MG Midget J1 1933 Instruction Manual page 36

Correctly adjusted, the follower unit should be a frce sliding fit in the
centre portion of the track to ensure a free passage of oil between the surfaces,
but only a minimum of sideplay should he permitted. T o o close a
fit
will
result in a stiff steering. This point determined, i t now only remains to re-
place the follower unit through the rocker shaft and into the track. This is
most 'easily done
n
ith the rocker shaft over in the extreme lock position, as
the track is purposely made slightly wider at these points.
A
little care should
be exercised here, and the hemispheres may with advantag'e be slightly tilted
in their seatings to give a lead-in effect when entering the track.
A
slight to
and fro movement of the steering wheel in conjunction with a light pressure
o n the back of the follower facilitates this assembly.
W h e n inserting a new set of hemisph'eres see that they are quit'e clean
and free from grit before inserting them into the follower.
A
smsear of thick
grease in the seatings will check any t'endency for them to fall out.
T h e cover plate and its shims should nmext he replaced, taking care to
remake the oil joint properly, and the g,ear fill,ed u p with fresh oil.
General Notes. T h e shims between the cover plate (shown in Illustration
No.
23)
and the hox should not be removed. They are intended for initial
assembly only.
A
certain amount of end play is called for, and is desirable
in th'e rocker shaft, and no attempt should be made to take up this by re-
moving the shims.
Should the thrust bearings he, for any reason, taken off the shaft, care
should be taken to replace them the right way round. T h e right way round
is when the word ' thrust
' stamped in o n e side of the inner r m e of the
bearing is up against the end of the cam.
Fitting Drop Arm to Rocker Shaft. Should i t be necessary to remov~e the
d r o p arm from the rocker shaft at any time, we recommend that before doing
this, both these items should be marked so that the) can be fitted together
again afterwards in the same relative position.
In case this marking has been omitted o r in case the marking has become
obliterated, we give below the correct method of fixing this, and we would
draw attention to this matter, nhich is of some importance. Should this
operation not be properly carried out, almost certainly the available lock will
be limited in one direction o r the other, and damage may result to the internal
mechanism of the gear.
T h e steering column, complete with steering box, but without the
d r o p a r m attached, should (if i t has been removed) first be fitted in place
in the car, taking care to tighten u p all fixings holding the unit to the car,
including that on the dashboard, the steering wheel being placed in rrs
final position.
Nest, the lower cnd of the d r o p arm carrqing the ball pin ahould be
fixed correctly to the drag link, but the top end should not yet be con-
nected to the rocker shaft of the steering box.
Now jack up the front wheels and place them approximately in the
straight ahead position.
If the steering wheel is rotated gently, you will find that its move-
ment is limited by internal stops in the steering box at each end of the
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