Datsun 1600 - FOUR SPEED GEARBOX PROCEDURES

TO ADJUST
I
Check that the tranSmISSIOn IS In
neutral
2
Note
that
the
control rod levers are marked with a
groove on
theu
top
edge
and the
control
rod
lower
support
Manual TransmissiQn
IO
bracket wIth a
ridge
When
correctly
adJusted
In
the
neutral
poSI
tlon
all three marks will be
aligned
3
If
adJustment
IS
reqUired
lengthen
or
shorten
the
gear
change
rods as
necessary
at the
adJustmg
nuts located
above and
below the trunmons
PART
2
OUR
SPEED
TJlANSMISSJON
I DESCRIPTU X
The four
speed gearbox
has
synchromesh on all
forward
gears
The
gears
are
hehcal
cut and run
In constant
mesh With
the
laygear
The reverse Idler shaft
IS
fi
tted
WIth
an Idler
gear
In
constant mesh With and
drIVIng
off the
laygear
An
additIonal Idler
gear sphned
to
the
opposite
end of
the
Idler
shaft IS
engaged
by
the
reverse
shdmg
gear
for
reverse
operatIOn
Needle roller
beanngs
are used
to mount
the
laygear
to
the
layshaft
wluch
IS
supported
at
both
ends
by
the
gearbox
casing
Laygear
end
float
IS
adJusted by
thrust
washers
wIDch
can
be
obtained
10
different
thicknesses for tlus
purpose
The mamshaft
assembly
IS
supported
In ball
beanngs
located at each end of the
gearcase
Selecl1ve
fit
clfchps
are
aVailable
In
different thicknesses
for
adJustment
of
malnshaft
and
gear
end float
Needle
roller
beanngs
are
Interposed
between
the
1ST
2ND SHIFT
ADO AND
FORK
p
maInshaft and
first
second
and
third
gears
A needle roller
bearing
located In
the
end of
the
Input
shaft
supports
the
spigot
end
of
the main
shaft
Two
types
of
synchromser
are
used
dependmg
upon
the
model On all
except
the
sports
sedan
the
Borg
Warner
type
baulk
nng
and cone
are
standard
eqUipment
On
the
sports
sedan
a Servo
type
synchromser
IS
employed
the
components
of
wIDch are
mounted
duectly
on the
clutch
gear
wIDch IS
pressed
onto
the
malnshaft
gear
When
dismantlIng
Servo
type synchromsers
It should be
particularly
noted
that
the thrust
and anchor blocks for
1st
gear
synchronlSlng
differ from that
of
the other
three
gears
and therefore
must not be
Interchanged
The
gear change
IS
the
floor shift
type
mounted
wrectly
on the extensIOn
hOUSing
Gear
shift movement
IS
transferred
through
a
stnkmg
rod to
gates
located on the
sluft
rods wluch
In
turn
pass
the
movement to shift
forks
for
gear selectIOn
3RD 4TM
SHIFT
ROD AND FORK
lAYGEAR
View of Gearbox With Cover Plate Removed
89
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