Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 300ZX 1984-1985,1988,1990,1994-1996 Approved 1988 Automatic Transmission
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AUTOMATIC TRANSMISSIOH
SECTION AT
CONTENTS
DESCRIPTION OF E4N71B ................................................ AT- 2
GENERAL SERVICE NOTICE .............................................. AT- 4
ON-VEHICLE SERVICE ................................................... AT- 9
REMOVAL AND INSTALLATION ........................................... AT-16
MAJOR OVERHAUL ...................................................... AT-18
DISASSEMBLY .......................................................... AT-20
REPAIR FOR COMPONENT PARTS.........................................
ASS EMB LY ................................
TROUBLE-SHOOTING AND DIAGNOSES
.............................
. . . . . . . .............................
AT-26
AT-49
AT-64
V
A/T INTERLOCK SYSTEM .................. .............................. AT-89
SERVICE DATA AND SPECIFICATIONS (S.D.S .............................. AT-95
SPECIAL SERVICE TOOLS ................. .............................. AT-99
DESCRIPTION OF E4N71B
The Model E4N718 automatic transmission is the
latest addition to Nissan's lineup of transmissions.
This transmission is based on the model L4N718
(mounted on the 1983 model 810),and can pro-
vide lockup of 3rd and O.D.by electronic control.
By use of a microcomputer, the electronic-control-
led lockup system permits lockup.
Inhibitor witch
ehicls speed senmor
0.0.mntrol w i t c h and indicator
Kiddown witch
Downshift solenoid
shift witch and low tempersturn smwr
0.0. m c e 1 solemid
SATS88A
AT-2
DESCRIPTION OF E4N71B
AT-3
~
GENERAL SERVICE NOTICE
Repair Notes
Before proceeding with disassembly, thorough- and requires extreme care when parts are
ly clean the outside of the transmission. It is removed and serviced. Place removed Rarts on
important t o prevent the internal parts of the a parts rack so they can be put back in the
transmission from becoming contaminated by valve body in the same positions and se-
dirt or other foreign matter. quences. Care will also prevent springs and
Disassembly should be done in a clean work small parts from becoming scattered or lost.
area. Before assembly, apply a coat of recommended
Use a nylon cloth or paper towel for wiping A.T.F. t o all parts. Vaseline may be applied to
parts clean. Common shop rags can leave lint O-rings and seals. Do not use any grease.
that might interfere with the transmission's Care should be taken to avoid damaging
operation. O-rings, seals and gaskets when assembling.
When disassembling parts, be sure t o place Abbreviations used throughout this section stand
them in order in parts rack so they can be put for the following:
back in the unit in their proper positions. A.T.F. ..... Automatic transmission fluid
All parts should be carefully cleaned with a D, .......... Drive range 1st gear
general purpose, non-flammable solvent before 0 D .......... Drive range 2nd gear
,
inspection or reassembly. D3 .......... Drive range 3rd gear
Gaskets, seals, and O-rings should be replaced. D4 .......... Drive range 4th gear
It is also very important t o perform functional O.D. ...... Overdrive
tests whenever it is designated. 1 .......... 1 range 2nd gear
,
The valve body contains many precision parts 1 .......... 1 range 1st gear
Contrc Valve
CONTROL VALVE UPPER BODY
Vacuum throttle valve
3rd4th shift valve7 yThrottle back-up valve
Pressure
SAT742
AT-4
GENERAL SERVICE NOTICE
Control Valve (Cont'd)
CONTROL VALVE LOWER BODY
r3rd-2nd timing valve
SAT705
Lock-up Control Valve and O.D.Cancel Valve
spring, rRetaining pin
Retaining pin)
Lock-up control valve
O.D. cancel valve
SAT498
AT-5
GENERAL SERVICE NOTICE
Oil Channel
Oil channels which connect components are OIL CHANNELS IN TRANSMISSION CASE
located in the areas shown below.
