Electrical System - Triumph TR2 Service Manual

ELECTRICAL SYSTEM
A 12 volt earth return (or one wire) lighting and starting set is fitted. One
cable should be disconnected from the battery terminal before
removing any electrical unit, otherwise there is a risk of a serious
"
short."
A list of the maker's numbers and descriptions of all electrical equipment
will be found on page 41.
IGNITION
Failure of the red warning light will not affect the ignition system, but the
bulb should be replaced at the earliest opportunity. The high tension leads
should be examined occasionally and if they are perished or worn through,
replace with the correct ignition cable, which should be obtained only from
your dealer, and should be of the correct length.
The moulded distributor cover should be removed occasionally and wiped all
over with a soft cloth. See that the carbon brush on the inside of the moulding
works freely in its holder. Clean away any trace of dirt or dust around the
contact breaker points. The points should be adjusted to give a maximum
gap of 0.015" (0.5 mm.). The distributor fitted to this vehicle has the radio
suppressor built into the distributor head. This, of course, means that an
outward inspection of the ignition and coil leads a suppressor will not be
apparent. If a replacement or spare distributor head is required,
take care to ensure that it is of the correct type with the long carbon
pick-up, which is, in fact, the suppressor.
THE BATTERY
Keep the terminals clean and well covered with petroleum jelly. If they are
corroded, scrape them clean, assemble and cover with petroleum jelly. Wipe
away all dirt and moisture from the top of the battery, and make sure that
the connections are clean. Do not over-tighten the wing nuts securing the
battery as this may result in the case becoming cracked.
THE DYNAMO
The dynamo is of the compensated voltage type and operates in conjunction with
the regulator unit which is housed alongside the cut-out in the control box.
The regulator unit ensures that the dynamo charges the battery
at
the rate
best suited to its condition. It automatically provides a large charging