Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 300ZX 1984-1985,1988,1990,1994-1996 Approved 1984 Automatic Transmission
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AUTOMATIC TRANSMISSIOB
SECTION AT
CONTENTS
DESCRIPTION OF E4N71B ..... . . . . . . . . . . . . AT- 2
GENERAL SERVICE NOTICE . . .. . . . . . . . . AT- 4
ON-VEHICLE SERVICE . . . .. .... . . . . . . . . . AT-10
REMOVAL AND INSTALLATION.. . . . .. . .
t . . . . . AT-18
MAJOR OVERHAUL . . . . . . . . . . . . . . . . AT-20
DISASSEMBLY . . . ....................... AT-22
REPAIR FOR COMPONENT PARTS . .. ...... . . . . . . . . . . AT-28
ASSEMBLY . . . . . . .. ....... .............. AT-49
TROUBLE-SHOOTING AND DIAGNOSES . .......... ... AT-63
SERVICE DATA AND SPECIFICATIONS (S D.S) . . . . . . . . . . . . . . . . . AT-95
SPECIAL SERVICE TOOLS ........................... AT-99
DESCRIPTION OF E4N71B
The Model E4N71B automatic transmission is the
I speeds (1st to 4th speed)
latest addition to Niaan's lineup of transmissions. Either shifting pattern ("standard" or "power") is
This transmission is based on the model L4N71B automatically selected by programs set in the
(mounted on the 1983 model 810), and can pro- lockup control unit depending on the speed a t
vide lockup of all forward speeds (1st to 4th speed) which the accelerator pedal is depressed These
by electronic control. programs are set in response to the vehicle speed
By use of a microcomputer, the electronic-control- and throttle position
led lockup system permits lockup of all forward
rlnhibitor switch \Lockup control unit
/;?\I!
LPower Shift switch and mdtcator
Stop lamp rwlrch
\Kickdown switch
Downshift solenoid
Throttle valve r w i t c h l
Lockup solenoid
\ Shift switch and low temperature sensor
0 indicator
0 D cancel solenoid
SAT7M
AT-2
DESCRIPTION OF E4N71B
AT-3
GENERAL SERVICE NOTICE
Repai Uotes
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 parts 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. to all parts Vaseline may be applied t o
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 t o 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 D , ....
... Drive range 2nd gear
inspection or reassembly. D, . . ... 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 0.D . ....
Overdrive
tests whenever it is designated. 1, .......
. 1 range 2nd gear
The valve body contains many precision parts 1, . . ....1 range lstgear
Contri Valve
CONTROL VALVE UPPER BODY
f
Vacuum throttle valve
3rd4th shift valve7 rThrottle back-up valve
Pressure I
1st 2nd shift valve
2nd3rd shift valve
-i
Second lock valve
SAT742
AT-4
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 p i n 1
SAT498
AT-5
GENERAL SERVICE NOTICE
Oil Channel
Oil channels which connect components are OIL CHANNELS I N TRANSMISSION CASE
located in the areas shown below. Front face rlde
Front & 0 D lubrication Forward clutch (Rear1
OIL CHANNELS I N OIL PUMP 011
pump discharge hole
gh-reverse clutch
Oil pump cover ride Direct clutch apply
& O D sew0
release pressure
0 0 indicator
pressure
SAT501
Cooler in pressure 11 pump suction hole
Lower face side
011 pump discharge h o l d LTorque converter in pressure
SAT499
Oil pump housing ride
Governor pressure
(To control valve)
Governor feed
(From control valve)
LOW & reverse brake
ii
High-reverse clutch IFrontl pressure
SAT502
OIL CHANNELS I N O.D. CASE
011
pump suction hole Hlgh-reverse clutch
ne oressure (Front1 pressure
Forward clutch
SAT500 (Rear) Oresure
ront & 0 D lubrication
In regards to oneway plug. refer to page AT-32. SAT645
AT-6
GENERAL SERVICE NOTICE
Oil Cham I (Cont'd)
