MG TF Series Instruction manual

,
i
MIDGET
(Series TO)
, \. ~ D
(Series TF)
WORKSHOP
MANUAL
•
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MIDGET
(Series .. TO ")
_-\.~D
(Series M TF ")
WORKSHOP
MANUAL
NOTE
Instructions given in this manual for servicing the M.G. Midget Series" TO" are
also applicable In the main to the Series" TF." In cases where components are
not common to both Series, the necessary descriptions and instructIons for the Series
••TF .. will be found at the end of the appropriate section.
The following are the main items affected: Instruments and Switches, Carburet-
ters and Air Cleaners, Radiator, Body, Lights.
R.eferences in
the text to "later models" should be understood to read " later
Seri as • TO' models and all Series • TF' models" unless otherwise stated.
Amendments to the manual are on Iy made by th e issue of revised sheets, or additio naI
sheets for insertion at the end of each section. It is therefore of the utmost importance
to refer to the end of each section before carrying out any work on the vehicle.
The part number of this manual, which should be quoted when a copy is ordered,
Is AKD580A.
Published by
THE ~.G. CAR COMPAX'~ LIMITED
Prop ..... ", ?ll.ORRIS 1II0TORS LIMITED
£-\ bin g don -0n - T haul e s
NUFFItiLD
Sole Exporters:
EXPORTS
LIMITED
P,opti"",., MORRIS :MOTORS LIMITED
M.G. Midcet. Issu~ 8 (H &E) 99184-)/56
-
Oxford
-
England
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I 111111 fl .... _ It tt _ 1111111, 11111,..' .. ,. .. un 1111'
1I ... lt.-Hettl_ttln""".II ..., ... tt,,," .... 1I1 'ttHll1lllltll ......
2M.G. Midget. Issue5 (H &E)
942994/55
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CONTENTS
General Data (Series" TD It). Pages -4 to 7.
General Data (Series" TF "), Pages 19 to 21.
General 1nformation (Series ., TO "). Pages8 to 18.
General Information (Series •• TF "). Pages 13 to 26.
Maintenance Attention (Free and Periodical)
Frost Precautions
Engine
Fuel System
IgnitJon Equipment
Cooling System
(SerIes" TO ..)
Cooling System (Series" TF ")
Flywheel and Clutch
Gearbox ...
Propeller Shaft
Rear Axle
Rear Road Springs
Steering
Gear ...
Front Suspension
Hydraulic Dampers
Braking System ...
Electrical Equipment
Wheels and Tyres
Lubrication
Special Tools
Body
Chassis Frame RepaIrs ...
M.G. Mklpt.. Issue J(H &E) B2966--1 l54
Section
A
B
C
o
DO
E
F
G
H
K
L
M
N
o
P
Q
R
S
3
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GENERAL DATA (SERIES" TO ")
ENGINE TYPE
First overs ize bore
Second oversize bore
Radiator hose bottom
Gudgeon pin diameter
Centre main bearing-end clearance
Marn
bearings-diametrical clearance '"
Crankshaft-end thrust taken on
Number of camshaft bearings
Type
of camshaft bearings
XPAG/TD up to Engine No. 9407.
XPAGfTDf2 from Engine No. 9408.
Four.
1250 c,c, (761cu. ln.).
54·4 at 5,200 r.p.m.
66 '·5 mm. (2,618in.).
9Q mm. (3,543 ln.).
10·97 h.p,
7·25 to J.
Thermo-slphcn-e-pump and fan assisted.
Length 4in.
(10,16 cm.),
Diameter 2-& in. (5·56 cm.),
Length
21 in. (5'71 cm.),
Diameter IiIn. (2·86crn.).
+·020 In. (,50 rnm.).
Actual bore 2·6381 in. (67 rnrn.].
+·040 in. (1,00 rnrn.),
Actual bore 2·6581 in. (67,5 mm.).
1-3-4-2.
·0021 In. to ·0029 in. (,056 mm. to ·071 rnm.].
·006 in. to ·0 10 in. (,152 mm. to ·254 mrn.),
Two.
2·25 mm. (·0885 ln.).
One.
4·0 mm. (·1575 rn .).
50 to 70 lb. per sq. in.,(3·5 to 5·0 kg./cm.2) .
40 to 45 lb. per sq. in. (2·8 to 3·2 kg./cm.2) .
Clamped.
. [+·0004 in.
·7087 Ill .+.0006 in.
18 [+ '010 mm.
mm. -1,015 mm.
Fit in piston
Double thumb press.
Fit in connecting
rod Clamped.