Front face side
Front 5 0.0.
lubrication Forward clutch (Rear)
OIL CHANNELS IN OIL PUMP p S "e
W S,
Oii DumD discharoe hole-
Oil pump wver side
indicator
0.0.
pressure
Air breather1
SAT501
Cooler in press" il pump suction hole
Lower face side
pump discharge hole
Servo apply pressure
Direct clutch apply 5
.O. servo release pressure
Oil pump housing side rvo release pressure
Governor pressure
IT0 control valve1
Governor feed
pressure
(From control valve)
Low 5 reversa brake
I pressure
Torque converter pressure
Forward clutch (Rear) pressure
High-reverre clutch (Front1 pressure
SAT502
OIL CHANNELS IN O.D. CASE
-Line pressure
(For lockup control)
SAT500
AT-6
GENERAL SERVICE NOTICE
Oil Chann I (Cont'd)
OIL CHANNELS IN DRUM SUPPORT OIL CHANNELS IN CONVERTER HOUSING
(For lockup control)
To lock-up Control valve
\ -Drain
Forward clutch
Front & OD. lubrication
From 3 4 Shih valveJ
. L O i l pump discharge hole
SAT503 SAT706
Mechanicz Operation
In the E4N71B automatic transmission, each part operates as shown in the following table a t each gear
select position.
The low 81reverse brake is applied in "1i"range to prevent free wheeling when coasting and allows engine braking.
AT-7
GENERAL SERVICE NOTICE
Hydraulic Control Circuits
6T707
AT-8
ON-VEHICLE SERVICE
Contr
1. Drain fluid by removing oil pan.
2. Remove kickdown solenoid and vacuum dia-
phragm & rod.
Be careful not t o lose vacuum rod.
Vacuum diaphragm
Downshift 501
1 40 mm (1.57in1
2 35mm11.38inl
SAT506 3 25 mm (0.98 in)
3. Remove control valve assembly.
After installing control valve t o transmission
case, make sure that control lever can be
moved t o a l l positions.
6. Install kickdown solenoid and vacuum dia-
phragm 81 rod.
Make sure that vacuum diaphragm rod does not
interfere with side plate of control valve.
Be careful not t o 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.
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.
AT-9
ON-VEHICLE SERVICE
-Extension Oil Seal Replacement- Parking Component
1. Remove oil seal. 1. Remove oil pan.
2. Remove propeller shaft.
3. Remove speedometer pinion.
SAT511
2 Apply coat of A.T.F. t o oil seal surface, then
.
drive new oil seal into place. 4. Support transmission with a jack, then remove
rear mounting bolts.
SAT709
3. Coat sealing lips with vaseline, then install
propeller shaft.
AT-1 0
ON-VEHICLE SERVICE
-Parking Component (Cont'd) - -Inhibitor Switch Adjustment-
5. Remove rear extension bolts, then draw out Disconnect harness a t connector, then remove in-
rear extension with rear mounting. hibitor switch.
Check continuity a t "N", "P" and "R" ranges.
6. Remove control valve assembly.
7. Inspect and repair parking components. Check
component parts for wear or damage. SATOBOA
With control lever held in "Neutral", turn
manual lever an equal amount in both direc-
tions t o see if current flow ranges are nearly
the same. (Current normally begins t o flow
before manual lever reaches a angle of 1.5" in
-Governor Valve Assembly- either direction.)
If current flows outside normal range, or if
1. Drain oil b y removing oil pan.
normal flow range is out of specifications,
2. Remove rear extension with rear mounting.
properly adjust inhibitor switch.
3. Remove governor valve assembly.
Adjust inhibitor w i t c h as follows:
1. Place the manual valve in Neutral (vertical
position).
2. Remove the screw.
4. Inspect and repair governor valve assembly.
Refer to Governor for inspection.
