Datsun BLUEBlRD P 410 Series User Manual

Remove the
splIt pms
flat washers and
sprmg
washers from each
end of the
shaft
Shde the rockers
brackets and
sprmgs
from the shaft
Unscrew the
plug
from
the end of
the shaft and clean out
the 011
way
The
two end rockers
may
be
dIsmantled WIthout
the whole rocker
assembly
bemg dr
awn
out ThIS
may
be achlVed
by turnmg
the
engme by
hand
untIl No I
push
rod
reacher ItS lowest
pOSItlOn
Unlock the
tappet
adjustrng
screw
and
screw
It back as far as
It wIll
go
WIthdraw
the
splIt pm
flat and
sprIng
washers and slIde the
rocker
off
the
shaft
SometImes
the valve
sprIng
WIll have
to be
slIghtly
compressed by leverIng
a
screwdrIver under No 2
rocker thus
allowing
the end rocker
to slIde off the
shaft
easIly Repeat
the
procedure
for No 8 rocker
Reassembling
the Rocker
On
reassembly tIghten
the
pedestal
bracket
securmg
nuts a
lIttle at a
tIme
worlang
dIagonally
from nut to nut
left nut of No
I
pedestal
bracket
rIght
nut
of No 2 left of No 3
and
so
on
returnmg
from
the
left
nut of No
4
bracket and
repeatmg
the
process
untIl
they
are all
tight
If the
rocker
assembly
has
been
completely strIpped
down
and rebushed the 011 holes
wIll have to be redrIlled
and
the bushes reamed down
to size before
assembly
on the shaft
h
The rockers
and
sprIng
must be
replaced
m theIr
orIgmal posltlOn
On
the
ends of the shaft
Remember to
replace
the rocker shaft
locatmg
screw
and
lock
plate
Replace
the
sprIng
and flat washers
WIth the
splIt pms
on the
ends of the
shaft
Replace
the rocker cover and
gasket
The
vent
pipe
should be at the
front
of
the
engme
Secure
the cover
by
means
of
the
tWo
cap
nuts
ensurIng
that the rubber bushed and
engme lIftmg plates
are
m
poSItIon
If the
rocker
cover
gasket
or
the rubber bushes are found
to be
faulty they
must
be
renewed
otherwIse 011 leaks
WIll result
Jt
Push Rod Removal
If the valve rocker
assembly
has
already
been
removed all that remains
IS
for the
push
rods
to be lIfted
out
They may
on
the
other hand be taken out
WIth
out
detachmg
the rocker
assembly
it
y
Remove the aIr claner and rocker cover
Slacken all the
tappet adjustmg
screws
to theIr
full
extent
then
usmg
a
screwdrIver WIth the
rocker shaft
as a
fulcrum
depress
the valve
sprmg
slIde
the rocker SIde
ways
and lIft
out the pus
r
od
All but the end
push
rods can be WIthdrawn m
thIS
way
These
w1l1 have to
be wIthdrawn
after the removal of the two end rockers from
the shaft When re
placmg
push
rods ensure that the ball ends
regIster
m the
tappet cups
From
here onwards
reassembly
IS a
straIght
forward
reversal of the
dlsmantlmg
process
A
djusti ng
Valve Rocker Clearances
Remove
the
aIr
cleaner and rocker cover
There should be a clearance of 0 014 m 0 3S
mm between the face of the
rocker and the base of the valve
stem
WhIlst
checkmg
the clearances
It
IS Im
portant
to mamtam
pressure
WIth
a
screw drIver on the
tappet adjustmg
screw
18

Datsun BLUEBlRD P 410 Series Specifications

General

Brand	Datsun
Model	BLUEBlRD P 410 Series
Category	Automobile
Language	English