Crankpin diameter (standard) l·n2 in. (45 rnrn.].
Crankpin minimum diameter for regrind 1·722 in. (43,75 mm.),
ConnectIng rod-length between centres 7·008 in. (178 mm.).
Connecting rod-type of bearing Shimless, steel-backed, white-metal-lined.
Connecting rod-side clearance ... ·004 in. to ·006 in. (·10 mm. to ·ISmm.).
Connecting rod-diametrical clearance ... ·0005 in.to ·002 in. ('011 mm. to ·056 mm.).
Number of crankshaft bear ings ... Three.
Type of main bearings Shlrnless, steel-backed. whlte -rnetal-llned.
Standard main journal diameter .. , 2·047 in. (52 rnm .),
Main journals first regrind diameter 2·027 in. (51-49 rnm.),
Main journals second
regrind diameter (minimum) 2·007in. (50·98 mm.).
Main -bearings- len
gt h Front 1-496 in. (38 mm.).
Centre 1-496 in. (38 rnm.},
Rear 1·575 in. (40 mm.],
·0014 in.
to ·0037 in. (·035 mm. to ,095 mrn.).
·0008 in.
to ·003 in. (·020 mm. to ·075 rnm.).
Centre bearing.
Three .
White metal (front).
Zinc alloy
(rear and centre).
Firing order
Piston clearance at pressure face below 011 rlng ...
Ring gap
Number of compression rings
Width of compression rings
Number of oil rings
Width of oil ring .. ,
all pressure relief valve operates
Oil pressure (normal)
Gudgeon pin
type ..,
Number of cylinders
Capacity
B.H.P.
Bore ...
Stroke
R.A,c; rating
Compression ratio ...
System
of cooling
Radiator hose
top ...
4M.G. Midget. Issue 3 (H &E)
82966-1 1'54
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Valve spring pressure-open
Camshaft-bearing clearance
Camshaft-end thrust taken on
Camshaft-end float
Camshaft-drlve (type) ...
Valve timing markings
Exhaust valve
throat diameter
Exhaust valve diameter
Inlet valve throat diameter
Inlet valve diameter
Valve seat angle
Tappet type
Valve lift-Inlet
Valve lift-exhaust
Inlet valve opens .
Inlet valve closes .
Exhaust valve
opens
Exhaust valve closes
Valve
spring pressure-shut
GENERAL DATA-continued
Front ·0016 in. to ·004 in. (·04 mm. to ·10 rnrn.).
Rear and
centre ·0018 In. to ·0037 in. (-045 mm. to
·095 mm.).
Front end.
·005 In. to ·013 In. (,125 mm. to ·325 mm.).
Duplex chain, iin. pitch, 60 pitches, endless.
White chain links and" T " marks on wheels.
1·024 In. (26 mm.).
Head
1·221 in. (31 mm.) ;Stem ·315 In. (8 mm.).
1·181 In. (30 mm.).
Head 1·299 in. (33 mm.) ;
Stem ·315 In. (8 rnm.],
30°.
Hollow.
·315 In. (8 mm.).
·315 in. (8 mm.).
11
0before
T.D.c.] From JS° before T.D.C.
5]0 after B.D.C. Engine 45° after B.D.C.
sz- before B.D.C. XPAG/TO/2 45° before B.D.C.
24° after T.O.C. No. 241 16 5° after T.O.C.
Inner 31 lb. at 1·753 In. (14·06 kg. at 4·453 em.).) Total 93 lb.
Outer 62 lb. at 1·847 in. (28·12 kg. at 4·692 em.). (42,18 kg.).
Inner 43 lb. at 1·"B8 In. (19,5 kg. at 3·678 crn.]. JTotal 123 lb.
Outer 80 lb. at 1·532 in. (36·29 kg. at 3·89 em.). (55·79 kg.).
Engines up
to No. XPAG/TD2/24 I15 :
Inlet and exhaust valve working clearance (hot) ·019 in. (.4S mm.),
Engines from No.
XPAG/TD2/24 I16 :
Inlet and
exhaust valve working clearance (hot) ·012 in. (,30 mm.],
Valve guides Removable.
FUEL
SYSTEM
Fuel tank reserve level
Fuel delivery
Carburetters
Carburetter needles
CLUTCH
Type (up to Engine No. 9-407)
Type (from Engine No. 9408)
Facing
Warning light on panel.
S.U.
electric pump.
S.U. semi·downdraugh.t.
Standard-ES. Weak-AP. R.ich-EM.
Borg &Beck
7! in. (18,4 em.) diameter. Dry plate.