AT-I I
ON-VEHICLE SERVICE
-Inhibitor Switch Adjustrnent- -Manual Linkage Adjustrnent-
(Cont'd)
Move the shift lever from the "P" range t o "1"
3. Loosen the attaching bolts. range. You should be able t o feel the detents in
4. Using an aligning pin, 12.0mm (0.079 in) dia.] each range.
move the switch until the pin falls into the hole If the detents cannot be felt or the pointer indicat-
in the rotor. ing the range is improperly aligned, the linkage
needs adjustment.
1. Place selector lever in "P" range.
2. Loosen lock nuts.
SAT098
5. Tighten the attaching bolts equally.
6. Recheck for continuity. If faulty, replace the
switch.
3. Tighten lock nut @ until it touches trunnion
pulling selector lever toward "R" range side
without pushing button.
4. Back off lock nut @ 1 4 - 1/2 turns and
1
tighten lock nut @ t o the specified torque.
Fq
[01 : Locknut
8 - 11 N.m
(0.8 - 1.1 kg-m, 5.8 - 8.0 ft-lb)
Do not w r h
Lock
5. Move selector lever from "P" range t o "1"
range. Make sure that selector lever can move
smoothly.
AT-I2
ON-VEHICLE SERVICE
Vacuum Diaphragm Rod Downshift Solenoid
Adjustment
1. Remove downshift solenoid and O-ring.
1. Remove diaphragm from transmission case. Catch oil dropping out of the hole.
2. Using a depth gauge, measure depth "L". Be
sure vacuum throttle valve is pushed into valve
body as far as possible.
3. Check "L" depth with chart below and select
proper length rod.
Vacuum diaphragm
\
Note seated
i
bady
m
Transmission case wall
Depth \
SAT516
Vacuum throttle valve / Diaphragm rod
Valve Lmdy side plate
2. Check to verify that downshift solenoid is
SAT078 operating properly. If faulty, replace it with a
new one.
Vacuum diaphragm rod selection
Measured depth "L" Rod length
Part number
m m (in) mm (in)
Under 25.55 29.0
31932- XO103
(1.0059) (1.142)
25.65 - 26.05 29.5
31932. XO104
(1.0098- 1.0256) (1.161)
26.15 - 26.55 30.0
31932. XOlOO
(1.0295- 1.0453) (1.181)
26.65 - 27.05 30.5
31932. X0102
(1.0492- 1.0650) (1.201
Over 27.15 31 .O SAT517
31932 - XOlOl
(1.0689) ( 1.220)
AT-I 3
ON-VEHICLE SERVICE
Kickdown Switch Adjustment
When the pedal is fully depressed, a click can be Do not allow the switch t o make contact too soon.
heard just before the pedal bottoms out. If the This would cause the transmission to downshift on
click is not heard, loosen the locknut and extend part throttle.
the switch until the pedal lever makes contact with
the switch and the switch clicks. DIAGNOSIS:
Kickdown switch7 Switch can be heard clicking, and the transmission
s t i l l does not kickdown:
Check the continuity of the switch. Also check for
ah
available current.
The vehicle upshifts at approximately 55 (1st t o
2nd) and 90 km/h (2nd to 3rd) (34 and 56 MPH)
only: The kickdown switch may be internally
- Downshift solenoid
Downshift solenoid
Accelera
Accelerator t o r /
oadsl
r---.
,
SAT719
shorted. (When the switch is shorted, there is con-
tinuity through the switch in any position).
ON or START - @ CONTROL U N I T
- BR
Refer to
POWER SUPPLY
-
-
[Blue: R.H. ride1
BODY GROUND
[Back rids)
AT-I 4
ON-VEHICLE SERVICE
Overdrive and Lockup Control
O.D. CONTROL SWITCH & O.D. Inspection
INDICATOR LAMP Confirm that clicking sound is heard when power is
Inspection applied.
