MG MGB User Manual

THE
AUTOMATIC GEARBOX
Fd
Fig.
Fd.17
The
upper
valve
body
4. 2—3shift valve.
5.
2—3valve plunger.
6. 2—3valve
spring.
1.
1—2
shift valve.
2.
1—2valve plunger.
3. 172
valve spring.
Reassembling
31. Reverse the
dismantling
procedure
in 7
to
26,
noting
the
following
points:
a.
Lubricate
all the
components
with
an
approved
automatic transmission
■uid.
b. Check
that
all the
valves
move
freely
in
their
bores.
c.
Ensure that the
upper
and lower
valve
bodies
and
the
separating
plate
are
correctly aligned
before
■tting
and tightening
all the
screws.
(1. Tighten the
screws
evenly
to
the
torque
figures
given
in
‘GENERAL
DATA’.
Refitting
32.
Reverse the
removing
procedure
in l
to
6,
noting
the
following
points:
a.
Ensure that the
pump pressure
and
converter
tubes
are
correctly located.
b. Re■ll
the.
transmission
with
one
.of the
recommended
automatic transmission
■uids.
Section
Fd.14
FRONT
SERVO
Removing
1.
Drain
the
gearbox,
unscrew
the oil
pan
retaining
.
screws
and
remove
the
pan.
2.
Withdraw
the
tubes
connecting
the front
servo
to
the
valve
bodies.
3.
Unscrew
the
two
servo
securing
bolts,
lift
out
the
servo
and
remove
the
strut
from
the
operating
lever.
Dismantling
4.
Remove
the
snap-ring
retaining
the
piston.
MGB.
Issue 1.
15676
U!
Withdraw the
piston
sleeve,
piston
and
piston
ring.
Remove the
piston
from
its
sleeve.
7.
If
necessary,
the
lever
pivot
can
be pressed
from
the
servo
body and the lever
removed.
9‘
Inspection
8.
Examine
the ‘0’
rings
and oil sealing
ring
for
signs
of
deterioration
or
damage;
renew
the
rings
as necessary.
9.
Examine
the
piston,
sleeve and body bore
for cracks,
scratches and
wear.
Reassembling
10.
Reverse the dismantling
procedure
in 4
to
7 ensuring
that the
piston
and lever
move
freely.
Refitting
ll.
Reverse
the
removing
procedure
in l
to
3, noting
the
following
points:
a.
To assist
re■tting, petroleum
jelly
may
be used
to
stick the
strut to
the lever.
b.
After re■tting, adjust the
front brake band
as
described
in
Section
Fd.8,
12
to
17.
Section
Fd.]S
REAR
SERVO
Removing
1.
Drain the gearbox,
unscrew
the oil
pan
retaining
screws
and
remove
the
pan.
2.
Withdraw the
rear servo, rear
clutch and front
servo
apply
tubes.
3.
Remove
the
two
rear servo
securing
bolts,
noting
that
the
front
bolt
is
dowelled for the
centre support
location.
4.
Lift
out
the
servo
assembly and
remove
the
strut
from
the
operating
lever.
l
2
‘Q
Anew
Fig.
Fd.18
The front
servo
1.
Body.
7.
Oil sealingring.
2.
Lever.‘
8. ‘0’ ring.
3.
Lever
pivot pin. 9.
Snap—ring.
4. Piston. 10.
Spring.
.
5.
‘0’ ring. 11.
Adjusting
screw.
6. Sleeve.
12. Locking
nut.
Fd.21

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English