Borg &Beck 8 in. (20,3
cm.) diameter. Dry plate.
Type RYZ
on7 in. diameter clutch.
Moulded
type on 8 in. diameter clutch.
GEARBOX
Synchromesh
Ratios Top
Third
Second
Bottom
Reverse
... Second, third and top.
Gearbox Overall 8/41 Overall 8/39
1·00 5·125 4-875
1·385 7·098 6·752
2·07 10·609 10·09
3·5 17·938 17·06
3·5 17·938 17·06
Overall 9/41
4·555
6·309
9·429
15·942
15·942
M.G. Midget (Series "TO "), Issue'" (H • E) <13692-StSS 5
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GENERAL DATA-continued
6
FRONT SUSPENSION AND STEERING
Camber (static position)
Castor angle
Toe-In
King-pin inclination
Track
Turning circle
Wheelbase "_
Tyre size
Tyre pressures
REAR AXLE
Type of axle
Type of drive
Ratio
Adjustment '"
BRAKES
Type ...
Type of linings
lining size-front
Lining size-rear
Number of rivets
SPRINGS (front)
Type ...
Free length "_
Mean coil diameter
Number of effective calls ...
Diameter of wire (ground)
Maximum deflection
SPRINGS (rear)
Type '"
Length
Width
Number of leaves
Thickness of leaves
Camber (free)
Working load
HYDRAULIC DAMPERS
Type '"
ELECTRICAL
Distributor rotation
Automatic advance
Contact breaker gap (first type) ...
Contact breaker gap (second type)
Sparking plug (engines prior to No. XPAG/TD2/
22735)
Nil (tolerance ±I 0).
r±!O with side-members parallel to road.
Nil.
90to 10!0 full bump.
Front 47! in. (]·203 m.), Rear 50 In. (1,27 rn.),
31 ft. 3 in. (9,525 m.).
7ft. 10 In. (2,388 m.),
$·50-15.
181b. per sq. In. (1·27 kg./cm.2).
Semi-floating.
Hypold.
8/41,
8/39 or 9/4J.
Byspacers and special fixtures.
Lockheed hydraulic
two leading shoe (front) (9 in. dla.].
Ferodo MR.19.
8·75 in. X
1·5 in.X·187 in. (22;22 em. X3·81 em. X
·47 crn.).
8·75 in. x 1-5 In.x ·187In. (22·22 em. X3-81 em. X
·47 cm.),
Twelve per lining.
Coli.
9·59 In.±n- In. (24·36 c.m.±1·58 mm.).
3·238 in. (8,24 em.).
7!.
·498 in. (1'27 cm.).
4·24 in. (10·78 cm.),
Half-ellIptic,
42 In. (106,7 cm.],
I! In. (3·81 crn.],
Seven.
"* in. (5·56 mm.],
4,[ In. (10·4 crn.],
500 lb.
at iIn. positive camber.
(226'S kg. at 12'7 mm. positive camber.)
Glrling or Armstrong.
Cou nter-c1ockwise.
3r on crankshaft.
·010 in.
to ·012 in. (,25 mm. to ·30 mrn.),
·014 In. to ·016 In. (·36 mm. to ·41 mm.),
Champion L.10S (standard equipment] (14 mrn.),
K.L.G. E.80.
Lodge HN or HNP.
M.G. Midget (Series .. TO "). Inue 4 (H &E) 93692-.-5/55
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GENE RA L DATA-con t! nued
Sparking plug (engines from No. XPAGjTD2i
22735)
Sparking plug gap
Ignition timing
Charging system
Battery
CAPACITIES
Sump
Gearbox
Rear axle
Cooling system
Brake fluid
Fuel
tank
GENERAL DIMENSIONS
Length
Width
Height
Ground clearance
Weight (unladen)
Weight (laden and with two passengers)
Champion NA.8.
·020 in. to·022 In. (,50 mm. to ·56 rnm.),
T.D.C. (full retard).
c.Y.C.
Lucas GTW9A, 51-amp. at 10 hours. 12-volt.
Positive
earth return.
9pints (10·8 U.S. pints; 5·1 litres); from Engine
No. 14948.
IO! pints (12,6 U.S. pints; 5·96Iitres).
Ii pints (1,5 U.S. pints; ·71 litre).
21 pints (2,7 U.S. pints; 1·3Iitres).
12 pints (14·4 U.S. pints; 6·8 lttres].
Ipint (1,2 U.S. pints; ·57Iitl'e).
12t gallons (15 U.S. gallons; 57Iitres).
145 in. (3'683 m.).
58t in. (1-489 m.).