I
SAT620
SAT236A
O.D. CANCEL SOLENOID AND LOCKUP
SOLENOID
Location
OD. cancel solenoid
SATOBJA
AT-I 5
REMOVAL AND INSTALLATION
Removal Installation
Remove bolts securing torque converter to Drive plate runout
drive plate. Maximum allowable runout:
0.5 mm (0.020 in)
SAT718
a. Remove those bolts turning crank shaft.
b. Before removing torque converter, inscribe I f this runout is out of allowance, replace drive
matching marks on two parts so that they may plate and ring gear.
be replaced in their original positions during When connecting torque converter t o trans-
assembly. mission, measure distance "A" to be certain
0 Plug up openings such as oil charging pipe, etc. that they are correctly assembled.
Distance " A :
CAUTION:
More than 35 mm (1.38 in)
Take care when dismounting transmission not t o
strike any adjacent parts.
Install converter t o drive plate.
Align matching marks painted across both Pa&
during disassembly.
0 After converter is installed, rotate crankshaft
several turns and check to be sure that trans-
mission rotates freely without binding.
AT-1 6
REMOVAL AND INSTALLATION
Installation (Cont'd)
a Check inhibitor switch for operation.
a Check fluid level in transmission.
Move selector lever through all positions to be
sure that transmission operates correctly.
With parking brake applied, rotate engine a t
idling. Move selector lever through "N" t o
"D", t o "2", t o "1" and t o "R". A slight shock
should be felt by hand gripping selector each
time transmission i s shifted.
a Check t o be sure that line pressure is correct.
To do this, refer t o Line Pressure Test.
Perform stall test.
AT-I 7
MAJOR OVERHAUL
p)) : N.m 1kg.m. l1-lbl
@ 3 9 . 4 9 14.0 - 5.0.29.361
*>
LB 1 0 . 1 5 1 1 . 0 - 1 . 5 . 7 . 1 1 1
44 - 54 14.5. 5.5. 3 3 . 4 0 1
1 3 . 18 ( 1 . 3 . 1.8.9. 13) Qocl pump aiiemblv
@ 5.710.5~0.7.3.6.5.11
:e 8 . 11 ( 0 . 8 . 1.1.5.8.8.01
6 .
7 . 9 10.7 0.9. 5.1 . 6.51
[I 5 . 4 . 1.4 10.55. 0.75. 4.0. 5.41
H
lo 5 . 7 10.5. 0.7. 3 . 6 . 5.11
@ 29.39 13.0.4.0.22~291
CO""0
shell
O.D. band brake
servo assernblv
0 :Always replace when disassembled.
.
* : Black surface is front side.
: selen with proper thickness.
: Adjustment is rewired.
@ : Apply A.T.F.
AT-I 8
MAJOR OVERHAUL
Front planetary gear arrsmblv -1
SAT559A
AT-19
DISASSEMBLY
1. Remove torque converter, drain A.T.F. 4. Remove oil pan and inspect its contents. An
through end of rear extension, and place trans- analysis of any foreign matter can indicate the
mission on Tool. types of problems to look for. I f 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 build
up which can cause valves, servo, and clutches
t o stick and may inhibit pump pressure.
0 lJ34308, J3289-
SAT520
2. Remove lock-up solenoid.
SAT006
5. Loosen 2nd band servo piston stem lock nut
and tighten piston stem.
3. Remove converter housing.
SAT715
SAT003
AT-20
DISASSEMBLY
6. Remove O.D. component assembly, then re- 9. Remove O.D. servo cover, then loosen O.D.
move high-reverse clutch (Front) thrust washer band servo Diston stem.
and needle bearing & race.
10. Remove O.D. pack (O.D. planetary gear &
7. Draw out input shaft and intermediate shaft. direct clutch assembly).
SAT523
SAT526
8. Attach Tool t o pump and remove pump. 11. Remove needle bearing & race and direct
rST25850000 lJ25721-AI clutch thrust washer, then remove O.D. brake
band & strut.
SAT524
Thrust washer SAT527
AT-21
DISASSEMBLY
12. Remove O.D. servo assembly by lightly tapping 15. Remove drum support.
retainer.
