MG TD Series User Manual

M THE BRAKING SYSTEM-- __
Examine all the rubber parts for damage or dIstor-
tion. It is usually advisable to renew the rubbers
when rebuilding the cylinder.
Dip all
the internal parts in brake fluid and assemble
them wet.
Stretch the secondary cup over the end flange of
the piston with the lip of the cup facing towards the
opposite end of the piston. When the cup Is in Its
groove, work It round gently with the fingers to make
sure it Is correctly seated.
fit the valve washer. valve cup and body onto the
return spring and Insert the spring valve first into the
cylinder. See that the spring retainer is in position.
Insert
the master cup, lip first, taking care not to
damage or turn back the lip, and press it down onto
the spring retainer. Place the dished washer in place
on
the end of the master cup with its concave face in
contact with the cup. It is Imperative that this
washer should be fitted in all cases.
Insert the piston. taking care not to damage or
tu rn back the lip of the secondary cu p.
Push
the piston down the bore slightly, and insert
the retaining cirdlp In the groove In the cylinder bore.
Test the master cylinder by filling the tank and by
pushing
the piston down the bore and allowlng It to
return: after one or two applications fluid should
flow from the outlet.
Seetlon M.'7
REPLACING THE MASTER CYLINDER
The replacement procedure Is the reverse of the
removal instructions given in Section M.4 with the
follOWing additions :-
R.eplace the main feed pipe in its correct position
and fully
tighten the union before replacing the
master cylinder in its houslng.
Ch
eck the shoe adjustm ent as detailed in Section M.2.
Connect the fluid pipes and bleed the system as in
Section
M.3.
Check the system for leaks with the brakes fully
applied. Renew
the copper washers on the two-way
outlet connection If necessary.
Section M.8
BRAKE ASSEMBLY
Two leading shoes are incorporated in the front
wheel braking system and take the greater percentage
of the braking load. The rear brakes are of the
leading and trailing shoe type. giving the advantage of
equal braking action
when the brakes are used in
reverse.
All the shoes have a floating anchorage. each front
shoe utilising the closed end of the other shoe
actuating cylinder as its abutment. The two rear
shoes share one common abutment stop.
The hand brake lever operates the rear brakes
mechanically through a linkage operating on the
piston of the rear wheel cylinder which is made in two
halves. The outer half ofthe piston applies the leading
shoes when actuated by a lever pivoted in the cylinder
body. The trailing shoe Is applied by the movement
of the cylinder body which slides on the brake plate
as a result ofthe reaction ofthe mechanically operated
lever on the pivot.
When operated hydraUlically the inner half of the
piston is forced outwards. carrying with it the outer
half. thus applying the leading shoe. and the trailing
shoe Is applied by the floating cylinder body as a result
of the reaction of the fluid pressure on the body.
Piston
and
dust
cover
Piston Seal
(hydraulic)
Piston
cup
Cup
filler
Pivot
*-----pin
Hand
"" .... brake
lever
Rear wheel
cylinder
Piston and
dust rover
~. '.'
f
CUp
filler
Front wheel
cylinder
Fig. M.II.
The front and rear wheel cylinder components.
Later models
are fitted with spiral sprlnv engaging
a spIgot In the centre of the (UP filler as shown.
PIston
(UP
M.B
M.G. Midget. Issue 3 (H & E) 82966-1/54
Wishvilles Classic
Automobile Library

MG TD Series Specifications

General

Brand	MG
Model	TD Series
Category	Automobile
Language	English