THE
AUTOMATIC TRANSMISSION
Fa
(24) Apply the
hand
and
foot brakes, select any gear
position except
'N'
or
1,
apply maximum throttle
for
not
more
than
10
seconds
and
note the
tacho~
meter reading. Compare the figure obtained with
the chart below.
Model
R.P.M.
Condition
Rectification
848 c.c. 1,300-1,400 Satisfactory
Nil
998
C.c.
1,400-1,500 Satisfactory Nil
{
Under
1,000
Stator
free wheel Change torque
slip
converter
Over 1,500 Transmission slip
Check transmis-
848 c.c.
si
on
unit (see
and
Road
Test note)
998
c.c.
Under
1,300 Engine down for Check engine
power
(25) Disconnect the tachometer.
L-
~----j=~
Fig. Fa.6
Removing the valve block and servo bolts
•
Fig. Fa.5
Checking the pressures and the stall speed with
Service tool18G 677 andadaptor 18G 677 C (arrowed)
NOTE.-8hould
the approximate pressures given •
above not be obtainable, see Section Fa.1,
'FAULT
.
DIAGNOSIS'.
(29) Remove the pressure test equipment
and
refit the
plug.
Section Fa.3
TRANSMISSION
UNIT
Dismantling
(1) Remove the engine
and
transmission from the car,
see Section Aa.3.
(2a) Remove the transmission from the engine as
detailed
in
Section
AaA
only
if
fitting a replacement
engine, transmission case,
or
if
it
is necessary
to
remove the main oil strainer pick-up pipe
and
seals.
(2b) Remove
the
converter
and
converter housing as •
detailed
in
Section AaA, items (1)
to
(11)
and
(13).
Pressure check
(26) Check
and
top
up the oil level (see Section
Aa.!).
(27) Remove the pressure point plug
on
the engine oil
filter, fit Service tool
adaptor
180
677 C,
and
connect Service tool
180677
Z (see Fig. Fa.
5)
or
use pressure gauge (Service tool
170
502 A with
pipe
and
adaptor
180
502 K).
(28) Start
and
run
the engine until the oil temperature is
80
0
C. (176
0
F.) (check with a thermometer in-
serted into the dipstick hole). Re-start
and
run
the
engine
at
1000 Lp.m.
and
check the following
approximate pressures:
Ca)
In
all gear positions except
'R'
a pressure
of
between
75
and
85 Ib./sq. in. (5,3
and
6
kg.fcm.
2
)
should register
on
the gauge.
(b)
In
'R'
the pressure should be between 115
and
125
Ib./sq. in.
(8
and
8·8 kg.jcm.
2
).
Fa.I8
Fig. Fa.7
Removing the valve block
and
servo unit as an assembly
MINI.
Issue 2. 16495
•
mk1-performance-conversions.co.uk
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