SAT531
SAT528
16. Remove downshift solenoid, vacuum dia-
13. Remove accumulator snap ring, then apply phragm & rod and O-rings.
pressure to remove accumulator plug, piston
and spring. rOownshift solenoid
rAccumulator
LVacuum diaphragm
SAT532
17. Remove speedometer pinion.
14. Remove O.D. cancel solenoid and O-ring.
SAT533
SAT530
AT-22
~
DISASSEMBLY
18. Remove control valve body.
To prevent brake linings from cracking or peeling,
do not stretch the flexible band unnecessarily.
Before removing the brake band, always secure it
Remove manual valve from valve body as a
with a clip as shown in the figure below.
precaution, t o prevent valve from dropping out Leave the clip in position after removing the brake
accidentally. band.
Flexible type
band brake
/Approximately
2 mm (0.08 in1 dia. wire
SAT656
20. Remove 2nd band servo retaining bolts. Apply
19. Remove 2nd brake band strut. Brake band and
pressureto remove 2nd band servo.
clutch & planetary gear pack [including high-
reverse clutch (Front), forward clutch (Rear)
and front planetary gear] may be removed
together.
AT-23
DISASSEMBLY
21. Check one-way clutch to see if it operates 24. Remove connecting drum with internal gear.
properly.
II SAT017
SAT536
25. Pry off one end of snap ring with a screwdriver.
22. Remove rear planetary carrier snap ring and Remove snap ring from low and reverse brake
rear planetary carrier. assembly while applying plier force in direction
of arrow.
SAT015
23. Remove output shaft snap ring.
26. Remove low and reverse brake clutch assembly.
AT129
AT-24
DISASSEMBLY
27. Remove rear extension. 30. Remove one-way clutch inner race, return
thrust washer, low and reverse return spring,
Be careful not to lose retainer washer.
and spring thrust ring.
rWasher
SAT537
28. Remove output shaft with governor. 31. Apply air pressure to remove low and reverse
brake piston.
11 SAT019 -~
'SAT022
29. Remove governor thrust washer and needle
32. Remove snap ring, then remove lock nut,
bearing.
manual plate and parking rod.
Remove one-way clutch inner race attaching
hex-head slotted bolts using Tool.
SAT720
,, , I., 33. Remove inhibitor switch and manual shaft.
SAT020
34. Remove O.D. indicator switch and O-ring.
AT-25
REPAIR FOR COMPONENT PARTS
Oil Pump
Oil pump cover
Oil pump inner gear
1 T
Oil pump housing
1
SAT721
DISASSEMBLY Retaining pin
1. Remove pump cover from pump housing.
Spring
Lockup
cO"tr0l "alw
Punch>
SAT722
SAT538 INSPECTION
1. Inspect pump body, bushing and pump shaft,
for wear.
2. Stake off retaining pin with a punch [outer dia. 2. Inspect gears, lock-up control valve, spring and
1.5 t o 1.8 mm (0.059 to 0.071 in)], then re- all internal surfaces for damage and visible
move lock-up control valve and spring. wear.
AT-26
REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd)
3. Measure clearance between outer p a r and 5. Measure clearance between gears and pump
crescent. cover with a feeler gauge and straight edge.
Standard clearance: Standard clearance:
-
0.14 0.21 mm (0.0055 - 0.0083 in) - -
0.02 0.04 mm (0.0008 0.0016 in)
Wear limit: Wear limit:
0.25 mm (0.0098 in) 0.08 mm (0.0031 in)
AT162
4. Measure clearance between outer gear and
pump housing.
Standard clearance:
- -
0.05 0.20 mm (0.0020 0.0079 in)
Wear limit:
0.25 mm (0.0098 in)
SAT026
AT-27
REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd) Drum Support
ASSEMBLY DISASSEMBLY
1. Install lock-up control valve and spring into oil 1. Remove drum support and gasket from O.D.
pump cover, then tap new retaining pin. case.
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.
