Datsun 1000 Workshop Manual page 68

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f
t
J2
Manual
T
aris
is ion
TO CLEAN AND
INSPECT
l Clean all
components
in
cleaning solvent
and
blow
dry
with
compressed
air
Check ball
bearings
for
roughness
or
excessive side
play Do
not
rotate the
bearings
at
high speed
with
compressed
air particularly when thebearings
are
dry
or
damage
will result
3 Check needle roller
bearings
for
wear
imd
or
pitting
4 Examine the teeth
on
all
gears
for
wear
and
or
pitting
also for
burring
on
the teeth
ends
5 Check
the synchronising
teeth
on
the
ge
ars
for
wear
or
chipping
6 Check the baulk
rings
on
their
corresponding
gear
cones
for
wear see
specific
tions
7
Check ihe
selector forks
for
wear
the selector
detent
balls for
wear
and the detent
springs
for breakage
or
loss of
tensjon
see
specifications
8 Renew all
worn or
damaged
components as
necessary
TO ASSEMBLE
I
Ir stal second
gea
nd
ne
le roller bearing
on
the
mainshaft
with the
gear
cone
facing to
the
rear
of
the shaft
2 Position the baulk
ring
on
the gear
cone
3 If the
synchro
hub has
een
dismantl
ed
instal the
syrichrci plates
in
ihel
ub slots and slide the
sleeve
over
the
hub splines
so
thaI the marks made
on
dismantliitg
are
at
the
same
side
SH
FT PLATES
Ex loded View
ofSvnchrolii
r
omponents
4h
II
4 Fit the
synchro spring under the synchru plate
lugs at
each side
to
tension the
plates
NOTE The svnchrn
springs
must
be
installed
so
thal when
viewed
from
one
side thev travel in
opposite directions
5 Instal
the
synchro hub assembly
on
themainshaft
engaging
the ends of the
synchro plates in the
notches of
the baulk
ring
and the
hub splines
on
the mainshaft
splines
6
Lubricate and instal the mainshaft bush
needle
roller
bearing and spacer
for first
gear
7
Engage the not
hes
of
a
baulk
ring
on
the
synchro
hub
plate ends
and instal the first
gear
entering
the
cone
into
the baulk
ring
8 Instal
the
thrust washer and press the
rear
bearing
onto the mainshaft
9
For the
purpose
of
checking
first
gear to
thrust
washer end float instal the
reverse
gear
and
secure
with the
circlip
Check the end float between first
gear and
thrust
w
h
er
also between second gear and the mainshaft
flange
See specifications
for end float Clearance
NOTE
If
end
float
exceeds the limit
renew
the thrust
washer
and
re
check
l0 Remove
reverse
gear and
Circlip
on
completion of
9
11
Lubricat and instal third gear
complete with
needle
roller
bearing to
the front of the
mainshaft
with gear
cone
facing
forwaro
12 Instal a baulk
ring
to the
th
rd
gear
cone
13
If
dismantled
assemble the
synchro
hub
as
previously
described
4 Position the synchro
hub
assembly
on
the
mainshaft SQ
that the
synchro plate
ends
engage
the baulk
ring
notches and the hub
splines
engage
the
mainshaft
splines
5
lnstalthe
ball
bearing
in the mainshaft
recess
grease
both faces of the thrust
washer
and instal
so
that
the
oil gronve
side of the washer abuts
the
synchro hub
Locate
the
notch in
the tliIust
washer over
the ball
bearing
16 Position the
remaining baulk ring
so
that the
synchro plate
ends engage
the baulk
ring
notches
17 Lubricate
and iris tal
the needle roller bearing
on
the
mainshaft
spigot
18
If
the
input
shaft has been dismantled
press
on
the
bearing and
secure
with the
washer
and circlip
19 Position the
input
shaft
on
the
mainshaft
needle
roller
bearing
and
eri
gage the gear
cone
in the baulk
ring
Mainshaft
assembly
is
ow
completed ready for installation
NOTE Before
installation
of
the
laygear
and
mainshaft
assemblies to
the
carrier platdi Will
be
neces sary
to
check
the
laygear end float
This is essential
particularly if
any
parts
of the assemb
v
have
beei renewed
As in the
three speed gearbox the
end
float figure
is
nomul
v
found
bv
use
of
a
special
tool
for this purpose
68