Datsun 1968-1973 510 Owners Workshop Manual page 123

122
Chapter 7
Propeller
shaft
1 General descnptlon
The drive from
the gearbox 10
the
rear
axle
IS vIa
the
propeller
shaft
which
IS In
fact
a
tube
Due
to
the
variety
of
angles caused by
the up and down
movement
of the
rear
axle
In
relatIon
to
the gearbox unIversal JOInts are
fItted
to
each end of
the shaft
to
convey the drive through the
constantly
varying
angles
To accommodate fore and aft
movement of the
rear
axle due
to
road spnng
or
povver Unit movement
on Its
mountings
a
shdlng
JOint of the reverSe spline type used
Each universal Jomt
comprises
a
centre
spider
four needle
roller bearIng assembhes and
two
yokes
The bearings
are
lubricated and sealed
for
loft dUring manufacture
The
propeller
shaft totted
to
the
P
ckp Ones
521
IS
of the
two
pIece
type
with
a centr support bearing
The
propeller
shaft
assembly
IS
a
relatIVely simple component
and fairly
easy
to
overhaul and repair
2 Propeller shaft
testIng for
wear
wholst
on car
1
To check
for
wear grasp
each
unot
of the unoversal JOint and
With
a twisting
action
determine
whether
there
IS any
play
or
slackness
In
the JOint
ThIS woIl indicate any
wear In
the bearings
Do not be confused by backlash between the
crownwheel and
pinion
2 Try
an
up and down
rOCkIng
movement whIch WIll indIcate
wear
of the thrust faces
on
the spiders
and those inSIde the cups
3 On centre
bearing type propeller shafts check the reslloence
of the rubber by
graspIng
eIther SIde of the bearing and
lifting
up
and down An easy actIon
indicates the rubber has
probably
been contamInated by
001
or
tired through
age
4 Wear
In
the
needle
roller
bearings
IS
characterlsed by
Vibration In
the transmission
clanks
on
taking up the drive
and
10 extreme cases
of lack of lubrication metalliC squeaking
and ultImately grating
and
shrieking
sounds
as
the bearings
break
up
3
Propeller
shaft
removal end
replacement
1 One piece
propeller shaft
Slacken the end
clamps
of the
centre
tube and
pre
oIencer and
move to
the left Chock the
front wheels
Jack
up
the
rear
of the
car
and
support
on fIrmly
based
stands
Remove the left hand
rear
wheel Undo and
remove
the handbrake
rear
cable adjusting nut from the adjuster
and dIsconnect
the left hand
cable from the
handbrake adluster
ThiS
WIll gIVe
suffICIent
100m to remove
the propeller shaft
2
W
th
a
SCriber
or
fole
mark
the
propeller shaft couplong
flanges
at
the
rear so
that they
may
be refItted
In
the
Original
poSition
3 Two
piece
propeller shaft Support
the
weight
of
the
propeller shaft at the
centre undo
and
remove
the
two bolts and
washers that
secure
the
centre
beanng support bracket to
the
crossmember
4 Undo and
remove
the four
nuts
bolts and washers that
secure
the
rear
couplong flanges
5
Place a container under
the
rear
of
the
gearbox to
catch oil
that woll
l S ue
from the end
Carefully lower
the
rear
of the
propeller shaft
draw
rearwards
to
detach
the
sploned end from
the gearbox and loft away from the
underside of the
car
6 RefIttIng the propeller thaft
IS
the
reverse
sequence
to
removal
but the
follOWing
additional points should be noted
a
Ensure thlll the mating marks scratched
on
the
propeller
shaft
and
dIfferential
pInIon
flanges are
Irned up
b TIghten the
compamon
flange bolts to
a
torque wrench
settIng
of 145 195 Ibf ft 2 0 2 7