53 in. (1·346 m.),
6 In. (15·24 crn.),
18! ewt. (2,072 lb.) (941 kg.).
22 cwt. (2,464 lb.) (1120 kg.).
Cylinder head
stud nuts ...
Connecting rod big-end bolts
(to next split pin hole)
Main bearing cap nuts
(to next split pin hole)
Steering wheel
attachment nut
Gudgeon pin clamp screw
M.G. M1dlet. bsue 5 (H &E) 95871-9,'55
TORQUE SPANNER DATA
500 lb. in. (5,75 m./kg.).
320 lb. in. (3,7 m./kg,).
750 lb. in. (8,6 m./kg.).
500 lb. In. (5,75 rn.jkg.),
400 lb. in. (4,6 rn.jkg.).
7
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GENERAL
INFORMATION
(SERIES U TO ")
GEAR POSITIONS
The gearbox has four forward speeds, with synchromesh on second. third and top. The
gear lever posItions are shown In the lllustratlon below.
To engage reverse gear, move the gear lever to the extreme right of its neutral posltlon:
exert sufficient pressure to overcome the resistance of the spring-loaded stop, and move the
lever rearwards.
The instrument panel with the ignition
switch key indicated by
the arrow. The
Ignition switch is in
the centre of the
lighting switch and the remainder of the
Instruments in the top row are the horn
push and
dipper SWitch, the ammeter. and
the 011 gauge. respectively. Later models
have a fooc-operated dipping switch, a
combined
water temperature and oil
pressure gauge, and modified speedometer
with headlamp beam indicator light and
revolution
indltator dials.
The positions of
the gearlever lor selecting
the varia us gears are here indicated.
The location of
the gears Is also indicated
diagrammatically on the top of the gear
lever knob.
8
THE INSTRUMENT PANEL
All switches and instruments except the speedometer and revolution indicator are carried in
the central instrument panel, with the exception of the dipping switch fitted to later models.
At the top left is the lighting swltch controlling the lamps, In the centre of which is the
key-operated ignition switch. Turning the switch clockwise switches on the ignItion and the
ignition warning light at the bottom right-hand corner of the panel.
To the immediate right of the lighting swItch is the combined horn push and headlamp
dimming switch. It Is clearly marked" D .. for the dip position and" H " for the full beams.
Later models are fitted with a foot-operated headlamp beam dipping switch and this switch
lever is omitted on such models.
Next to the dipping switch is the ammeter. This is of the usual central zero type indicating
both charge and discharge.
The right-hand instrument is the oil gauge. Thts should normally indicate apressure in the
region of 40 to 45 lb. per sq. in. (2·8 to 3·2 kg./em.2)at normal running speeds. It will of cou rse
show ahigher figure when the engine is cold and a lower figure when the engine is running slowly.
On later models this Is combined with a water temperature gauge.
So long as it is showing areasonable pressure it may be taken that the circulating system
is working satisfactorily.
The bottom left-hand switch In the instrument panel is the switch for the panel light. It is
of the rotary type.
M.G. Midget. Issue 5 (H &E) 95781-9/55
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GENERAL INFORMATION-continued
The next switch, reading from left to right. is the switch operating the fog-lamp. It Is of
the semi-rotary type. Fog-lamps are not fitted as standard, but the switch Is ready-wired so
that one may be fitted if desired.
Next is the mixture control knob which pulls out to provide an enriched mixture. It can be
locked in several set open positions by turning it antt-clockwtse through 90'" It should be
returned to the" Off" position as soon as possible once the engine Is running. The mixture
control is interconnected with the throttle so as to co-ordinate the setting of the two auto-
matically when starting from cold.
The instrument panel with the panel light
SWitchindicated by arrow. The remaining
items at the bottom of the panel are the
fog-lamp SWitch. the mixture control, the
inspection lamp plugs, the starter switch,
the fuel warning light, and the ignition
warning light.
On
the facia in front of the driver are the
large-diameter revolution indicator and
the
speedometer.
In the centre of the panel are the two plug sockets for feeding an inspection light when
required. They are always live and have no separate switch. The rims of the sockets are
coloured red and black, indicating positive and negative in the accepted manner.
To the right of the sockets is the starter switch which is of the pull type. It must always be
operated smartly and decisively over Its full range of movement.
At the bottom right-hand corner of the Instrument panel are two warning lights. The one
on the extreme right is the ignition warning lamp which glows when the ignition is switched
on, until the engine runs at sufficient speed to cause the dynamo to charge the battery.
