NISSAN 300ZX 1984 Z31 Automatic Transmission Owner's Manual

MAJOR OVERHAUL
Connecting rhsll,
SAT713
AT-21

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

DISASSEMBLY
6. Remove O.D. component assembly, then re-
move high-reverse clutch (Front) thrust washer
and needle bearing
& race
7. Draw out input shaft and intermedtate shaft
8. Attach Tool to pump and remove pump.
SAT524
9. Remove 0.D servo cover, then loosen O.D.
band servo piston stem
SAT525
10. Remove O.D. pack (0 D planetary gear &
direct clutch assembly)
SAT526
11 Remove needle bearing & race and direct
clutch thrust washer, then remove
0 D. brake
band
& strut.
SAT527
AT-23

DISASSEMBLY
12. Remove 0 D. servo assembly by llghtly tapping
retainer.
n
SAT528
13. Remove accumulator snap ring, then apply
pressure to remove accumulator plug, piston
and spring
rAccumUiatOr
14 Remove O.D. cancel solenoid and O-ring.
SAT530
16 Remove downshift solenoid, vacuum dia-
phragm & rod and O-rings.
LVacuum diaphragm SAT532
17 Remove speedometer pinion.
SAT533
AT-24

DISASSEMBLY
18. Remove control valve body.
Remove manual valve from valve body as a
precaution, to prevent valve from dropping out
accidentally.
SAT007
19 Remove 2nd brake band strut. Brake band and
clutch
& planetary gear pack [Including high-
reverse clutch (Front), forward clutch (Rear)
and front
planetary gear] may be removed
together
To prevent brake linings from cracking or peeling,
do not stretch the flexible band unnecessarily.
Before removing the brake band, always secure
it
with a clip as shown in the figure below.
Leave the clip
in position after removing the brake
band.
Flexible type band brake
2 mm 1008 In) dia wire
SAT656
20. Remove 2nd band servo retalning bolts. Apply
pressure to remove 2nd band =NO.
AT-25

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SLOlVS

DISASSEMBLY
27 Remove rear extension.
Be careful not to lose retainer washer.
rWarher
SAT537
2% Remove output shaft with governor.
11 SAT019
29. Remove governor thrust washer and needle
bearing.
Remove one-way clutch inner race attaching
hex-head slotted bolts using
Tool
30. Remove one-way clutch inner race, return
thrust washer, low and reverse return spring,
and spring thrust ring.
31. ,Apply air pressure to remove low and reverse
brake piston
. ' SAT022
32. Remove snap ring, then remove lock nut,
manual plate and parking rod.
y- - " -
SAT720
33 Remove Inhibitor switch and manual shah.
34. Remove
O.D. indicator switch and O-ring.
AT-27

REPAIR FOR COMPONENT PARTS
Oil Pump
011 pump inner gear,
pump =Over
1
011 pump housing
Lathe cur seal
011 seal
l
Lock-up control valve
DISASSEMBLY
1 Remove pump cover from pump housing
2. Stake off retaining pin using a punch [outer
dia.
1.5 to 1.8 mm (0.059 to 0.071 in)], then
remove lock-up control valve and spring
B
SAT721
SAT722
INSPECTION
1. Inspect pump body, bushing and pump shaft,
for
wear.
2. Inspect gears, lock up control valve, spring and
all internal surfaces for damage and visible
wear.
AT-28

REPAIR FOR COMPONENT PARTS
No of
active coil
Outer
coil dia
rnrn (in)
Wire dia
rnrn (in) Valve spring
Oil Pump (Cont’d)
Valve spring chart
Installed
Length
rnrn (in) N (kg. Ib)
Free length
rnrn (in)
Lock-up control valve 10 89 0 65 (0 02561 5 45 (0 21461 14 5 25 7 (1 0121 16 0 (0 630) (1 11, 45)
3 Measure clearance between outer gear and
crescent.
Standard clearance:
Wear limit:
0.14 - 0.21 mm (0.0055 - 0.0083 in)
0.25
mm (0.0098 in)
4 Measure clearance between outer gear and
pump housing.
Standard clearance:
Wear limit:
0.05 - 0.20 mm (0.0020 - 0.0079 in)
0.25
mm (0.0098 in)
5
SAT026
Using a feeler gauge and straight edge, measure
clearance between
gears and pump cover
Standard clearance:
0.02
- 0.04 mm (0.0008 - 0.0016 in)
Wear limit:
0.08 mm (0.0031 in)
AT162
AT-29

REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd)
ASSEMBLY
1. Install lock-up control valve and spring into oil
pump cover, then tap new retaining pin.
2 Mount pump housing in Tool and suitable
spacer. Set up pump housing with inner and
outer pump gears on
it and install pump cover
to pump housing Temporarily assemble
oil
pump.
sar-0
3 Set the cover to within the run-out of the
specified total indicator reading.
Total indicator reading:
Less than 0.07 mm (0 0028 in)
SAT541 &25580001
4 Tighten pump securing bolts to the specified
torque Recheck run-out
Drum Support
DISASSEMBLY
1 Remove drum support and gasket from O.D.
case.
SATW
2. Stake off retaining pin using a punch [outer
dia.
1.5 to 1.8 mm (0.059 to 0.071 in)], then
remove
O.D. cancel valve and spring
Don't stake it off from contacting face side
7 Retaining pin
00
AT-30