MG TF Series User Manual

---------TIIE BRAKING SYSTEM M
After riveting the new brake linings to the brake-
shoes It is essential enat any high spots should be
removed before replacement on the back plate
assembly.
When new shoes and linings are fitted It must be
appreciated that considerable adjustment has to be
made
to the foot brake mechanism, and it is necessary
to return the .. Micram" adjusters to their fully
anti-clockwise position
before attempting to refit the
brake-drums over the new linings. The hand brake
must also be in the fully released position.
Important.-Do not use any substitute for Genuine
Brake Fluid, as a substitute will seriously affect the
working of the system. In extremely cold conditions
use Wagner No. 21 Fluid.
Do
not allow grease, paint, oil or brake fluid to
come In contact with the brake linings.
Do
not clean the rubber parts with any fluid other
than Lockheed hydraulic brake fluid. All traces of
petrol (gasoline), paraffin (kerosene), eec., used for
cleaning
metal parts must be removed before
reassembly.
Do
not reline the brake-shoes with different types
of linings, as this is bound to cause unequal braking.
Do
not allow the fluid in the master cylinder and
supply
tank assembly to fall below the half-full mark.
When full the fluid should be level with the bottom of
the filler neck, with the brakes in the" off" position.
Seedon M.I6
THE BRAKE FLUID
The only correct fluid for replenishment of the
hydraulic brake system is Lockheed Genuine Brake
Fluid.
In cases
of difficulty in obtaining Lockheed Genuine
Brake Fluid use must be made of a fluid conforming to
S.A.E. spectflcatlon 70.R2.
In
eases of extreme cold consistently below 0
0
Fahrenheit or _18
0
Centigrade, Wagner No. 21
Fluid should be used either for topping up or refilling
the system.
Seetlon M.17
THE HAND BRAKE
The hand brake is of the quick-release type, the
ratchet knob being depressed after the lever has been
pulled up. A slight
upward pull on the lever will allow
it
to move to the" off" position without depressing
the ratchet knob.
It
operates the rear brakes by means of cables, and
no
adjustment is necessary. as adjustment of the
hydraulic brake automatically adjusts the hand brake.
If
the two brass nuts on the lever are moved
the whole braking system will be upset.
M.G. Midget. Issue 3 (H & E) 82966-1 54
Sufficient movement Is allowed at the lever to deal
with full wear at the linings.
If
the wheel cylinder operating cables have been
disconnected. they should be readjusted after re-
assembly in
the following manner :-
Return the hand brake pull lever to the fully
released position.
Remove
the split pin and clevis pin retaining the
brake cable to each wheel cylinder lever.
Adjust the brake-shoes as in Section M.2.
Screw up the cable adjusting nuts by equal amounts
until the cable clevis pins will fall Into position in the
cable forks without moving the wheel cylinder lever.
Replace
the split pins.
Seedon M.IO
REAR BRAKE PIPES
Cases have been reported where the rear brake
pipes lying along the axle rub against the rear axle
strap, or, in the case of Mk. II competition cars, against
the shock absorber arms. The pipes are adequately
clipped, and care should be taken to see that the pipe
Is
set to give at least I in. (l·S em.) clearance at these
points.
Seetion RI9
BRAKING IRREGULARITIES AND
THEIR CAUSES
Pedal travel excessive (reqUires pumping)
(a) Brake-shoes require adjusting.
(b) Leak at one or more [olnts.
(c)
Master cylinder cup worn.
Pedal (eels springy
(a) System requires bleeding.
(b) Linings not" bedded In."
(c) Master cylinder fiXing loose.
(d) Master cylinder cup worn.
Brakes inefficient
(a) Shoes not correctly adjusted.
(b) Linings not" bedded In."
(e)
linings greasy.
(d) Linings wrong quality.
(e)
Drums badly scored.
(f) Linings badly worn.
(g) Wrongly fitted cup fillers.
Brakes drag
(a) Shoes Incorrectly adjusted.
(b) Shoe springs weak or broken.
(c) Pedal spring weak or broken.
(d) Hand brake mechanism seized.
(e)
Wheel cylinder piston seized.
(f) Locked pipe line.
(g) Filler cap vent choked.
M.13
Wishvilles Classic
Automobile Library

MG TF Series Specifications

General

Brand	MG
Model	TF Series
Category	Automobile
Language	English