Datsun 1000 - FOUR SPEED TRANSMISSION

8 Manu l Tran
lfliuion
CIRCLlP
f
WASHER
rl
BUSH
INSERT
j8
Ji
0
PIN f
J
I
r
SPRI G
L
of
GEAR C
ANGE LEVER
e cLlP
CONTROL
ROD
1ST
AND REVERSE LEVER
RETAINER
l
CLAMP BRACKET
3Jfl
1
iif
Y
SADDLE
BOLT
I B
ARING BOSS
AND
SUPPORT
it
2ND AND TOP LEVER
PIN
Y
t
BOLT
Q
RpAINER
Iumn
Contro
Gear
al1ge
Comp9nents
5
Remove the
screws
attaching
the rubber dust
seal
to the floor boards
and
work
the
seal
up
the
column
6
Working
at the
steering
box disconnect both
gear
change
rods from the control
rod
levers
7 Remove
the
two set bolts
from the bracket
retaining
the lever
assembly
to
the
steering
column
Move
the control
rod
assembly
down
the
column
to facilitate
rerpoval
of the
spring
swivel
pin
and bush from
the
upper
end
of
the
control
rod
9 Ease the
control
assembly
down
and out from the
vehicle
working
the
rod
through
the rubber dust seal
Jnstallation
is a
reversal of
the
remava
procedure
TO DISMANTLE
AM
ASSEMBLE
I Remove the set bolt
retaining
the s dd1e to the
co
trol rod
lever
bearing
boss nd
remove
the
saddle
2
From the end of the
control
rod
remove the
groove
retainer
op rating
lever and be rin
g
boss
3 Extract
the
pin
from
the
hole in
tIie
control rod
and
remoVe the
remaining
operating
lever
llnd grooved
retainer
4
Clean all
components
and examine
tlje bearing
bushes
for
wear Re
e V al1Y components
which are worn or
damaged
Lubricate
components during assembly
Assembly
is
a reversal of the
dismantling
procedure
TQ
ADJUST GEAR
CHANGE RODS
I
Ch
ck that the
tra smission is
in neutral
2
l
pte
that the control rod
operating
levers are
marked
with a
groove
on their
top
edge
and
the
bearit g
boss
with
a
ridge
When
correctly adjusted
in
the neutral
position
all
three marks will be
aligned
3
If
adjustment
is
required lengthen
or
shorten the
gear
ch
ge
rods as
necessary at
the
adjustihg
nu
s
locateq
above
and
below the
trunnions
PAnT
F tlJR
SPEED
T
ANSMISSION
I
GEARBOX
DESCRIPTION
The
four
speed
gearbox
has
synchromesh on
all
forward
speeds
The
gears
are helical
cut
a
d run in
constant
mesh
with the
laygear
TjIe
laygear qperates
o
two ball
type
bearings
which
locate in the carrier
plate
and
gearbox
casi
g
Laygear
end
f1qat
is
adjusted
by
a
washer which can be obtairied
in
different
thi9ki1
sses for this
purpose
M
insh
ft
laygear
reverse
gear
and reverse
sliding
and
idler
gears
are attached
to
the
carrier
plate
which is
interposed
between the
gear
case and rear extension
All mairishaft forward
gears
run on needle
roller
bearings
A
needle roller
bearing
is also used
to mount the
inpu sjIaft
to the mainshaft
Reverse
gear
is
splined
to the mainshaft
and
secured
by
a
circlip
The reverse idler
gear
is
plinecl
to the
laygear
and
cured
by
a
circlip
A
reverse
sliding
gear
operat
d
by
the
selector fork meshes with both reverse
gear
and idler when
reverse
is
selectecl
All
components
of the revers
gear
assembly
are
locaied
at the rear face of the
carrier
plale
The
floor
type gear change
is
spring
loadeq
to
prevent
accidental election of reverse
gear
64
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