OIL CHANNELS IN DRUM SUPPORT OIL CHANNELS IN CONVERTER HOUSING
To lock-up ~ o n t r ovalve
l
rDrain (E4N71Bl
clutch (Front)
Forward clutch
clutch pressure
Front & 0 0 lubrmtmn
SAT706
Mechanic: 3peration
In the E4N71B and 4N71B automatic transmission, each part operates as shown in the f o l l o w i n g table a t
each gear select position
Htgh-
0 D band servo Forward
Range
Direct - 'everse
clutch
'arking
clutch pawl
Release (Rear)
Front)
1
I
Reverse
Neutral
1
I
ON
ON
1
I
ION)
(ON)
-
ON
ON
ON
ON ON
+-T- ON I
ON
-
ON
ON JT
I
'34
(0 D 1
Second
II ON
I O N
I (ON) ON
ON ON
12
(Second)
1 ON I (ON) 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
GENERAL SERVICE NOTICE
Hydraulic Control Circuits
E4N71B
0
S
Primary Nota Marked X are drain
governor governor
x valve SAT707
valve
AT-8
GENERAL SERVICE NOTICE
Hydraulic Control Circuits (Cont'd) -
4N71B High-
OD
0D rwerse Forward 2"d Low&
cancel
Torque converter
Note Marked X are dram
SAT708
AT-9
ON-VEHICLE SERVICE
Contrl
1. Drain fluid by removing oil pan.
2. Remove kickdown solenoid and vacuum dia
phragm 2 rod
3
Be careful not to lose vacuum rod.
Vacuum diaphragm
1 40 mm I1 51 in)
2 35 m m ( 1 38 in1
SAT506 3 25mm1098mI
3. Remove control valve assembly.
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.
Be careful not to drop manual valve out of valve
body.
4. Disassemble, inspect and assemble control valve
assembly Refer t o Control Valve Body.
5. Install control valve assembly.
0 Set manual shaft a t Neutral, then align manual
plate with groove in manual valve of control
valve assembly.
0 Securing bolts come in 3 different lengths.
AT-I 0
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.
SAT51 1
2 Apply coat of A.T.F. to oil seal surface, then
drive new seal into place. 4 Support transmlssion with a jack, then remove
rear mounting bolts.
3 Coat sealing lips with vaseline, then install
propeller shaft
AT-1 1
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 at "N", "F'" and "R" ranges.
VG30E
without turbo
VG30E turbo
VG30E
0
wnhout turbo VG30E turbo
6. Remove control valve assembly.
7. Inspect and repair parking components Check
component parts for wear or damage. SAT710
With control lever held in "Neutral, turn
manual lever an equal amount in both direc-
tions to 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 by 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 switch as follows
1 Place the manual valve in Neutral (vertical
position)
2. Remove the screw.
4. Inspect and repair governor valve assembly.
Refer t o Governor for inspection
AT-I 2
ON-VEHICLE SERVICE
-Inhibitor Switch Adjustrnent- --Manual Linkage Adjustrnent-
(Cont'd)
M,we the shift lever from the "P" range t o "Range
3. Loosen the attaching bolts. 1"'. You should be able t o feel the detents in each
4 Using an aligning pin, [20 mm (0.079 in) dia 1 range
move the switch until the pin falls into the hole I f the detents cannot be felt or the pointer indicat-
in the rotor ing the range is improperly aligned, the linkage
needs adjustment
1 Place shift lever in "N" range.
2 Loosen locknuts
5. Tighten the attaching bolts equally.
6. Recheck for continuity. I f faulty, replace the
switch.
3. Move range selector lever t o the "N" range.
Range selector lever
SAT741
4 Tighten lock nuts when floor control lever IS in
"N" range and pushed against the "P" range
side.
5. Move control lever from "P" range t o "1"
range Make sure that control lever can move
smoothly and without any sliding noise.
AT-I 3
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 i s pushed into valve
body as far as possible.
3 Check "L" depth with chart below and select
proper length rod.
