Fluid NISSAN 300ZX 1984 Z31 Automatic Transmission Workshop Manual

GENERAL SERVICE NOTICE
Repai
Before proceeding with disassembly, thorough-
ly clean the outside of the transmission It IS
important to prevent the internal parts of the
transmission from becoming contaminated by
dirt or other foreign matter.
Disassembly should
be done in a clean work
area. Use
a nylon cloth or paper towel for wiping
parts clean. Common
shop rags can leave lint
that might interfere with the transmission's
operation.
When disassembling parts, be sure to place
them in order
in parts rack so they can be put
back in the unit
in their proper positions
All parts should be carefully cleaned with a
general purpose, non.flammable solvent before
inspection or reassembly.
Gaskets,
seals, and O-rings should be replaced.
It is also very important to perform functional
tests whenever it is designated.
The valve body contains many precision parts
Contri
CONTROL VALVE UPPER BODY
3rd4th shift valve7
Pressure I
Uotes
and requires extreme care when parts are
removed and serviced. Place removed parts on
a parts rack so they can be put back in the
valve body in the same positions and
se-
quences. Care will also prevent springs and
small parts from becoming scattered or
lost
Before assembly, apply a coat of recommended
A
T.F. to all parts Vaseline may be applied to
O-rings and
seals. Do not use any grease.
Care should be taken to avoid damaging
O-rings, seals and
gaskets when assembling
Abbreviations used throughout this section stand
for the following.
A.T.F. ... Automatic transmission fluid
D, ........ Drive range 1st gear
D, .... ... Drive range 2nd gear
D, . . ... Drive range 3rd gear
D4 ........ Drive range 4th gear
0.D . .... Overdrive
1, ....... . 1 range 2nd gear
1, . . .... 1 range lstgear
Valve
Vacuum throttle valve
f rThrottle back-up valve
1st 2nd shift valve
2nd3rd shift valve
Second lock valve -i
SAT742
AT-4

ON-VEHICLE SERVICE
Contrl
1. Drain fluid by removing oil pan.
2. Remove kickdown solenoid and vacuum dia
phragm
23 rod
Be careful not to lose vacuum rod.
Vacuum diaphragm
SAT506
3. Remove control valve assembly.
Be careful not to drop manual valve out of valve
body.
4. Disassemble, inspect and assemble control valve
assembly Refer to Control Valve Body.
5. Install control valve assembly.
0 Set manual shaft at Neutral, then align manual
plate with groove in manual valve of control
valve assembly.
Securing bolts come
in 3 different lengths. 0
1 40 mm I1 51 in) 2 35 mm (1 38 in1 3 25mm1098mI
After installing control valve to transmission
case, make sure that control lever can be
moved to all positions.
6 Install kickdown solenoid and vacuum dia-
phragm
& rod.
Make sure that vacuum diaphragm rod does not
interfere with side plate
of control valve.
AT-I 0

REMOVAL AND INSTALLATION
installation (Cont'd)
Check inhibitor switch for operation
Check fluid level
in transmission.
Move selector lever through
all positions to be
sure that transmission operates correctly.
With parking brake applied, rotate engine
at
idling Move selector lever through "N" to
"D", to "2". to "1" and to "R" A slight shock
should
be felt by hand gripping selector each
time transmission
is shifted.
Check to be sure
that line pressure is correct.
To do this, refer to Line Pressure Test
Perform stall test.
AT-I 9,

DISASSEMBLY
1. Remove torque converter, drain A.T.F
through end of
rear extension, and place trans-
mission on
Tool.
v
SAT520
2 Remove lock-up solenoid (E4N71B).
3. Remove converter housing.
SATOW
4. Remove oil pan and inspect its contents. An
analysis of any foreign matter can indicate the
types of problems to look for. If the fluid
IS
very dark, smells burned, or contains foreign
particles, the frictional material (clutches,
band.) may need replacement. A tacky film
that will not wipe clean indicates varnish bulld
up which can cause valves, servo, and clutches
to stick and may inhibit pump pressure.
SAT006
5. Loosen 2nd band servo piston stem lock nut
and tighten piston stem.
If it turns more than
two turns, the band
is worn out.
SAT71 5
AT-22

