Datsun 1000 - STALL TEST

6 STALL TEST
Aittomatic Tran
mi
ion C
7
SELECTOR
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PIN
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DISHED WASHER
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PIN LEVER
BRACKET
PIN
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SCREW
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SPRING
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The stall test
is
performed
in I
low
2
intermediate
D
drive and R
reverse range
at
full
throttle to check
engine
performance
converter
clutch
operation
or
installation and the
holding ability
of
the
forward
clutch
reverse
clutch and
low
band
NOTE While
perfonning
this test
do
not hoid
the throttle
at
full
op ning
for
more
than ten seconds
at
a time
Prior
to
carrying
out
the tests
bring
the
engine
and
transmission
to
nonnal
operating temperature by
placing
the transmission in
P
park
arid
running
for several
minutes
I
Check the
transmission
oil
engine
oil
and radiator
Top up
where
necessary
2 Chock
all
wheels
and
apply
the
parking
brake
firmly
3 Connect the
tachometer
to the
engine
and moun
t
tre
tachometer where it is
plainly
visible from the driver
5
seat
4 Mark the tachometer
at
1700
rpm
1 100
rpm
on
the dial
5
Apply
the foot
brake and shift
the selector
lever to
I 2 D
and
R
r
ges successively
and
at
ach
range
press
the accelerator
pedal gradually
and note the
engine speed
rpm
When
the accelerator
pedal
is fully
compressed
the
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SPRING BOOT
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DISHED WASHER
engine speed
will become
cons
tan t and
this
speed
is called
the
stall
point
at which the
engine speed
should be
noted
The
speed
should
be
ihe
same
in
all
ranges
and
shoold be
between
1950
and
2000
rpm
NOTE
Having
tested one
range
and
prior
to
testing
the
next
range place
the transmission in Nand nm at
approximately
1200
rpm for
one or two minutes to
cool
the
torque
converter oil
6
If
the
stall
point
is the
same
in each
range
but
below the
specified
rpm
the
following
defects
may
be
present
a
The
engine output
is
inadequate
Check the
throttle valve in the
carburettor for
full throttle
opening
in
relation to
accelerator
pedal
movement b The stator one
way
clutch
may
be
slipping
in the
converter
7 When
the
stall
point
exceeds the
specified
figure
band
or clutch
slippage
is
apparent depending
on the
range
selected
8 Excessive
engine
speed
in I 2
and
D
indicate
that
the rear clutch is
slipping
9 Excessive
engine speed
in 2 and
D and normal
rpm
in 1
the one
way
clutch is
slipping
10
Excessive
engine speed
in R
only
indicates
that
the
front
clutch or low and
reverse
brake is
slipping
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LEVER
BUSH
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T Co
Gj TBAR
TRUNNION
Exploded
View of the Automatic Gear
Change
linkage
1200 Model
79
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