Datsun 1200 1971 Workshop Repair Manual page 97

Transmission
Worn gears
shaft
and
or
heanng
Repl
ll c
In ufficlcnt operatmg
stroke due
to
worn or
loose
shdmg pdll
Repair
or
replal
c
Defective
or
damaged synchronIzer
Replace
Gear
slips
out
of mesh
In the most cases
thiS trouble
occurs
when the Interlock
plunger
check ball and
or
spnng
IS worn or
weakened
or
when the control
system IS
defectIve In thiS
Cd
the trouble
cannot
be
corrected by repldtlllg
gt
drs
and
therefore
trouble shootmg
must
be earned
out carefully
It should also be noted that gear
slips out
of mesh due
to
vlbralIon
generated by
weakened front and
rear
engme
mounts
Worn
mterlock
plunger
Replal
c
Worn check hall and
or
weakened
or
broken sprmg
Replal
c
Worn fork rod ball groove
RepI
H
e
Worn
or
damaged beanng
Repldce
Worn
or
damaged
gear
Repldl c
NOise
When nOIse
occurs unoer
engine
Idling
and
stops
whde the clutch
IS
dl s eng l g ed
or when
nOI Olcurs
while shlftmg
gears It may
Judged
that the
nOIse
IS
from the
t r a nSml l l S I U n
Ino
ufllclenl
or
1mproper lubncant
Add od
or
replace
With
deSignated
oIl
Ollleaklllg
due
to
defectIve 011 seal md gasket
clogged
breather
etc
Clean
or
replace
Worn
beanng
High
hummmg occurs at
a
high
speed
Replace
Damaged beanng Cychc knockmg
sound
occurs
alllo
at
a
low
speed Replace
Worn each
sphne
Replace
Worn each
hushmg
Replace
108