The left-hand warning light comes into operation when the fuel in the tank falls to
approximately 21 to 3gallons (11,3 to 13·5 litres), thus giving warning that the fuel supply is
getting low and In need of replenishment at the first opportunity.
Two large instruments are located rIght in front of the driver on the facia board. These
are the revolution indicator and dock. and the speedometer, respectively.
A knob below the speedometer enables the trip recorder scale to be returned to zero when
It is pulled downwards and turned, and on later models a headlamp beam warning light is fitted
in the speedometer dial which glows when the headlamp beams are in the raised position to
give the driver warning to dip his lamps when approaching other traffic.
The dock In the revolution Indicator is set byInserting the hand in the hole in the underpanel
to reach the knob on the back-plate of the clock.
M.G. Midget (Series ., TO •'}, Issue 2 (E) 193<45-1/53 9
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GENERAL INFORMATION-continued
SIDESCREEN STOWAGE (FIRST TYPE) (For details of second type see pages 17 and IS)
It Isof
the utmost importance that the sldescreens be packed together exactly as Indicated.
otherwise It will
not be found possible to insert them Into the compartment In the boot provided
to house them. The necessary sequence Is shown below.
Q)
Start with the
right-hand front side-
screen and lay
it down
on something flat as
indicated In
(I). taking
care
that the stays are
the rlghtway up. Then
place
the left-hand
front sldescreen on top
of It as shown, with Its
flap folded under and
the stays at opposite
ends as illustrated•
..
The right-hand rear sidescreen Is the n placed on top of the other two as shown In (2). tucking
Its front bracket underneath
that of the left-hand front sldescreen, so that It lies flat upon the
other. taking up the minimum amount of room.
10
This Is followed
by
the left-hand rear
stdescreen,which Is laid
upon
the others in the
opposite direction with
Its bracket slipped
under the cranked stay
of the right-hand front
sldescreen with which
the pack was first
started (3). This
pro·
duces a pack of
minimum dimensions.
as shown In (4).
@
M.G. Midget (Series "TD "). Issue 2 (E) 79345-1/53
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GENERAL INFORMATION-continued
Finally the com-
plete pack
of screens
(4) Is transferred to
the space In the body
behind
the seat pro-
vided to house them.
They should be
Inserted into the com-
partment, bracketsfirst
(5). taking care that
they are not forced into
position
or damaged,
and hold lng back
the
edge of hood to facili-
tate their insertIon as
shown at (6). ®
FOLDING THE HOOD
To ensure that the hood does not receive unnecessary damage It is Important that It should
be folded
correctly when stowed. The four steps for correctly folding the hood are here shown.
Neverfold the hood when Itls damp or wet. Always wait till It dries.
Before folding
the hood back.
release
the press buttons at each side.
Make
sure that no hood material Is
trapped between the hood-sticks. and
that the rear panel of the hood Is
pulled well forward. as at
(I). Then
fold
the hood-sticks right down and
gently pull
the hood material out as
at
(2.).
Now fold the two corners in at
right angles. and fold
the hood as
illustrated in (3). The hood material
Is
then folded over again as shown at
(4). and it is
then ready for the
tonneau cover to be fltted over It.
M.G. Midget (Series" TO "). Issue 2 (E) 8/52 II
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GENERAL INFORMATION-continued
JACKING THE CAR
When jacking the front wheels the jack pad should be located in the hollow on the under side
of
the outer end of the lower wishbone to avoid the possibility of the jack sllpping.
In
the case of the rear wheels the most convenient place is under the springs close to the
axle as shown in the accompanying 1llustration.
When jacking the front wheels th e jack
should be engaged with the hollow
of the lower wishbone pan as shown.
When used at the
rear the jack is best
engaged with the rear spring as dose
to the axle as posslble.
12
WARMING UP THE ENGINE
As soon as the engine has started, return the mixture control to its half-way position. Do
not race the engine while It is cold, but let It run at a fast tick-aver-approximately 1,000 r.p.m.,
corresponding to 15 rn.p.h. (24 km.p.h.) In top gear-until it has warmed to allow the oil to
circulate properly. Return the mixture control to the completely" Off" position as soon as
possible without causlng the engine to spl utter.
Blanking off the radiator will assist in warming the engine in cold weather. but never run
the car with the radiator completely masked.
CHASSIS AND ENGINE NUMBERS
When in communication with the Company or your Dealer, always quote the type of
model and the chassis and engine numbers. The registration number is of no assistance and is not
required. Write your name and address legibly.
Model. This Is stamped on the identification plate which is secured to the left-hand side
of the dash panel beneath the bonnet.