ELL-
SAT531
2. Stake off retaining pin with a punch [outer
dia. 1.5 t o 1.8 mm (0.059 t o 0.071 in)], then
remove O.D. cancel valve and spring.
( - 1 spacer
' \
[Thickness M mm (0.79 in)] SAT540 Don't stake it off from contacting face side.
Retaining pin
3. Set the cover to within the run-out of the 7
spri2
specified total indicator reading.
cancel waive-
Total indicator reading:
Less than 0.07 mm (0.0028 in) o'D'
LST25580001
( - 1 SAT541
4. Tighten pump securing bolts to the specified
torque.
Recheck run-out.
AT-28
REPAIR FOR COMPONENT PARTS
Drum Support (Cont'd)
INSPECTION
Inspect drum support bushing and ring groove
areas for wear.
SAT642
Measure clearance between Seal ring and ring
groove.
Standard clearance:
-
0.05 - 0.20 mm (0.0020 0.0079 in)
Wear limit:
0.20 mm (0.0079 in)
SAT545
Inspect O.D. cancel valve & spring and all
internal surfaces for damage visible wear.
AT-29
REPAIR FOR COMPONENT PARTS
Drum Sup1 r t (Cont'd)
ASSEMBLY 3. Install one-way orifice in O.D. case.
1. Install O.D. cancel valve and spring into drum
support, then tap new retaining pins. One-way orifice Steel ball
2. Install lubrication plug in drum support.
4. Mount oil pump assembly in Tool and suitable
spacer.
Spacer
[Thickness 20 mm (0.79 i d 1
SAT540
AT-30
REPAIR FOR COMPONENT PARTS
Drum Supp t (Cont'd)
5. Mount O.D. case, drum support and gasket in
oil pump assembly.
Ensure O.D. case is inserted properly into oil pump
assembly.
8. Rotate Tool to ensure proper alignment.
Oil pump housing 9. Tighten drum support bolts while Tool i s inside
Oil pump centering
toolST25580001 ( - )
O.D. case.
SAT547
6. Loosen drum support bolts before inserting
Tool (J33909).
10. Remove Tool (J33909)
11. Check t e drum support is within the run-out
of the specified total indicator reading.
Total indicator reading:
Less than 0.05 mm (0.0020 in)
7. sert the tapered edge of Tool and install
Tool until it completely passes through O.D.
case.
AT-31
REPAIR FOR COMPONENT PARTS
Control Valve Body
Upper body ride
Pressure regulator sleeve
Pressure regulator plug
,,-Spring seat
PtOr "alw
rControl valve upper body
Second lock valve
9 ,,,-3rd4th shift plug
um throttle valve
r3rd-lth shift valve
3rd4th shift sleeve
iSide plate "A" A 3 Q?i9
3
- - -
Lower body side
TControl valve lower body
3rd-2nd timing valve
/ '&Retaining pin
SAT62 1A
AT-32
REPAIR FOR COMPONENT PARTS
Control Valve Body (Cont'd)
DISASSEMBLY and valve bodies. Always use crocus cloth, which is
1. Remove oil strainer. a very fine type of cutting material. Never use
emery cloth, as it is too coarse and can scratch the
valves or valve bores. Scratches can lead to future
deposits of varnish or foreign matter.
During cleaning, do not remove the sharp edges of
the valve. When edges are rounded or scratched,
entry is provided for dirt or foreign matter t o work
into the sides of the valves and hinder valve move-
ment.
The valves may be cleaned using alcohol or lacquer
thinner. The valve bodies can be dip cleaned with
a good carburetor cleaner or lacquer thinner. Do
SAT564
not leave valve bodies submerged i n carburetor
cleaner longer than five minutes. Rinse parts
2. Separate lower body, separator plate and upper thoroughly and dry.
body. Lubricate all parts in clean A.T.F. before reassem-
Be careful not to scatter or lose orifice check valve, bly.
servo orifice check valve, or throttle relief check 1. Check valves for signs of burning. Replace if
valve (ball) and related springs. beyond clean-up.
