1984 NISSAN 300ZX Timin

GENERAL SERVICE NOTICE
Control Valve (Cont'd)
CONTROL VALVE LOWER BODY
3rd-2nd timing valve
f --
, /
-7, - _- _:. - A=----* --
-
SAT705
Lock-up Control Valve and O.D. Cancel Valve
Retaining pin1
SAT498
AT-5

REPAIR FOR COMPONENT PARTS
Control Valve Body
Upper body ride
Pressure regulator sleeve
Pressure regulator PlYg
Pressure regulator valve
Control valve upper body
Second
2nd-3rd shift Plug
Manual t
'v%! rVacuurn throttle valve
(@ ,-3rd4th shift valve -
3rd4th shift sleeve Pressure modifier WlYe
ate "6"
69
G
Throttle back-up valve
lrt3nd shift valve
2nd-3rd shift wlve
Side plate "A"
W
Lower body ride
3rd-2nd timing valve/
rControl valve lower body
&Retaining pin
SAT724
AT-34

REPAIR FOR COMPONENT PARTS
Control Valve Body (Cont'd)
I
@ Second lock valve
VALVE BODY SPRING CHART
055(00217) 555(021851 16 33 5 (1 319) 21 0 (0 827) 5 88 (0 60,1.32)
Free length
check
valve VG30E turbo 1 0 (0 0391 6 5 (0 256) 13 24 9 (0 980)
Outer
19 0 (0 748) 27 95 (2 85,6 28)
Numbers stamped on valve springs listed in table
~ below are the Same as those in the figure on the
previous page.
Orifice check valve
Servo orifice check
valve
3rd - 4th VG30E
@ shift
VG30E turbo
I nsta I led Outer coil
mm (in)
Wire dia No of Free length
Valve spring dia active
coil mm (in) Length mm (in)
mm (in) N (kg. Ib)
023 (00091) 50 (0 197) 12
0 8 (0 031) 6 6 (0260) 12 6
0 75 (0 0295) 6 1 (0 240) 13 6
-
Solenoid downshift 10 55 (0 0217) 15 55 (0 2185) I 12 @ valve
155(0610)
22 0 (0 866) 12 5 (0 492) 5 88 (0 60,l 32) I
11 5(04531 OlO(OOl.002)
30 3 (1 193)
I VG30E 1 09 (0035) 1 65(0256) I 14 relief
24 586
13 1 (0 516) (2 507, 528)
26 8 (1 055) 19 0 (0 748) 21 48 (2 19,4 83)
3rd - 2nd
valve
@ timing
VG30E 0 7 (0 028) 5 9 (0 232) 12 5 227(0894) 14.5(0571) 11 08(1.13,249)
VG30E turbo 0 9 (0 035) 7 4 (0 291) 9 207(0815) 14.5(0571) l648(1 68,370)
268(1055) I131 (0516) I 2138(218.481)
AT-35

TROUBLE-SHOOTING AND DIAGNOSES
Road Test
2 Using the shift schedule as a reference, drive
vehicle in
"D" range Record, on symptom
chart, respective vehicle speeds
at which up-
shifting and downshifting occur These speeds
are to be read at several different intake mani-
fold vacuum levels
(see the chart on the next
page). Also determine the timing
at which
shocks are encountered during shifting and
which clutches
are engaged
Drive on different throttle condirtom
SAT590
3. Check to determine if shifting speed changes
when accelerator pedal
is depressed slowly and
when
it is depressed quickly (E4N71B trans-
mission models)
4 Check to determine if shifting to overdrive gear
cannot be made while power shift switch
(E4N71B transmission) is"0N" or
O.D. cancel
switch (4N71
B transmission) is "OFF".
0 0. cancel witch SAT744
3 (Cont'd)
5. When vehicle is being driven in the 65 to 85
km/h (40 to 53 MPH) range in "Ds" range at
half to light throttle position, fully depress ac-
celerator pedal to make sure
it downshifts from
3rd to 2nd
gear.
6. When vehicle is being driven in the 25 to 35
km/h (16 to 22 MPH) ("D," range) at half to
light throttle position, fully depress accelerator
pedal to make sure
it downshifts from 2nd to
1 st gear
"2" RANGE
1 While vehicle is being driven in "2" range,
make sure that
it does not shift into 1st or 3rd
gear, despite speed changes.
2 Shift control lever to "D" range and allow
vehicle to operate
at 40 to 50 km/h (25 to 31
MPH) Then, shift to "2" range to make sure
it downshifts to 2nd gear.
"1" RANGE
1. Shift control lever to "1" range and allow
vehicle to run. Ensure
that it does not upshift
from 1st to 2nd gear although vehicle speed
increases
2 While vehicle is being driven in "1" range,
release accelerator pedal
to make sure that
engine compression acts
as a brake
3. Shift control lever to "D" or "2" range and
allow vehicle to run
at 20 to 30 km/h (12 to 19
MPH). Then, shift control lever to "1" range to
make sure the downshift to 1st gear is made.
AT-64