clutch NISSAN 300ZX 1984 Z31 Automatic Transmission Workshop Manual

GENERAL SERVICE NOTICE
Oil Channel
Oil channels which connect components are
located in the
areas shown below.
OIL CHANNELS IN OIL PUMP
Oil pump cover ride
11 pump suction hole Cooler in pressure
011 pump discharge hold LTorque converter in pressure
Oil pump housing ride
ne oressure
SAT499
SAT500
OIL CHANNELS IN TRANSMISSION CASE
Front face rlde
Front & 0 D lubrication Forward clutch (Rear1
gh-reverse clutch
011 pump discharge hole
Direct clutch apply &OD sew0 release pressure
0 0 indicator pressure
SAT501
Lower face side
Governor pressure (To control valve)
Governor feed
(From control
valve)
LOW & reverse brake
High-reverse clutch IFrontl pressure SAT502
ii
OIL CHANNELS IN O.D. CASE
011 pump suction hole Hlgh-reverse clutch (Front1 pressure
Forward clutch
(Rear) Oresure
ront & 0 D lubrication
SAT645 In regards to oneway plug. refer to page AT-32.
AT-6

GENERAL SERVICE NOTICE
I (Cont'd) Oil Cham
OIL CHANNELS IN DRUM SUPPORT OIL CHANNELS IN CONVERTER HOUSING
To lock-up ~ontrol valve
rDrain (E4N71Bl
clutch (Front)
Forward clutch
clutch pressure Front & 0 0 lubrmtmn
SAT706
3peration Mechanic:
In the E4N71B and 4N71B automatic transmission, each part operates as shown in the following table at
each gear select position
'arking
pawl
Htgh-
'everse
Front) Forward clutch (Rear) 0 D band servo Direct
clutch Range -
Release
ON ON
1 Reverse 1 ON 1 ION) ON
+-
ON I
I Neutral I ON I (ON) ON
T-
ON
-
ON
-
ON
ON
JT
I ION
'34
(0 D 1 ON I ON
Second I ON I (ON) ON
1 ON I (ON) 12
(Second) ON ON I ON
ON ord ON I I ON
The low & reverse brake IS applied In "1 I" range to prevent free wheeling when coasting and allows engine braking.
AT-7

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
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

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
Control Valve Body (Cont’d)
3 Check separator plate for scratches or damage
Replace if necessary Scratches or score marks
can cause oil to by-pass correct oil passages
and result in system malfunction
SAT046
4. Check oil passages in upper and lower valve
bodies for varnish deposits, scratches or other
damage that would impair valve movement.
Check threaded holes and related bolts and
screws for stripped threads, replace
as needed
Test valve springs for weakened load condition
Refer to Valve Body Spring Chart for spring
specifications.
5
ASSEMBLY
1 Install orifice check valves, valve springs, throt-
tle relief valve spring and steel ball in valve
body
Lower valve body
Orifice check Valve-P for 2nd-3rd rhifl .. reiea* (VG30E turbo (I a xbo only)
-oroftee check valve
Throttle relief valve,
Orifice chkk valveJ (direct clutch applies) SAT743
Upper valve body
A
Onfice check valve--@ (Front clutch applies) h
2 Assemble separator plate and upper valve body
on lower valve body, then tighten bolts.
ReaGer bolt
When installing these bolts, first be sure to install
the two reamer bolts to their original positions.
3. Install oil strainer.
AT-37

REPAIR FOR COMPONENT PARTS
Direct Clutch & Front Clutch
Number of return springs Front clutch . 5 Dtr~t clutch 10 Drum assembly
O-ring, 1
Layout of direct clutch plates
Dish plater
VG30E without turbo VG30E turbo
SAT727
AT-39

REPAIR FOR COMPONENT PARTS
Direct Clutch & Front Clutch (Cont'd)
DISASSEMBLY
Compress clutch springs and remove snap ring
from spring retainer using
Tool.
e For easy removal of piston from drum, mount
clutch on drum support. Use an air gun with
a
tapered rubber up to carefully apply air pres-
sure to loosen piston from drum
INSPECTION AND ASSEMBLY
1 Check clutch drive plate facing for wear or
damage.
Standard thickness:
Wear limit:
2 Check for wear on snapring, weak or broken
coil springs, and warped spring retainer.
3. Check the operation of check ball in piston
using compressed air.
1.50 - 1.65 mrn (0.0591 - 0.0650 in)
1.4 mm (0.055 in)
LAW IS blocked here
SAT553
4 Lubricate clutch drum hub and seals, and
install inner
seal and piston seal as illustrated
Be careful not to stretch seals during instal-
lation
SAT031
5. Assemble piston, being careful not to allow seal
to kink or become damaged during installation.
After installing, turn piston
by hand to ensure
that there
is no binding.
/ .----icJ SAT032
AT-40

REPAIR FOR COMPONENT PARTS
Thickness mm (in)
50(0197)
5
2 (0 2051
54(02131
5
6 (0 2201
5 8 (0 2281
6 0 IO 236)
6 2 10.244)
-
Direct Clutch & FI
Part number
31567-XZ900
31567-XZ901
31 567-X2902
31 567-XZ903
31 567-X2904
31 567-X2905
31567-XZ906
6 Reassemble spring and retainer. Reinstall snap
ring. Be sure snap ring IS properly seated.
Thickness mm (in1
5 8 IO 228)
6 0 IO 236)
6.2 (0 244)
6 4 (0 252)
6 6 IO 260)
6 8 IO 268)
7 0 IO 276)
-
SAT028
Part number
31567.X2904
31567-XZ905
31567-XZ906
31507-X8600
31507-X8601
31537-XZ800
31537-X2801
7. Install dish plate
High-reverse clutch (Front)
Direct clutch
SAT554
8. Install driven plates, drive plates, and secure
with snap ring.
9. Measure clearance between retainer plate and
snap ring
Specified clearance:
1.6. 1.8 mm (0.063.0.071 in)
it Clutch (Cont'd)
If necessary, try other retaining plates having
different thicknesses until correct clearance
IS
o bta i ned
Direct clutch
turbo 7 2 IO 283)
7410291)
AT-41