2. Check oil strainer for general condition.
Replace if necessary.
- SAT067A
INSPECTION SAT045
A newly manufactured valve body represents
precision manufactured valves assembled with close
tolerances into precision bores of the valve body. 3. Check separator plate for scratches or damage.
If inspection reveals excessive clearances, 0.03 mm Replace if necessary. Scratches or score marks
(0.0012 in) or more, between the valves and the can cause oil t o by-pass correct oil passages
valve b'ody bores, replace the entire valve body and result in system malfunction.
rather than attempt rework.
If one or more valves are sticking from varnish
deposits or burns resulting from deteriorated oil or
overheating, you may be able t o clean the valves
AT-33
~ ~~
REPAIR FOR COMPONENT PARTS
Control Valve body (Cont'd)
Numbers stamped on valve springs listed in table
below are the same as those in the figure on
page AT-32.
' V O " I Free length
Valve spring
mm (in)
Pressure re-
38.9 (1.531)
@ Pressure modifier valve 18.5 (0.728)
SATMB
1st- 2nd VG30E 32.0 (1,260)
4. Check oil passages in upper and lower valve @ shift valve VG30E turbo 28.3 (1.114)
bodies for varnish deposits, scratches or other
damage that would impair valve movement. 0 valve
Check threaded holes and related bolts and VG30E turbo 39.2 (1.543)
screws for stripped threads; replace as needed.
5. Check valve springs for damage. Measure free Throttle back- VG30E 31.8 (1.252)
length of valve springs. If the free length is - upvalve
IVG30E turbo I 36.0 (1.417)
out of specification, replace it.
@ Solenoid downshift valve I 22.0 (0.866)
@ Second lock valve I 33.5 (1.319)
24.9 (0.980)
Orifice check valve I 15.5 (0.610)
@ 3rd - 4th shift valve I 30.3 11.193)
3rd - 2nd
@ timing valve I--+--
VG30E
VG30E turbo
23.2 (0.913)
22.2 (0.8741
AT-34
REPAIR FOR COMPONENT PARTS
Control Valve Body (Cont'd)
ASSEMBLY 2. Assemble separator plate and upper valve body
on lower valve body, then tighten bolts.
1. Install orifice check valves, valve springs, throt-
t l e relief valve spring and steel ball in valve
body.
v
Reamer bolt
SAT252A
When installing these bolts, first be sure t o install
the two reamer bolts to their original positions.
3. Install oil strainer.
Upper valve body Orifice check valve
Unit: mm (in)
Orifice check valve Diameter "A" Identification
2nd servo release 1.5 (0.0591 Green
Front clutch applies 2.2 (0.0871 Black
SAT766
A
SAT924
AT-35
REPAIR FOR COMPONENT PARTS
Oil Distributor
INSPECTION
a Inspect contacting surface of oil distributor
and ring groove areas for wear.
SAT725
a Measure clearance between seal ring and ring
groove.
Standard clearance:
-
0.04 - 0.16 mm (0.0016 0.0063 in)
Wear limit:
0.16 m m (0.0063 in)
Clearance
,-Seal ring
SAT726
AT-36
REPAIR FOR COMPONENT PARTS
Direct Clutch
Drum awmbly
1
\/ Driven plate (steel plat81
V Drive plate (friction plate)
L
Snap ring
SAT228A
AT-37
REPAIR FOR COMPONENT PARTS
Direct Clu 1 (Cont'd)
DISASSEMBLY ,-Air i s blocked here
Compress clutch springs and remove snap ring
from spring retainer with Tool.
ST25420001
lJ26063) 7
SAT553
4. Lubricate clutch drum hub and seals, and in-
SAT551 stall inner seal and piston seal as illustrated.
Be careful not t o stretch seals during installa-
For easy removal of piston from drum, mount tion.
clutch on drum support. Use an air gun with a
tapered rubber up t o carefully apply air pres-
sure t o loosen piston from drum.