Vacuum diaphragm
I
1 \
SAT516
rod
2 Check to verify that downshift solenoid is
SAT078 operatmg properly. If faulty, replace it with a
new one
Measured depth "L" Rod length
Part number
mm (in) mm (in)
Under 25 55 29 0
31932- X0103
(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 0 SAT517
31932. XOlOl
(1 0689) ( 1 220)
AT-I4
ON-VEHICLE SERVICE
Kickdown Switch Adjustment
When the pedal is fully depressed, a click can be Do not allow the switch to make contact too soon.
heard just before the pedal bottoms out If the This would cause the transmission t o downshift on
click i s 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:
\rqi&&
Fi $
Kickdown switch Switch can be heard clicking, and the transmission
7 still does not kickdown:
Check the continuity of the switch. Also check for
available current.
The vehicle upshifts a t approximately 55 (1st t o
2nd) and 90 k m l h (2nd t o 3rd) (34 and 56 MPH)
only The kickdown switch may be internally
Downshift solenold
shorted (When the switch is shorted, there IS con-
tinuity through the switch in any position).
SAT719
AT-I 5
ON-VEHICLE SERVICE
Overdrive Control System (4N71B)
I .
.
-
P
a2
*
I
1
SAT712
AT-1 6
ON-VEHICLE SERVICE
Overdrive Control Sy: ?m(4N71B) (Cont'd)
O.D. CANCEL SWITCH 81 O.D. Inspection
INDICATOR LAMP Confirm that clicking sound is heard when power is
applied.
Inspection
Power shift switch
w SAT620
SAT716
O.D. CANCEL SOLENOID
Location
SAT619
AT-I 7
REMOVAL AND INSTALLATION
Removal Installation
a Remove bolts securing torque converter to Drive plate runout
drive plate. Maximum allowable runout:
0.5 mm (0 020 in)
n
SAT718
a. Remove those bolts turning crank shaft.
b. Before removing torque converter, inscribe If 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 0 When connecting torque converter to trans-
assembly. mission, measure distance "A" to be certain
a Plug up openings such as oil charging pipe, etc. that they are correctly assembled.
Distance "A":
CAUTl ON :
More than 35 mm (1.38 in)
Take care when dismounting transmission not t o
strike any adjacent parts.
a Install converter to drive plate
a. Align matching marks painted across both parts
during disassembly.
b. Before installing torque converter securing
bolts, apply locking sealer t o threads of bolts.
a After converter is installed, rotate crankshaft
several turns and check to be sure that trans-
mission rotates freely without binding
AT-I 8
REMOVAL AND INSTALLATION
installation (Cont'd)
Check inhibitor switch for operation
Check fluid level in transmission.
Move selector lever through all positions t o 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".to "1" and to "R" A slight shock
should be felt by hand gripping selector each
time transmission is shifted.
Check t o be sure that line pressure is correct.
To do this, refer t o Line Pressure Test
Perform stall test.
A T - I 9,
MAJOR OVERHAUL
N rn 1kg-m. ft-lb)
@ 39 49140-50.29-361
@ 10- 15110- 15.7-11)
@ -
44.54 1 5 5 5,33 -401
4
@ 13 18113-1.8.9-13)
& 5 - 7 ( 0 5 - 0 7 . 3 6 . 5 1) 011
pump assembly
@ 8 - 11 ( 0 8 - 1.1,58-80)
@ 7 - 9 ( 0 7 - 0 9,5 1 - 6 5 )
-
@- 7 4 10.55 0 75,4 0 5 4)
5 4I -
@ 5 . 7 105 -0.7,36 5 1) -
@ 29 3 9 1 3 0 - 4 0 . 2 2 - 2 9 )
O-ring (E4N71B)'
Converter housing
lbp&y) ,,,rLOck*pcontrol /~
solenotd
,
/Thrust washer *-
brakeband
0 D planetary gear assembly
/
/
Connectmg shell-,
,
/Gasket *
Lathe cut seal Tin& 7\
\Thrust washer t
2nd brake band
Drum support
0 D cancel solenold
0 D band brake
servo assembly
* Always replace
t Select with proper thcknerr
* Adjustment IS requwed
AT-20
MAJOR OVERHAUL
Connecting rhsll,
SAT713
AT-21
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 bulld
up which can cause valves, servo, and clutches
t o stick and may inhibit pump pressure.
v
SAT520
2 Remove lock-up solenoid (E4N71B).
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.