Chassis Number. For convenience this is also stamped on the identification plate as well
as on the chassis and shouId be <! uoted with its prefix.
Engine Number. Every engine carries a number stamped ana disc which is secured to the
flywheel housing. This number is also duplicated on the identification plate.
Note.-On later models the model symbols and chassis numberare incorporated in asingle panel
on the identlficatfon plate.
M.G. Midget (Series "TO "). Issue 2 (E) 8/52
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M.G. Midget (Series "TO "). Issue 2 (E) U34S-ljS3
13
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i
"""I
M.G. Miclget (Series" TO ").
Issue 2 (E) 79345-1/53
EARLY MODELS WITH
THROW-AWAY FILTO.
SEE PAGE A.30 FOP.
LATER MODEL
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(TRANSVERSE SECTION) I
THE
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(Series .. TD ")
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14
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MAINTENANCE
ATTENTION
FIRST SOC MILES (800 KM.) FREE SERVICE ATTENTION
(a) Drain sump. gearbox and back axle. and refill with appropriate lubricant.
(b) 011 and grease vehlcle throughout with appropriate lubricant.
Note.-New lubricants chargeable to customers.
(e) Check and, If necessary. adjust:-
(I) Ignition ti mIng and automatic controls,
(2) Tappet clearances and valve rocker-shaft brackets to recommended pressures.
(3) Carburetter control gear, mixture setting and slow-running.
(<4) Dynamo drive belt.
(5) Correct clearance for dutch pedal.
(6) Alignment of front wheels.
(7) All steering controls.
(8) Tyre pressures.
(9) Spar king piugs and d lst ri butor poi nts,
(d) Check brakes functionally. also level of Lockheed fluid in supply tank.
(e) Look over and tighten all nuts. particularly cylinder head. manifold. universal joints.
wheels, spring clips and body bolts. Also check tightness of all water connections
and clips.
(f) Top up battery and check working of all electrical equipment.
(g) Inspect hydraulic dampers for leaks. Top up oil levels if necessary (piston type only).
(h) Check doors for ease of opening and closlng. If necessary lightly smear dovetails and
striking plates with approved lubricant.
All this first service is free. only material used being charged for.
PERIODICAL
Every 250 miles (400 km.): Inspect 011 level in engine. Replenish if necessary.
Every sao miles (800 km.): Apply grease gun, tilled with grease to Ref. 0 (page P.2) to
the folloWing grease nipple fittings. and give pump three or four strokes :-
... on steering swivel pins. 2 on steering tie-rod arms.
Models with left-hand steerlng have an extra grease nippleon the clutch and brake pedal shaft.
See that radiator is full of water. (See Section 0.1).
Test tyre pressures. (See Section 0.1.)
Every 1,000 miles (1600 km.): Inspect oil level In gearbox and rear axle. Replenish if
necessary to Ref. B (page P.l).
Apply grease gun filled with grease (Ref. page P.2) to all grease nipples.
Apply grease gun tilled with grease to Ref. C (page P.2) to grease nipple on water pump
spindle and give two or three strokes.
Examine level in Lockheed brake supply tank and replenish with Lockheed Genuine Brake
FlUid If necessary. (See page M ..... )
Top up battery with dlstllled water.
Make visual inspection of hydraulic lines and pipes. Check brakes and adjust if necessary.
Add a thin engine oil to carburetter pl5ton dashpots to Ref. F (page P.2).
Every 3.000 miles (5000 km.): Drain engine and refill with fresh oil to Ref. A (page P.2).
Withdraw rotating arm from distributor and add a few drops of oil to the aperture. Lubricate
the automatic advance mechanism with engine 011. Smear contact breaker rocker-arm pivot
with grease to Ref. D (page P.2). or trace of engine oil.
Use the ollcan, filled with 011 to Ref. F(page P.l). 5paringly on the door hinges, bonnet locks.
carburetter controls. hand brake lever and seat runners.
Remove dynamo lubricator cap and refill with the recommended grease to Ref. C (page P.2).
Clean and re-oil the air cleaner (overseas).
Check dynamo belt tension and adjust if necessary.
Clean petrol pump points. Check contact breaker gap.
Check dutch pedal free movement and adjust if necessary.
M.G. Midget. Issue 6 (H &E) 9·U99--6!55
15
Wishvilles Classic
Automobile Library

MAl NTENANCE ATTENTION-continued
Clean and examine the gaps of the sparking plug points and make sure that they are not
too wide; they should be ·020 in. to -022in. (,50 mm. to -56 mrn.),
Change wheels round to regularise tyre wear.
