MG TF Series User Manual

Seetion K.7
TO DISMANTLE THE SWIVEL PINS
Unscrew the upper and lower links from the ends of
the swivel pins. The left-hand swivel pin has a
left-hand thread at each end.
The stub axle is located by a collar on the swivel
pin
and the stem of the steering lever engaging a
groove in the pin. To separate the two the steering
lever must be withdrawn from the stub axle. but this
procedure is not advised unless absolutely necessary.
Seedon K.8
EXAMINATION OF FRONT SUSPENSION
PARTS FOR WEAR
The following parts should be examined before
reassembly ;-
Bushes (or bottom wishbone
If
these are split or peris h ed, eccentri c, or oil-soaked,
they should be renewed. A bush in new condition
should have the dimensions given in Fig. K.IO.
Bottom wishbone
Examine the end holes for elongation and the
assembly for looseness. If there is any sign of slack-
ness between the wishbone arms and the pan, separate
the com ponents an d check the holt holes for elongation.
The bolt holes are *in. (8·33 mm.) dia.
Coil spring
Examine for cracks and check for tension. if neces-
sary.
to details below. Renew the springs if they are
defective.
Free length 9·59 in. ± -n- in.
Loaded
to 1.095 It>. (-196'7 kg.) 6·-1-1 in. ± -h'1 n.
Swivel
link assemblies
Check the swivel links. The dimension across the
thrust faces should be 2·327 in. ±.QO 15 in. (59'1 I mm.±
·04 mm.). If these are appreciably worn the assembly
of link and bush should be renewed. If the bush only
is worn. a new one should be pressed in and reamed
and burnished to ·750 in.±·QOO5 In. (19,05 mm.±·OI
mm.).
Note.-When pressing in this bush see that the hole
In the bush faces the threaded bore. (See Fig. KA.)
Check the threaded bores on the swivel pins. When
new. these are a free turning fit without slack. An
appreciable amount of slack is permissible in these
threaded bearings and they do not require renewal
unless they are very slack.
THE FRONT SUSPENSION K
Check the fulcrum pin distance tubes for scoring or
wear. These should be 2·337 in.±·OOI5 in. (59,36 mm.±
·04 mm.) long by ·7-185/-7-180 in. (19,01 mm./19·OQ mm.)
diameter.
Examine the case-hardened thrust washers for
ridges; the faces should be flat and parallel within
·0005 in. ('01 mrn.),
The thickness should be ·068 In./,066 in. (1,73 mrn.j
1·68 rnrn.), the bore ·510 In.I·505 in. (12'95 mrn.j
12·83 rnrn.) and the outside dia. 1-25 in. (3 I·75 mm.).
When the swivel links, distance tubes and thrust
washers are assembled, the total end clearance be-
tween the link and the thrust washers should be
·008 in. to ·013 in. (,2 mm. to ·33 mm.). (See" A,"
Fig. KA.)
Check that all grease nipples are clear.
Examine the rubber seals. and if these are perished
or spilt. renew them.
Section K.9
HUB BALL BEARINGS
As far as possible. bearings which come under
review during the overhaul of the car should be
cleaned and inspected without being withdrawn from
the housings to which they are fitted. Unnecessary
withdrawal causes deterioration of the fitting surfaces,
and may
damage the bearing. whereas if bearings are
examined in position and found still to be serviceable,
they can be left undisturbed with advantage.
Rust on the exterior surfaces of the bearing is not
detrimental unless the fit Is affected, but if the tracks,
balls or rollers are severely pitted, the running life of
the bearing is at an end and a new one should be fitted.
Ball bearings should be cleaned thoroughly with
paraffin. Bearings which have been washed in this
manner should be rinsed thoroughly and dried. and
should be immersed in mineral oil as soon as possible
after they have been examined.
After cleaning. bearings should be examined for
cracks in the races. chipped or broken balls. and worn
or damaged tracks or cages.
If
either race is cracked or chipped, or if the tracks
have spalled or flaked. the bearing should be scrapped.
section K.IO
REPLACING THE FRONT SUSPENSION
Bolt up the coil spring top locating plates inside the
front cross-member.
Bolt on the hydraulic dampers.
K.5
Wishvilles Classic
Automobile Library

MG TF Series Specifications

General

Brand	MG
Model	TF Series
Category	Automobile
Language	English