3 Remove converter housing.
.
SAT71 5
SATOW
AT-22
DISASSEMBLY
6. Remove O.D. component assembly, then re- 9. Remove 0.D servo cover, then loosen O.D.
move high-reverse clutch (Front) thrust washer band servo piston stem
and needle bearing & race
SAT525
10. Remove O.D. pack (0 D planetary gear &
7. Draw out input shaft and intermedtate shaft direct clutch assembly)
SAT526
8. Attach Tool t o pump and remove pump. 11 Remove needle bearing & race and direct
clutch thrust washer, then remove 0 D. brake
band & strut.
SAT524
SAT527
AT-23
DISASSEMBLY
12. Remove 0 D . servo assembly by llghtly tapping
retainer.
n
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
rAccumUiatOr
LVacuum diaphragm
SAT532
17 Remove speedometer pinion.
14 Remove O.D. cancel solenoid and O-ring.
SAT533
SAT530
AT-24
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
2 m m 1008 In) dia wire
SAT007 SAT656
20. Remove 2nd band servo retalning bolts. Apply
19 Remove 2nd brake band strut. Brake band and pressure t o remove 2nd band =NO.
clutch & planetary gear pack [Including high-
reverse clutch (Front), forward clutch (Rear)
and front planetary gear] may be removed
together
AT-25
6ut~
deus Veqs indino artowau '&z
SLOlVS
DISASSEMBLY
27 Remove rear extension. 30. Remove one-way clutch inner race, return
Be careful not t o lose retainer washer. thrust washer, low and reverse return spring,
and spring thrust ring.
rWarher
SAT537
2% 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 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
pump =Over
0 1 pump
1 inner gear,
011
pump housing
1
Lathe cur seal
l
01 seal
1
B
Lock-up control valve
SAT721
DISASSEMBLY
1 Remove pump cover from pump housing
SAT722
INSPECTION
1. Inspect pump body, bushing and pump shaft,
2. Stake off retaining pin using a punch [outer
for wear.
dia. 1.5 t o 1.8 mm (0.059 to 0.071 in)], then
2 Inspect gears, lock up control valve, spring and
.
remove lock-up control valve and spring
all internal surfaces for damage and visible
wear.
AT-28
REPAIR FOR COMPONENT PARTS
Oil Pump (Cont'd)
Valve spring chart
Outer Installed
Wire dia No of Free length
Valve spring coil dia Length
rnrn (in) active coil rnrn (in)
rnrn (in) rnrn (in) N (kg. Ib)
10 89
Lock-up control valve 0 65 (002561 5 45 (021461 14 5 25 7 ( 1 0121 16 0 (0630) (1 11, 45)
3 Measure clearance between outer gear and
crescent.
Standard clearance:
-
0.14 0.21 mm (0.0055 - 0.0083 in)
Wear limit:
0.25 mm (0.0098 in)
SAT026
5 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:
4 Measure clearance between outer gear and
0.08 mm (0.0031 in)
pump housing.
Standard clearance:
-
0.05 0.20 mm (0.0020 - 0.0079 in)
Wear limit:
0.25 mm (0.0098 in)
AT162
AT-29
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
t o pump housing Temporarily assemble oil
pump.