Every 6.000 miles (10000 km.) :Remove filters from carburetters and petrol pump. clean
and replace. (See Section B.)
Grease the revolution indicator drive gearbox. Ref. D (page P.2).
Replace
external oil filter on early models with a new one. On later models (from Engine
No. 14224) fit
new filter element.
Clean and re-oll
air cleaner (Home).
Drain gearbox and rear axle. Refill with fresh oil.
Remove front wheel covers and give one stroke of grease gun. filled with grease to Ref. C
(page P.2),
to hub nipple (early models). Remove grease-retaining cap and replenish with
grease
to Ref. C (later models).
Check valve
tappet clearance.
Tighten
door hinge and stri ker plate flxlng screws and spri ng seat bolts.
Check wheel alignment.
Every 12,000 mi les (20000 km.): R.emovesu mp. Clean sump and Internal oil filter, replace
and refill
with fresh oil.
Examine fluid level in
front and rear dampers, clean and replenish with Glrllng or
Armstrong piston-type fluid if necessary. (See Section L.I.)
Replace sparkIng plugs with
new ones. Check dynamo and starter brushes.
Adjust clutch pedal clearance. (See Section E.I.)
Lubricate
steering rack and pinion to R.ef. B(page P.l). Drain and flush out radiator.
Check steering and suspension moving parts for wear.
FROST PRECAUTIONS
16
If the car is not stored In a warmed building, steps must be taken to prevent the cooilng
water from freezing during frosty weather. Water upon freezing expands. with the result
that t here Is a very co nslderabIe risk of bursti ng eithe r the rad I ator or the cylInde r block by the
pressure generated. As a precautionary measure. the water shouldbe drawn from the radiator
before the car is stored for the night. or, better still, an anti-freezing solution may be used.
We recommend the use of Smiths" Bluecol," Shell" Snowfla.ke " or Filtrate" Nevafreze ..
non-corrosive antl-freeze In
order to protect the cooling system.
The
recommended quantltles of anti-freeze for different degrees of frost resistance are :-
Down to Down to
7"F. (--HOC.) O°F. (-18°C.)
Series" TD" Quantity 2tpints (1'4 Iitres) Quantity 31 pints (2 Iitres)
Series ..
TF" Qu antity Itpints ('85 litre) Quantity 2 pints (1,14 litres)
Where temperatures below 00F. or _18° C. are likely to be encountered, asolution of at
least 25
per cent. of anti-freeze must be used to ensure imnwnlty from trouble. Consult your
local Dealer on this matter.
First decide what deg ree offrost protection is req uired befo re adding ant i-freeze to rad iator.
Make
sure that the cooling system is water-tight and examine all joints. replacing any
defective
rubber hose With a new one.
Before introducing anti-freeze mixture to the radiator it is advisable to clean out the cooling
system
thoroughly by draining out the water and swilling out the water passages with a hose
inserted in
the rad later filler, keeping the drain tap open.
Avoid excessive topping up, otherwise there Is a risk of losing valuable anti-freeze due to ex-
pansion of
the solution. Only top up when coolIng system is at its normal running temperature.
Generally speaking, and-freeze is not Injurious to cellulose paint, provided it Is wiped off In
reasonable
time. It must not, however. be allowed to remain 6n the paintwork.
M.G, MIdget. Issue 6 (H &E) 94299-6/5$
Wishvilles Classic
Automobile Library

CD
GENERAL INFORMATION-continued
SIDESCREEN STOWAGE (SECOND TYPE)
Later models are fitted with amodified hood and deeper sidescreens. The following
directions must be followed when carrying out the stowage of the sldescreens on such models,
and no
attempt must be made to stow them as described on pages 10and II.
Start with the
left-hand rear side-
screen and place it in
the space provided for
housing the side-
screens, as in Fig. J,
with the attachment
lugs faclng towards the
front of the car and
with the canvas part
up against the left-
hand
body panel. The
right-hand rear side-
screen should now be
placed in
front of the
first one, again with
the attachment lugs
facing
towards the
front of the car, but
with the canvas part
up against the right-hand panel, as in Fig. 2.
@
material of which the screens are made.
unnecessary.
Insert the right-
hand front stdescreen
as in Fig. 3 with its
lugs pointing
down-
wards and its flap
folded
under towards
the rear of the car.
Make
sure that it is
inserted as far down-
wards as it wi II go.
