement.

EVERY 12,000 MILES (20000 Km.)

Dynamo and starter brushes and commutator. Check that the brushes move freely in their holders by holding back the brush springs and pulling gently on the flexible connectors. If a brush is inclined to stick, remove it from its holder and clean its sides and the inside of the holder with a petrol-moistened rag. Replace the brushes in their original positions so as to maintain the correct "bedding." If the commutator is dirty, clean it by pressing a fine dry duster against it while the armature is slowly rotated. In the case of the dynamo this can be done by turning the engine over by hand, while with the starter the armature can be rotated by a spanner engaged on the square shaft extension at the commutator end after removing the protecting cap.

THE DYNAMO DRIVING BELT

Inspect the dynamo driving belt and adjust if necessary to take up any slackness. Care should be taken to avoid over-tightening the belt, otherwise undue strain will be thrown on the dynamo bearings.
The belt tension is adjusted by slackening the bolts of the dynamo cradle and moving the dynamo the required amount by hand. Tighten up the bolts thoroughly.

CONTROL BOX

The cut-out and regulator are accurately set before leaving the Works and they must not be tampered with. The cover protecting them is therefore sealed. The fuses are accessible without removing the cover protecting the regulator and cut-out units.

The cut-out and regulator are accurately set before leaving the Works and they must not be tampered with. The cover protecting them is therefore sealed. The fuses are carried in a separate fuse box and are accessible without removing the cover protecting the regulator and cut-out units.

FUSES

Fuse marked "AUX." This fuse protects the accessories which are connected so that they operate irrespective of whether the ignition is "on" or "off." Fuse marked "AUX IGN." This fuse protects the accessories which are connected so that they operate only when the ignition is switched "on." (Stop-lamp, etc.)

Fuse connecting "Al" and "A2". This fuse protects the accessories which are connected so that they operate irrespective of whether the ignition is on or off.
Fuse connecting "A3" and "A4". This fuse protects the accessories which are connected so that they operate only when the ignition is switched on. (Stop-lamp, etc.)

spare fuses

Spare fuses are provided and it is important to use only the correct replacement fuse. The fusing value of 35 amps is marked on a coloured paper slip inside the glass tube of the fuse. If the new fuse blows immediately and the cause of the trouble cannot be found, have the equipment examined at a Lucas Service Depot.

Spare fuses are provided and it is important to use only the correct replacement fuse. The fusing value is marked on a coloured paper slip inside the glass tube of the fuse. If the new fuse blows immediately and the cause of the trouble cannot be found, have the equipment examined at a Lucas Service Depot.

HEADLAMPS

The headlamps are swivel-mounted and may be positioned after slackening off the large nut on the underside.
The reflector, rim and glass front are held in position by the small set screw at the top of the lamp. Undo this screw to release the rim. The bulb is the pre-focus type and needs no focusing attention.
The headlamp beams should be set so they are parallel with the road surface.

NUMBER-PLATE LAMP

A single bulb is fitted and the cover is removed when the small reatining screw is undone.

TAIL-LAMP BULB REPLACEMENT

Remove the two bolts, held by nuts under the mudguard and lift off the glass cover. This will display the light unit.

The rim and glass of the tail-lamps are held in the grooves of the rubber housing and may be removed and replaced with the fingers only
The dual-filament bulbs should be replaced the right way round to provide the brighter light for stop indication.
The bulbs are of a special type which can only be fitted right way round and are marked "TOP" to facilitate this.

THE PANEL LIGHTS

There are five lamps illuminating the instruments and their locations are shown in the accompanying illustration. To obtain access to them it is necessary to remove the protective panel under the facia board. There are two in each of the casings for the revolution indicator and speedometer, and one between the ammeter and oil pressure gauge. On left-hand drive models the latter is situated on the left-hand end of the panel.