SATW
2. Stake off retaining pin using a punch [outer
dia. 1.5 t o 1.8 mm (0.059 to 0.071 in)], then
remove O.D. cancel valve and spring
sar-0 Don't stake it off from contacting face side
Retaining pin
3 Set the cover t o within the run-out of the 7
specified total indicator reading. 00
Total indicator reading:
Less than 0.07 mm (0 0028 in)
&25580001
SAT541
4 Tighten pump securing bolts t o the specified
torque
Recheck run-out
AT-30
INSPECTION a Inspect O.D. cancel valve & spring and all
a Inspect drum support bushing and ring groove internal surfaces for damage visible wear
areas for wear.
SAT542 I
Installed
Outer
Wire dia No of Freelength
Valve spring coil dia active coil mm (in) Length Load
mm (In) mm (in) mm (in) N (kg, Ib)
0 65 4 95 23 0 16 0 12 26
0 D. canel valve 12 8
( 0 0256) ( 0 1949) (09061 ( 0 630) (1 25, 2 76)
Measure clearance between seal ring and ring
groove
Standard clearance:
0.05 - 0.20 rnrn (0.0020 - 0.0079 in)
Wear limit:
0.20 m m (0.0079 in)
IIII I I II
SAT545
AT-31
REPAIR FOR COMPONENT PARTS
Drum Support (Cont'd)
ASSEMBLY 3. Install oneway plug in O.D. case.
1 Install 0 D cancel valve and spring into drum
One-way plug Steel ball
suppon, then tap new retaining pins
2. Install lubrication plug in drum support
\
:
'
Oneway plug
!Lubrication
plug Iflbed
4 M int oil pum assembly in Tool and suitable
spacer
[Thickness 20 mm IO 79 In
SAT540
AT-32
REPAIR FOR COMPONENT PARTS
Drum Support (Cont'd)
5 Mount 0 D. case, drum support and gasket in
oil pump assembly Temporarily assemble
drum support.
Ensure O.D. case is inserted properly into oil pump
assembly.
0 0 case
11 An
I pump cafe
8 Tighten drum support securing bolts to the
specified torque.
011
pump centering
Recheck run-out.
SAT547
6. Insert an approx. 110 mm (4.33 in) bar into
bore in oil pump a t shaft location and install
intermediate shaft onto it.
intermediate shaft
01 pump centering
1
tool lST25580001)
Suitablebar [llOmm
20 mm IO 79 d l
SAT599
This operation can also be performed by using
Tool (533909)
7 Set the drum support within the run-out of the
specified total indicator reading
Total indicator reading:
Less than 0 05 mm (0.0020 in)
AT-33
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!
'% r V a c u u r n throttle valve
(
@ ,-3rd4th shift valve
-
Pressure modifier 3 r d 4 t h shift sleeve
WlYe
69 l r t 3 n d shift valve
G ate "6"
2nd-3rd shift wlve
Throttle back-up valve W
Side plate "A"
Lower body ride
rControl valve lower body
&Retaining pin
3rd-2nd timing valve/
SAT724
AT-34
REPAIR FOR COMPONENT PARTS
Control Valve Body (Cont'd)
I
VALVE BODY SPRING CHART Numbers stamped on valve springs listed in table
~ below are the Same as those in the figure on the
previous page.
Free length
Outer
Outer coil Insta Iled
Wire dia No of Free length
Valve spring mm (in) dia active coil mm (in) Length
mm (in)
mm (in) N (kg. Ib)
Solenoid
@ valve
downshift
10 55 (00217) 1 55 (02185)
5 I 12 22 0 (0866) 12 5 (0492)
I 5 88 (06 0 , l 32)
@ Second lock valve 0 5 5 ( 0 0 2 1 7 ) 555(021851 16 33 5 (1 319) 21 0 (0827) 5 88 (060,1.32)
relief
I VG30E 1 0 9 (0035) 1 65(0256) I 14 26 8 (1 055) 19 0 (0748) 21 48 (2 19,4 83)
check
valve VG30E turbo 1 0 (00391 6 5 (0256) 13 24 9 (0980) 19 0 (0748) 27 95 (2 85,6 28)
Orifice check valve
Servo orifice check 0 2 3 (00091) 5 0 (0197) 12 155(0610) 11 5(04531 OlO(OOl.002)
valve
3rd - 4th VG30E 24 586
0 8 (0031) 6 6 (0260) 12 6 30 3 (1 193)
13 1 (0 516) (2 507, 528)
@ shift -
VG30E turbo 0 75 (00295) 6 1 (0240) 13 6 2 6 8 ( 1 0 5 5 ) I 1 3 1 (0516) I 2138(218.481)
3rd - 2nd VG30E 0 7 (0028) 5 9 (0232) 12 5 2 2 7 ( 0 8 9 4 ) 14.5(0571) 11 08(1.13,249)
@ timing
valve VG30E turbo 0 9 (0035) 7 4 (0291) 9 207(0815) 14.5(0571) l 6 4 8 ( 1 68,370)
AT-35
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 t o 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 t o scatter or lose orifice check valve, bly
1 Check valves for signs of burning Replace if
servo orifice check valve, or throttle relief check
beyond clean-up
valve (ball) and related spring.