SAT031
5. Assemble piston, being careful not t o allow
seal t o kink or become damaged during in-
stallation. After installing, turn piston b y hand
t o ensure that there is no binding.
INSPECTION AND ASSEMBLY
1. Check clutch drive plate facing for wear or .\
damage.
Standard thickness:
-
1.50. 1.65 mm (0.0591 0.0650 in)
Wear limit:
1.4 mm (0.055 in)
2. Check for wear on snap ring, weak or broken
coil springs, and warped spring retainer.
3. Check the operation of check ball in piston
using compressed air. SAT032
AT-38
~
REPAIR FOR COMPONENT PARTS
Direct Clul I (Cont'd)
6. Reassemble spring and retainer. Reinstall snap Thickness mm (in) Part numbei
ring. Be sure snap ring is properly seated.
0.4 (0.016) 31606-X8501
0.6 (0.024) 31606-X8502
A \ 0.8 (0.031) 31606-X8500
1.0 (0.039) 31606-X8503
1.2 (0.047) 31606.X8504
10. Testing direct clutch.
With direct clutch assembled on drum w p -
port, direct a jet of air into hole in clutch drum
for definite clutch operation.
SAT028
7. Install driven plates, drive plates, and secure
with snap ring.
8. Install retainer plate, O.D. one-way clutch as-
sembly, race side, and secure with snap ring..
9. Measure clearance between race side and snap
ring.
Specified clearance:
-
0 0.2 rnrn ( 0 0.008 in)
~
If necessary, try other race side having dif-
ferent thicknesses until correct clearance is
SAT621
obtained.
SAT034
AT-39
REPAIR FOR COMPONENT PARTS
Front Clutch
Number of return springs ... 5 Drum assembly
O-ring,
I
0
\Retainer plate
.- --
Snap ring
- -
Layout of front clutch plates
I
I
d
4
Dish plate
h e t a i n i n g plate LRetaining plate
VG30E VG30E turbo
SATZ86A
AT-40
REPAIR FOR COMPONENT PARTS
Front Clutch (Cont'd)
DISASSEMBLY y A i r is blocked here
a Compress clutch springs and remove snap ring
from spring retainer with Tool.
ST25420001 I J 2 6 0 6 3 - A l 7
\ SAT653
4. Lubricate clutch drum hub and seals, and
install inner seal and piston seal as illustrated.
SAT551
Be careful not t o stretch seals during instal-
a For easy removal of piston from drum, mount lation.
clutch on drum support. Use an air gun with a
tapered rubber up t o carefully apply air pres-
sure t o loosen piston from drum.
SAT031
5. Assemble piston, being careful not t o allow seal
t o kink or become damaged during installation.
After installing, turn piston by hand to ensure
that there is no binding.
INSPECTION AND ASSEMBLY
1. Check clutch drive plate facing for wear or
darnage.
Standard thickness:
1.50 - 1.65 mm (0.0591 - 0.0650 in)
Wear limit:
1.4 mm (0.055 in)
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. / -T SAT032
AT-41
REPAIR FOR COMPONENT PARTS
Front Clutch (Cont'd)
6. Reassemble spring and retainer. Reinstall snap
ring. Be sure snap ring is properly seated.
SAT034
Available retaining plate
SAT028
7. Install dish plate.
Thickness mm (in) Part number
5.0 (0.197) 31567-X2900
5.2 (0.205) 31567-XZ901
5.4 (0.213) 31567-X2902
5.6 (0.220) 31567-XZ903
5.8 (0.228) 31 567-X2904
6.0 (0.236) 31 567-XZ905
6.2 (0.244) 31 567-XZ906
SAT233A 10. Testing front clutch (High-reverse)
With front clutch (High-reverse) assembled on
drum support, direct a jet of air into hole in
clutch drum for definite clutch operation.
8. Install driven plates, drive plates, and secure
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