This is followed by
the
left-hand front side-
screen, which is also
Inserted with Its
attachment lugs to the
bottom and its flap
folded
under to the
rear, as In Fig. 4. Be
careful
not to scratch
the transparent
If stowage is carried out correctly the use of force is
BM.G. Midget (Serle$ .. TO ,.J.
tUue I (E) 79145-1/53
17
Wishvilles Classic
Automobile Library

GENERAL INFORMATION-continued
Finally, ensure
that the screens are
Inserted fully. as In Fig.
5. when the stowage
compartment lid may
be closed and secured
by means of the two
press studs.
18
FOLDING THE HOOD
The hood on later models Is fitted with an extra hood stick In the frame at the front end.
This, however, does not affect the foldlng procedure. and the Instructions given 0" page II may be
followed when performIng this operation.
M.G. Midget (Series" TD "). Issue I (E) 7')]45-1/53
Wishvilles Classic
Automobile Library

Centre main bearlng---end clearance
Main
bearings--diametrlcal clearance
Crankshaft-end thrust taken on
Number of camshaft bearings
Type
of c:lmshaft bearings
Fit In piston
Fit In
connecting rod
Crankpln diameter (standard)
Crankpln minimum diameter (or regrInd
Connecting rod-length between centres
Connecting rod-type of bearing
Connecting rod-side clearance
Connecting rod-dlametrlcal clearance
Number of crankshaft bearings ...
Type of main bearings
Standard main Journal diameter
MaIn Journals first regrind diameter
MainJournals second regrind diameter (minimum)
Main
bearings-length
CapaCity
Bore
Stroke
Compression ratio
R.A.C. rating
B.H.P.
Com pression ratio
System of cooling ...
Radiator hose
top
Radiator hose bottom
First oversize bore
Second oversize bore (maximum)
Firing
order
Piston clearance at pressure face below 011 ring
Ring gap
Number of compression rings
Width of compressIon rings
Number of 011 rings
Width of 011 ring
Oil
pressure relief valve operates
all pressure (normal)
Gudgeon pin type
XPEGfTF
1466 c,e. (89,4 cu. in.).
n rnrn, (2,835 tn.],
90 mm. (3'543 in.).
8·3 : I.
12·86 h.p.
63 at
5,000 r.p.m.
DATA
II TF U)
XPAGfTF (to Chassis No. 6500).
XPEG/TF
(from Chassis No. 6501).
Four.
XPAGfTF
1250 c.c, (761 cu. in.)
66·5 mm. (2·618 tn.].
90 mm. (3,5.043 ln.).
8·1 : I.
10·97 h.p.
57 at 5,500 r.p.m.
8
to I.
Thermo-slphon-pump and fan assisted.
Length 4fe- in. (10,95 cm.).
Diameter Irin. (3·8 cm.),
Length 21 in. (5·71 ern.),
Diameter 't in. (2·86 cm.).
+·010 In. (·50 mm.).
+·040 In. (1·00 mrn.),
1-3-4-2.
·0021 In. to ·0029 in. (·056 mm. to ·071 mm.],
-006 In.
to ·010 In. (,152 mm. to ·254 mm.).
Two.
2·25 mm. (·0885 ln.],
One.
4·0 mm. (·1575 ln.]
50
to 70 lb. per sq, In. (3'5 to 5·0 kg./em.!)_
40 to 45 lb. per sq. In. (2'8 to 3·2 kg./em.I) .
Clamped.
·7087 I
t+l)()()i In.
n.
+{K)06 In.
18
+010 mm,
mm.
+OI5mm.
Double thumb press.
Clamped.
I·m In. (45 mm.).
1·722 In. (43·75 rnrn.],
No regrind permissible onXPEG.
7·008 In. (178·mm.).
ShImless. steel-backed. white-metal-iined.
·004 In. to ·006 In. (,10 mm. to ·15 mm.).
·0005 in.
to ·002 In. (,01 rrnrn, to ·056 mrn.}.
Three.
ShImless, steel-backed, whlte-rnetal-Il ned.
HJ.47In. (52 mm.),
2·027In.
(51,.049 mrn.], No regrInd permlss ibleon XPEG.
HI07 In. (50,98 mm.).
Front I·496 in. (38 mrn.],
Centre ,·496 in. (38 mrn.).
Rear 1·575 in. (40 mm.),
·0014 In.
to ·0037 In. (·035 mm. to ·095 mm.),
-0008 In. to -003 In. (-020 mm. to -075mm.).
Centre bearing.
Three.
White metal (front),
Zinc alloy
(rear and centre).
GENERAL
(SERIES
Number of cylinders
ENGINE TYPE
Gudgeon pin diameter
H.G. Midfet.. !uue 3 (H .. E) 93692-5155 19
Wishvilles Classic
Automobile Library