2 Check oil strainer for general condition.
Replace if necessary
AT168
SATMS
INSPECTION
A newly manufactured valve body represents
precision manufactured valves assembled with close
tolerances into precision bores of the valve body
If inspection reveals excessive clearances, 0.03 mm
(00012 in) or more, between the valves and the
valve body bores, replace the entire valve body
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-36
REPAIR FOR COMPONENT PARTS
Control Valve Body (Cont'd)
3 Check separator plate for scratches or damage Upper valve body
Replace if necessary Scratches or score marks
A
can cause oil t o by-pass correct oil passages
and result in system malfunction Onfice check valve--@
(Front clutch applies) h
2 Assemble separator plate and upper valve body
SAT046
on lower valve body, then tighten bolts.
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
5 Test valve springs for weakened load condition
Refer to Valve Body Spring Chart for spring
specifications.
ASSEMBLY
1 Install orifice check valves, valve springs, throt-
tle relief valve spring and steel ball in valve ReaGer bolt
body
Lower valve body
When installing these bolts, first be sure t o install
Orifice check V a l v e - P -oroftee check valve the two reamer bolts t o their original positions.
for 2nd-3rd rhifl ..reiea*
(VG30E turbo (I a x b o only) 3. Install oil strainer.
Throttle relief valve,
Orifice c h k k valveJ
(direct clutch applies) SAT743
AT-37
REPAIR FOR COMPONENT PARTS
Oil Distributor
INSPECTION
Inspect contacting surface of oil distributor
and ring groove areas for wear
SAT725
0 Measure clearance between seal ring and ring
groove.
Standard clearance:
0.04 - 0.16 mm (0.0016 - 0.0063 in)
Wear limit:
0.16 rnm (0.0063 in)
it- Clearance
r S e a l ring
_.__-
SAT726
AT-38
REPAIR FOR COMPONENT PARTS
Direct Clutch & Front Clutch
Number of return springs
Front clutch . 5 Drum assembly
D t r ~clutch
t 10
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 LAW IS blocked here
Compress clutch springs and remove snap ring
from spring retainer using Tool.
\ SAT553
4 Lubricate clutch drum hub and seals, and
install inner seal and piston seal as illustrated
Be careful not t o stretch seals during instal-
e For easy removal of piston from drum, mount lation
clutch on drum support. Use an air gun with a
tapered rubber up to carefully apply air pres-
sure to loosen piston from drum
SAT031
5. Assemble piston, being careful not t o allow seal
to kink or become damaged during installation.
After installing, turn piston by 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 mrn (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. / . - -c
--i J SAT032
AT-40
REPAIR FOR COMPONENT PARTS
Direct Clutch & FI it Clutch (Cont'd)
6 Reassemble spring and retainer. Reinstall snap If necessary, try other retaining plates having
ring. Be sure snap ring S properly seated.
I different thicknesses until correct clearance IS
obtained
SAT028
7. Install dish plate
High-reverse clutch (Front)
Part number
-Thickness mm (in)
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