Kg
fm
c
TIghten
the
centre bearing support
bracket bolts
to a
torque
wrench setting of 11 6 15 9 Ibf ft 1 6 2 2
Kg
f
m
4 UnoversallolnU Inspection
and repair
one
pl
e
typel
1 Before dismantling make
sure
that
a
repair kit
IS
available
otherwise
an exchange
unit must be obtained
2 Mark
all
parts
to ensure that If
they
are
refItted they
are so
In
their Original
posl
tlons
3
Clean away alt
traces
of dirt and grease from the
area
around
the
unrversal
Jomt
4
Remove
the four snap rings from the ournal
assemblv
usmg
a
screwdriver
5 Hold
the
propeller
shaft
and
uSing
a
soft faced hammer
tap
the
Universal
JOint
yoke
so as to remove
the bearing
cups
by
shock
action
6 Remove
all four
bearing
cups
In
the
manner
deSCribed and
then free the propeller shaft from the
spider
7 Thoroughly clean
out
the
yokes
and
journals
8 Check
to see
If the journal
diameter has
worn
In
excess
of
00059
In
015
mm
If
It
has
It must
be renewed The
new
shaft
diameter IS
0
578
In
1147
mm
9 Check the spIder
sea
rings for damage which If evIdent
they
should be renewed
10
Inspect
the sleeve
yoke spline
to gearbox main
shaft
splines
for
wear
If the
backlash
exceeds 0 0197
In
105
mm
the sleeve
yoke
must
be
renewed
11 If VIbratIons from the
propeller shaft have been
experienced
check the
run
out at the
centre
by rotating
on
V
shaped
blocks
and
a
dial mdlcator gauge
at
the
centre
The
run out
must not
exceed 0 0236
In
06
mm
12
To
reassemble
fit
new
all seals and
retainers on
the spider
Journals place the
spIder
on
the
propeller
shaft
yoke
and
assemble the needle rollers
Into
the
bearmg
cups retaining them
WIth
some
thIck grease
13 F ll each bearing
cup about 1 3 full WIth
hIgh melting pOint
grease Also fIll
the
grease holes
In
the
Journal spIder WIth grease
taking
care
that all
air
bubbles
are
elimInated
14 RefIt the
bearing cups
on
the spIder and
tap the bearings
home
so
that
they
lie
squarely In
pOSItion
Secure With the snap
f1ngs
Seven different thiCkness snap flngs
are
avatlable
to
gIVe an
aXIal play
of
0 000 8
In
002 mm
5
UnIVersalJolflts Inspection
and repair two
piece
type
The sequence
baSically Identical
to
that for the
one pIece
type
To overhaul the mIddle unoverSal
JOInt
It
WIll be
necessary
10
part the
two
ha
ves
ThIS
IS
done
by marking
the
two flanges
and then removIng the four
nuts
bolts and spring
washers
6 Centre bearing
removal and
refmm9
two
piece
type
1
Rem e
the
propeller
shaft
assembly
as
deSCribed
In
SectIon
3
2
Part the
two
holes
as
described
In
SectIon 5
3 With
a
scriber
or
fole mark the
relationship of the companoon
flange to
the propeller shaft
4 It WIll
now
be necessary to hold the compamon
flange
In
a
vice or
wrench USing
a
socket
wrench
undo and
remove
the
retaining
nut
and
plain
washer ThIS
nut
woIl be very tIght
see
paragraph Sa
5 USing
a
soft
metal drift
or a
puller
remove
the
centre
bearing
assembly
6
Check
the
centre
bearing by rotating the
race
If
It
feels
rough
or IS nOIsy It
must be
dIscarded
Also
check
the
Inner
track
for rock whIch
Ideally should
not
be evIdent
7 Before fItting
a rear
bearing assembly check that
It
compares
exactly With the old
one
removed It
IS
not
necessary
to
lubricate
the bearing as
It
IS
aled dUring manufacture
8 Reassembly and refitting
IS
the
reverse sequence
to
removal
but
the follOWing addItIonal
points should be noted