Headlamp and mounting brackets

Several types of headlamp unit have been used — the early ones were considered excellent, being mounted in very handsome units, while the later ones are renowned for their power. In fact, Laverda were, if not the first, certainly one of the very first, to fit quartz halogen headlamp bulbs.

Pre-October 1972 machines and all 750GTs used a 'long' Bosch 155mm headlamp which incorporated some switchgear in the top; from October 1972 to August 1973 a 'short' chromed plastic CEV 170mm was used on SFs. Thereafter, the Twin used a 160mm Bosch unit although the early GTL used the 200mm Bosch unit which was fitted to 1973 Triples. Later GTLs and all Triples used a 180mm headlamp. The SFC used a special unit, the lamp being fitted to the fairing.

Both the Bosch 155 and the CEV 170 headlamps have a screw clamp rim fixing. The Bosch has a 'head on' bolt while the CEV is attached from the side. Once the rim fixing bolt is loosened the rim should come away and the glass unit will free. The Bosch uses wire 'springs' to hold the rim to the glass to the reflector, with another rim in between. The bulb is located into the reflector and is clamped from behind with a holder. In this holder is the side lamp bulb. The bulbs are pre-focus conventional 'dull' and are contacted by a special press-on connector. The CEV reflector and glass are integral and are held into the external rim by another inner rim. The headlamp bulb is a press-on fit with a push-on connector. The side lamp is a bayonet bulb in its own little holder which pushes into the reflector.

It is not possible to fit halogen bulbs into either the Bosch 155 or CEV 170. The 155 has two warning light bulbs fitted 'beneath' the key These are easily got at through the inside of the headlamp shell.

The 160, 180 and 200mm Bosch halogen units are easily tackled. The headlamp rim and reflector are a press fit onto the shell. On the 160mm use a flat-bladed screwdriver of the right size to push up the locating lip on the inside of the rim — this is found underneath the rim and is the inner slot. Press up the lip found inside and the rim/lamp should come away. On the 180 and 200mm remove the cross-head screw at the front of the rim. Pull off the headlamp bulb and side lamp bulb connectors. It amounts to two connections, for the headlamp bulb is a three-in-one fitment. The halogen bulb is easily changed. It is held into the reflector with two wire clips which are held onto the reverse side of the reflector. Unhook both and carefully remove the bulb. Do not touch the 'glass' with your fingers. It will ruin the bulb. Replacement is quite straightforward, the bulb can only fit one way. The side lamp bulb sits in its own holder which is a press fit into the reflector. The bulb itself is a bayonet fit into its holder.

The three-mto-one connector can become a loose fit thereby providing unreliable contact. Once this starts, the only answer is to replace the connector completely.

NOTE: Halogen bulbs are expensive and easily ruined. The best equipment is German-made Philips They- also suffer from vibration, their elements fracturing almost as you look at them. If you carry a spare (very wise) make sure that it too is cushioned. The side lamp bulbs require care. Do not fit later halogen 20W side light bulb to earlier machines without studying the relevant wiring 'diagram.

A number of headlamp mountings have been used over the years. Each has been designed to cushion the headlamp and its bulb adequately. Halogen bulbs need special treatment. Never alter the factory's fitment to this end.

The very early non-halogen headlamps were mounted nearly solid onto stanchion mounted 'tube' brackets. (GT, S and SF up until 1972 used similar fittings to the Triple). There is nothing special about the mounting and brackets. The 'tubes' can only be removed by taking off the top yoke. The headlamp is fixed to the 'tubes' by a setscrew and washers on each side.

The mounting used for the halogen fitted SF is a special double ended rubber bush. It threads into the headlamp shell, and the bush then sits on the inner side of the headlamp mounting 'tubes'. A special dome nut and washer fixes the other end of the bush to the 'tubes'. The flashers may be carried on this mounting too. The GTL and Triple headlamp mounting differs. The rubber cushion is not on the shell to 'tube' mounting. This is a solid fixture. The headlamp shell 'triangular' bracket is rubber mounted to the 'tube' instead, via three bolts and washers.

The SFC Carello headlamp unit (in use in 1975 and other years)
Close up of the Triple's headlamp and front flasher A late square CEV flasher front unit with side reflector, mounting. The rubber cushion mountings are behind as fitted for the North American market the triangular headlamp bracket

The GTL and Triple headlamp mountings are far superior to any of the others in that they provide excellent vibration cushioning. They can be fitted to other models but only in conjunction with the 180/200mm headlamp. The actual fixings, headlamp shell to mounting triangles incorporate the front flasher stems.

The SFC headlamp fixes to the fairing by interference fit around the rubber rim visible at the front of the machine, although there are also a number of fixing screws beneath that rubber rim, fixing the headlamp base on the inside of the fairing to the fairing. It clamps the integral glass/reflector unit to the fairing. A special cover is then fixed to the base on studs. Remove this cover and the headlamp bulb and side lamp are exposed. There may be slight differences to the fixtures already described, according to the age of the machine.

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