TROUBLE-SHOOTING AND DIAGNOSES
Preliminary Checks
(Prior to Road Testing)
FLUID LEAKAGE
To detect a fluid leak
1) Raise vehicle
2) Clean area suspected of leaking
3) Start engine, apply foot brake, place control
lever in drive, and wait a few minutes
4) Stop engine
5) Check for fresh leakage
FLUID CONDITION
Examine the AT F and note its color, texture,
and odor
1) Dark of Black Fluid
With a burned odor
- Worn friction material
2) Milky Pink Fluid Water Contamination
- Road water entering through filler
tube or breather
3) Varnished Fluid, light to dark brown and
tacky Oxidation
- Over or Underfilling
- Overheating
- Road Testing
Before starting road tests, install vacuum gauge
SAT596
Perform road tests, using "Symptom" chart, as
follows
"P" RANGE
1 Place the control lever in "P" range and start
the engine Stop the engine and repeat the
procedure in all other ranges and neutral
2. Stop vehicle on a slight upgrade and place con-
trol lever
in "P" range Release parking brake
to make sure vehicle remains locked
"R" RANGE
1 Manually shift the control lever from "P" to
"R", and note shift quality
2 Drive the vehicle in reverse long enough to
detect slippage or other abnormalities
"M" RANGE
1 Manually shift the control lever from "R" and
"D"
to "N" and note quality.
2. Release parking brake with control lever in
"N" range Lightly depress accelerator pedal to
make sure vehicle does not move (When
vehicle
is new or soon after clutches have been
replaced, vehicle may move slightly This
IS not
a problem )
"D" RANGE
1 Manually shift the gear selector from "N" to
"D" range, and note shift quality.
-
AT-63

TROUBLE-SHOOTING AND DIAGNOSES
Stall
The stall test is an effective method of testing
clutch and band holding ability, torque converter
one-way clutch operation, and engine performance
A
stall test should only be performed as a last
resort because of the high fluid temperature it
generates and the excessive load it places on the
engine and transmission.
CAUTION:
a. Transmission and engine fluid levels should
b
c.
d
always be checked and fluid added as needed.
Run engine to
attain proper warm-up.
During test, never
hold throttle wide-open for
more than
5 seconds
Do not test more than two gear ranges without
driving vehicle to
cool off engine and trans-
mission
STALL TEST PROCEDURE
1 Set parking brake and block wheels
SAT597
2 Install a tachometer where it can be seen by
driver during
test
3 Start engine and place select lever in "D"
range
4 Apply foot brake and accelerate to wide-open
throttle
5 Quickly note the engine stall speed and imme-
diately release throttle
Stall revolution:
VG30E engine without turbo
VG30E turbo engine
2,150 - 2,450 rpm
2,500 - 2,800 rpm
SAT598
6
7 CooloffAT F
8 Perform stall tests in the same manner as in
steps 3 through 7 with select lever in "1" and
"R", respectively
Shift select lever to "N"
AT-93

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
General Specifications
X8075 Engine model ~ I VG30E t VG30Eiurbo X8006 -
Autamatictranrmirrion model I E4N71B I 4N71B ~~
Stall torque ratlo
Transmission gear ratio
1st
2nd
TOP OD
Reverse
Recommended 011
1 X8075 1 X8006 Tianrmwon model code
number ~
20 1
2 458
1458
1000
0 686
2 182
Aurornar~c lranmwon fluid 'oexro" type
2 0 IO 0791
Oil capacity
2 2 (0 0871
7 0 hferr
17-3/8 US qt, 6-1/8 Imp qtl
5 6 (0 220)
5 8 (0 2281
6 0 (0 2361 6 2 IO 2441
6 4 10 2521
6 6 10 2601 6 8 (0 2681
7 0 (0 2761
--Specifications and Adjustment,
31567-XZ903
31567-XZ904
31567-XZ905
31567-XZ906
31507-X86W
31507-X8601
31537-XZ800
31537-XZ801
Tr.msmirrmn model code number
Torque converter assembly
Srarnped mark on the
torque COnYerter
Number of drive plates
Number of driven plates
Clearance rnm Ion1
Standard Allowable limit
Drive plate thickness mm (in1
Standard
Allowable limit
Thlcknesr of retamng
Dlate
1 GC GK
1 50 1 65 (0 0591 .O 06501
1 4 (0 0551
Thickness I numbel Part
mrn Iml
Thickness number
AT-95