MG TF Series User Manual

SECTION C
Tim IGNITION EqUIPMENT
Description and Speclfication of Equipment.
Section No. C.I locating the cause of uneven firing.
Section No. C.2 Testing low-tension circuit.
Section No. C.3 The high-tension cables.
Section No. CA The sparking plugs.
Section No. C.S The contact breaker.
Section No. C.6 Distributor lubrication.
Section No. C.7 Removal of the distributor.
Section No. e.B Replacing the distributor and timing the Ignition.
Section No. C.9 Dismantling the distributor.
Section No. C.IO The condenser.
Section No. e.11 Fitting new distributor bushes.
Section No. e.12 Reassembling the distributor.
Section No. C.13 Modlfied dIstri butor fixing.
Section No. e.14- Distrlb utors with high-lift cams.
c
GENERAL DESCRIPTION
The coil Ignition equipment is provided with an
automatic advance mechanism which relieves the
driver of the necessity of adjusting the timing. The
advantages are particularly evident when accelerating
and durIng hili climbing, since the danger of knockIng
or pinking through excessive advance ts very much
reduced.
The automatic advance device Is housed in the
dIstr! butor unit, and consists ofa centrif ugally 0 perated
mechanism by means of which the Ignition Is advanced
in proportion to the engIne speed.
like the rest of the electrical equipment, it is wired
on the .. positive earth" system, which results in
longer sparking plug life.
Distributor type
The distributor is a lucas Model D2A4, Service
No. 40162 on early models and No. -ID367 on later
M.G. HId,et. lsIve 5 (H & E) 95781-9/55
models with high-11ft cams. (See Section C.14.) In
.. TF to engines the service number Is 40367A. These
identification marks are stamped on the side of the
distributor. When orderIng replacements, always
quote these numbers.
Ignition coli type
The coil is a lucas Model QI2, Service No. 45020.
These identification marks are stamped on the base of
the ignition coil. When ordering, always quote
these numbers. On later models a fluid-filled coil,
lucas No. l.AI2 (Part No. 2A536) Isfitted as standard.
Sparking plugs
The standard sparking plugs for the M.G ... TO"
MIdget on engines prior to No. XPAG/TD2/22735 are
Champion LlOS, 14 rnm., t in. reach.
Engines from No. XPAGfTD2/22735 onwards are
fitted with the Champion NA.B, 14 mm., f In. reach
plug.
C.I
Wishvilles Classic
Automobile Library

MG TF Series Specifications

General

Brand	MG
Model	TF Series
Category	Automobile
Language	English